SEC Form 4 · accession 0000899243-18-008058

SEATTLE GENETICS INC /WA · SGEN

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — See Remarks

Period of report

Mar 15, 2018

Accepted (ET)

Mar 19, 2018 · 7:35 pm EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001060736

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Common Stock^F1	Mar 15, 2018	M	5,000	$12.00	A	169,906	D
Common Stock^F3,F1	Mar 15, 2018	S	4,800	$58.09	D	165,106	D
Common Stock^F1	Mar 15, 2018	S	200	$58.86	D	164,906	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Non-Qualified Stock Option (right to buy)^F4	$12.00	Mar 15, 2018	M	5,000	D	—	Aug 27, 2020	Common Stock	5,000	51,498	D

F1Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting and 285 shares acquired under the Amended and Restated 2000 Employee Stock Purchase Plan on January 31, 2018.
F2The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.
F3Reflects sales of ordinary shares executed in multiple transactions at prices ranging from $57.64 to $58.61. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the sales were effected.
F4Shares vested at a rate of 25% on 8/27/2011 and monthly thereafter until all the shares were fully vested on 8/27/2014.

Chief Technical Officer 5500 - Technical Operations