SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

ROMP CHARLES R

(Last)

(First)

(Middle)

21823 30TH DRIVE SE

(Street)

BOTHELL

98021

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
04/15/2020

3. Issuer Name and Ticker or Trading Symbol
SEATTLE GENETICS INC /WA [ SGEN ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	EVP, Commercial

5. If Amendment, Date of 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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	55,771⁽¹⁾	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Incentive Stock Option (right to buy)	⁽²⁾	08/24/2021	Common Stock	2,778	$15.46	D
Incentive Stock Option (right to buy)	⁽³⁾	02/28/2022	Common Stock	799	$18.46	D
Incentive Stock Option (right to buy)	⁽⁴⁾	08/20/2022	Common Stock	1,620	$26.1	D
Incentive Stock Option (right to buy)	⁽⁵⁾	02/03/2025	Common Stock	417	$31.37	D
Incentive Stock Option (right to buy)	⁽⁶⁾	08/25/2025	Common Stock	2,220	$39.15	D
Incentive Stock Option (right to buy)	⁽⁷⁾	08/19/2023	Common Stock	1,218	$41.04	D
Incentive Stock Option (right to buy)	⁽⁸⁾	08/26/2024	Common Stock	1,276	$44.09	D
Incentive Stock Option (right to buy)	⁽⁹⁾	08/27/2026	Common Stock	2,207	$45.3	D
Incentive Stock Option (right to buy)	⁽¹⁰⁾	08/17/2027	Common Stock	2,156	$46.37	D
Incentive Stock Option (right to buy)	⁽¹¹⁾	08/30/2029	Common Stock	1,376	$72.64	D
Incentive Stock Option (right to buy)	⁽¹²⁾	08/30/2028	Common Stock	1,301	$76.86	D
Non-Qualified Stock Option (right to buy)	⁽¹³⁾	08/24/2021	Common Stock	13,884	$15.46	D
Non-Qualified Stock Option (right to buy)	⁽¹⁴⁾	05/09/2026	Common Stock	4,769	$34.2	D
Non-Qualified Stock Option (right to buy)	⁽¹⁵⁾	08/25/2025	Common Stock	13,666	$39.15	D
Non-Qualified Stock Option (right to buy)	⁽¹⁶⁾	08/26/2024	Common Stock	5,151	$44.09	D
Non-Qualified Stock Option (right to buy)	⁽¹⁷⁾	08/27/2026	Common Stock	17,374	$45.3	D
Non-Qualified Stock Option (right to buy)	⁽¹⁸⁾	08/17/2027	Common Stock	19,719	$46.37	D
Non-Qualified Stock Option (right to buy)	⁽¹⁹⁾	08/30/2029	Common Stock	11,849	$72.64	D
Non-Qualified Stock Option (right to buy)	⁽²⁰⁾	08/30/2028	Common Stock	12,476	$76.86	D

Explanation of Responses:

1. Amount of securities beneficially owned following reported transactions includes 36,159 restricted stock units subject to vesting.

2. Shares vested at a rate of 25% on 08/24/2012 and monthly thereafter until all the shares were fully vested on 08/24/2015.

3. Shares vested at a rate of 25% on 02/28/2013 and monthly thereafter until all the shares were fully vested on 02/28/2016.

4. Shares vested at a rate of 25% on 08/20/2013 and monthly thereafter until all the shares were fully vested on 08/20/2016.

5. Shares vested at a rate of 25% on 02/03/2016 and monthly thereafter until all the shares were fully vested on 02/03/2019.

6. Shares vested at a rate of 25% on 08/25/2016 and monthly thereafter until all the shares were fully vested on 08/25/2019.

7. Shares vested at a rate of 25% on 08/19/2014 and monthly thereafter until all the shares were fully vested on 08/19/2017.

8. Shares vested at a rate of 25% on 08/26/2015 and monthly thereafter until all the shares were fully vested on 08/26/2018.

9. Shares vested at a rate of 25% on 8/27/2017. The remainder shall vest monthly until all the shares are vested on 8/27/2020.

10. Shares vested at a rate of 25% on 08/17/2018. The remainder shall vest monthly until all the shares are vested on 08/17/2021.

11. Shares shall vest at a rate of 25% on 08/30/2020 and monthly thereafter until all the shares are fully vested on 08/30/2023.

12. Shares vested at a rate of 25% on 8/30/2019. The remainder shall vest monthly until all the shares are vested on 08/30/2022.

13. Shares vested at a rate of 25% on 08/24/2012 and monthly thereafter until all the shares were fully vested on 08/24/2015.

14. Shares vested at a rate of 25% on 05/09/2017. The remainder shall vest monthly until all the shares are vested on 05/09/2020.

15. Shares vested at a rate of 25% on 08/25/2016 and monthly thereafter until all the shares were fully vested on 08/25/2019.

16. Shares vested at a rate of 25% on 08/26/2015 and monthly thereafter until all the shares were fully vested on 08/26/2018.

17. Shares vested at a rate of 25% on 8/27/2017. The remainder shall vest monthly until all the shares are vested on 8/27/2020.

18. Shares vested at a rate of 25% on 08/17/2018. The remainder shall vest monthly until all the shares are vested on 08/17/2021.

19. Shares shall vest at a rate of 25% on 08/30/2020 and monthly thereafter until all the shares are fully vested on 08/30/2023.

20. Shares vested at a rate of 25% on 8/30/2019. The remainder shall vest monthly until all the shares are vested on 08/30/2022.

	By: /s/ Jean Liu For: Charles R Romp	04/21/2020
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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