XNAS:SGEN Seattle Genetics Inc Insider Activity 4 Filing - 5/16/2012

Effective Date 5/16/2012

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FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
ROSENBERG MORRIS
  2. Issuer Name and Ticker or Trading Symbol
SEATTLE GENETICS INC /WA [SGEN]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP, Process Sciences
(Last)
(First)
(Middle)
21823 30TH DRIVE SE
3. Date of Earliest Transaction (Month/Day/Year)
05/16/2012
(Street)

BOTHELL, WA 98021
4. If Amendment, Date Original Filed (Month/Day/Year)
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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 05/16/2012   M   200 A $4.45 17,843 D  
Common Stock 05/16/2012   S(1)   200 D $20.8 17,643(2) D  
Common Stock 05/18/2012   M   47,776 A $4.45 65,419 D  
Common Stock 05/18/2012   S(1)   47,776 D $21.8 17,643(2) D  
Common Stock 05/18/2012   M   17,024 A $4.45 34,667 D  
Common Stock 05/18/2012   S(1)   17,024 D $20.8 17,643(2) D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Incentive Stock Option (right to buy) $4.45 05/16/2012   M     200   (3) 09/05/2016 Common Stock 200 $ 0 17,024 D  
Incentive Stock Option (right to buy) $4.45 05/18/2012   M     17,024   (3) 09/05/2016 Common Stock 17,024 $ 0 0 D  
Non-Qualified Stock Option (right to buy) $4.45 05/18/2012   M     47,776   (3) 09/05/2016 Common Stock 47,776 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ROSENBERG MORRIS
21823 30TH DRIVE SE
BOTHELL, WA 98021
      EVP, Process Sciences  

Signatures

 Morris Z. Rosenberg   05/18/2012
** Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Dr. Rosenberg on March 15, 2012.
(2) Amount of securities beneficially owned following reported transactions includes 17,643 Restricted Stock Units subject to vesting.
(3) Shares shall vest at a rate of 25% on 9/06/07 and monthly thereafter until all the shares are fully vested on 9/06/10.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.

XNAS:SGEN Seattle Genetics Inc Insider Activity 4 Filling

Seattle Genetics Inc XNAS:SGEN Stock - Get Insider Activity SEC Filing of Seattle Genetics Inc XNAS:SGEN stocks, including company profile, shares outstanding, strategy, business segments, operations, officers, consolidated financial statements, financial notes and ownership information.

XNAS:SGEN Seattle Genetics Inc Insider Activity 4 Filing - 5/16/2012
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