Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Cline Darren S
 2. Date of Event Requiring Statement (Month/Day/Year)
02/06/2015		 3. Issuer Name and Ticker or Trading Symbol
SEATTLE GENETICS INC /WA [SGEN]
(Last)
(First)
(Middle)
21823 30TH DRIVE SE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP, Commercial
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

BOTHELL, WA 98021		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock (1) 40,635
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Incentive Stock Option (right to buy)   (2) 08/24/2021 Common Stock 4,167 $ 15.46 D  
Incentive Stock Option (right to buy)   (3) 10/29/2020 Common Stock 8,124 $ 16.41 D  
Incentive Stock Option (right to buy)   (4) 02/28/2022 Common Stock 2,761 $ 18.46 D  
Incentive Stock Option (right to buy)   (5) 08/20/2022 Common Stock 3,241 $ 26.1 D  
Incentive Stock Option (right to buy)   (6) 02/03/2025 Common Stock 417 $ 31.37 D  
Incentive Stock Option (right to buy)   (7) 08/19/2023 Common Stock 2,436 $ 41.04 D  
Incentive Stock Option (right to buy)   (8) 08/26/2024 Common Stock 2,268 $ 44.09 D  
Non-Qualified Stock Option (right to buy)   (2) 08/24/2021 Common Stock 7,292 $ 15.46 D  
Non-Qualified Stock Option (right to buy)   (3) 10/29/2020 Common Stock 7,892 $ 16.41 D  
Non-Qualified Stock Option (right to buy)   (4) 02/28/2022 Common Stock 8,907 $ 18.46 D  
Non-Qualified Stock Option (right to buy)   (5) 08/20/2022 Common Stock 10,926 $ 26.1 D  
Non-Qualified Stock Option (right to buy)   (6) 02/03/2025 Common Stock 9,583 $ 31.37 D  
Non-Qualified Stock Option (right to buy)   (7) 08/19/2023 Common Stock 13,564 $ 41.04 D  
Non-Qualified Stock Option (right to buy)   (8) 08/26/2024 Common Stock 13,857 $ 44.09 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Cline Darren S
21823 30TH DRIVE SE
BOTHELL, WA 98021		       SVP, Commercial  

Signatures

Darren S Cline 02/17/2015
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Amount of securities beneficially owned include 36,250 restricted stock units which shall be settled in common stock upon vesting.
(2) Shares vested at a rate of 25% on 8/24/2012. The remainder shall vest monthly until all the shares are vested on 8/24/2015.
(3) Shares vested at a rate of 25% on 10/29/2011 and monthly thereafter until vested in full on 10/29/2014.
(4) Shares vested at a rate of 25% on 2/28/2013. The remainder shall vest monthly until all the shares are vested on 2/28/2016.
(5) Shares vested at a rate of 25% on 8/20/2013. The remainder shall vest monthly until all the shares are vested on 8/20/2016.
(6) Shares shall vest at a rate of 25% on 2/3/2016. The remainder shall vest monthly until all the shares are vested on 2/3/2019.
(7) Shares vested at a rate of 25% on 8/19/2014. The remainder shall vest monthly until all the shares are vested on 8/19/2017.
(8) Shares shall vest at a rate of 25% on 8/26/2015. The remainder shall vest monthly until all the shares are vested on 8/26/2018.

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