Verastem insider Form 4 shows 6,250-share sale and option exercise

Q: What insider transaction did Verastem (VSTM) report on this Form 4?

The filing reports that a director of Verastem exercised stock options for 6,250 shares of common stock and sold 6,250 shares of common stock on 11/21/2025.

Q: What is the position of the reporting person at Verastem (VSTM)?

The reporting person is identified as a director of Verastem, Inc.

Q: What are the key terms of the Verastem (VSTM) stock option in this Form 4?

The derivative security is a stock option (right to buy) with an exercise price of $3.27 per share, covering 6,250 shares of common stock, and an expiration date of 06/18/2034.

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Verastem, Inc. (VSTM) director reports option exercise and share sale. On 11/21/2025, the reporting person exercised stock options for 6,250 shares of common stock at an exercise price of $3.27 per share and sold 6,250 common shares at a weighted average price of $10.00 per share under a Rule 10b5-1 trading plan. Following these transactions, the reporting person held 2,083 shares of Verastem common stock directly and 6,250 stock options directly.

Insider Trade Summary

Net Seller: 6,250 shares ($62,500)

Net Sell 3 txns

Insider Bunn Paul A.

Role Director

Sold 6,250 shs ($63K)

Type	Security	Shares	Price	Value
Exercise	Stock Options (right to buy)	6,250	$0.00	--
Sale	Common Stock	6,250	$10.00	$63K
Exercise	Common Stock	6,250	$3.27	$20K

Holdings After Transaction: Stock Options (right to buy) — 6,250 shares (Direct); Common Stock — 2,083 shares (Direct)

Footnotes (1)

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

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 11/25/2025 - 05:35 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Bunn Paul A.

(Last)

(First)

(Middle)

C/O VERASTEM, INC., 117 KENDRICK ST.,

SUITE 500

(Street)

NEEDHAM

02494

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Verastem, Inc. [ VSTM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/21/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	11/21/2025		S⁽¹⁾		6,250⁽¹⁾	D	$10⁽²⁾	2,083	D
Common Stock	11/21/2025		M⁽¹⁾		6,250⁽¹⁾	A	$3.27	8,333	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Options (right to buy)	$3.27	11/21/2025		M⁽¹⁾			6,250	⁽³⁾	06/18/2034	Common Stock	6,250	$0	6,250	D

Explanation of Responses:

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

2. 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.

3. 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.

	/s/ Daniel Calkins, Attorney in Fact	11/25/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Verastem (VSTM) report on this Form 4?

The filing reports that a director of Verastem exercised stock options for 6,250 shares of common stock and sold 6,250 shares of common stock on 11/21/2025.

At what prices did the Verastem (VSTM) director exercise and sell shares?

The director exercised stock options at an exercise price of $3.27 per share and sold common shares at a weighted average price of $10.00 per share, with individual sale prices ranging from $10.00 to $10.01.

How many Verastem (VSTM) shares and options does the insider hold after the transactions?

After the reported transactions, the insider directly owned 2,083 shares of Verastem common stock and 6,250 stock options directly.

Was the Verastem (VSTM) insider sale made under a Rule 10b5-1 trading plan?

Yes. The explanation states that the transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

What is the position of the reporting person at Verastem (VSTM)?

The reporting person is identified as a director of Verastem, Inc.

What are the key terms of the Verastem (VSTM) stock option in this Form 4?

The derivative security is a stock option (right to buy) with an exercise price of $3.27 per share, covering 6,250 shares of common stock, and an expiration date of 06/18/2034.

How did the Verastem (VSTM) stock option vest for this insider?

The stock option vested in twelve equal installments, with the first eleven installments vesting on the last day of the month from June 2024 to April 2025, and the final installment vesting on the day before the 2025 Annual Meeting of Stockholders.