Edward van der Horst - 15 Feb 2023 Form 4 Insider Report for Sensei Biotherapeutics, Inc. (SNSE)

Role: Chief Scientific Officer
Signature: /s/ Mark Ballantyne, Attorney-in-Fact
Issuer symbol: SNSE
Transactions as of: 15 Feb 2023
Net transactions value: $0
Form type: 4
Filing time: 17 Feb 2023, 16:01:41 UTC
Previous filing: 16 Dec 2022
Next filing: 16 Feb 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SNSE	Common Stock	Award	$0	+23,565	+111%	$0.000000	44,738	15 Feb 2023	Direct	F1
transaction	SNSE	Common Stock	Award	$0	+17,700	+40%	$0.000000	62,438	15 Feb 2023	Direct	F2

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	SNSE	Stock Option (Right to Buy)	Award	$0	+75,000		$0.000000	75,000	15 Feb 2023	Common Stock	75,000	$1.43	Direct	F3

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

Explanation of Responses:

Id	Content
F1	These shares represent restricted stock units (the "RSUs"). Each RSU represents a contingent right to receive one share of the common stock of the Issuer. The shares underlying the RSUs are fully vested.
F2	These shares represent RSUs. Each RSU represents a contingent right to receive one share of the common stock of the Issuer. The shares underlying the RSUs vest in four equal annual installments on each of February 15, 2024, February 15, 2025, February 15, 2026 and February 15, 2027, subject to the Reporting Person's continuous service with the Issuer as of each such date.
F3	The option shall vest over a period of four years as follows: 25% of the total number of shares subject to the option shall vest on February 15, 2024, and the remainder will vest 1/48th of total number of shares subject to the option monthly thereafter over the remaining three years, subject to the Reporting Person's continuous service with the Issuer as of each such date.