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

þ	No fee required

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

(1)	Title of each class of securities to which transaction applies:

(2)	Aggregate number of securities to which transaction applies:

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(5)	Total fee paid:

o	Fee paid previously with preliminary materials:

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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(2)	Form, Schedule or Registration Statement No.:

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(1)	To elect three members to our board of directors for three-year terms to expire at our 2018 annual meeting of stockholders;

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

(3)	To approve the Kaiser Aluminum Corporation Amended and Restated 2006 Equity and Performance Incentive Plan for purposes of Section 162(m) of the Internal Revenue Code;

(4)	To amend our amended and restated certificate of incorporation to implement a majority voting standard in uncontested director elections;

(5)	To ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2015; and

(6)	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 May [ ], 2015 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 Tuesday, June 2, 2015, 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 10, 2015 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 2018 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 Amended and Restated 2006 Equity and Performance Incentive Plan, which we refer to as the Equity Incentive Plan and a copy of which is attached as Appendix A to this Proxy Statement, for purposes of Section 162(m) of the Internal Revenue Code;

•	The amendment of our amended and restated certificate of incorporation to implement a majority voting standard in uncontested director elections.

•	The ratification of the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2015; 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 for 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 Amended and Restated Equity and Performance Incentive Plan for purposes of Section 162(m) of the Internal Revenue Code;

•	"FOR" the amendment of our amended and restated certificate of incorporation to implement a majority voting standard in uncontested director elections; and

•	“FOR” the ratification of the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2015.

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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 Monday June 1, 2015.

•	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 Monday, June 1, 2015.

•	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 10, 2015, the record date, 17,220,496 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 2015.

Q:	What are the voting requirements for the proposals?

A:	There are different voting requirements for the proposals.

•	Directors will be elected by a plurality vote of all votes cast for the election of directors at the Annual Meeting. Accordingly, the three nominees receiving the highest number of votes will be elected. If you withhold authority to vote for any particular director nominee, your shares will not be counted in the vote for that nominee and will have no effect on the outcome of the vote.

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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 Kaiser Aluminum Corporation Amended and Restated 2006 Equity and Performance Incentive Plan for purposes of Section 162(m) of the Internal Revenue Code, and (3) to ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2015. If you abstain from voting on the proposal to approve the compensation of our named executive officers as disclosed in this Proxy Statement, the proposal to approve the Kaiser Aluminum Corporation Amended and Restated 2006 Equity and Performance Incentive Plan for purposes of Section 162(m) of the Internal Revenue Code, and/or the proposal to ratify the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2015, your shares will not be counted in the vote for such proposal(s) and will have no effect on the outcome of the vote.

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•

The affirmative vote of the holders of at least 67% 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 majority voting standard in uncontested director elections. 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 2015. 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 Kaiser Aluminum Corporation Amended and Restated 2006 Equity and Performance Incentive Plan is not approved by the stockholders for purposes of Section 162(m) of the Internal Revenue Code?

A:

If the Equity Incentive Plan is approved by our stockholders for purposes of Section 162(m) of the Internal Revenue Code, we would continue to have the flexibility to grant awards that qualify for the performance-based exclusion from the deduction limitations under Section 162(m). Section 162(m) generally limits the deductibility of compensation in excess of $1 million paid to our principal executive officer and our next three highest-paid executive officers, other than the principal financial officer, unless certain criteria are satisfied. If the Equity Incentive Plan is not approved by our stockholders, we will cease to have the flexibility to grant awards that qualify for the performance-based exclusion from the deduction limitations under Section 162(m).

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 majority voting standard in uncontested director elections is not approved by stockholders at the Annual Meeting, the amendment will not become effective, the voting standard in uncontested director elections will remain a plurality standard and our amended and restated certificate of incorporation, bylaws and corporate governance guidelines will not be amended as described in this Proxy Statement.

Q:	What will happen if the selection of Deloitte & Touche LLP as our independent registered public accounting firm for 2015 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:

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•	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 $4,500, 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 actual manufacturing costs compared to historical manufacturing costs and (e) individual performance based on individual, facility, and/or functional performance; and

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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 executive officers consisting of (1) restricted stock with three-year cliff vesting and (2) performance shares that vest, if at all, based on our total shareholder return, or TSR, compared to our peers in the S&P SmallCap 600 Materials Index.

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•	by transfer to us of shares of common stock, having a value at the time of exercise equal to the total option price, that are owned by the participant for at least six months;

•	by a combination of such methods of payment; or

•	by such other methods as may be approved by the compensation committee.

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(a)	Earnings per share;

(b)	Net income (before or after taxes);

(c)	Cash flow;

(d)	Return measures (including, but not limited to, return on assets, revenue, equity or sales);

(e)	Cash flow return on investments;

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(f)	Earnings before or after taxes, interest, depreciation and amortization;

(g)	Growth in sales or revenues;

(h)	Share price (including, but not limited to, growth measures and total shareholder return);

(i)	Operating measures (including, but not limited to, operating margin and operating costs); and

(j)	Any of the above criteria as compared to the performance of a published or a special index deemed applicable by the compensation committee, including, but not limited to, the S&P’s 500 Stock Index.

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•	forfeit any award under the Equity Incentive Plan held by the participant,

•	return to us (in exchange for our payment to the participant of any cash amount that the participant paid to us for such an award) all shares of our common stock acquired under the Equity Incentive Plan that the participant has not disposed of, and

•	with respect to any shares acquired under the Equity Incentive Plan that the participant has disposed of, pay to us the difference between the market value of those shares on the date they were acquired and any amount that the participant paid for such shares.

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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 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;

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All of our incentive programs contain clawback provisions, described in more detail in the “Proposal Requiring Your Vote - Proposal for approval of the Kaiser Aluminum Corporation Amended and Restated 2006 Equity and Performance Incentive Plan for Purposes of Section 162(m) of the Internal Revenue Code” above, 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 Equity Incentive 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;

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

•	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;

•

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;

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•	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 person or persons) pursuant to which the submission of the recommendation is to be made by such stockholder or group of stockholders;

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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 Securities Exchange Act, the rules of the SEC 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;

•	operating income of $138 million;

•	record heat treat plate, automotive extrusions and total shipments;

•	record manufacturing efficiency facilitated by completed capital investments; and

•	approximately $70 million returned to shareholders through quarterly dividends and share repurchases.

•	objectives for our compensation programs;

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•	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 (2014 through 2016).

•	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 45% 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:

•	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 67% of the target total compensation for our other named executive officers being at-risk compensation payable only if certain corporate performance levels are achieved;

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•	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

•	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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•	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, 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 the employment of an named executive officer, other than Mr. Hockema,

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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 2014 - 2016 LTI Program at each performance level:

•	the threshold number of performance shares reflects that no performance shares will vest in 2017 under our 2014-2016 LTI Program unless our company's performance exceeds the threshold performance required over the 2014 through 2016 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 $68.80 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 Internal Revenue 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 2016;

•	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 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 2014 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 - 2000WC mortality table projected 23 years with Scale AA as of December 31, 2013 and the RP-2014 White Collar Healthy Annuitant mortality table projected with Scale MP-2014 as of December 31, 2014 and (b) applying a discount rate of 3.40%, 3.40% and 3.60% per annum for 2012, 2013 and 2014, respectively, to determine the actuarial present value of the accumulated benefit at December 31 of the preceding year and a discount rate of 3.75%, 3.40% and 3.40% 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 Internal Revenue 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 “Executive Compensation - All Other Compensation” below for information regarding each such component.

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

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

•	For 2012 Mr. Hockema, 17.2%; Mr. Rinkenberger, 21.7%; Mr. Donnan, 20.5%; and Mr. Harvey, 22.7%.

(1)	Represents reimbursement of relocation costs incurred by Mr. Donnan in connection with his relocation from Texas to California, where our corporate office is located.

(2)	Represents reimbursement of 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 2014 STI Plan for our named executive officers. No awards are payable when performance does not reach the threshold performance level. Under our 2014 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 2014 STI Plan in March 2015.

(2)

Reflects the number of performance shares that will become vested for each of the named executive officers under our 2014 - 2016 LTI Program in 2017 at the threshold, target and maximum performance levels. No performance shares will vest under the 2014 - 2016 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, 2017 and the date on which the compensation committee certifies the performance level achieved. 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 December 31, 2016, 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 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, 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 upon the vesting date will be determined based on the performance level achieved during the 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 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 Mr. Hockema's employment during the performance period.

(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, 2014. The restrictions on 100% of the shares of restricted stock granted 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 the employment of an named executive officer, other than Mr. Hockema, terminates before March 5, 2017 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 shares will lapse on March 5, 2017. If Mr. Hockema's employment terminates before March 5, 2017 as a result of his retirement , 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 Mr. Hockema's employment during the restriction period, will lapse on March 5, 2017. 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.

(5)

Reflects the number of shares of restricted stock received by Mr. Harvey on June 4, 2014. The restrictions on 100% of the shares of restricted stock granted will lapse on March 5, 2019 or earlier if Mr. Harvey's employment terminates as a result of death or disability, Mr. Harvey's employment is terminated by us without cause or in the event of a change in control. If Mr. Harvey's employment terminates before March 5, 2019 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 shares will lapse on March 5, 2019. Mr. Harvey 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.

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•	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.

•	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 Rinkenberger, Donnan and Harvey) 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 Internal Revenue 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 Internal Revenue 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 Internal Revenue Code of 1986.

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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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Stock Market on December 31, 2014.

(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, 2012; for Mr. Hockema, reflects the number of shares of restricted stock received by him effective March 5, 2012 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, 2015.

(4)

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 will lapse on March 5, 2016 or earlier upon an accelerated vesting event. If, prior to March 5, 2016, the named executive officer's employment 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 shares will lapse on March 5, 2016.

(5)	Reflects the number of shares of restricted stock received by the named executive officer pursuant to awards granted effective March 5, 2014. See Note 4 to the table set forth under "Executive Compensation - Grants of Plan-Based Awards

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(6)

Reflects the target number of performance shares received by the named executive officer pursuant to awards granted effective March 5, 2012. Such target number is approximately one-half of the performance shares received by the named executive officer pursuant to awards granted effective March 5, 2012. The number of performance shares earned based on the level of performance achieved during the three-year performance period vested on March 5, 2015. 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, 50% 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, 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, 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, 2016 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, an accelerated vesting event occurs with respect to the named executive officer, the target number of performance shares will vest. If an accelerated vesting event occurs with respect to a named executive officer, on or after December 31, 2016 and prior to the vesting date, the performance shares 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, except that the performance shares will be forfeited if the executive officer's employment is terminated by us for cause or is voluntarily terminated by him without good reason prior to age 65. If, prior to the vesting date, the employment of the 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 on the vesting date will be determined based on the performance level achieved during the applicable three-year 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, 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. See Note 2 to the table set forth under "Executive Compensation - Grants of Plan-Based Awards in 2014" above for more information on the performance shares granted to the named executive officers effective March 5, 2014.

(9)

Reflects the number of shares of restricted stock received by Mr. Harvey pursuant to an award granted effective June 4, 2014, in connection with his appointment as Executive Vice President - Fabricated Products and assumption of increased responsibilities. The restrictions on all such shares will lapse on June 4, 2019. See Note 5 to the table set forth under "Executive Compensation - Grants of Plan-Based Awards in 2014" for more information on the shares of restricted stock granted to Mr. Harvey effective June 4, 2014.

(1)	Reflects the aggregate market value of (i) restricted shares that vested on March 5, 2014, determined based on a per share price of $71.88, the closing price per share of our common stock as reported on the Nasdaq Stock Market on the vesting date of such shares of restricted stock, and (ii) shares of common stock that were received upon the vesting on March 5,

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(1)	Determined (a) assuming mortality according to the RP-2014 White Collar Healthy Annuitant mortality table projected with Scale MP-2014 and (b) applying a discount rate of 3.60% per annum.

(1)	In each case, 100% of such amount is included in the amounts for 2014 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 2014 STI Plan, Mr. Hockema's target award for 2014 was $586,000, but his award could have ranged from a threshold of $293,000 to a maximum of $1,758,000, or could have been zero if the threshold performance was not achieved. Mr. Hockema's award under our 2014 STI Plan was determined in March 2015 to be $689,722. 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 2014 but prior to December 31, 2014, Mr. Hockema's award for 2014 under our 2014 STI Plan would have been determined based on actual performance and prorated for the actual number of days of Mr. Hockema's employment in 2014, provided that Mr. Hockema would have received no award for 2014 under our 2014 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, 2014, the last day of our 2014 fiscal year, Mr. Hockema would have been entitled to full payment of his award under the 2014 STI Plan unless his employment had been terminated by us for cause.

(4)	Assumes that Mr. Hockema used all of his 2014 vacation and that he had five weeks of accrued vacation for 2015.

(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, 2014 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, 2014 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 with MP-2014 Generational Mortality Projection, and (d) applying a discount rate of 3.60% per annum.

(9)

Reflects the actuarial present value of Mr. Hockema's disability benefits at December 31, 2014 determined (a) assuming full disability at December 31, 2014, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees with MP-2014 Generational Mortality Projection, and (c) applying a discount rate of 3.60% 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, 2014 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-2014 White Collar Healthy Annuitant Mortality Table with MP-2014 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.60% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Hockema's death had occurred on December 31, 2014 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, 2014 by us without cause or by him for good reason following a change in control on such date, no payments 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, no such payments would have been reduced.

(13)

If, on December 31, 2014, 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, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to him effective March 5, 2014 would have remained, 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 29,185, the number of shares of restricted stock held by Mr. Hockema, (ii) 17,174, the actual number of shares of common stock received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 26,898 and 24,401, the target number of shares of common stock that could be received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

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(14)

If, on December 31, 2014, 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, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to Mr. Hockema effective March 5, 2014 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 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 29,185, the number of shares of restricted stock held by Mr. Hockema, (ii) 17,174, the actual number of shares of common stock received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, (iii) 26,898, the target 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, 2013, and (iv) 31,721, 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 based on the performance level achieved during the performance period through the date of the change in control.

(15)

If Mr. Hockema had retired on December 31, 2014, then the shares of restricted stock and performance shares that were held by Mr. Hockema on December 31, 2014 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 shares of common stock to be received in respect of performance shares granted to Mr. Hockema effective March 5, 2014 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 10,243 and 7,449, the number of shares of restricted stock held by Mr. Hockema that were granted to him effective March 5, 2012 and March 5, 2013, respectively, (ii) 3,156, the number of shares of restricted stock held by Mr. Hockema that were granted to him effective March 5, 2014, prorated based on the number of days Mr. Hockema was employed by our company during the applicable restriction period, (iii) 17,174, the actual number of shares of common stock received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, (iv) 26,898, the target number of shares of common stock that could be received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2013, and (v) 8,133, the target number of shares of common stock that could be received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2014, prorated based on the number of days Mr Hockema was employed during the applicable performance period.

(16)

If, on December 31, 2014, 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, 2012 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, 2013 and March 5, 2014 would have vested; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 29,185, the number of shares of restricted stock held by Mr. Hockema, (ii) 17,174, the actual number of shares of common stock received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 26,898 and 24,401, the target number of shares of common stock that could be received by Mr. Hockema in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(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 $71.43, the closing price per share of common stock as reported on the Nasdaq Global Select Market on December 31, 2014, over (b) the aggregate exercise price required to purchase such shares upon exercise of such option rights. All

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(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. 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 referred to as the continuation period, determined based on his number of years of full employment as of December 31, 2014, 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, 2014, 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 2014 STI Plan, Mr. Rinkenberger's target award for 2014 was $281,100, but his award could have ranged from a threshold of $140,550 to a maximum of $843,300, or could have been zero if the threshold performance was not achieved. Mr. Rinkenberger's award under our 2014 STI Plan was determined in March 2015 to be $330,855. If Mr. Rinkenberger's employment had terminated on December 31, 2014, Mr. Rinkenberger would have been entitled to full payment of his award under the 2014 STI Plan unless his employment had been terminated by us for cause or voluntarily terminated by him. Under the 2014 STI Plan, Mr. Rinkenberger would have been entitled to a prorated award under the 2014 STI Plan if his employment had been terminated during 2014 but prior to December 31, 2014 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 2014 other than on December 31, 2014, Mr. Rinkenberger's target award for 2014 under our 2014 STI Plan would have been prorated for the actual number of days of Mr. Rinkenberger's employment in 2014 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 2014 vacation and that he had five weeks of accrued vacation for 2015.

(7)

This table reflects the present value of Mr. Rinkenberger's medical and dental benefits at December 31, 2014 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 2015 and assuming a 10% increase in the cost of medical and dental coverage for 2016 as compared to 2015.

(8)

This table reflects the present value of Mr. Rinkenberger's disability benefits at December 31, 2014 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 with MP-2014 Generational Mortality Projection, and (e) applying a discount rate of 3.60% per annum.

(9)

Reflects the actuarial present value of Mr. Rinkenberger's disability benefits at December 31, 2014 determined (a) assuming full disability at December 31, 2014, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees with MP-2014 Generational Mortality Projection, and (c) applying a discount rate of 3.60% 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, 2014 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-2014 White Collar Healthy Annuitant Mortality Table with MP-2014 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.60% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Rinkenberger's death had occurred on December 31, 2014 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 such two-year period. Such amount has been estimated by multiplying the cost of Mr. Rinkenberger's vehicle allowance for 2014 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, 2014 by us without cause or by him for good reason following a change in control on such date.

(14)

If, on December 31, 2014, Mr. Rinkenberger'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. Rinkenberger would have lapsed, (b) the performance shares granted to him effective March 5, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to him effective March 5, 2014 would have remained, 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 three-year performance period; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to (i) 17,244, the number of restricted stock that were held by Mr. Rinkenberger, (ii) 4,090, the actual number of shares of common stock received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 6,406 and 5,985, the target number of shares of common stock that could

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(15)

If, on December 31, 2014, 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, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to Mr. Rinkenberger effective March 5, 2014 would have immediately vested, 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 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 17,244, the number of shares of restricted stock that were held by Mr. Rinkenberger, (ii) 4,090, the actual number of shares of common stock received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, (iii) 6,406, the target number of shares of common stock that could be received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2013, and (iv) 7,780 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 based on the performance level achieved during the performance period through the date of the change in control.

(16)

If Mr. Rinkenberger had qualified for retirement on December 31, 2014 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; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 17,224, the number of shares of restricted stock that were held by Mr. Rinkenberger, (ii) 4,090, the actual number of shares of common stock received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 6,406 and 5,985, the target number of shares of common stock that could be received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(17)

If, on December 31, 2014, 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, 2012 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, 2013 and March 5, 2014 would have vested; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to (i) 17,224, the number of shares of restricted stock that were held by Mr. Rinkenberger, (ii) 4,090, the actual number of shares of common stock received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 6,406 and 5,985, the target number of shares of common stock that could be received by Mr. Rinkenberger in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, 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, 2014 had previously vested. Accordingly, no spread is reflected in this table. In any event, the $80.01 per share exercise price of such option rights exceeded the $71.43 closing price per share of our common stock as reported on the Nasdaq Stock Market on December 31, 2014.

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(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. Rinkenberger 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. 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, which we refer to as the continuation period, determined based on his number of years of full employment as of December 31, 2014, 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, 2014, 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 2014 STI Plan, Mr. Donnan's target award for 2014 was $265,200, but his award could have ranged from a threshold of $132,600 to a maximum of $795,600, or could have been zero if the threshold performance was not achieved. Mr. Donnan's award under our 2014 STI Plan was determined in March 2015 to be $312,140. If Mr. Donnan's employment had terminated on December 31, 2014, Mr. Donnan would have been entitled to full payment of his award under the 2014 STI Plan unless his employment had been terminated by us for cause or voluntarily terminated by him. Under the 2014 STI Plan, Mr. Donnan would have been entitled to a prorated award under the 2014 STI Plan if his employment had been terminated during 2014 but prior to December 31, 2014 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 2014 other than on December 31, 2014, Mr. Donnan's target award for 2014 under our 2014 STI Plan would have been prorated for the actual number of days of Mr. Donnan's employment in 2014 and Mr. Donnan would have been entitled to payment of such amount.

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(6)	Assumes that Mr. Donnan used all of his 2014 vacation and that he had five weeks of accrued vacation for 2015.

(7)

This table reflects the present value of Mr. Donnan's medical and dental benefits at December 31, 2014 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 2015 and assuming a 10% increase in the cost of medical and dental coverage for 2016 as compared to 2015.

(8)

This table reflects the present value of Mr. Donnan's disability benefits at December 31, 2014 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 with MP-2014 Generational Mortality Projection, and (d) applying a discount rate of 3.60% per annum.

(9)

Reflects the actuarial present value of Mr. Donnan's disability benefits at December 31, 2014 determined (a) assuming full disability at December 31, 2014, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees with MP-2014 Generational Mortality Projection, and (c) applying a discount rate of 3.60% 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, 2014 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-2014 White Collar Healthy Annuitant Mortality Table with MP-2014 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.60% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Donnan's death had occurred on December 31, 2014 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 2014 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, 2014 by us without cause or by him for good reason following a change in control on such date.

(14)

If, on December 31, 2014, 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 held by Mr. Donnan would have lapsed, (b) the performance shares granted to him effective March 5, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to him effective March 5, 2014 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to (i) 14,977, the number of shares of restricted stock that were held by Mr. Donnan,(ii) 3,557, the actual number of shares of common stock received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 5,569 and 5,205, the target number of shares of common stock that could

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(15)

If, on December 31, 2014, 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, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to Mr. Donnan effective March 5, 2014 would have immediately vested, 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 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 14,977, the number of shares of restricted stock that were held by Mr. Donnan,(ii) 3,557, the actual number of shares of common stock received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, (iii) the target number of shares of common stock that could be received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2013, and (iv) 6,766, 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 5, 2014 based on the performance level achieved during the performance period through the date of the change in control.

(16)

If Mr. Donnan had qualified for retirement on December 31, 2014 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; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 14,977, the number of shares of restricted stock that were held by Mr. Donnan, (ii) 3,557, the actual number of shares of common stock received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 5,569 and 5,205, the target number of shares of common stock that could be received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(17)

If, on December 31, 2014, 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, 2012 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, 2013 and March 5, 2014 would have vested; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to (i) 14,977, the number of shares of restricted stock that were held by Mr. Donnan,(ii) 2,356, the actual number of shares of common stock received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 5,569 and 5,205, the target number of shares of common stock that could be received by Mr. Donnan in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, 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, 2014 had previously vested. Accordingly, no spread is reflected in this table. In any event, the $80.01 per share exercise price of such option rights exceeded the $71.43 closing price per share of our common stock as reported on the Nasdaq Stock Market on December 31, 2014.

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(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 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 (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, 2014, 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, 2014, 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 2014 STI Plan, Mr. Harvey's target award for 2014 was $260,000, but his award could have ranged from a threshold of $130,000 to a maximum of $780,000, or could have been zero if the threshold performance was not achieved. Mr. Harvey's award under our 2014 STI Plan was determined in March 2015 to be $306,020. If Mr. Harvey's employment had terminated on December 31, 2014, Mr. Harvey would have been entitled to full payment of his award under the 2014 STI Plan unless his employment had been terminated by us for cause or voluntarily terminated by him. Under the 2014 STI Plan, Mr. Harvey would have been entitled to a prorated award under the 2014 STI Plan if his employment had been terminated during 2014 but prior to December 31, 2014 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 2014 other than on December 31, 2014, Mr. Harvey's target award for 2014 under our 2014 STI Plan would have been prorated for the

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(6)	Assumes that Mr. Harvey used all of his 2014 vacation and that he had five weeks of accrued vacation for 2015.

(7)

This table reflects the present value of Mr. Harvey's medical and dental benefits at December 31, 2014 determined (a) assuming family coverage in a consumer-driven health plan and a premium dental plan throughout Mr. Harvey's applicable benefit continuation period and (b) based on current COBRA coverage rates for 2015 and assuming a 10% increase in the cost of medical and dental coverage for 2016 as compared to 2015.

(8)

This table reflects the present value of Mr. Harvey's disability benefits at December 31, 2014 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 with MP-2014 Generational Mortality Projection, and (d) applying a discount rate of 3.60% per annum.

(9)

Reflects the actuarial present value of Mr. Harvey's disability benefits at December 31, 2014 determined (a) assuming full disability at December 31, 2014, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees with MP-2014 Generational Mortality Projection, and (c) applying a discount rate of 3.60% 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, 2014 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-2014 White Collar Healthy Annuitant Mortality Table with MP-2014 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.60% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Harvey's death had occurred on December 31, 2014 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 the required two-year period. Such amount has been estimated by multiplying the cost of Mr. Harvey's vehicle allowance and club membership dues for 2014 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, 2014 by us without cause or by him for good reason following a change in control on such date.

(14)

If, on December 31, 2014, 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, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to him effective March 5, 2014 would have remained outstanding, with the number of shares of common stock, if any, to be received by Mr. Harvey 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to (i) 39,325, the number of shares of restricted stock that were held by Mr. Harvey, (ii) 3,379, the actual number of

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(15)

If, on December 31, 2014, 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, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to Mr. Harvey effective March 5, 2014 would have immediately vested, with the number of common stock, if any, to be received by Mr. Harvey in respect to such performance shares to be determined based on the performance level achieved during the 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 39,325, the number of shares of restricted stock held by Mr. Harvey on December 31, 2014,(ii) 3,379, the actual number of shares of common stock received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, (iii) 5,299, the target 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, 2013, and (iv) 6,568 the number of shares of common stock that could be received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2014 based on the performance level achieved during the performance period through the date of the change in control.

(16)

If Mr. Harvey had qualified for retirement on December 31, 2014 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; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 39,325, the number of shares of restricted stock that were held by Mr. Harvey, (ii) 3,379, the actual number of shares of common stock received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 5,299 and 5,052, the target number of shares of common stock that could be received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(17)

If, on December 31, 2014, 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, 2012 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, 2013 and March 5, 2014 would have vested; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to (i) 39,325, the number of shares of restricted stock that were held by Mr. Harvey, (ii) 3,379, the actual number of shares of common stock received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) the target number of shares of common stock that could be received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, 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, 2014 had previously vested. Accordingly, no spread is reflected in this table. In any event, the $80.01 per share exercise price of such option rights exceeded the $71.43 closing price per share of our common stock as reported on the Nasdaq Stock Market on December 31, 2014.

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(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. 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, 2014, 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, 2014, 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 2014 STI Plan, Mr. Barneson's target award for 2014 was $159,100, but his award could have ranged from a threshold of $79,550 to a maximum of $477,300, or could have been zero if the threshold performance was not achieved. Mr. Barneson's award under our 2014 STI Plan was determined in March 2015 to be $187,261. If Mr. Barneson's employment had terminated on December 31, 2014, Mr. Barneson would have been entitled to full payment of his award under the 2014 STI Plan unless his employment had been terminated by us for cause or voluntarily terminated by him. Under the 2014 STI Plan, Mr. Barneson would have been entitled to a prorated award under the 2014 STI Plan if his employment had been terminated during 2014 but prior to December 31, 2014 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 2014 other than on December 31, 2014, Mr. Barneson's target award for 2014 under our 2014 STI Plan would have been prorated for the actual number of days of Mr. Barneson's employment in 2014 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 2014 vacation and that he had five weeks of accrued vacation for 2015.

(7)

This table reflects the present value of Mr. Barneson's medical and dental benefits at December 31, 2014 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 2015 and assuming a 10% increase in the cost of medical and dental coverage for 2016 as compared to 2015.

(8)

This table reflects the present value of Mr. Barneson's disability benefits at December 31, 2014 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 with MP-2014 Generational Mortality Projection, and (d) applying a discount rate of 3.60% per annum.

(9)

Reflects the actuarial present value of Mr. Barneson's disability benefits at December 31, 2014 determined (a) assuming full disability at December 31, 2014, (b) assuming mortality according to the RP-2014 Mortality Table for Disabled Retirees with MP-2014 Generational Mortality Projection, and (c) applying a discount rate of 3.60% 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, 2014 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-2014 White Collar Healthy Annuitant Mortality Table with MP-2014 Generational Mortality Improvement Projection, and (e) applying a discount rate of 3.60% per annum.

(11)

Reflects the life insurance benefit payable assuming Mr. Barneson's death had occurred on December 31, 2014 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 2014 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, 2014 by us without cause or by him for good reason following a change in control on such date.

(14)

If, on December 31, 2014, 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, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested; and (d) the performance shares granted to him effective March 5, 2014 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to (i) 12,280, the number of shares of restricted stock that were held by Mr. Barneson, (ii) 2,916, the actual number of shares of common stock received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 4,567 and 4,268, the target number of shares of common stock that could

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(15)

If, on December 31, 2014, 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, 2012 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, (c) the target number of performance shares granted to him effective March 5, 2013 would have vested, and (d) the performance shares granted to Mr. Barneson effective March 5, 2014 would have immediately vested, 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 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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 12,280, the number of shares of restricted stock that were held by Mr. Harvey,(ii) 2,916, the actual number of shares of common stock received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, (iii) 4,567, the target 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, 2013, and (iv) 5,548 the number of shares of common stock that could be received by Mr. Harvey in respect of the performance shares granted to him effective March 5, 2014 based on the performance level achieved during the performance period through the date of the change in control.

(16)

If Mr. Barneson had qualified for retirement on December 31, 2014 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; in such circumstances, the table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to the sum of (i) 12,280, the number of shares of restricted stock held by Mr. Barneson on December 31, 2014, (ii) 2,916, the actual number of shares of common stock received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 4,567 and 4,268, the target number of shares of common stock that could be received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(17)

If, on December 31, 2014, 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, 2012 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, 2013 and March 5, 2014 would have vested; in such circumstances, this table reflects the aggregate market value, determined based on a per share price of $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, of a number of shares equal to (i) 12,280, the number of shares of restricted stock that were held by Mr. Barneson, (ii) 2,916, the actual number of shares of common stock received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2012 based on the performance level achieved during the applicable three-year performance period as determined by our compensation committee in early 2015, and (iii) 4,567 and 4,268, the target number of shares of common stock that could be received by Mr. Barneson in respect of the performance shares granted to him effective March 5, 2013 and March 5, 2014, respectively.

(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 $71.43, the closing price per share of our common stock as reported on the Nasdaq Global Select Market on December 31, 2014, 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, 2014 had previously vested. Accordingly, no spread is reflected in this table. In any event, the $80.01 per share exercise price of such option rights exceeded the $71.43 closing price per share of our common stock as reported on the Nasdaq Stock Market on December 31, 2014.

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(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 2014: Mr. Hassey elected to receive 421 shares of common stock in lieu of $33,684 of his annual retainer; Ms. Martin elected to receive 700 shares of common stock in lieu of $48,034 of her annual retainer; Mr. Murdy elected to receive 583 shares of common stock in lieu of $40,005 of his annual retainer; Dr. Osborne elected to receive 933 shares of common stock in lieu of $64,022 of his annual retainer; and Mr. Wilcox elected to receive 700 shares of common stock in lieu of $48,034 of his annual retainer. In each case, the number of shares received was determined based on a per share price of $68.62, 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, except for Mr. Hassey, whose number of shares received was determined based on a per share price of $80.01, 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 Mr. Hassey's annual retainer.

(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 4, 2014, in accordance with our director compensation policy described below, each non-employee director, except Mr. Hassey, 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 $68.62, resulting in the issuance of 1,384 shares of restricted stock to each non-employee director, other than Mr. Hassey. On September 10, 2014, the date Mr. Hassey was appointed to our board of directors, Mr. Hassey received a grant of restricted stock having a value of $71,250, which was prorated to reflect service on the board of directors of less than one full year prior to the 2015 meeting of the stockholders; 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 $79.27, resulting in the issuance of 898 shares of restricted stock. For additional information regarding the assumptions made in the valuation of restricted stock awards with respect to our 2014 fiscal year, see Note 9 of the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014. As of December 31, 2014, each non-employee director held 1,384 shares of restricted stock, except for Mr. Hassey, who held 898 shares of restricted stock. The restrictions on 100% of the shares of restricted stock granted to non-employee directors will lapse on June 4, 2015 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.

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•	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

•	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 Equity Incentive Plan initially became effective on July 6, 2006. Thereafter, our board of directors amended and restated the Equity Incentive 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 Equity Incentive Plan. Subsequently, the Equity Incentive 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 Equity Incentive Plan. Following June 8, 2010, our board of directors amended and restated the Equity Incentive 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 Equity Incentive Plan. The Equity Incentive Plan is our only equity compensation plan. A copy of the Equity Incentive Plan is attached as Appendix A to this Proxy Statement.

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(2)	Reflects options to purchase 16,645 shares of common stock, restricted stock units covering 5,357 shares of our common stock and performance shares covering 503,799 shares of our common stock, in each case outstanding as of December 31, 2014, and does not include 183,197 unvested restricted shares outstanding on December 31, 2014.

(3)	Reflects the exercise price per share of our common stock purchasable upon exercise of options outstanding as of December 31, 2014. 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, 2014.

(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 Equity Incentive Plan, taking into account all shares issued under the Equity Incentive Plan. As of December 31, 2014, 1,419,872 shares of our common stock had been issued thereunder. Of such 1,419,872 shares, 183,197 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 Securities Exchange Act of 1934.

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(1)	Includes shares of our common stock that as of April 10, 2015 were issuable upon exercise of options within 60 days after April 10, 2015, as follows: Hockema (8,037 shares); Rinkenberger (803 shares); Donnan (2,083 shares); Harvey (1,202 shares); Barneson (2,334 shares) and all current directors and executive officers as a group (15,102 shares).

(2)

Includes shares of restricted stock that remained subject to forfeiture as of April 10, 2015, as follows: Hockema (29,988 shares); Rinkenberger (15,191 shares); Donnan (13,210 shares); Harvey (39,187 shares); Barneson (10,831 shares)Bartholomew (1,384 shares); Foster (1,384 shares); Hassey (898 share); Hopp (1,384 shares); Martin (1,384 shares); Murdy (1,384 shares); Osborne (1,384 shares); Quinn (1,384 shares); Van Leeuwen (1,384 shares); Wilcox (1,384 shares); and all current directors and executive officers as a group (140,865 shares).

(3)	Includes 104,381 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 Dimensional Fund Advisors LP are as reported on Amendment No. 4 to Schedule 13G filed by the Dimensional Fund Advisors LP on February 5, 2015. Dimensional Fund Advisors LP has sole voting power with respect to 1,512,388 shares and sole dispositive power with respect to 1,549,804 shares. The principal address of Dimensional Fund Advisors, LP is Palisades West, Building One, 6300 Bee Caves Road, Austin, Texas, 78746.

(6)	Shares beneficially owned by BlackRock, Inc. are as reported on Amendment No. 4 to Schedule 13G filed by BlackRock, Inc. on January 22, 2015. BlackRock, Inc. has sole voting power with respect to 1,498,549 shares and sole dispositive power with respect to 1,547,045 shares. The principal address of BlackRock, Inc. is 40 East 52nd Street, New York, New York 10022.

(7)

Shares beneficially owned by Vanguard Group, Inc. are as reported on Amendment No. 2 to Schedule 13G filed by Vanguard Group, Inc. on February 10, 2015. Vanguard Group, Inc. has sole voting power with respect to 23,751 shares and sole dispositive power with respect to 1,156,141 shares. Vanguard Group, Inc. has shared dispositive power with respect to 22,551 shares. The principal address of Vanguard Group, Inc. is 100 Vanguard Boulevard, Malvern, Pennsylvania 19355.

(8)

Shares beneficially owned by Hotchkis and Wiley Capital Management, LLC are as reported on Schedule 13G filed by Hotchkis and Wiley Capital Management, LLC on February 13, 2015. Hotchkis and Wiley Capital Management, LLC has sole voting power with respect to 850,405 shares and sole dispositive power with respect to 1,002,405 shares. The principal address of Hotchkis and Wiley Capital Management, LLC is 725 S. Figueroa Street 39th Floor, Los Angeles, California 90017.

(9)

Shares beneficially owned by Macquarie Group Limited, Macquarie Bank Limited, Delaware Management Holdings, Inc. and Delaware Management Business Trust are as reported on Schedule 13G filed by Macquarie Group Limited, Macquarie Bank Limited, Delaware Management Holdings, Inc. and Delaware Management Business Trust on February 13, 2015. Macquarie Group Limited and Macquarie Bank Limited have sole voting and dispositive power with respect to 0 shares. Delaware Management Holdings, Inc. and Delaware Management Business Trust have sole voting and sole dispositive power with respect to 972,900 shares. The principal address of Macquarie Group Limited and Macquarie Bank Limited is No. 1 Martin Place, Sydney, New South Wales, Australia. The principal address of Delaware Management Holdings, Inc. and Delaware Management Business Trust is 2005 Market Street, Philadelphia, PA 19103.

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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 consist principally of fees for tax advisory services.

(4)

All other fees for 2013 consist of the subscription fee to the Deloitte & Touche LLP Research Tool Library and fees relating to the review of agreed-upon procedures relating to certain environmental matters. 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 SEC and our response to such comments.

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(i)	Conduct resulting in an accounting restatement due to material noncompliance with any financial reporting requirement under the U.S. federal securities laws.

(ii)	Engaging in any activity, as an employee, principal, agent, or consultant for another entity that competes with the Company in any actual, researched, or prospective product, service, system, or business activity for which the Participant has had any direct responsibility during the last two years of his or her employment with the Company or a Subsidiary, in any territory

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(iii)	Soliciting any employee of the Company or a Subsidiary to terminate his or her employment with the Company or a Subsidiary.

(iv)

The disclosure to anyone outside the Company or a Subsidiary, or the use in other than the Company’s or a Subsidiary’s business, without prior written authorization from the Company, of any confidential, proprietary or trade secret information or material relating to the business of the Company and its Subsidiaries acquired by the Participant during his or her employment with the Company or its Subsidiaries or while acting as a consultant for the Company or its Subsidiaries.

(v)

The failure or refusal to disclose promptly and to assign to the Company upon request all right, title and interest in any invention or idea, patentable or not, made or conceived by the Participant during employment by the Company or any Subsidiary, relating in any manner to the actual or anticipated business, research or development work of the Company or any Subsidiary or the failure or refusal to do anything reasonably necessary to enable the Company or any Subsidiary to secure a patent where appropriate in the United States and in other countries.

(vi)	Activity that results in Termination for Cause.

(i)	Earnings per share;

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(ii)	Net income (before or after taxes);

(iii)	Cash flow;

(iv)	Return measures (including, but not limited to, return on assets, revenue, equity or sales);

(v)	Cash flow return on investments;

(vi)	Earnings before or after taxes, interest, depreciation and amortization;

(vii)	Growth in sales or revenues;

(viii)	Share price (including, but not limited to, growth measures and total shareholder return);

(ix)	Operating measures (including, but not limited to, operating margin and operating costs); and

(x)	Any of the above criteria as compared to the performance of a published or a special index deemed applicable by the Committee, including, but not limited to, the Standard & Poor’s 500 Stock Index.

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(i)	Any grant may specify that the amount payable on exercise of an Appreciation Right may be paid by the Company in cash, in Common Shares or in any combination thereof and may either grant to the Participant or retain in the Committee the right to elect among those alternatives.

(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)	Any grant may specify that such Appreciation Right may be exercised only in the event of, or earlier in the event of, termination of employment of the Participant, whether by retirement, death, disability or otherwise, or a Change in Control.

(v)	Any grant may provide for the payment to the Participant of dividend equivalents thereon in cash or Common Shares on a current, deferred or contingent basis.

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

(vii)	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 will be equal to or greater 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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(i)	Each grant will specify the number of Common Shares to which it pertains, subject to the limitations set forth in Section 4 of this Plan.

(ii)	If a Non-Employee Director subsequently becomes an employee of the Company or a Subsidiary while remaining a member of the Board, any Option Rights held under the Plan by such individual at the time of such commencement of employment will not be affected thereby.

(iii)	Option Rights may be exercised by a Non-Employee Director only upon payment to the Company in full of the Option Price of the Common Shares to be delivered. Such payment will be made in cash or in Common Shares then owned by the Optionee for at least 6 months, or in a combination of cash and such Common Shares.

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(i)	any amount actually paid therefor by the Participant pursuant to this Plan, and

(ii)	the Market Value per Share of the Common Shares on the date of such acquisition.

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