Seattle Genetics Inc (SGEN): Baker Bros. Advisors Raises Stake

Page 5 of 16 – SEC Filing

SCHEDULE 13D

 

CUSIP No.  812578102

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1	NAMES OF REPORTING PERSONS Felix J. Baker
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)			(a)¨ (b)¨
3	SEC USE ONLY
4	SOURCE OF FUNDS (See Instructions) OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)			¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 44,347,986 (1)
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 44,347,986 (1)
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 44,347,986 (1)
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)				¨
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 31.5% (1)(2)
14	TYPE OF REPORTING PERSON (See Instructions) IN, HC

(1) Includes 109,260 shares of the Issuer’s common stock
underlying 109,260 options.

(2) Based
on 140,516,451 shares of common stock as of July 20, 2016 as reported in the Issuer’s 10-Q filed with the SEC on July
26, 2016.

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