Peter A. Thompson - Jun 4, 2021 Form 4 Insider Report for Silverback Therapeutics, Inc. (SPRY)

Role: Director, 10%+ Owner
Signature: /s/ Jeffrey C. Pepe, Attorney-in-Fact
Stock symbol: SPRY
Transactions as of: Jun 4, 2021
Transactions value $: $0
Form type: 4
Date filed: 9/21/2021, 05:14 PM
Previous filing: Jun 9, 2021
Next filing: Jun 10, 2021

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	SPRY	Stock Option (right to buy)	Award	$0	+15K		$0.00	15K	Jun 4, 2021	Common Stock	15K	$28.83	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	The shares subject to the option vest on the earlier of June 4, 2022 or the date of the 2022 annual meeting of the Issuer's stockholders which date has not been set by the Issuer's Board of Directors.
F2	The Reporting Person is the designated representative of OrbiMed Advisors LLC ("OrbiMed Advisors") on the Issuer's Board of Directors. The reportable securities are owned indirectly by OrbiMed Private Investments VI, LP ("OPI VI"). OrbiMed Capital GP VI LLC ("GP VI") is the general partner of OPI VI and OrbiMed Advisors is the managing member of GP VI. The Reporting Person disclaims beneficial ownership of the securities reported herein for the purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any.

Content

The shares subject to the option vest on the earlier of June 4, 2022 or the date of the 2022 annual meeting of the Issuer's stockholders which date has not been set by the Issuer's Board of Directors.

The Reporting Person is the designated representative of OrbiMed Advisors LLC ("OrbiMed Advisors") on the Issuer's Board of Directors. The reportable securities are owned indirectly by OrbiMed Private Investments VI, LP ("OPI VI"). OrbiMed Capital GP VI LLC ("GP VI") is the general partner of OPI VI and OrbiMed Advisors is the managing member of GP VI. The Reporting Person disclaims beneficial ownership of the securities reported herein for the purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any.