þ	Preliminary Proxy Statement

o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o	Definitive Proxy Statement

o	Definitive Additional Materials

o	Soliciting Material Pursuant to §240.14a-12

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o	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11

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o	Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

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(1)	To elect three members to our board of directors for three-year terms to expire at our 2019 annual meeting of stockholders;

(2)	To approve, on a non-binding, advisory basis, the compensation of our named executives officers as disclosed in the accompanying Proxy Statement;

(3)	To approve the Kaiser Aluminum Corporation 2016 Equity and Performance Incentive Plan;

(4)	To amend our amended and restated certificate of incorporation to implement a successor tax asset protection provision to preserve certain tax benefits primarily associated with our net operating losses;

(5)	To ratify the adoption of our tax asset protection plan;

(6)	To ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2016; and

(7)	To consider such other business as may properly come before the Annual Meeting or any adjournments thereof.

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Q:	When is the Proxy Statement being sent to stockholders and what is its purpose?

A:	This Proxy Statement is first being sent to our stockholders on or about April [ ], 2016 at the direction of our board of directors in order to solicit proxies for our use at the Annual Meeting.

Q:	When is the Annual Meeting and where will it be held?

A:	The Annual Meeting will be held on Thursday, May 26, 2016, at 9:00 a.m., local time, at our corporate office, located at 27422 Portola Parkway, Suite 200, Foothill Ranch, California 92610.

Q:	Who may attend the Annual Meeting?

A:	All of our stockholders may attend the Annual Meeting.

Q:	Who is entitled to vote?

A:	Stockholders as of the close of business on April 8, 2016 are entitled to vote at the Annual Meeting. Each share of our common stock is entitled to one vote.

Q:	On what am I voting?

A:	You will be voting on:

•	The election of three members to our board of directors to serve until our 2019 annual meeting of stockholders;

•	The approval, on a non-binding, advisory basis, of the compensation of our named executive officers as disclosed in this Proxy Statement;

•	The approval of the Kaiser Aluminum Corporation 2016 Equity and Performance Incentive Plan, which we refer to as the 2016 Plan and a copy of which is attached as Appendix A to this Proxy Statement;

•	The amendment of our amended and restated certificate of incorporation to implement a successor tax asset protection provision to preserve certain tax benefits primarily associated with our net operating losses;

•	The ratification of our tax asset protection plan; and

•	The ratification of the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2016; and

•	Such other business as may properly come before the Annual Meeting or any adjournments.

Q:	How does the board of directors recommend that I vote?

A:	The board of directors recommends that you vote your shares:

•	"FOR ALL" the director nominees identified in "Proposals Requiring Your Vote - Proposal 1 - Election of Directors" below;

•	"FOR" the approval of the compensation of our named executive officers as disclosed in this Proxy Statement;

•	"FOR" the approval of the Kaiser Aluminum Corporation 2016 Equity and Performance Incentive Plan;

•	"FOR" the amendment of our amended and restated certificate of incorporation to implement a successor tax asset protection provision to preserve certain tax benefits primarily associated with our net operating losses;

•	"FOR" the ratification of our tax asset protection plan; and

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•	"FOR" the ratification of the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2016.

Q:	How can I vote?

A:	You can vote in person at the Annual Meeting or you can vote prior to the Annual Meeting by proxy. Whether or not you plan to attend the Annual Meeting, we urge you to vote by proxy without delay.

Q:	How do I vote by proxy?

A:	If you choose to vote your shares by proxy, you have the following options:

•	Over the Internet: You can vote over the Internet at the website shown on your proxy card. Internet voting will be available 24 hours a day, seven days a week, until 11:59 p.m., Eastern Time, on Wednesday May 25, 2016.

•	By telephone: You can vote by telephone by calling the toll-free number shown on your proxy card. Telephone voting will be available 24 hours a day, seven days a week, until 11:59 p.m., Eastern Time, on Wednesday, May 25, 2016.

•	By mail: You can vote by mail by completing, signing and dating your proxy card and returning it in the enclosed prepaid envelope.

Q:	I want to attend the Annual Meeting and vote in person. How do I obtain directions to the Annual Meeting?

A:	You may obtain directions to the Annual Meeting by calling us at (949) 614-1740.

Q:	What constitutes a quorum?

A:

As of April 8, 2016, the record date, 17,984,121 shares of our common stock were issued and outstanding. A majority of these shares present or represented by proxy will constitute a quorum for the transaction of business at the Annual Meeting. If you properly vote by proxy by submitting your voting instructions over the Internet, by telephone or by mail, then your shares will be counted as part of the quorum. Abstentions or votes that are withheld on any matter will be counted towards a quorum but will be excluded from the vote relating to the particular matter under consideration. Broker non-votes are counted towards a quorum but are excluded from the vote with respect to the matters for which they are applicable. A broker non-vote occurs when a broker holding shares for a beneficial owner does not vote on a particular proposal because the broker does not have discretionary voting power with respect to that proposal and has not received instructions with respect to that proposal from the beneficial owner. Among our proposals, brokers will have discretionary voting power only with respect to the proposal to ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2016.

Q:	What are the voting requirements for the proposals?

A:	There are different voting requirements for the proposals.

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Each director will be elected by an affirmative vote of the majority of the votes cast with respect to the director in an uncontested election. If an incumbent director nominee receives a greater number of votes cast against his or her election than in favor of his or her election (excluding abstentions) in an uncontested election, the nominee must promptly tender his or her resignation, and the board of directors will decide, through a process managed by the nominating and corporate governance committee, whether to accept the resignation, taking into account its fiduciary duties to our company and our stockholders. The board of director's explanation of its decision will be promptly disclosed in a Form 8-K furnished to the Securities and Exchange Commission. An election of directors is considered to be contested if there are more nominees for election than positions on the board of directors to be filled by election at the meeting of stockholders. In the event of a contested election, each director will be elected by a plurality vote of the votes cast at such meeting. The election of directors at the Annual Meeting is uncontested.

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The approval of the holders of a majority of the total number of outstanding shares of our common stock present in person or represented by proxy at the Annual Meeting and actually voted on the proposal is necessary (1) to approve, on a non-binding, advisory basis, the compensation of our named executive officers as disclosed in this Proxy Statement, (2) to approve the 2016 Plan, (3) to ratify the adoption of our tax asset protection plan, and (4) to ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2016. If you abstain from

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The affirmative vote of the holders of at least a majority of the total number of outstanding shares of our common stock entitled to vote at the Annual Meeting is required to approve the amendment to our amended and restated certificate of incorporation to implement a successor tax asset protection provision. If you abstain from voting on the proposal to amend our amended and restated certificate of incorporation, your shares will effectively be a vote against that proposal.

Q:	If my shares are held in "street name" by my broker, will my broker vote my shares for me?

A:	As discussed above, among our proposals, brokers will have discretionary voting power only with respect to the proposal to ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2016. To be sure your shares are voted, you should instruct your broker to vote your shares using the instructions provided by your broker.

Q:	What will happen if the compensation of the company's named executive officers is not approved by the stockholders?

A:

Because this is an advisory vote, our board of directors and compensation committee will not be bound by the approval of, or the failure to approve, the executive compensation of our named executive officers as disclosed in this Proxy Statement. The board of directors and the compensation committee, however, value the opinions that our stockholders express in their votes and will consider the outcome of the vote when determining future executive compensation programs.

Q:	What will happen if the 2016 Plan is not approved by the stockholders?

A:

Our existing equity incentive plan, the Kaiser Aluminum Corporation Amended and Restated 2006 Equity and Performance Incentive Plan (the "2006 Plan"), expires on July 6, 2016. If the 2016 Plan is not approved by our stockholders, we will not be able to grant equity awards as part of our incentive compensation programs in the coming years. The inability to grant equity awards as part of our incentive compensation programs (1) could make it difficult to retain employees, attract employees from companies that have equity compensation programs and compete for talent against competitors that have equity compensation programs and (2) may compel us to increase the cash component of employee compensation, thereby undermining the structure and objectives of our compensation programs, which include the alignment of the interests of our senior management with those of our stockholders.

Q:	What will happen if the proposed amendment of our amended and restated certificate of incorporation is not approved by stockholders?

A:

If the amendment of our amended and restated certificate of incorporation to implement a successor tax asset protective provision is not approved by stockholders at the Annual Meeting, the amendment will not become effective. The successor tax asset protective provision, like the existing tax asset protective provision in our amended and restated certificate of incorporation, is designed to prevent certain transfers of our common stock that could significantly limit our ability to utilize our net operating loss ("NOL") carryforwards and other tax attributes (collectively, "Tax Benefits") to offset otherwise taxable income. If the amendment does not become effective, the existing tax asset protective provision will expire on July 6, 2016.

Q:	What will happen if our tax asset protection plan is not ratified by stockholders?

A:	If Our tax asset protection plan is not ratified by stockholders at the Annual Meeting, our tax asset protection plan, which is designed to deter transfers of our common stock that could significantly limit our ability to use our Tax Benefits to

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Q:	What will happen if the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2016 is not ratified by the stockholders?

A:

Pursuant to the audit committee charter, the audit committee of our board of directors has sole authority to appoint our independent registered public accounting firm, and the audit committee will not be bound by the ratification of, or failure to ratify, the selection of Deloitte & Touche LLP. The audit committee will, however, consider any failure to ratify the selection of Deloitte & Touche LLP in connection with the appointment of our independent registered public accounting firm the following year.

Q:	Can I change my vote after I give my proxy?

A:	Yes. If you vote by proxy, you can revoke that proxy at any time before voting takes place at the Annual Meeting. You may revoke your proxy by:

•	attending the Annual Meeting and voting in person.

Q:	What does it mean if I receive more than one proxy card?

A:	If you receive more than one proxy card, it is because your shares are held in more than one account. You must vote each proxy card to ensure that all of your shares are voted at the Annual Meeting.

Q:	Who will count the votes?

A:	Representatives of Computershare, our transfer agent, will tabulate the votes and act as inspectors of election.

Q:	How much will this proxy solicitation cost?

A:

We have hired MacKenzie Partners, Inc. to assist us in the distribution of proxy materials and solicitation of votes at a cost not to exceed $10,000, plus out-of-pocket expenses. We will reimburse brokerage firms and other custodians, nominees and fiduciaries for their reasonable out-of-pocket expenses for forwarding proxy and solicitation materials to the owners of our common stock. Our officers and regular employees may also solicit proxies, but they will not be specifically compensated for these services. In addition to the use of the mail, proxies may be solicited personally or by telephone by our employees or by MacKenzie Partners.

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•	align the interest of our named executive officers and stockholders by tying a significant portion of compensation to enhancing stockholder return;

•	attract, motivate and retain highly experienced executives vital to our short-term and long-term success, profitability and growth;

•	deliver a mix of fixed and at-risk compensation with the portion of compensation at risk increasing with seniority; and

•	tie our executive compensation to our ability to pay and safety, quality, delivery, cost and individual performance.

•	a base salary targeted at the 50th percentile of our compensation peer group (1) compensating each named executive officer based on the level of responsibility, individual expertise and prior experience and (2) providing a fixed amount of cash compensation upon which our named executive officers can rely;

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a short-term annual cash incentive targeted at the 50th percentile of our compensation peer group (1) payable only if our company achieves a certain adjusted earnings before interest, taxes, depreciation and amortization, or Adjusted EBITDA, performance goal determined using an economic value added, or EVA, calculation reflecting the adjusted pre-tax operating income, or PTOI, of our core Fabricated Products business less a capital charge calculated as a percentage of our adjusted net assets as more fully described below, and (2) adjusted based on (a) our safety performance based on our total case incident rate, or TCIR, which is the average number of work-related injuries incurred by 100 workers during a one-year period, (b) our quality performance based on our no-fault claim rate, (c) delivery performance based on our on-time delivery rate, (d) cost performance based on manufacturing efficiency, and (e) individual performance based on individual, facility, and/or functional performance; and

•	an equity-based, long-term incentive targeted at between the 50th and 65th percentile of our compensation peer group and designed to align compensation with the interests of our stockholders and to enhance retention of our named

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•	The 2016 Plan places specific limits on the number of shares subject to certain Qualified Performance-Based Awards (as defined below) that can be granted under the 2016 Plan to individuals during a calendar year.

•	The 2016 Plan places a specific dollar limit on the aggregate value of awards that can be granted under the 2016 Plan to our non-employee directors during a calendar year.

•	The 2016 Plan does not utilize so-called “liberal” share counting.

•	The 2016 Plan prohibits granting discounted stock options and stock appreciation rights.

•	The 2016 Plan prohibits the repricing of stock options and appreciation rights without stockholder approval.

•	The 2016 Plan has no evergreen features.

•	The 2016 Plan generally provides that awards will be subject to “double-trigger” vesting upon a change in control.

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•	The 2016 Plan generally provides that awards will be subject to a one-year minimum vesting or performance period, subject to certain exceptions described in the 2016 Plan.

•	The 2016 Plan does not provide for any tax “gross-ups” for excise taxes payable in connection with a change in control.

•	The 2016 Plan will generally be administered by our independent compensation committee of our board of directors.

•	Our award agreements with participants under the 2016 Plan will require that awards be subject to certain forfeiture and clawback arrangements.

•	Number of shares of our common stock subject to outstanding stock options: 16,645 shares of our common stock (0.09% of our outstanding common stock) (all such outstanding stock options have an exercise price of $80.01 and a remaining term of approximately one year);

•	Number of shares of our common stock subject to outstanding full value awards (i.e. restricted stock, restricted stock units and performance shares): 632,423 shares of our common stock (3.52% of our outstanding common stock);

•	Total number of shares of our common stock subject to outstanding full value awards: 649,068 shares of our common stock (3.61% of our outstanding common stock);

•	Total number of shares of our common stock available for future awards under the 2006 Plan: 603,810 shares of our common stock (3.36% of our outstanding common stock); and

•	The sum of (1) the total number of shares of our common stock subject to outstanding awards and (2) the total number of shares of our common stock available for future awards under the 2006 Plan: 1,252,878 shares of our common stock, representing an equity overhang (or maximum potential dilution) of 6.97%.

•	Number of shares of our common stock subject to outstanding stock options under the 2006 Plan: 16,645 shares of our common stock (0.09% of our outstanding common stock) (all such outstanding stock options have an exercise price of $80.01 and a remaining term of approximately one year);

•	Number of shares of our common stock subject to outstanding full value awards (i.e., restricted stock, restricted stock units and performance shares) under the 2006 Plan: 632,423 shares of our common stock (3.52% of our outstanding common stock);

•	Total number of shares of our common stock subject to outstanding awards under the 2006 Plan: 649,068 shares of our common stock (3.61% of our outstanding common stock);

•	Total number of shares of our common stock available for future awards under the 2016 Plan: 939,448 shares of our common stock (5.22% of our outstanding common stock), representing the sum of (1) 603,810 shares of our

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•	The sum of (1) the total number of shares of our common stock subject to outstanding awards under the 2006 Plan and (2) the total number of shares of our common stock available for awards under the 2016 Plan: 1,588,516 shares of our common stock, representing an equity overhang (or maximum dilution potential) of 8.83%.

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•	the aggregate number of shares of our common stock actually issued or transferred upon the exercise of “incentive stock options” as defined in Section 422 of the Code (“Incentive Stock Options”) will not exceed 1,045,000 shares of our common stock;

•	no participant will be granted stock options and/or SARs, in the aggregate, for more than 250,000 shares of our common stock during any calendar year;

•	no participant will be granted awards of restricted stock, RSUs, performance shares and/or other stock-based awards that are Qualified Performance-Based Awards, in the aggregate, for more than 250,000 shares of our common stock during any calendar year;

•	no participant in any calendar year will receive awards of performance units and/or other awards payable in cash that are Qualified Performance-Based Awards, having an aggregate maximum value as of their respective grant dates in excess of $5,000,000;

•	no participant in any calendar year will receive cash incentive awards that are Qualified Performance-Based Awards having an aggregate maximum value in excess of $5,000,000;

•	no non-employee director will be granted, in any period of one calendar year, awards under the 2016 Plan having an aggregate maximum value in excess of $500,000; and

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•	up to 5% of the maximum number of shares of our common stock available for awards under the 2016 Plan may be used for awards under the 2016 Plan that do not at grant comply with the one-year minimum vesting or performance period requirements (as further described below) applicable to such awards.

•	Time-based restrictions on stock options, SARs, restricted stock, RSUs and other share-based awards may not lapse solely by the passage of time sooner than after one year, unless our compensation committee specifically provides for those restrictions to lapse sooner, including by virtue of the retirement, death or disability of a participant; and

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Stock options, SARs, restricted stock, RSUs, performance shares, performance units, and other share-based awards that vest (or become unrestricted, as applicable) upon the achievement of management objectives, the performance period must be at least one year, unless our compensation committee specifically provides for earlier lapse or modification, including by virtue of the retirement, death or disability of a participant.

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•	The 2016 Plan provides that, except with respect to converted, assumed or substituted awards as described in the 2016 Plan, no stock options or SARs will be granted with an exercise or base price, less than the fair market value of our common stock on the date of grant.

•	The 2016 Plan is designed to allow awards made under the 2016 Plan to be Qualified Performance-Based Awards.

•	Profits (e.g., operating income, EBIT, EBT, net income (before or after taxes), earnings per share, residual or economic earnings, economic profit - these profitability metrics could be measured before certain specified special items and/or subject to definitions under generally accepted accounting principles);

•	Cash Flow (e.g., EBITDA, free cash flow, free cash flow with or without specific capital expenditure target or range, including or excluding divestments and/or acquisitions, total cash flow, cash flow in excess of cost of capital or residual cash flow or cash flow return on investment);

•	Returns (e.g., profits or cash flow returns on: assets, invested capital, net capital employed and equity);

•	Working Capital (e.g., working capital divided by sales, days’ sales outstanding, days’ sales inventory and days’ sales in payables);

•	Profit Margins (e.g., profits divided by revenues, gross margins and material margins divided by revenues, and material margin divided by sales pounds);

•	Liquidity Measures (e.g., debt-to-capital, debt-to-EBITDA, total debt ratio);

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Revenues, Sales, Operating, Cost and Stock Price Metrics (e.g., revenues, sales, revenue or sales growth, revenue or sales growth outside the United States, gross margin, gross margin growth, material margin, material margin growth, operating margin, operating margin growth, sales and administrative costs divided by sales or profits, operating or manufacturing costs, operating or manufacturing costs relative to prior periods or business plan, stock price appreciation and total return to stockholders);

•	Safety Performance (e.g., total case incident rate);

•	Quality Performance (e.g., no fault claim rate);

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•	Delivery Performance (e.g., on-time delivery rate); and

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Strategic Initiative Key Deliverable Metrics consisting of one or more of the following: product development, strategic partnering, research and development, vitality index, market penetration, geographic business expansion goals, customer satisfaction, employee satisfaction, management of employment practices and employee benefits, supervision of litigation and information technology, and goals relating to acquisitions or divestitures of subsidiaries, affiliates and joint ventures.

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•	The acquisition by any person or group of beneficial ownership of 35% or more the combined voting power of our then-outstanding securities entitled to vote generally in the election of directors, subject to certain exceptions as described in the 2016 Plan;

•	Individuals who constituted our board of directors on the effective date of the 2016 Plan cease for any reason to constitute at least a majority of our board of directors, unless their replacements are approved as described in the 2016 Plan;

•	Kaiser closes certain reorganizations, mergers, or consolidations, or certain sales or other dispositions of all of the assets of Kaiser or certain acquisitions of assets of another corporation or entity or certain other transactions, as further described in the 2016 Plan and subject to certain exceptions as described in the 2016 Plan; or

•	Kaiser’s stockholders approve its complete liquidation or dissolution, subject to certain exceptions as described in the 2016 Plan.

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(1)	None of our executive officers are expected to receive an award under the 2016 Plan immediately following the Annual Meeting.

(2)

Immediately following the Annual Meeting, pursuant to our director compensation policy, each of our nine non-employee directors is expected to receive a grant of restricted stock units having a value equal to $95,000. The number of shares subject to such grants will be determined based on a per share price equal to the average of the closing prices per share of our common stock as reported on the Nasdaq Global Select Market for the 20 trading days prior to the date of such grants. It is also expected that, under the 2016 Plan, each of our non-employee directors will be permitted to elect to receive shares of common stock in lieu of any or all of his or her annual cash retainer to be awarded immediately following the Annual Meeting, including retainers for serving as Lead Independent Director or a committee chair, with the number of shares to be determined based on a per share price equal to the average of the closing prices per share of our common stock as reported on the Nasdaq Global Select Market for the 20 trading days prior to the award date of the annual retainers. As of the date of this Proxy Statement, it is not possible to determine the number of shares of our common stock that will be issued or transferred to non-employee directors as a result of elections to receive shares of our common stock in lieu of annual retainers because such elections have not yet been made.

(3)	None of our employees, including our officers who are not executive officers, are expected to receive an award under the 2016 Plan immediately following the Annual Meeting.

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•	no income will be recognized by a participant at the time a non-qualified stock option is granted;

•	at the time of exercise of a non-qualified stock option, ordinary income will be recognized by the participant in an amount equal to the difference between the exercise price paid for the shares of our common stock and the fair market value of the shares of our common stock, if unrestricted, on the date of exercise; and

•	at the time of sale of shares acquired pursuant to the exercise of a non-qualified stock option, appreciation (or depreciation) in value of the shares of our common stock after the date of exercise will be treated as either short-term or long-term capital gain (or loss) depending on how long the shares have been held.

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amend our amended and restated certificate of incorporation (such amendment, the "Protective Amendment") to adopt a successor provision (the "Successor Protective Provision") to the existing Section 4 of Article IV, which by its express terms will expire on July 6, 2016 (the "Expiring Protective Provision"), with the Successor Protective Provision to expire on the third anniversary of the date of the Annual Meeting; and

•	adopt a Tax Asset Protection Plan (the "Protection Plan"), with the Protection Plan to expire on April 7, 2019, the third anniversary of the action of our board of directors adopting the Protection Plan.

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•	increase the direct or indirect ownership of our common stock by any Person (as described below) to 4.99% or more; or

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•	increase the percentage of our common stock owned directly or indirectly by a Person owning or deemed to own 4.99% or more of our common stock.

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•	Our board of directors can permit a transfer to an acquirer that results or contributes to an “ownership change” if it determines that such transfer is in our best interests.

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A court could find that part or all of the Successor Protective Provision is not enforceable, either in general or as to a particular fact situation. Under the laws of the State of Delaware, our jurisdiction of incorporation, a corporation is conclusively presumed to have acted for a reasonable purpose when restricting the transfer of its securities in its certificate of incorporation for the purpose of maintaining or preserving any tax attribute. Delaware law provides that transfer restrictions with respect to shares of our common stock issued prior to the effectiveness of the restrictions will

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Despite the adoption of the Protective Amendment, there is still a risk that certain changes in relationships among stockholders or other events could cause an “ownership change” under Section 382. Accordingly, we cannot assure you that an “ownership change” will not occur even if the Protective Amendment is adopted. However, our board of directors has also adopted, and is seeking stockholder ratification of the adoption of, the Protection Plan, which is intended to act as a deterrent to any person acquiring 4.99% or more of our common stock and thereby endangering our ability to preserve and utilize the Tax Benefits.

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•	10 days after a public announcement by Kaiser that a person or group has become an acquiring person; and

•	10 business days (or a later date determined by our board of directors) after a person or group begins a tender or exchange offer that, if completed, would result in that person or group becoming an acquiring person.

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•	the qualifications to serve as a director as set forth in any applicable corporate governance guidelines adopted by the board of directors and policies adopted by the nominating and corporate governance committee establishing criteria to be utilized by it in assessing whether a director candidate has appropriate skills and experience; and

•	any other qualifications to serve as director imposed by applicable law.

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•	Potential payouts under our incentive plans are capped, and overall variable compensation does not materially impact our financial results;

•	Our overall compensation is comprised of a mix of long- and short-term compensation which discourages short-term decisions that could be at the expense of long-term results;

•	A significant portion of the variable compensation is in the form of restricted stock or restricted stock units and performance shares with three-year vesting and performance periods, which ensure that three years of unvested grants are outstanding at any time and encourage decisions that create long-term value for our stockholders;

•	All of our incentive programs contain clawback provisions, which provide for the forfeiture of outstanding unvested awards and the return of vested awards;

•	Our short-term incentive plan and our performance shares require the attainment of threshold company performance levels before any payments are earned or performance shares vest; and

•	Our stock ownership guidelines require our board of directors and senior management to retain significant equity interests in our company to ensure the ongoing alignment of senior management and our stockholders.

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•	establishing hiring policies for employees or former employees of the independent accounting firm;

•	reviewing our systems of internal accounting controls;

•	discussing risk management policies;

•	approving related-party transactions;

•	establishing procedures for complaints regarding financial statements or accounting policies; and

•	performing other duties delegated to the audit committee by our board of directors from time to time.

•	administering plans adopted by our board of directors that contemplate administration by the compensation committee, including the 2006 Plan and, if approved by our stockholders at the Annual Meeting, the 2016 Plan;

•	overseeing regulatory compliance with respect to compensation matters;

•	reviewing director compensation; and

•	performing other duties delegated to the compensation committee by our board of directors from time to time.

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•	exhibits strong leadership in his or her particular field or area of expertise;

•	possesses the ability to exercise sound business judgment;

•	has a strong educational background or equivalent life experiences;

•	has substantial experience both in the business community and outside the business community;

•	contributes positively to the existing collaborative culture among members of our board of directors;

•	represents the best interests of all of our stockholders and not just one particular constituency;

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•	has experience as a senior executive of a company of significant size or prominence or another business or organization comparable to our company;

•	possesses skills and experience which make him or her a desirable addition to a standing committee of our board of directors;

•	consistently demonstrates integrity and ethics in his or her professional and personal life; and

•	has the time and ability to participate fully in activities of our board of directors, including attendance at, and active participation in, meetings of our board of directors and the committee or committees of which he or she is a member.

•	assisting in management succession planning, including with respect to the chairman of our board of directors and our Chief Executive Officer;

•	considering possible conflicts of interest of members of our board of directors and management and making recommendations to prevent, minimize or eliminate such conflicts of interests;

•	evaluating whether an incumbent director should be nominated for re-election to our board of directors upon expiration of the incumbent's term;

•	making recommendations to our board of directors regarding the appropriate size of our board of directors; and

•	performing other duties delegated to the nominating and corporate governance committee by our board of directors from time to time.

•	proof that the stockholder or group of stockholders submitting the recommendation has beneficially owned, for the required one-year holding period, more than 5% of our outstanding common stock;

•	a written statement that the stockholder or group of stockholders intends to continue to beneficially own more than 5% of our outstanding common stock through the date of the next annual meeting of our stockholders;

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the name and record address of each stockholder submitting a recommendation for the director candidate, the written consent of each such stockholder and the director candidate to be publicly identified (including, in the case of the director candidate, to be named in the company's proxy materials) and the written consent of the director candidate to serve as a member of our board of directors (and any committee of our board of directors to which the director candidate is assigned to serve by our board of directors) if elected;

•	a description of all arrangements or understandings between or among any of the stockholders or group of stockholders submitting the recommendation, the director candidate and any other person or persons (naming such

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•

with respect to the director candidate, (1) his or her name, age, business and residential address and principal occupation or employment, (2) the number of shares of our common stock beneficially owned by him or her, (3) a resume or similar document detailing his or her personal and professional experiences and accomplishments, and (4) all other information relating to the candidate that would be required to be disclosed in a proxy statement or other filing made in connection with the solicitation of proxies for the election of directors pursuant to the Exchange Act, the rules of the Securities and Exchange Commission or the rules of the Nasdaq Stock Market; and

•	a written statement that each submitting stockholder and the director candidate shall make available to the nominating and corporate governance committee all information reasonably requested in connection with the committee's evaluation of the candidate.

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•	net sales of $1.4 billion;

•	continued investments for further growth, enhanced efficiency and quality;

•	approximately $77 million returned to stockholders through quarterly dividends and share repurchases; and

•	terminated defined benefit accounting for a voluntary employees’ beneficiary association (“VEBA”) that provides benefits for certain eligible retirees represented by unions and their spouses and eligible dependents (which we refer to as the Union VEBA Trust) and removed the Union VEBA Trust’s net assets from our balance sheet.

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•	objectives for our compensation programs;

•	the structure of our compensation programs;

•	the role of our compensation programs in management succession planning; and

•	compensation of other members of senior management, including our other named executive officers.

•	creating alignment between our senior management and our stockholders by rewarding our senior management for achieving strategic goals that successfully drive our operations and enhance our stockholder return;

•	attracting, motivating and retaining highly experienced executives vital to our short-term and long-term success, profitability and growth;

•	correlating our senior management compensation with our actual performance; and

•	providing competitive, targeted compensation levels that are benchmarked to our compensation peer group discussed below as follows:

•	for base salary, the 50th percentile;

•	for annual cash incentives at target-level performance, the 50th percentile; and

•	for annualized economic equity grant value of long-term incentives, between the 50th and the 65th percentiles.

•	a short-term annual cash incentive payable only if the performance threshold is met; and

•	an equity-based, long-term incentive consisting of (1) shares of restricted stock with a three-year cliff vesting schedule to promote senior management retention, and (2) performance shares that vest, if at all, based on our TSR compared to a group of peer companies over a three-year performance period (2015 through 2017).

•	balanced short-term and long-term goals, with:

•	approximately 57% of our Chief Executive Officer's target total compensation being delivered through long-term incentives; and

•	approximately 44% to 48% of the target total compensation for our other named executive officers being delivered through long-term incentives;

•	delivered a mix of fixed and at-risk compensation directly related to our overall performance and the creation of stockholder value, with:

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•	approximately 75% of our Chief Executive Officer's target total compensation being at-risk compensation payable only if certain corporate performance levels are achieved; and

•	approximately 63% to 70% of the target total compensation for our other named executive officers being at-risk compensation payable only if certain corporate performance levels are achieved;

•	provided compensation that is competitive with our compensation peer group recommended by the compensation committee's independent compensation consultant;

•	utilized equity-based awards, including performance shares that vest only if we achieve a certain TSR performance goal, stock ownership guidelines and annual cash incentives linked to achievement of financial, corporate, operational and individual performance;

•	emphasized the importance of safety, quality, delivery and cost performance; and

•	utilized forfeiture provisions that can result in the loss of awards and resulting benefits if we determine that a recipient, including any of our named executive officers, has engaged in certain activities detrimental to us.

•	The external challenges to our near- and long-term ability to attract and retain strong senior management;

•	Each individual's contributions to our overall results;

•	Our historical and anticipated operating and financial performance compared with targeted goals; and

•	Our size and complexity compared with companies in our compensation peer group.

•	the economic conditions in the United States and abroad;

•	the company's business plan and underlying assumptions;

•	the goal of maintaining alignment between our senior management and our stockholders through the use of short- and long-term, performance-based compensation;

•	the benefits of maintaining a consistent approach to compensation and the structure of our programs through business cycles;

•	the anticipated performance of the company's compensation programs based on the company's business plan and current financial position; and

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•	information and reports prepared by proxy advisors, including Glass, Lewis & Co. and Institutional Shareholder Services Inc.

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•	level of responsibility;

•	prior experience;

•	base salaries paid for comparable positions by our compensation peer group; and

•	the relationship among base salaries paid within our company.

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•	net periodic benefit income relating to the Union VEBA Trust and the VEBA that provides healthcare related benefits for certain other retirees and their spouse and eligible dependents;

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•	an annualized economic equity grant value of long-term incentives between the 50th and the 65th percentiles of our compensation peer group;

•	balanced short-term and long-term goals, with:

•	over 50% of the Chief Executive Officer's target total compensation being delivered through long-term incentives; and

•	over 40% of the target total compensation for the other named executive officers being delivered through long-term incentives;

•	internal compensation balance; and

•	recognition of differing position responsibilities.

(1)

The restrictions on 100% of the shares of restricted stock granted will lapse on March 5, 2018 or earlier if the named executive officer's employment terminates as a result of death or disability, the named executive officer's employment is terminated by us without cause, the named executive officer's employment is voluntarily terminated by him for good reason or in the event of a change in control. If the employment of an named executive officer terminates before March 5,

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(2)	The table below sets forth the number of performance shares that will vest for each of Messrs. Hockema, Rinkenberger, Donnan, Harvey and Barneson under our 2015 - 2017 LTI Program at each performance level:

•	the threshold number of performance shares reflects that no performance shares will vest in 2018 under our 2015-2017 LTI Program unless our company's performance exceeds the threshold performance required over the 2015 through 2017 performance period;

•

the target number of performance shares was calculated by dividing the applicable percentage (i.e., 64% for Mr. Hockema and 50% for the other named executive officers) of the target monetary value by the sum of (i) the average of the closing prices of our company's common stock for the 20 trading days prior to the grant date, which was $73.71 per share, reduced by (ii) 25.93%, the discount factor provided by Meridian in connection with the calculation of the economic value of the performance shares for purposes of determining the number of performance shares to be granted on the grant date; and

•	the maximum number of performance shares was calculated by dividing an amount equal to twice the target monetary value by the economic value of each performance share on the grant date.

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•	the Kaiser Aluminum Savings and Investment Plan, a tax-qualified profit-sharing and 401(k) plan (which we refer to as our Savings Plan); and

•	a nonqualified and unsecured deferred compensation plan intended to restore benefits that would be payable to designated participants in the Savings Plan but for the limitations on benefit accruals and payments imposed by the Code (which we refer to as our Restoration Plan).

•	A company match of the employee's pre-tax deferrals under our Savings Plan;

•	A company contribution to the employee's account under our Savings Plan; and

•	A company contribution to the employee's account under our Restoration Plan.

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•	provide an economic incentive for Mr. Hockema to delay his retirement until at least December 2018;

•	improve our ability to retain other key members of senior management; and

•	provide assurance to our customers and other stakeholders of the continuity of senior management for an extended period.

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(1)

Reflects the aggregate grant date fair value of restricted stock and performance share awards to our named executive officers determined in accordance with Financial Accounting Standards Board Accounting Standard Code Topic 718 (referred to herein as ASC Topic 718), without regard to potential forfeiture. For Mr. Harvey, the 2014 amount includes the aggregate grant date fair value of 25,000 shares of restricted stock granted to him effective June 4, 2014 in connection with his appointment as Executive Vice President - Fabricated Products and assumption of additional responsibilities. The aggregate grant date fair value of the performance share awards reflected in this table has been determined assuming the probable outcome of the performance condition on the date of the grant and without adjustment for actual performance during the period and using a Monte Carlo simulation of future stock prices of our company and our peer companies on the S&P 600 SmallCap Materials Sector Index. The aggregate grant date fair value of the 2015 performance share awards determined assuming the probable outcome of the performance condition and assuming an outcome of the performance condition at the maximum level are as follows:

(2)	Reflects payments earned under our short-term incentive plans.

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(3)

Reflects the aggregate change in actuarial present value of the named executive officer's accumulated benefit under a defined pension benefit plan previously maintained by us for our salaried employees, which we refer to as our Old Pension Plan, during the applicable fiscal year, calculated by (a) assuming mortality according to the RP-2014 White Collar Healthy Annuitant mortality table projected with Scale MP-2014 as of December 31, 2014 and the RP-2014 White Collar Healthy Annuitant mortality table, adjusted to 2006, and then projected forward with Scale MP-2015 as of December 31, 2015 and (b) applying a discount rate of 3.40%, 3.60% and 3.90% per annum for 2013, 2014 and 2015, respectively, to determine the actuarial present value of the accumulated benefit at December 31 of the preceding year and a discount rate of 3.40%, 3.40% and 3.60% per annum, respectively, to determine the actuarial present value of the accumulated benefit at December 31 of the applicable year. Effective December 17, 2003, the Pension Benefit Guaranty Corporation, or PBGC, terminated and effectively assumed responsibility for making benefit payments in respect of our Old Pension Plan, whereupon all benefit accruals under the Old Pension Plan ceased and benefits available thereunder to certain salaried employees, including Mr. Hockema, were significantly reduced due to the limitations on benefits payable by the PBGC. Above-market or preferential earnings are not available under our Restoration Plan, which is our only plan or arrangement pursuant to which compensation may be deferred on a basis that is not tax-qualified, or any of our other benefit plans.

(4)

Includes (a) contributions made or to be made by us under our Savings Plan, (b) contributions made or to be made by us under our Restoration Plan (which is intended to restore the benefit of contributions that we would have otherwise paid to participants under our Savings Plan but for limitations imposed by the Code), (c) dividend and dividend equivalent payments which were not factored into the reported grant date fair value of the restricted stock and performance share awards, and (d) the costs to us of perquisites and other personal benefits. See the table set forth under "- All Other Compensation" below for information regarding each such component.

•	For 2015 Mr. Hockema, 17.8%; Mr. Harvey, 24.9%; Mr. Rinkenberger, 19.0%; Mr. Donnan, 24.2%; and Mr. Barneson, 27.4%;

•	For 2014, Mr. Hockema, 18.2%; Mr. Harvey, 24.6%; Mr. Rinkenberger, 12.0%; Mr. Donnan, 23.8%; and Mr. Barneson, 25.9%; and

•	For 2013 Mr. Hockema, 18.6%; Mr. Harvey, 23.6%; Mr. Rinkenberger, 23.9%; and Mr. Donnan, 23.0%.

(1)	Represents reimbursement of relocation and temporary living costs incurred by Mr. Harvey in connection with his relocation from North Carolina to California, where our corporate office is located.

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(1)

Reflects the threshold, target and maximum award amounts under our 2015 STI Plan for our named executive officers. No awards are payable when performance does not reach the threshold performance level. Under our 2015 STI Plan, if the threshold performance level was reached, participants were eligible to receive a cash incentive award between one-half and three times the participant's target award amount. See the "Non-Equity Incentive Plan Compensation" column of the Summary Compensation Table for the actual monetary awards paid to the named executive officers under the 2015 STI Plan in March 2016.

(2)

Reflects the number of performance shares that will become vested for each of the named executive officers under our 2015 - 2017 LTI Program in 2018 at the threshold, target and maximum performance levels. No performance shares will vest under the 2015 - 2017 LTI Program unless our company's performance exceeds the threshold performance required during the three-year performance period. The number of performance shares, if any, that vest base on the level of performance required during the three-year performance period will vest on the later to occur of March 5, 2018 and the date on which the compensation committee certifies the performance level achieved. If, prior to December 31, 2017, the named executive officer's employment terminates as a result of death or disability, the target number of performance shares will vest. If, prior to December 31, 2017, the named executive officer's employment is terminated by us without cause or is voluntarily terminated by him for good reason, the performance shares granted to him will remain outstanding and the number of performance shares, if any, that will vest upon the vesting date will be determined based on the performance level achieved during the three-year performance period. If, prior to December 31, 2017, a change in control occurs, the performance shares granted to him will vest immediately and the number of performance shares, if any, that will vest upon the change in control date will be determined based on the performance level achieved during the performance period through the change in control date. If, prior to the vesting date, the employment of a named executive officer terminates as a result of his retirement at or after age 65, the performance shares granted to him will remain outstanding and the number of performance shares, if any, that will vest upon the vesting date will be determined based on the performance level achieved during the three-year performance period and prorated based on the actual days of the named executive officer's employment during the performance period. In connection with the issuance or delivery of shares of common stock after the performance period has ended, the named executive officer will also receive a cash payment equal in amount to the dividends and distributions that such named executive officer would have received if the number of shares of common stock to be issued or delivered had been issued and outstanding and held of record by such named executive officer from the date of grant through the date of issuance or delivery of such shares.

(3)

Reflects the aggregate grant date fair value of restricted stock and performance share awards to our named executive officers determined in accordance with ASC Topic 718, without regard to potential forfeiture. The aggregate grant date fair value of the performance share awards reflected in this table has been determined assuming the probable outcome of the performance condition on the date of the grant and without adjustment for actual performance during the period and using

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(4)

Reflects the number of shares of restricted stock received by the named executive officer pursuant to awards granted effective March 5, 2015. The restrictions on 100% of the shares of restricted stock granted will lapse on March 5, 2018 or earlier if the named executive officer's employment terminates as a result of death or disability, the named executive officer's employment is terminated by us without cause, the named executive officer's employment is voluntarily terminated by him for good reason or in the event of a change in control. If the employment of an named executive officer terminates before March 5, 2018 as a result of his retirement at or after age 65, the shares of restricted stock granted to him will remain outstanding and the restrictions on a prorated portion of such shares, determined based on the actual days of his employment during the restriction period, will lapse on March 5, 2018. The named executive officer will receive all dividends and other distributions paid with respect to the shares of restricted stock he holds, but if any of such dividends or distributions are paid in shares of our capital stock, such shares will be subject to the same restrictions on transferability as are the shares of restricted stock with respect to which they were paid.

•	base salary earned through the date of such termination;

•	except in the case of a termination by us for cause, earned but unpaid incentive awards;

•	accrued but unpaid vacation;

•	benefits under our employment benefit plans to the extent vested and not forfeited on the date of such termination; and

•	benefit continuation and conversion rights to the extent provided under our employment benefit plans.

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•	the employee received severance compensation or welfare benefit continuation pursuant to a Change in Control Agreement (described below) or any other agreement;

•	the employee's employment is terminated other than by us without cause; or

•	the employee declined to sign, or subsequently revokes, a designated form of release.

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•	the participant's employment is terminated other than by us without cause or by the participant for good reason; or

•	the participant declines to sign, or subsequently revokes, a designated form of release.

•	three times (for Mr. Barneson) or two times (for Messrs Harvey, Rinkenberger, and Donnan) the sum of his base pay and most recent short-term incentive target;

•	a prorated portion of his short-term incentive target for the year of termination; and

•	a prorated portion of his long-term incentive target in effect for the year of his termination, provided that such target was achieved.

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•	for our employees who were employed with us on or before January 1, 2004, we contribute in a range from 2% to 10% of the total of the employee's base salary and short-term incentive award, based upon the sum of the employee's age and years of continuous service as of January 1, 2004; and

•	for our employees who were first employed with us after January 1, 2004, we contribute 2% of the total of the employee's base salary and short-term incentive award.

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•	if our matching contributions to a participant under the Savings Plan are limited in any year, we will make an annual contribution to that participant's account under the Restoration Plan equal to the difference between:

•	the matching contributions that we could have made to that participant's account under the Savings Plan if the Code did not impose any limitations; and

•	the maximum contribution we could in fact make to that participant's account under the Savings Plan in light of the limitations imposed by the Code; and

•	annual fixed-rate contributions to the participant's account under the Restoration Plan are made in an amount equal to between 2% and 10% of the participant's excess compensation, as defined in Section 401(a)(17) of the Code.

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(1)	Reflects option rights granted to the named executive officer effective April 3, 2007. The option rights became exercisable as to one-third of the total number of shares of common stock for which they are exercisable on each of April 3, 2008, April 3, 2009 and April 3, 2010. The option rights expire on April 3, 2017, unless terminated earlier in accordance with their terms.

(2)	Reflects the aggregate market value determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Stock Market on December 31, 2015.

(3)

For named executive officers other than Mr. Hockema, reflects the number of shares of restricted stock received by the named executive officer pursuant to awards granted effective March 5, 2013; for Mr. Hockema, reflects the number of shares of restricted stock received by him effective March 5, 2013 less the number of shares withheld to satisfy the withholding tax obligations resulting from the recognition of income at the time of grant because Mr. Hockema had previously reached age 65 on October 30, 2011. The restrictions on all such shares lapsed on March 5, 2016.

(4)

Reflects the number of shares of restricted stock received by the named executive officer pursuant to awards granted effective March 5, 2014. The restrictions on all such shares will lapse on March 5, 2017 or earlier if the named executive officer’s employment terminates as a result of death or disability, the named executive officer’s employment is terminated by us without cause, the named executive officer’s employment is voluntarily terminated by him for good reason or in the event of a change in control. If, prior to March 5, 2017, the employment of a named executive officer, other than Mr. Hockema, terminates as a result of his retirement at or after age 65, the shares of restricted stock granted to him will remain outstanding and the restrictions on 100% of such share will lapse on March 5, 2017. If, prior to March 5, 2017, Mr. Hockema's employment terminates as a result of his retirement, the shares of restricted stock granted to him will remain outstanding and the restriction on a prorated portion of such shares, determined based on the actual days of Mr. Hockema's employment during the restriction period, will lapse on March 5, 2017.

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(5)	Reflects the number of shares of restricted stock received by the named executive officer pursuant to awards granted effective March 5, 2015. See Note 4 to the table set forth under "Executive Compensation - Grants of Plan-Based Awards" above for more information on the restricted stock granted to the named executive officers effective March 5, 2015.

(6)

Reflects the target number of performance shares received by the named executive officer pursuant to awards granted effective March 5, 2013. Such target number is approximately one-half of the performance shares received by the named executive officer pursuant to awards granted effective March 5, 2013. The number of performance shares earned based on the level of performance achieved during the three-year performance period vested on March 5, 2016. The compensation committee certified the performance level achieved during the three-year performance period on March 5, 2015 and, based on the certified performance level, 64% of the target performance shares received by the named executive officers were earned.

(7)

Reflects the target number of performance shares received by the named executive officer pursuant to awards granted effective March 5, 2014. Such target number is approximately one-half of the performance shares received by the named executive officer pursuant to awards granted effective March 5, 2014. The number of performance shares, if any, that vest based on the level of performance achieved during the three-year performance period will vest on the later to occur of March 15, 2017 and the date on which the compensation committee certifies the performance level achieved during the three-year performance period. If, prior to December 31, 2016, the named executive officer’s employment terminates as a result of death or disability, the target number of performance shares will vest. If, prior to the vesting date, the named executive officer’s employment is terminated by us without cause or is voluntarily terminated by him for good reason, the performance shares granted to him will remain outstanding and the number of performance shares, if any, that will vest upon the vesting date will be determined based on the performance level achieved during the three-year performance period. If, prior to December 31, 2016, a change in control occurs, the performance shares granted to him will vest immediately and the number of performance shares, if any, that will vest will be determined based on the performance level achieved during the performance period through the change in control date. If, prior to the vesting date, the employment of a named executive officer, other than Mr. Hockema, terminates as a result of his retirement at or after age 65, the performance shares granted to him will remain outstanding and the number of performance shares, if any, that will vest on the vesting date will be determined based on the performance level achieved during the applicable three-year performance period. If, prior to the vesting date, Mr. Hockema's employment terminates as a result of his retirement, the performance shares granted to him will remain outstanding and the number of performance shares, if any, that will vest on the vesting date will be determined based on the performance level achieved during the applicable three-year performance period and prorated based on the actual days of Mr. Hockema's employment during the performance period. Each performance share that becomes vested entitles the participant to receive one share of our common stock.

(8)

Reflects the target number of performance shares received by the named executive officer pursuant to awards granted effective March 5, 2015. Such target number is approximately one-half of the performance shares received by the named executive officer pursuant to awards granted effective March 5, 2015. See Note 2 to the table set forth under "- Grants of Plan-Based Awards in 2015" above for more information on the performance shares granted to the named executive officers effective March 5, 2015.

(1)	Reflects the aggregate market value of (i) restricted shares that vested on March 5, 2015, determined based on a per share price of $75.41, the closing price per share of our common stock as reported on the Nasdaq Stock Market on the vesting

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(1)	Determined (a) assuming mortality according to the RP-2014 White Collar Healthy Annuitant mortality table, adjusted for 2006 and then projected with Scale MP-2015 and (b) applying a discount rate of 3.90% per annum.

(1)	In each case, 100% of such amount is included in the amounts for 2015 reflected in the "All Other Compensation" column of the Summary Compensation Table above.

(2)	Amounts included in this column reflect the change in market value of the investments made under the Restoration Plan and do not include amounts reflected in column (a).

(3)	Amounts included in this column do not include above-market or preferential earnings (of which there were none) and, accordingly, such amount is not included in the "Change in Pension Value and Nonqualified Deferred Compensation Earnings" column of the Summary Compensation Table above.

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•	voluntary termination by the named executive officer prior to age 65, except for Mr. Hockema, who turned age 65 during 2011;

•	termination by us for cause;

•	termination by us without cause or by the named executive officer with good reason;

•	termination by us without cause or by the named executive officer with good reason following a change in control;

•	termination at retirement at or after age 65;

•	termination as a result of disability; or

•	termination as a result of death.

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(1)	Mr. Hockema reached age 65 on October 30, 2011. Accordingly, any voluntary termination by Mr. Hockema would be treated as retirement at or after age 65. See "Retirement At or After Age 65" column of this table.

(2)	Assumes that there is no earned but unpaid base salary at the time of termination.

(3)

Under our 2015 STI Plan, Mr. Hockema's target award for 2015 was $604,000, but his award could have ranged from a threshold of $302,000 to a maximum of $1,812,000, or could have been zero if the threshold performance was not achieved. Mr. Hockema's award under our 2015 STI Plan was determined in March 2016 to be $732,048. Pursuant to Mr. Hockema's employment agreement, we must pay Mr. Hockema or his estate any earned but unpaid short-term incentive unless his employment is terminated by us for cause. Under Mr. Hockema's employment agreement, if his employment had been terminated during 2015 but prior to December 31, 2015, Mr. Hockema's award for 2015 under our 2015 STI Plan would have been determined based on actual performance and prorated for the actual number of days of Mr. Hockema's employment in 2015, provided that Mr. Hockema would have received no award for 2015 under our 2015 STI Plan if his employment had been terminated by us for cause. Under Mr. Hockema's employment agreement, if his employment had been terminated on December 31, 2015, the last day of our 2015 fiscal year, Mr. Hockema would have been entitled to full payment of his award under the 2015 STI Plan unless his employment had been terminated by us for cause.

(4)	Assumes that Mr. Hockema used all of his 2015 vacation and that he had five weeks of accrued vacation for 2016.

(5)	Under Mr. Hockema's employment agreement, if Mr. Hockema's employment is terminated by us without cause or is voluntarily terminated by him for good reason, we must make a lump-sum payment to Mr. Hockema in an amount equal to 3.37 times his base salary for the fiscal year in which such termination occurs.

(6)	Under Mr. Hockema's employment agreement, if Mr. Hockema's employment is terminated by us without cause or is voluntarily terminated by him for good reason within two years following a change in control, we must make a lump-sum payment to Mr. Hockema in an amount equal to 5.05 times his base salary for the fiscal year in which such termination occurs.

(7)

Under Mr. Hockema's employment agreement, if Mr. Hockema's employment is terminated by us without cause or is voluntarily terminated by him for good reason, we must continue his medical and dental benefits for two years, or, if such termination occurs within two years following a change in control, three years, commencing on the date of such termination. The table reflects the present value of such medical and dental benefits at December 31, 2015 determined (a) assuming family coverage in a consumer-driven health plan and a premium dental plan throughout the applicable benefit

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(8)

Under Mr. Hockema's employment agreement, if Mr. Hockema's employment is terminated by us without cause or is voluntarily terminated by him for good reason, we must continue his disability benefits for two years, or, if such termination occurs within two years following a change in control, three years, commencing on the date of such termination. This table reflects the present value of such disability benefits at December 31, 2015 determined (a) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (b) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (c) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (d) applying a discount rate of 3.90% per annum.

(9)

Reflects the actuarial present value of Mr. Hockema's disability benefits at December 31, 2015 determined (a) assuming full disability at December 31, 2015, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (c) applying a discount rate of 3.90% per annum. Such disability benefits would be paid by a third-party insurer and not by us.

(10)

Under Mr. Hockema's employment agreement, if Mr. Hockema's employment is terminated by us without cause or is voluntarily terminated by him for good reason, we must continue his life insurance benefits for two years, or, if such termination occurs within two years following a change in control, three years, commencing on the date of such termination. The table reflects the present value of such life insurance benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period at Mr. Hockema's current election of coverage, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2015 White Collar Healthy Annuitant Mortality Table with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Hockema's death had occurred on December 31, 2015 other than while traveling on company-related business. Such life insurance benefit would have been paid by a third-party insurer and not by us. We maintain a travel and accidental death policy for certain employees, including Mr. Hockema, that would provide a $1,000,000 death benefit payable to Mr. Hockema's estate if his death occurs during company-related travel. Such death benefit would be paid by a third-party insurer and not by us.

(12)

We do not have an obligation to make excise payments to Mr. Hockema. Mr. Hockema's employment agreement instead provides that, if any payments to Mr. Hockema would be subject to a federal excise tax by reason of being considered contingent on a change in control, then such payments will be reduced to the minimum extent necessary so that no portion of such payments, as so reduced, is subject to such tax, except that such a reduction will be made only if and to the extent such reduction would result in an increase in the aggregate payment on an after-tax basis. It is estimated that, if Mr. Hockema's employment had been terminated on December 31, 2015 by us without cause or by him for good reason following a change in control on such date, $3,286,787 owing to Mr. Hockema would have been subject to a federal excise tax by reason of being considered contingent on a change in control and, accordingly, such payments would have been reduced.

(13)

If, on December 31, 2015, Mr. Hockema's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Hockema would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Hockema in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to him effective March 5, 2014 and March 5, 2015 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Hockema in respect to such performance shares to be determined based on the performance level achieved during the applicable three-year performance period; in such instances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 29,988, the number of shares of restricted stock held by Mr. Hockema on December 31, 2015, (ii) 17,215, the actual number of shares of common stock received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 24,401 and 23,459, the target number of shares of common stock that could be received by Mr. Hockema in respect of

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(14)

If, on December 31, 2015, there had been a change in control and Mr. Hockema's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Hockema would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Hockema in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to Mr. Hockema effective March 5, 2014 and March 5, 2015 would have immediately vested, with the number of common stock, if any, to be received by Mr. Hockema in respect to such performance shares to be determined based on the performance level achieved during the applicable performance period through the date of such change in control; in such instances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 29,988, the number of shares of restricted stock held by Mr. Hockema on December 31, 2015, (ii) 17,215, the actual number of shares of common stock received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 48,803 and 46,918, the number of shares of common stock that would have been received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015, respectively, based on the performance level achieved during the applicable performance period through the date of the change in control. Pursuant to the terms of the performance shares granted to Mr. Hockema effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Hockema will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Hockema effective March 5, 2014, an amount equal to the cash dividends he would have received if 48,803 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Hockema effective March 5, 2015, an amount equal to the cash dividends he would have received if 46,918 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(15)

If Mr. Hockema had retired on December 31, 2015, then the shares of restricted stock and performance shares that were held by Mr. Hockema on December 31, 2015 would have remained outstanding, with the restrictions on such shares of restricted stock to lapse in each case on the third anniversary of the date of grant and with the number of shares of common stock, if any, to be received by Mr. Hockema in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance periods, except that the shares of restricted stock granted to Mr. Hockema effective March 5, 2014 and March 5, 2015 and shares of common stock to be received in respect of performance shares granted to Mr. Hockema effective March 5, 2014 and March 5, 2015 would be prorated based on actual days of Mr. Hockema's employment during the applicable restriction or performance period; in such instances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 7,449, the number of shares of restricted stock held by Mr. Hockema that were granted to him effective March 5, 2013, (ii) 6,983 and 3,033, the number of shares of restricted stock held by Mr. Hockema that were granted to him effective March 5, 2014 and March 5, 2015, respectively, prorated based on actual days of Mr. Hockema's employment during the applicable restriction period, (iii) 17,215, the actual number of shares of common stock received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2013 based on the performance

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(16)

If, on December 31, 2015, Mr. Hockema's employment had been terminated as a result of his death or disability, then (a) the restrictions on all shares of restricted stock that were held by Mr. Hockema would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Hockema in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the target number of performance shares granted to him effective March 5, 2014 and March 5, 2015 would have vested; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 29,988, the number of shares of restricted stock held by Mr. Hockema on December 31, 2015, (ii) 17,215, the actual number of shares of common stock received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 24,401 and 23,459, the target number of shares of common stock that would be received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015, respectively. Pursuant to the terms of the performance shares granted to Mr. Hockema effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Hockema will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Hockema effective March 5, 2014, an amount equal to the cash dividends he would have received if 24,401 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Hockema effective March 5, 2015, an amount equal to the cash dividends he would have received if 23,459 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(17)

Reflects the spread, if any, of (a) the aggregate market value of the shares of common stock purchasable upon exercise of the option rights which would have vested early due to Mr. Hockema's termination, determined based on a per share price of $83.66, the closing price per share of common stock as reported on the Nasdaq Global Select Market on December 31, 2015, over (b) the aggregate exercise price required to purchase such shares upon exercise of such option rights. All option rights held by Mr. Hockema on December 31, 2015 had previously vested. Accordingly, no spread is reported in this table.

(18)

Under our Restoration Plan, Mr. Hockema is entitled to a distribution of his account balance six months following his termination, except that he will forfeit the entire amount of matching and fixed rate contributions made by us to his account if his employment is terminated for cause. In addition, under our Savings Plan, upon termination of employment, Mr. Hockema is eligible to receive a distribution of his vested balance under the plan; however, such balance is not reflected in this table.

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(1)

Under our Salaried Severance Plan, if Mr. Harvey's employment is terminated by us without cause, Mr. Harvey is entitled to (a) a lump-sum payment equal to his weekly base salary multiplied by 26 weeks, which we referred to as the continuation period, determined based on his number of years of full employment as of December 31, 2015, and (b) continuation of his medical and dental, disability, and life insurance benefits following the termination of employment for a period not to exceed the shorter of his continuation period and the period commencing on the termination of employment and ending on the date he is no longer eligible for coverage under COBRA.

(2)

Under Mr. Harvey's Change in Control Agreement, if Mr. Harvey's employment is terminated by us without cause or is voluntarily terminated by him for good reason within the period beginning 90 days prior to a change in control and ending two years following a change in control, Mr. Harvey is entitled to (a) a lump-sum payment equal to two times the sum of his base salary and most recent short-term incentive target, (b) continuation of his medical and dental, disability, and life insurance benefits for two years commencing on the date of such termination, and (c) continuation of his perquisites for two years commencing on the date of such termination.

(3)	Notwithstanding the fact that Mr. Harvey had not reached age 65 as of December 31, 2015, this column is provided for illustrative purposes.

(4)	Assumes that there is no earned but unpaid base salary at the time of termination.

(5)

Under our 2015 STI Plan, Mr. Harvey's target award for 2015 was $340,000, but his award could have ranged from a threshold of $170,000 to a maximum of $1,020,000, or could have been zero if the threshold performance was not achieved. Mr. Harvey's award under our 2015 STI Plan was determined in March 2016 to be $412,080. If Mr. Harvey's employment had terminated on December 31, 2015, Mr. Harvey would have been entitled to full payment of his award under the 2015 STI Plan unless his employment had been terminated by us for cause or voluntarily terminated by him. Under the 2015 STI Plan, Mr. Harvey would have been entitled to a prorated award under the 2015 STI Plan if his employment had been terminated during 2015 but prior to December 31, 2015 and his employment had been terminated as a result of death, disability or retirement at or after age 65. Under Mr. Harvey's Change in Control Agreement, if his employment had been terminated by us without cause or by him for good reason within the period commencing 90 days prior to a change in control and ending two years following a change in control and such termination had occurred during 2015 other than on December 31, 2015, Mr. Harvey's target award for 2015 under our 2015 STI Plan would have been prorated for the actual number of days of Mr. Harvey's employment in 2015 and Mr. Harvey would have been entitled to payment of such amount.

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(6)	Assumes that Mr. Harvey used all of his 2015 vacation and that he had five weeks of accrued vacation for 2016.

(7)

This table reflects the present value of Mr. Harvey's medical and dental benefits at December 31, 2015 determined (a) assuming family coverage in a consumer-driven health plan and a premium dental plan throughout his applicable benefit continuation period and (b) based on current COBRA coverage rates for 2016 and assuming a 10% increase in the cost of medical and dental coverage for 2017 as compared to 2016.

(8)

This table reflects the present value of Mr. Harvey's disability benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum.

(9)

Reflects the actuarial present value of Mr. Harvey's disability benefits at December 31, 2015 determined (a) assuming full disability at December 31, 2015, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (c) applying a discount rate of 3.90% per annum. Such disability benefits would be paid by a third-party insurer and not by us.

(10)

This table reflects the present value of Mr. Harvey's life insurance benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period at his current election of coverage, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2015 White Collar Healthy Annuitant Mortality Table with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Harvey's death had occurred on December 31, 2015 other than while traveling on company-related business. Such life insurance benefit would have been paid by a third-party insurer and not by us. We maintain a travel and accidental death policy for certain employees, including Mr. Harvey, that would provide an additional $1,000,000 death benefit payable to Mr. Harvey's estate if his death occurs during company-related travel. Such death benefit would be paid by a third-party insurer and not by us.

(12)	This table reflects the estimated cost to us of continuing Mr. Harvey's perquisites for such two-year period. Such amount has been estimated by multiplying the cost of Mr. Harvey's vehicle allowance and club membership dues for 2015 by two.

(13)

Under Mr. Harvey's Change in Control Agreement, in general, if any payments to Mr. Harvey would be subject to federal excise tax or any similar state or local tax by reason of being considered contingent on a change in control, we must pay to Mr. Harvey an additional amount such that, after satisfaction of all tax obligations imposed on such payments, Mr. Harvey retains an amount equal to the federal excise tax or similar state or local tax imposed on such payments. However, if no such federal excise tax or similar state or local tax would apply if the aggregate payments were reduced by 5%, then the aggregate payments to Mr. Harvey will be reduced by the amount necessary to avoid application of such federal excise tax or similar state or local tax. This table reflects an estimate of any such additional amount that we would have been obligated to pay Mr. Harvey, or any such reduction to the aggregate payments to Mr. Harvey that would have occurred, if his employment had been terminated on December 31, 2015 by us without cause or by him for good reason following a change in control on such date.

(14)

If, on December 31, 2015, Mr. Harvey's employment been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Harvey would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Harvey in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to him effective March 5, 2014 and March 5, 2015 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Harvey in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to (i) 39,187, the number of restricted stock that were held by Mr. Harvey on December 31, 2015, (ii) 3,391, the actual number of shares of common stock received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 5,052

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(15)

If, on December 31, 2015, there had been a change in control and Mr. Harvey's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Harvey would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Harvey in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to Mr. Harvey effective March 5, 2014 and March 5, 2015 would have immediately vested, with the number of shares of common stock, if any, to be received by Mr. Harvey in respect of such performance shares to be determined based on the performance level achieved during the applicable performance period through the date of such change in control; in such instances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 39,187, the number of shares of restricted stock that were held by Mr. Harvey on December 31, 2015, (ii) 3,391, the actual number of shares of common stock received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 10,105 and 13,189, the number of shares of common stock that would have been received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015 based on the performance level achieved during the applicable performance period through the date of the change in control. Pursuant to the terms of the performance shares granted to Mr. Harvey effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Harvey will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Harvey effective March 5, 2014, an amount equal to the cash dividends he would have received if 10,105 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Harvey effective March 5, 2015, an amount equal to the cash dividends he would have received if 13,189 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(16)

If Mr. Harvey had qualified for retirement on December 31, 2015 and he had retired on such date, then the shares of restricted stock and performance shares that were held by Mr. Harvey would have remained outstanding, with the restrictions on such shares of restricted stock to lapse in each case on the third anniversary of the date of grant and with the number of shares of common stock, if any, to be received by Mr. Harvey in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance periods, except that the restriction on the shares of restricted stock granted to Mr. Harvey on June 4, 2014 would lapse on the fifth anniversary of the date of grant and the shares of restricted stock granted to Mr. Harvey effective March 5, 2015 and shares of common stock to be received in respect of performance shares granted to Mr. Harvey effective March 5, 2015 would be prorated based on actual days of Mr. Harvey's employment during the applicable restriction or performance period; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 33,667, the total number of shares of restricted stock that were granted to Mr. Harvey in 2013 and 2014, (ii) 1,515, the number of shares of restricted stock held by Mr. Harvey that were granted to him effective March 5, 2015, prorated based on actual days of Mr. Harvey's employment during the applicable restriction

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(17)

If, on December 31, 2015, Mr. Harvey's employment had been terminated as a result of his death or disability, then (a) the restrictions on all shares of restricted stock that were held by Mr. Harvey would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Harvey in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the target number of performance shares granted to him effective March 5, 2014 and March 5, 2015 would have vested; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to (i) 39,187, the number of shares of restricted stock that were held by Mr. Harvey on December 31, 2015, (ii) 3,391, the actual number of shares of common stock received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 5,052 and 6,594, the target number of shares of common stock that would be received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015, respectively. Pursuant to the terms of the performance shares granted to Mr. Harvey effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Harvey will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Harvey effective March 5, 2014, an amount equal to the cash dividends he would have received if 5,052 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Harvey effective March 5, 2015, an amount equal to the cash dividends he would have received if 6,594 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(18)

Reflects the spread, if any, of (a) the aggregate market value of the shares of common stock purchasable upon exercise of the option rights which would have vested early due to Mr. Harvey's termination, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, over (b) the aggregate exercise price required to purchase such shares upon exercise of such option rights. All option rights that were held by Mr. Harvey on December 31, 2015 had previously vested. Accordingly, no spread is reflected in this table.

(19)

Under our Restoration Plan, Mr. Harvey is entitled to a distribution of his account balance six months following his termination, except that he will forfeit the entire amount of matching and fixed rate contributions made by us to his account if he is terminated for cause. In addition, under our Savings Plan, upon termination of employment, Mr. Harvey is eligible to receive a distribution of his vested balance under the plan; however, such balance is not reflected in this table.

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(1)

Under our Salaried Severance Plan, if Mr. Rinkenberger's employment is terminated by us without cause, Mr. Rinkenberger is entitled to (a) a lump-sum payment equal to his weekly base salary multiplied by 20 weeks, which we refer to as the continuation period, determined based on his number of years of full employment as of December 31, 2015, and (b) continuation of his medical and dental, disability and life insurance benefits following the termination of employment for a period not to exceed the shorter of his continuation period and the period commencing on the termination of employment and ending on the date he is no longer eligible for coverage under COBRA.

(2)

Under Mr. Rinkenberger's Change in Control Agreement, if Mr. Rinkenberger's employment is terminated by us without cause or is voluntarily terminated by him for good reason within the period beginning 90 days prior to a change in control and ending two years following a change in control, Mr. Rinkenberger is entitled to (a) a lump-sum payment equal to two times the sum of his base salary and most recent short-term incentive target, (b) continuation of his medical and dental, disability, and life insurance benefits for two years commencing on the date of such termination, and (c) continuation of his perquisites for two years commencing on the date of such termination.

(3)	Notwithstanding the fact that Mr. Rinkenberger had not reached age 65 as of December 31, 2015, this column is provided for illustrative purposes.

(4)	Assumes that there is no earned but unpaid base salary at the time of termination.

(5)

Under our 2015 STI Plan, Mr. Rinkenberger's target award for 2015 was $289,600, but his award could have ranged from a threshold of $144,800 to a maximum of $868,800, or could have been zero if the threshold performance was not achieved. Mr. Rinkenberger's award under our 2015 STI Plan was determined in March 2016 to be $350,995. If Mr. Rinkenberger's employment had terminated on December 31, 2015, Mr. Rinkenberger would have been entitled to full payment of his award under the 2015 STI Plan unless his employment had been terminated by us for cause or voluntarily terminated by him. Under the 2015 STI Plan, Mr. Rinkenberger would have been entitled to a prorated award under the 2015 STI Plan if his employment had been terminated during 2015 but prior to December 31, 2015 and his employment had been terminated as a result of death, disability or retirement at or after age 65. Under Mr. Rinkenberger's Change in Control Agreement, if his employment had been terminated by us without cause or by him for good reason within the period commencing 90 days prior to a change in control and ending two years following a change in control and such termination had occurred during 2015 other than on December 31, 2015, Mr. Rinkenberger's target award for 2015 under our 2015 STI Plan would have been prorated for the actual number of days of Mr. Rinkenberger's employment in 2015 and Mr. Rinkenberger would have been entitled to payment of such amount.

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(6)	Assumes that Mr. Rinkenberger used all of his 2015 vacation and that he had five weeks of accrued vacation for 2016.

(7)

This table reflects the present value of Mr. Rinkenberger's medical and dental benefits at December 31, 2015 determined (a) assuming family coverage in a consumer-driven health plan and a premium dental plan throughout Mr. Rinkenberger's applicable benefit continuation period and (b) based on current COBRA coverage rates for 2016 and assuming a 10% increase in the cost of medical and dental coverage for 2017 as compared to 2016.

(8)

This table reflects the present value of Mr. Rinkenberger's disability benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2015 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum.

(9)

Reflects the actuarial present value of Mr. Rinkenberger's disability benefits at December 31, 2015 determined (a) assuming full disability at December 31, 2015, (b) assuming mortality according to the RP-2015 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (c) applying a discount rate of 3.90% per annum. Such disability benefits would be paid by a third-party insurer and not by us.

(10)

This table reflects the present value of Mr. Rinkenberger's life insurance benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period at his current election of the maximum available coverage, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2015 White Collar Healthy Annuitant Mortality Table with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Rinkenberger's death had occurred on December 31, 2015 other than while traveling on company-related business. Such life insurance benefit would have been paid by a third-party insurer and not by us. We maintain a travel and accidental death policy for certain employees, including Mr. Rinkenberger, that would provide an additional $1,000,000 death benefit payable to Mr. Rinkenberger's estate if his death occurs during company-related travel. Such death benefit would be paid by a third-party insurer and not by us.

(12)	This table reflects the estimated cost to us of continuing Mr. Rinkenberger's perquisites for the required two-year period. Such amount has been estimated by multiplying the cost of Mr. Rinkenberger's vehicle allowance for 2015 by two.

(13)

Under Mr. Rinkenberger's Change in Control Agreement, in general, if any payments to Mr. Rinkenberger would be subject to federal excise tax or any similar state or local tax by reason of being considered contingent on a change in control, we must pay to Mr. Rinkenberger an additional amount such that, after satisfaction of all tax obligations imposed on such payments, Mr. Rinkenberger retains an amount equal to the federal excise tax or similar state or local tax imposed on such payments. However, if no such federal excise tax or similar state or local tax would apply if the aggregate payments were reduced by 5%, then the aggregate payments to Mr. Rinkenberger will be reduced by the amount necessary to avoid application of such federal excise tax or similar state or local tax. This table reflects an estimate of any such additional amount that we would have been obligated to pay Mr. Rinkenberger, or any such reduction to the aggregate payments to Mr. Rinkenberger that would have occurred, if his employment had been terminated on December 31, 2015 by us without cause or by him for good reason following a change in control on such date.

(14)

If, on December 31, 2015, Mr. Rinkenberger's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock held by Mr. Rinkenberger would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Rinkenberger in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to him effective March 5, 2014 and March 5, 2015 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Rinkenberger in respect to such performance shares to be determined based on the performance level achieved during the applicable three-year performance period; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to (i) 15,191, the number of shares of restricted stock that were held by Mr. Rinkenberger on December 31, 2015,(ii) 4,099, the actual number of shares of common stock received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in

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(15)

If, on December 31, 2015, there had been a change in control and Mr. Rinkenberger's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Rinkenberger would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Rinkenberger in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to Mr. Rinkenberger effective March 5, 2014 and March 5, 2015 would have immediately vested, with the number of shares of common stock, if any, to be received by Mr. Rinkenberger in respect of such performance shares to be determined based on the performance level achieved during the applicable performance period through the date of such change in control; in such instances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 15,191, the number of shares of restricted stock that were held by Mr. Rinkenberger on December 31, 2015, (ii) 4,099, the actual number of shares of common stock received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 11,970 and 11,509, the number of shares of common stock that would have been received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015, respectively, based on the performance level achieved during the performance period through the date of the change in control. Pursuant to the terms of the performance shares granted to Mr. Rinkenberger effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Rinkenberger will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Rinkenberger effective March 5, 2014, an amount equal to the cash dividends he would have received if 11,970 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Rinkenberger effective March 5, 2015, an amount equal to the cash dividends he would have received if 11,509 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(16)

If Mr. Rinkenberger had qualified for retirement on December 31, 2015 and he had retired on such date, then the shares of restricted stock and performance shares that were held by Mr. Rinkenberger would have remained outstanding, with the restrictions on such shares of restricted stock to lapse in each case on the third anniversary of the date of grant and with the number of shares of common stock, if any, to be received by Mr. Rinkenberger in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance periods, except that the shares of restricted stock granted to Mr. Rinkenberger effective March 5, 2015 and shares of common stock to be received in respect of performance shares granted to Mr. Rinkenberger effective March 5, 2015 would be prorated based on actual days of Mr. Rinkenberger's employment during the applicable restriction or performance period; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 10,374, the number of shares of restricted stock granted to Mr. Rinkenberger effective March 5, 2013 and March 5, 2014, (ii) 1,322, the number of shares of restricted stock granted to Mr. Rinkenberger

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(17)

If, on December 31, 2015, Mr. Rinkenberger's employment had been terminated as a result of his death or disability, then (a) the restrictions on all shares of restricted stock that were held by Mr. Rinkenberger would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Rinkenberger in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the target number of performance shares granted to him effective March 5, 2014 and March 5, 2015 would have vested; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to (i) 15,191, the number of shares of restricted stock that were held by Mr. Rinkenberger on December 31, 2015,(ii) 4,099, the actual number of shares of common stock received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 5,985 and 5,754, the target number of shares of common stock that would be received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015, respectively. Pursuant to the terms of the performance shares granted to Mr. Rinkenberger effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Rinkenberger will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Rinkenberger effective March 5, 2014, an amount equal to the cash dividends he would have received if 5,985 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Rinkenberger effective March 5, 2015, an amount equal to the cash dividends he would have received if 5,754 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(18)

Reflects the spread, if any, of (a) the aggregate market value of the shares of common stock purchasable upon exercise of the option rights which would have vested early due to Mr. Rinkenberger's termination, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, over (b) the aggregate exercise price required to purchase such shares upon exercise of such option rights. All option rights that were held by Mr. Rinkenberger on December 31, 2015 had previously vested. Accordingly, no spread is reflected in this table.

(19)	Under our Restoration Plan, Mr. Rinkenberger is entitled to a distribution of his account balance six months following his termination, except that he will forfeit the entire amount of matching and fixed rate contributions made by us to his account if he is terminated for cause. In addition, under our Savings Plan, upon termination of employment, Mr.

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(1)

Under our Salaried Severance Plan, if Mr. Donnan's employment is terminated by us without cause, Mr. Donnan is entitled to (a) a lump-sum payment equal to his weekly base salary multiplied by 20 weeks (the maximum under the Salaried Severance Plan), which we refer to as the continuation period, determined based on his number of years of full employment as of December 31, 2015, and (b) continuation of his medical and dental, disability and life insurance benefits following the termination of employment for a period not to exceed the shorter of his continuation period and the period commencing on the termination of employment and ending on the date he is no longer eligible for coverage under COBRA.

(2)

Under Mr. Donnan's Change in Control Agreement, if Mr. Donnan's employment is terminated by us without cause or is voluntarily terminated by him for good reason within the period beginning 90 days prior to a change in control and ending two years following a change in control, Mr. Donnan is entitled to (a) a lump-sum payment equal to two times the sum of his base salary and most recent short-term incentive target, (b) continuation of his medical and dental, disability, and life insurance benefits for two years commencing on the date of such termination, and (c) continuation of his perquisites for two years commencing on the date of such termination.

(3)	Notwithstanding the fact that Mr. Donnan had not reached age 65 as of December 31, 2015, this column is provided for illustrative purposes.

(4)	Assumes that there is no earned but unpaid base salary at the time of termination.

(5)

Under our 2015 STI Plan, Mr. Donnan's target award for 2015 was $273,200, but his award could have ranged from a threshold of $136,600 to a maximum of $819,600, or could have been zero if the threshold performance was not achieved. Mr. Donnan's award under our 2015 STI Plan was determined in March 2016 to be $331,118. If Mr. Donnan's employment had terminated on December 31, 2015, Mr. Donnan would have been entitled to full payment of his award under the 2015 STI Plan unless his employment had been terminated by us for cause or voluntarily terminated by him. Under the 2015 STI Plan, Mr. Donnan would have been entitled to a prorated award under the 2015 STI Plan if his employment had been terminated during 2015 but prior to December 31, 2015 and his employment had been terminated as a result of death, disability or retirement at or after age 65. Under Mr. Donnan's Change in Control Agreement, if his employment had been terminated by us without cause or by him for good reason within the period commencing 90 days prior to a change in control and ending two years following a change in control and such termination had occurred during 2015 other than on December 31, 2015, Mr. Donnan's target award for 2015 under our 2015 STI Plan would have

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(6)	Assumes that Mr. Donnan used all of his 2015 vacation and that he had five weeks of accrued vacation for 2016.

(7)

This table reflects the present value of Mr. Donnan's medical and dental benefits at December 31, 2015 determined (a) assuming family coverage in a consumer-driven health plan and a premium dental plan throughout Mr. Donnan's applicable benefit continuation period and (b) based on current COBRA coverage rates for 2016 and assuming a 10% increase in the cost of medical and dental coverage for 2017 as compared to 2016.

(8)

This table reflects the present value of Mr. Donnan's disability benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum.

(9)

Reflects the actuarial present value of Mr. Donnan's disability benefits at December 31, 2015 determined (a) assuming full disability at December 31, 2015, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum. Such disability benefits would be paid by a third-party insurer and not by us.

(10)

This table reflects the present value of Mr. Donnan's life insurance benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period at his current election of coverage, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2015 White Collar Healthy Annuitant Mortality Table with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Donnan's death had occurred on December 31, 2015 other than while traveling on company-related business. Such life insurance benefit would have been paid by a third-party insurer and not by us. We maintain a travel and accidental death policy for certain employees, including Mr. Donnan, that would provide an additional $1,000,000 death benefit payable to Mr. Donnan's estate if his death occurs during company-related travel. Such death benefit would be paid by a third-party insurer and not by us.

(12)	This table reflects the estimated cost to us of continuing Mr. Donnan's perquisites for the required two-year period. Such amount has been estimated by multiplying the cost of Mr. Donnan's vehicle allowance and club membership dues for 2015 by two.

(13)

Under Mr. Donnan's Change in Control Agreement, in general, if any payments to Mr. Donnan would be subject to federal excise tax or any similar state or local tax by reason of being considered contingent on a change in control, we must pay to Mr. Donnan an additional amount such that, after satisfaction of all tax obligations imposed on such payments, Mr. Donnan retains an amount equal to the federal excise tax or similar state or local tax imposed on such payments. However, if no such federal excise tax or similar state or local tax would apply if the aggregate payments were reduced by 5%, then the aggregate payments to Mr. Donnan will be reduced by the amount necessary to avoid application of such federal excise tax or similar state or local tax. This table reflects an estimate of any such additional amount that we would have been obligated to pay Mr. Donnan, or any such reduction to the aggregate payments to Mr. Donnan that would have occurred, if his employment had been terminated on December 31, 2015 by us without cause or by him for good reason following a change in control on such date.

(14)

If, on December 31, 2015, Mr. Donnan's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Donnan would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Donnan in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to him effective March 5, 2014 and March 5, 2015 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Donnan in respect to such performance shares to be determined based on the performance level achieved during the three-year performance period; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on

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(15)

If, on December 31, 2015, there had been a change in control and Mr. Donnan's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Donnan would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Donnan in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to Mr. Donnan effective March 5, 2014 and March 5, 2015 would have immediately vested, with the number of common stock, if any, to be received by Mr. Donnan in respect of such performance shares to be determined based on the performance level achieved during the applicable performance period through the date of such change in control; in such instances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 13,210, the number of shares of restricted stock held by Mr. Donnan on December 31, 2015,(ii) 3,564, the actual number of shares of common stock received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 10,410 and 10,009, the number of shares of common stock that would have been received by Mr. Donnan in respect of the performance shares granted to him effective March 4, 2014 and March 5, 2015, respectively, based on the performance level achieved during the applicable performance period through the date of the change in control. Pursuant to the terms of the performance shares granted to Mr. Donnan effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Donnan will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Donnan effective March 5, 2014, an amount equal to the cash dividends he would have received if 10,410 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Donnan effective March 5, 2015, an amount equal to the cash dividends he would have received if 10,009 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(16)

If Mr. Donnan had qualified for retirement on December 31, 2015 and he had retired on such date, then the shares of restricted stock and performance shares that were held by Mr. Donnan would have remained outstanding, with the restrictions on such shares of restricted stock to lapse in each case on the third anniversary of the date of grant and with the number of shares of common stock, if any, to be received by Mr. Donnan in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance periods, except that the shares of restricted stock granted to Mr. Donnan effective March 5, 2015 and shares of common stock to be received in respect of performance shares granted to Mr. Donnan effective March 5, 2015 would be prorated based on actual days of Mr. Donnan's employment during the applicable restriction or performance period; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the

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(17)

If, on December 31, 2015, Mr. Donnan's employment had been terminated as a result of his death or disability, then (a) the restrictions on all shares of restricted stock that were held by Mr. Donnan would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Donnan in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the target number of performance shares granted to him effective March 5, 2014 and March 5, 2015 would have vested; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to (i) 13,210, the number of shares of restricted stock that were held by Mr. Donnan on December 31, 2015, (ii) 3,564, the actual number of shares of common stock received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 5,205 and 5,004, the target number of shares of common stock that would have been received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015, respectively. Pursuant to the terms of the performance shares granted to Mr. Donnan effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Donnan will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Donnan effective March 5, 2014, an amount equal to the cash dividends he would have received if 5,205 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Donnan effective March 5, 2015, an amount equal to the cash dividends he would have received if 5,004 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(18)

Reflects the spread, if any, of (a) the aggregate market value of the shares of common stock purchasable upon exercise of the option rights which would have vested early due to Mr. Donnan's termination, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, over (b) the aggregate exercise price required to purchase such shares upon exercise of such option rights. All option rights that were held by Mr. Donnan on December 31, 2015 had previously vested. Accordingly, no spread is reflected in this table.

(19)	Under our Restoration Plan, Mr. Donnan is entitled to a distribution of his account balance six months following his termination, except that he will forfeit the entire amount of matching and fixed rate contributions made by us to his account if he is terminated for cause. In addition, under our Savings Plan, upon termination of employment, Mr. Donnan

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(1)

Under our Salaried Severance Plan, if Mr. Barneson's employment is terminated by us without cause, Mr. Barneson is entitled to (a) a lump-sum payment equal to his weekly base salary multiplied by 26 weeks (the maximum under the Salaried Severance Plan), which we refer to as the continuation period, determined based on his number of years of full employment as of December 31, 2015, and (b) continuation of his medical and dental, disability and life insurance benefits following the termination of employment for a period not to exceed the shorter of his continuation period and the period commencing on the termination of employment and ending on the date he is no longer eligible for coverage under COBRA.

(2)

Under Mr. Barneson's Change in Control Agreement, if Mr. Barneson's employment is terminated by us without cause or is voluntarily terminated by him for good reason within the period beginning 90 days prior to a change in control and ending two years following a change in control, Mr. Barneson is entitled to (a) a lump-sum payment equal to three times the sum of his base salary and most recent short-term incentive target, (b) continuation of his medical and dental, disability and life insurance benefits for three years commencing on the date of such termination, and (c) continuation of his perquisites for two years commencing on the date of such termination.

(3)	Notwithstanding the fact that Mr. Barneson had not reached age 65 as of December 31, 2015, this column is provided for illustrative purposes.

(4)	Assumes that there is no earned but unpaid base salary at the time of termination.

(5)

Under our 2015 STI Plan, Mr. Barneson's target award for 2015 was $163,900, but his award could have ranged from a threshold of $81,950 to a maximum of $491,700, or could have been zero if the threshold performance was not achieved. Mr. Barneson's award under our 2015 STI Plan was determined in March 2016 to be $198,647. If Mr. Barneson's employment had terminated on December 31, 2015, Mr. Barneson would have been entitled to full payment of his award under the 2015 STI Plan unless his employment had been terminated by us for cause or voluntarily terminated by him. Under the 2015 STI Plan, Mr. Barneson would have been entitled to a prorated award under the 2015 STI Plan if his employment had been terminated during 2015 but prior to December 31, 2015 and his employment had been terminated as a result of death, disability or retirement at or after age 65. Under Mr. Barneson's Change in Control Agreement, if his employment had been terminated by us without cause or by him for good reason within the period commencing 90 days prior to a change in control and ending two years following a change in control and such termination had occurred during 2015 other than on December 31, 2015, Mr. Barneson's target award for 2015 under our 2015 STI Plan would have been prorated for the actual number of days of Mr. Barneson's employment in 2015 and Mr. Barneson would have been entitled to payment of such amount.

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(6)	Assumes that Mr. Barneson used all of his 2015 vacation and that he had five weeks of accrued vacation for 2016.

(7)

This table reflects the present value of Mr. Barneson's medical and dental benefits at December 31, 2015 determined (a) assuming family coverage in a consumer-driven health plan and a premium dental plan throughout the applicable benefit continuation period and (b) based on current COBRA coverage rates for 2016 and assuming a 10% increase in the cost of medical and dental coverage for 2017 as compared to 2016.

(8)

This table reflects the present value of Mr. Barneson's disability benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.690% per annum.

(9)

Reflects the actuarial present value of Mr. Barneson's disability benefits at December 31, 2015 determined (a) assuming full disability at December 31, 2015, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees, adjusted to 2006, and projected therefrom with MP-2015 Generational Mortality Improvement Projection, and (c) applying a discount rate of 3.690% per annum. Such disability benefits would be paid by a third-party insurer and not by us.

(10)

This table reflects the present value of Mr. Barneson's life insurance benefits at December 31, 2015 determined (a) assuming coverage throughout the applicable benefit continuation period at his current election of the maximum available coverage, (b) based on our current costs of providing such benefits and assuming such costs do not increase during the applicable benefit continuation period, (c) assuming we pay such costs throughout the applicable benefit continuation period in the same manner as we currently pay such costs, (d) assuming mortality according to the RP-2015 White Collar Healthy Annuitant Mortality Table with MP-2015 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.90% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Barneson's death had occurred on December 31, 2015 other than while traveling on company-related business. Such life insurance benefit would have been paid by a third-party insurer and not by us. We maintain a travel and accidental death policy for certain employees, including Mr. Barneson, that would provide an additional $1,000,000 death benefit payable to Mr. Barneson's estate if his death occurs during company-related travel. Such death benefit would be paid by a third-party insurer and not by us.

(12)	This table reflects the estimated cost to us of continuing Mr. Barneson's perquisites for the required thee-year period. Such amount has been estimated by multiplying the cost of Mr. Barneson's vehicle allowance for 2015 by three.

(13)

Under Mr. Barneson's Change in Control Agreement, in general, if any payments to Mr. Barneson would be subject to federal excise tax or any similar state or local tax by reason of being considered contingent on a change in control, we must pay to Mr. Barneson an additional amount such that, after satisfaction of all tax obligations imposed on such payments, Mr. Barneson retains an amount equal to the federal excise tax or similar state or local tax imposed on such payments. However, if no such federal excise tax or similar state or local tax would apply if the aggregate payments were reduced by 5%, then the aggregate payments to Mr. Barneson will be reduced by the amount necessary to avoid application of such federal excise tax or similar state or local tax. This table reflects an estimate of any such additional amount that we would have been obligated to pay Mr. Barneson, or any such reduction to the aggregate payments to Mr. Barneson that would have occurred, if his employment had been terminated on December 31, 2015 by us without cause or by him for good reason following a change in control on such date.

(14)

If, on December 31, 2015, Mr. Barneson's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Barneson would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Barneson in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to him effective March 5, 2014 and March 5, 2015 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Barneson in respect to such performance shares to be determined based on the performance level achieved during the three-year performance period; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to (i) 10,831, the number of shares of restricted stock that were held by Mr. Barneson on December 31, 2015, (ii) 2,922, the actual number of shares of common stock received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 4,268 and 4,103, the target number of shares of common stock that could be received by Mr. Barneson in respect of the performance

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(15)

If, on December 31, 2015, there had been a change in control and Mr. Barneson's employment had been terminated by us without cause or his employment had been voluntarily terminated by him for good reason, then (a) the restrictions on all shares of restricted stock that were held by Mr. Barneson would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Barneson in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the performance shares granted to Mr. Barneson effective March 5, 2014 and March 5, 2015 would have immediately vested, with the number of shares of common stock, if any, to be received by Mr. Barneson in respect of such performance shares to be determined based on the performance level achieved during the applicable performance period through the date of such change in control; in such instances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 10,831, the number of shares of restricted stock that were held by Mr. Barneson on December 31, 2015,(ii) 2,922, the actual number of shares of common stock received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 8,536 and 8,206, the number of shares of common stock that would have been received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015, respectively, based on the performance level achieved during the applicable performance period through the date of the change in control. Pursuant to the terms of the performance shares granted to Mr. Barneson effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Barneson will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Barneson effective March 5, 2014, an amount equal to the cash dividends he would have received if 8,536 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Barneson effective March 5, 2015, an amount equal to the cash dividends he would have received if 8,206 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(16)

If Mr. Barneson had qualified for retirement on December 31, 2015 and he had retired on such date, then the shares of restricted stock and performance shares that were held by Mr. Barneson would have remained outstanding, with the restrictions on such shares of restricted stock to lapse in each case on the third anniversary of the date of grant and with the number of shares of common stock, if any, to be received by Mr. Barneson in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance periods, except that the shares of restricted stock granted to Mr. Barneson effective March 5, 2015 and shares of common stock to be received in respect of performance shares granted to Mr. Barneson effective March 5, 2015 would be prorated based on actual days of Mr. Barneson's employment during the applicable restriction or performance period; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to the sum of (i) 7,396, the total number of shares of restricted stock granted to Mr. Barneson effective March 5, 2013 and March 5, 2014, (ii) 943, the number of shares of restricted stock granted to Mr. Barneson effective March 5, 2015, prorated based on actual days of Mr. Barneson's employment during the applicable restriction period, (iii) 2,922, the actual number of shares of common stock received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our

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(17)

If, on December 31, 2015, Mr. Barneson's employment had been terminated as a result of his death or disability, then (a) the restrictions on all shares of restricted stock that were held by Mr. Barneson would have lapsed, (b) the performance shares granted to him effective March 5, 2013 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Barneson in respect of such performance shares to be determined based on the performance level achieved during the applicable three-year performance period, and (c) the target number of performance shares granted to him effective March 5, 2014 and March 5, 2015 would have vested; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, of a number of shares equal to (i) 10,831, the number of shares of restricted stock that were held by Mr. Barneson on December 31, 2015, (ii) 2,922, the actual number of shares of common stock received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2013 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2016, and (iii) 4,268 and 4,103, the target number of shares of common stock that would have been received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2014 and March 5, 2015, respectively. Pursuant to the terms of the performance shares granted to Mr. Barneson effective March 5, 2014 and March 5, 2015, if the company declares cash dividends on our common stock and the record and payment dates for such dividends occur on or after the date of grant but before common shares are issued or delivered in respect of such performance shares, then, upon the issuance or delivery of such common shares in respect of such performance shares, Mr. Barneson will be entitled to also receive a payment equal to the cash dividends that he would have received if the number of common shares so issued or delivered to him had been issued and outstanding and held of record by him from the date of grant through such issuance or delivery; this table reflects (a) in respect of the performance shares granted to Mr. Barneson effective March 5, 2014, an amount equal to the cash dividends he would have received if 4,268 common shares had been issued and outstanding and held of record by him from March 5, 2014 through December 31, 2015 and (b) in respect of the performance shares granted to Mr. Barneson effective March 5, 2015, an amount equal to the cash dividends he would have received if 4,103 common shares had been issued and outstanding and held of record by him from March 5, 2015 through December 31, 2015.

(18)

Reflects the spread, if any, of (a) the aggregate market value of the shares of common stock purchasable upon exercise of the option rights which would have vested early due to Mr. Barneson's termination, determined based on a per share price of $83.66, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2015, over (b) the aggregate exercise price required to purchase such shares upon exercise of such option rights. All option rights that were held by Mr. Barneson on December 31, 2015 had previously vested. Accordingly, no spread is reflected in this table.

(19)

Under our Restoration Plan, Mr. Barneson is entitled to a distribution of his account balance six months following his termination, except that he will forfeit the entire amount of matching and fixed rate contributions made by us to his account if he is terminated for cause. In addition, under our Savings Plan, upon termination of employment, Mr. Barneson is eligible to receive a distribution of his vested balance under the plan; however, such balance is not reflected in this table.

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(1)

Reflects (a) annual retainer of $45,000, (b) any additional annual retainer for serving as Lead Independent Director or chair of a committee of the board of directors, and (c) fees for attendance of board or board committee meetings. Each non-employee director had the right to elect to receive shares of our common stock in lieu of any or all of his or her annual cash retainer, including retainers for serving as Lead Independent Director or a committee chair. In 2015: Mr. Hassey elected to receive 548 shares of common stock in lieu of $44,925 of his annual retainer; Ms. Martin elected to receive 548 shares of common stock in lieu of $44,925 of her annual retainer; Dr. Osborne elected to receive 731 shares of common stock in lieu of $59,927 of his annual retainer; and Mr. Wilcox elected to receive 609 shares of common stock in lieu of $49,926 of his annual retainer. In each case, the number of shares received was determined based on a per share price of $81.98, the average of the closing prices per share of our common stock as reported on the Nasdaq Global Select Market for the 20 trading days prior to the award date of the annual retainers.

(2)

Reflects the aggregate grant date fair value of restricted stock awards to non-employee directors determined in accordance with ASC Topic 718, without regard to potential forfeiture. On June 2, 2015, in accordance with our director compensation policy described below, each non-employee director received a grant of restricted stock having a value of $95,000; the average of the closing prices per share of our common stock as reported on the Nasdaq Global Select Market for the 20 trading days prior to the award date was $81.98, resulting in the issuance of 1,158 shares of restricted stock to each non-employee director. For additional information regarding the assumptions made in the valuation of restricted stock awards with respect to our 2015 fiscal year, see Note 8 of the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2015. As of December 31, 2015, each non-employee director held 1,158 shares of restricted stock. The restrictions on 100% of the shares of restricted stock granted to non-employee directors will lapse on June 2, 2016 or earlier if the director's services to our company terminate as a result of death or disability, or in the event of a change in control. The non-employee director will receive all dividends and other distributions paid with respect to the shares of restricted stock he or she holds, but if any of such dividends or distributions are paid in shares of our capital stock, such shares will be subject to the same restrictions on transferability as are the shares of restricted stock with respect to which they were paid.

(3)	Reflects dividends received on restricted stock.

(4)	Mr. Murdy served as a director from July 2006 until his retirement in June 2015.

•	an annual retainer of $45,000 per year;

•	an annual grant of restricted stock having a value equal to $95,000;

•	a fee of $1,500 per day for each meeting of our board of directors attended in person and $750 per day for each such meeting attended by phone; and

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•	a fee of $1,500 per day for each in-person committee meeting of the board of directors attended ($2,000 per day for each such audit committee meeting) and $750 per day for each telephonic committee meeting of our board of directors meeting attended ($1,000 per day for each such audit committee meeting).

(1)

Our 2006 Plan initially became effective on July 6, 2006. Thereafter, our board of directors amended and restated the 2006 Plan effective as of February 6, 2008, again effective as of June 2, 2009 and again effective as of March 1, 2010; these amendments were not material and did not affect the number of shares available for issuance under the 2006 Plan. Subsequently, the 2006 Plan was amended and restated by our board of directors and approved by our stockholders effective as of June 8, 2010; in this instance, the amendments increased the number of shares available for issuance under the 2006 Plan. Following June 8, 2010, our board of directors amended and restated the 2006 Plan effective as of February 8, 2012 and again effective as of April 10, 2013; these amendments were not material and did not affect the number of shares available for issuance under the 2006 Plan. The 2006 Plan is our only equity compensation plan. A copy of the 2006 Plan is attached as Exhibit 10.7 to our Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on April 24, 2013.

(2)

Reflects options to purchase 16,645 shares of common stock, restricted stock units covering 5,521 shares of our common stock and performance shares covering 454,982 shares of our common stock, in each case outstanding as of December 31, 2015, and does not include 156,553 shares of restricted stock that remained subject to forfeiture as of December 31, 2015 because such shares are already outstanding.

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(3)	Reflects the exercise price per share of our common stock purchasable upon exercise of options outstanding as of December 31, 2015. The exercise price is the same for all such options. No exercise price is payable in connection with the issuance of shares covered by the restricted stock units or performance shares outstanding as of December 31, 2015.

(4)

Subject to certain adjustments that may be required from time to time to prevent dilution or enlargement of the rights of participants, a maximum of 2,722,222 shares of our common stock may be issued under the 2006 Plan, taking into account all shares issued under the 2006 Plan. As of December 31, 2015, 1,535,712 shares of our common stock had been issued thereunder. Of such 1,535,712 shares, 156,553 were shares of restricted stock that remained subject to forfeiture as of such date. In the event of forfeiture, such shares again become available for issuance.

•	each named executive officer;

•	each of our current directors;

•	all our current directors and executive officers as a group; and

•	each person or entity known to us to beneficially own 5% or more of our common stock as determined in accordance with Rule 13d-3 under the Exchange Act.

(1)	Includes shares of our common stock that as of March 31, 2016 were issuable upon exercise of options within 60 days after March 31, 2016, as follows: Hockema (8,037 shares); Harvey (1,202 shares); Rinkenberger (803 shares); Donnan (2,083 shares); Barneson (2,334 shares); and all current directors and executive officers as a group (15,102 shares).

(2)	Includes shares of restricted stock and restricted stock units that remained subject to forfeiture as of March 31, 2016, as follows: Hockema (33,369 shares); Harvey (39,858 shares); Rinkenberger (14,551 shares); Donnan (12,654 shares); Barneson (9,033 shares); Bartholomew (1,158 shares); Foster (1,158 shares); Hassey (1,158 share); Hopp (1,158 shares);

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(3)	Includes 79,381 shares of our common stock held by the Hockema Family Trust.

(4)	Includes 3,500 shares of our common stock held by a Keough plan of which Dr. Osborne is the beneficiary, 200 shares of our common stock held by Dr. Osborne's son and 500 shares held by the Rahnasto/Osborne Revocable Trust U/A DTD 11/07/1999 of which Dr. Osborne is a co-beneficiary and a co-trustee.

(5)	Shares beneficially owned by BlackRock, Inc. are as reported on Amendment No. 6 to Schedule 13G filed by BlackRock, Inc. on January 26, 2016. BlackRock, Inc. has sole voting power with respect to 1,664,807 shares and sole dispositive power with respect to 1,685,118 shares. The principal address of BlackRock, Inc. is 55 East 52nd Street, New York, New York 10055.

(6)

Shares beneficially owned by Vanguard Group, Inc. are as reported on Amendment No. 3 to Schedule 13G filed by Vanguard Group, Inc. on February 10, 2016. Vanguard Group, Inc. has sole voting power with respect to 29,709 shares and shared voting power with respect to 1,300 shares. Vanguard Group, Inc. has sole dispositive power with respect to 1,463,486 shares and shared dispositive power with respect to 27,285 shares. The principal address of Vanguard Group, Inc. is 100 Vanguard Boulevard, Malvern, Pennsylvania 19355.

(7)

Shares beneficially owned by Dimensional Fund Advisors LP are as reported on Amendment No. 5 to Schedule 13G filed by the Dimensional Fund Advisors LP on February 9, 2016. Dimensional Fund Advisors LP has sole voting power with respect to 1,317,610 shares and sole dispositive power with respect to 1,352,094 shares. The principal address of Dimensional Fund Advisors, LP is Building One, 6300 Bee Caves Road, Austin, Texas, 78746.

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•	external data relating to the audit quality and performance, including recent Public Company Accounting Oversight Board reports on Deloitte & Touche LLP and its member firms;

•	Deloitte & Touche LLP's tenure as our independent registered public accounting firm and its familiarity with our operations and businesses, accounting policies and practices and internal control over financial reporting;

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(1)	Audit fees consist principally of fees for the audit of our annual financial statements included in our Annual Report on Form 10-K for those years and review of our financial statements included in our Quarterly Reports on Form 10-Q for those years, and for audit services provided in connection with compliance with the requirements of the Sarbanes-Oxley Act.

(2)	Audit-related fees consist principally of fees for statutory audits.

(3)	Tax fees for 2014 consist principally of fees for tax advisory services and the preparation of tax returns for certain of our subsidiaries. Tax fees for 2015 consist principally of fees for tax advisory services related to compliance and payroll and income taxes related to equity grants to French employees and the preparation of tax returns for certain of our subsidiaries.

(4)

All other fees for 2014 consist of the subscription fee to the Deloitte & Touche LLP Research Tool Library, fees relating to the review of agreed-upon procedures relating to certain environmental matters and fees relating to the review of comments from the Securities and Exchange Commission and our response to such comments. All other fees for 2015 consist of the subscription fee to the Deloitte & Touche LLP Research Tool Library, fees relating to the review of agreed-upon procedures relating to certain environmental matters and fees relating to the reviews and discussions in regard to the termination of defined benefit plan accounting for the Union VEBA Trust.

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(i)	Profits (e.g., operating income, EBIT, EBT, net income (before or after taxes), earnings per share, residual or economic earnings, economic profit - these profitability metrics could be measured before certain specified special items and/or subject to GAAP definition);

(ii)	Cash Flow (e.g., EBITDA, free cash flow, free cash flow with or without specific capital expenditure target or range, including or excluding divestments and/or acquisitions, total cash flow, cash flow in excess of cost of capital or residual cash flow or cash flow return on investment);

(iii)	Returns (e.g., profits or cash flow returns on: assets, invested capital, net capital employed, revenue, sales and equity);

(iv)	Working Capital (e.g., working capital divided by sales, days’ sales outstanding, days’ sales inventory, and days’ sales in payables);

(v)	Profit Margins (e.g., profits divided by revenues, gross margins and material margins divided by revenues, and material margin divided by sales pounds);

(vi)	Liquidity Measures (e.g., debt-to-capital, debt-to-EBITDA, total debt ratio);

(vii)

Revenues, Sales, Operating, Cost, and Stock Price Metrics (e.g., revenues, sales, revenue or sales growth, revenue or sales growth outside the United States, gross margin, gross margin growth, material margin, material margin growth, operating margin, operating margin growth, sales and administrative costs divided by sales or profits, operating or manufacturing costs, operating or manufacturing costs relative to prior periods or business plan, stock price appreciation and total return to shareholders;

(viii)	Safety Performance (e.g., total case incident rate);

(ix)	Quality Performance (e.g., no fault claim rate);

(x)	Delivery Performance (e.g., on-time delivery rate); and

(xi)

Strategic Initiative Key Deliverable Metrics consisting of one or more of the following: product development, strategic partnering, research and development, vitality index, market penetration, geographic business expansion goals, customer satisfaction, employee satisfaction, management of employment practices and employee benefits, supervision of litigation and information technology, and goals relating to acquisitions or divestitures of subsidiaries, affiliates and joint ventures.

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(i)

Subject to adjustment as provided in Section 11 of this Plan and the share counting rules set forth in Section 3(b) of this Plan, the number of Common Shares available under the Plan for awards of (A)  Option Rights or Appreciation Rights, (B)  Restricted Stock, (C)  Restricted Stock Units, (D)  Performance Shares or Performance Units, (E) awards contemplated by Section 9 of this Plan, or (F)  dividend equivalents paid with respect to awards made under the Plan will not exceed in the aggregate 1,045,000 shares minus, as of the Effective Date, one Common Share for every one Common Share subject to an award granted under the Predecessor Plan between December 31, 2015 and the Effective Date. Such shares may be shares of original issuance or treasury shares or a combination of the foregoing.

(ii)	The aggregate number of Common Shares available for issuance or transfer under Section 3(a)(i) of this Plan will be reduced by one Common Share for every one Common Share subject to an award granted under this Plan.

(i)	If any award granted under this Plan is cancelled or forfeited, expires or is settled for cash (in whole or in part), the Common Shares subject to such award will, to the extent of such cancellation, forfeiture, expiration, or cash settlement, again be available under Section 3(a)(i) above.

(ii)	If, after December 31, 2015, any Common Shares subject to an award granted under the Predecessor Plan are forfeited, or an award granted under the Predecessor Plan is cancelled

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(iii)

Notwithstanding anything to the contrary contained herein: (A) Common Shares withheld by the Company, tendered or otherwise used in payment of the Option Price of an Option Right will not be added back to the aggregate number of Common Shares available under Section 3(a)(i) above; (B) Common Shares withheld by the Company or otherwise used to satisfy a tax withholding obligation will not be added (or added back, as applicable) to the aggregate number of Common Shares available under Section 3(a)(i) above; (C) Common Shares subject to an Appreciation Right that are not actually issued in connection with its Common Shares settlement on exercise thereof will not be added back to the aggregate number of Common Shares available under Section 3(a)(i) above; and (D) Common Shares reacquired by the Company on the open market or otherwise using cash proceeds from the exercise of Option Rights will not be added back to the aggregate number of Common Shares available under Section 3(a)(i) above.

(i)	No Participant will be granted Option Rights and/or Appreciation Rights, in the aggregate, for more than 250,000 Common Shares during any calendar year.

(ii)	No Participant will be granted Qualified Performance-Based Awards of Restricted Stock, Restricted Stock Units, Performance Shares and/or other awards under Section 9 of this Plan, in the aggregate, for more than 250,000 Common Shares during any calendar year.

(iii)	In no event will any Participant in any calendar year receive Qualified Performance-Based Awards of Performance Units and/or other awards payable in cash under Section 9 of this Plan having an aggregate maximum value as of their respective Dates of Grant in excess of $5,000,000.

(iv)	In no event will any Participant in any calendar year receive Qualified Performance-Based Awards that are Cash Incentive Awards having an aggregate maximum value in excess of $5,000,000.

(v)	No non-employee Director will be granted, in any period of one calendar year, awards under the Plan having an aggregate maximum value in excess of $500,000.

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(i)	Each grant may specify that the amount payable on exercise of an Appreciation Right will be paid by the Company in cash, Common Shares or any combination thereof.

(ii)	Any grant may specify that the amount payable on exercise of an Appreciation Right may not exceed a maximum specified by the Committee at the Date of Grant.

(iii)	Any grant may specify waiting periods before exercise and permissible exercise dates or periods.

(iv)

Each grant may specify the period or periods of continuous service by the Participant with the Company or any Subsidiary that is necessary before the Appreciation Rights or installments thereof will become exercisable; provided, that, except as otherwise described in this subsection, no grant of Appreciation Rights may become exercisable sooner than after one year. A grant of Appreciation Rights may provide for the earlier exercise of such Appreciation Rights, including in the event of the retirement, death or disability of a Participant.

(v)	Any grant of Appreciation Rights may specify Management Objectives that must be achieved as a condition of the exercise of such Appreciation Rights.

(vi)	Each grant of Appreciation Rights will be evidenced by an Evidence of Award, which Evidence of Award will describe such Appreciation Rights, identify the related Option Rights (if applicable), and contain such other terms and provisions, consistent with this Plan, as the Committee may approve.

(i)	Each grant will specify in respect of each Free-Standing Appreciation Right a Base Price, which (except with respect to awards under Section 22 of this Plan) may not be less than the Market Value per Share on the Date of Grant;

(ii)	Successive grants may be made to the same Participant regardless of whether any Free-Standing Appreciation Rights previously granted to the Participant remain unexercised; and

(iii)	No Free-Standing Appreciation Right granted under this Plan may be exercised more than 10 years from the Date of Grant.

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(ii)	a majority of the Directors are not Incumbent Directors;

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1.	Introduction.

2.	Definitions.

(a)	Restricted Stock Units.

(b)	Grant Date.

(c)	Vesting Date.

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(d)	Closed Period.

(e)	Disability.

3.	Entitlement to Participate.

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4.	Conditions of the Restricted Stock Units.

(a)	Grant of Restricted Stock Units.

(b)	Vesting of Restricted Stock Units.

(c)	Holding of Common Shares.

(d)	French Participant’s Account.

(e)	Cash Dividends.

5.	Non-transferability of Restricted Stock Units.

6.	Adjustments and Change of Control.

7.	Death.

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8.	Disability.

9.	Disqualification of French-qualified Restricted Stock Units.

10.	Interpretation.

11.	Employment Rights.

12.	Amendments.

13.	Effective Date.

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•	10 days after a public announcement by Kaiser Aluminum Corporation that a person or group has become an acquiring person; and

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•	10 business days (or a later date determined by our Board) after a person or group begins a tender or exchange offer that, if completed, would result in that person or group becoming an acquiring person.

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