Paul A. Bunn - 21 Nov 2025 Form 4 Insider Report for Verastem, Inc. (VSTM)

Reporting relationship: Director
Issuer ticker: VSTM
Reported as of: 21 Nov 2025
Net transaction value: -$42,062
SEC form: 4
Accepted by SEC: 25 Nov 2025, 17:35:55 UTC
Prior SEC filing: 14 Oct 2025
Next SEC filing: 26 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Daniel Calkins, Attorney in Fact

Key filing fact

Paul A. Bunn filed Form 4 for Verastem, Inc. (VSTM) on 25 Nov 2025.

Key facts

This page summarizes Paul A. Bunn's Form 4 filing for Verastem, Inc. (VSTM).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 25 Nov 2025, 17:35.

Change

Previous filing in this sequence was filed on 14 Oct 2025.
Current net transaction value: -$42,062.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001868760 Primary reporting owner

Bunn Paul A.

Relationship: Director
Address: C/O VERASTEM, INC., 117 KENDRICK ST.,, SUITE 500, NEEDHAM
Signature: /s/ Daniel Calkins, Attorney in Fact
Signature date: 25 Nov 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

VSTM transaction

Common Stock

Sale

Transaction value: $62,500
Shares: -6,250
Change %: -75%
Price: $10.00
Shares after: 2,083
Date: 21 Nov 2025
Ownership: Direct
Footnotes: F1, F2

VSTM transaction

Common Stock

Options Exercise

Transaction value: $20,438
Shares: +6,250
Change %: +300%
Price: $3.27
Shares after: 8,333
Date: 21 Nov 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

VSTM transaction Derivative

Stock Options (right to buy)

Options Exercise

Transaction value: $0
Shares: -6,250
Change %: -50%
Price: $0.000000
Shares after: 6,250
Date: 21 Nov 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 6,250
Exercise price: $3.27
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $10.00 through $10.01, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the range set forth herein.

Footnote F3

The stock option vested in twelve equal installments (rounded down to the nearest whole share on each vesting date except with respect to the final vesting date on which the remaining unvested portion vested). The first eleven installments vested beginning on the last day of the month over the period from June, 2024 to April, 2025 and the last installment vested on the day before the 2025 Annual Meeting of Stockholders.