Henry C. Rath - Mar 1, 2022 Form 4 Insider Report for Surface Oncology, Inc. (SURF)

Role: Chief Business Officer
Signature: /s/ Jessica Fees, as Attorney-in-Fact
Stock symbol: SURF
Transactions as of: Mar 1, 2022
Transactions value $: $0
Form type: 4
Date filed: 3/3/2022, 07:00 PM
Next filing: Aug 5, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SURF	Common Stock	Award	$0	+38K		$0.00	38K	Mar 1, 2022	Direct	F1

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	SURF	Stock Option (Right to Buy)	Award	$0	+108K		$0.00	108K	Mar 1, 2022	Common Stock	108K	$3.64	Direct	F2

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

Explanation of Responses:

Id	Content
F1	The shares were acquired pursuant to a restricted stock unit award under the 2018 Stock Option and Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. The restricted stock units vest as follows: 40% on August 1, 2022 and the remaining 60% on August 1, 2023, so long as the reporting person remains an employee or other service provider of the Issuer on such date.
F2	The option vests in equal monthly installments over four years, so that all of the underlying shares shall be vested on February 8, 2026, so long as the reporting person remains an employee or other service provider of the Issuer on such dates.

Content

The shares were acquired pursuant to a restricted stock unit award under the 2018 Stock Option and Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. The restricted stock units vest as follows: 40% on August 1, 2022 and the remaining 60% on August 1, 2023, so long as the reporting person remains an employee or other service provider of the Issuer on such date.

The option vests in equal monthly installments over four years, so that all of the underlying shares shall be vested on February 8, 2026, so long as the reporting person remains an employee or other service provider of the Issuer on such dates.