Vaughn B. Himes - 01 Nov 2021 Form 4 Insider Report for Seagen Inc.

Role: Chief Technical Officer
Signature: By: /s/ Jennifer Prosba For: Vaughn B. Himes
Issuer symbol: N/A
Transactions as of: 01 Nov 2021
Net transactions value: +$99,974
Form type: 4
Filing time: 03 Nov 2021, 19:20:00 UTC
Previous filing: 27 Sep 2021
Next filing: 12 Nov 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SGEN	Common Stock	Options Exercise	$99,974	+2,156	+3.7%	$46.37	59,845	01 Nov 2021	Direct	F1
holding	SGEN	Common Stock						120,605	01 Nov 2021	by Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SGEN	Incentive Stock Option (right to buy)	Options Exercise	$0	-2,156	-100%	$0.000000^*	0	01 Nov 2021	Common Stock	2,156	$46.37	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting.
F2	Options vested at a rate of 25% on 8/17/18 and monthly thereafter until all the options were fully vested on 8/17/21.