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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1060736	Seattle Genetics Inc	SGEN	Biological Products, (No Disgnostic Substances) (2836)	911874389

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1241357	I Jean Liu	21823 30Th Drive Se Bothell WA 98021	See Remarks	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2019-08-30	18,995	$0.00	79,899	No	4	A	Direct
Common Stock	Disposition	2019-09-03	1,779	$0.00	78,120	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	A	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Incentive Stock Options (right to buy)	Acquisiton	2019-08-30	1,333	$0.00	1,333	$72.64
Common Stock	Non. Qualified Stock Option (right to buy)	Acquisiton	2019-08-30	43,786	$0.00	43,786	$72.64

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
1,333		2029-08-30	No	4	A	Direct
43,786		2029-08-30	No	4	A	Direct

Footnotes

These shares represent restricted stock units and will be settled in common stock upon vesting.
Shares shall vest at a rate of 25% on each anniversary of the grant date until all shares are fully vested four years from the grant date.
Amount of securities beneficially owned following reported transactions includes restricted stock units subject to vesting.
Shares sold pursuant to a 10b5-1 arrangement to satisfy tax obligations arising out of the vesting of previously granted restricted stock units.
Options shall vest at a rate of 25% one year from grant date and monthly thereafter until all shares are fully vested four years from grant date.