Verastem, Inc. — Director's Dealing 2025

May 21, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Verastem, Inc. (VSTM)
CIK: 0001526119
Period of Report: 2025-05-16

Reporting Person: Paterson Dan (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-16	Common Stock	A	25000	$0.00	Disposed	370659	Direct
2025-05-16	Common Stock	A	150000	$0.00	Disposed	520659	Direct
2025-05-20	Common Stock	S	58677	$8.13	Disposed	461982	Direct

Footnotes

F1: The reported securities were subject to a performance restricted stock units ("RSU") award that was granted on August 2, 2023. 25,000 RSUs vested on May 16, 2025, upon the Issuer's Compensation Committee of the board of directors determining the performance criteria of approval by the U.S. Food and Drug Administration (the "FDA") of a new drug application ("NDA") for a product which contains avutometinib in combination with defactinib had occurred.

F2: The reported securities were subject to a performance RSU award that was granted on June 18, 2024. 150,000 RSUs vested on May 16, 2025, upon the Issuer's Compensation Committee of the board of directors determining the performance criteria of approval by the FDA of an NDA for the Company's combination therapy of avutometinib and defactinib for the treatment of low-grade serous ovarian cancer had occurred.

F3: The sale reported on this Form 4 represents shares sold by the Reporting Person to satisfy statutory withholding requirements in connection with the vesting of restricted stock units.