Verastem (VSTM) awards 200,000 stock options to development chief

Rhea-AI Filing Summary

Verastem, Inc. reported an insider equity award for Michael Kauffman, who serves as both a director and President of Development. On January 6, 2026, he received a stock option covering 200,000 shares of Verastem common stock with an exercise price of $6.88 per share, held directly.

The option vests over three years: 33.33% of the shares vest on the first anniversary of the January 6, 2026 grant date, and an additional 8.33% vest at the end of each three‑month period thereafter until the third anniversary. Vesting requires that Kauffman continue to serve as an employee or other service provider to Verastem on each vesting date.

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

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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^*

Kauffman Michael

(Last) (First) (Middle)

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

SUITE 500

(Street)

NEEDHAM MA 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
X	Officer (give title below)		Other (specify below)
	President of Development

3. Date of Earliest Transaction (Month/Day/Year)
01/06/2026

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)
			Code	V	Amount	(A) or (D)	Price

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$6.88	01/06/2026		A		200,000		(1)	01/06/2036	Common Stock	200,000	$0	200,000	D

Explanation of Responses:

1. The stock option vests 33.33% of the shares on the first anniversary of January 6, 2026 (the "Grant Date"), and an additional 8.33% will vest at the end of each successive three-month period following the first anniversary of the Grant Date until the third anniversary of the Grant Date (with the number of shares vesting on each vesting date rounded down to the nearest whole share, except with respect to the final vesting date on which all remaining unvested shares shall vest) provided that the Reporting Person continues to serve as an employee of or other service provider to the Issuer on each such vesting date.

	/s/ Daniel Calkins, Attorney in Fact	01/08/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

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

Verastem reported a stock option grant to Michael Kauffman200,000 shares of common stock.

Who is the reporting person in Verastem (VSTM)'s latest Form 4 filing?

The reporting person is Michael Kauffman, who is both a director and President of Development at Verastem, Inc.

How many Verastem (VSTM) stock options were granted and at what exercise price?

A stock option for 200,000 shares of Verastem common stock was granted, with an exercise price of $6.88 per share.

When do Michael Kauffman’s Verastem (VSTM) stock options vest?

The option vests 33.33% on the first anniversary of January 6, 2026, then 8.33% at the end of each successive three‑month period until the third anniversary of that date.

What service condition applies to the Verastem (VSTM) stock option grant?

Each vesting installment requires that Michael Kauffman continue to serve as an employee or other service provider to Verastem on the applicable vesting date.

Is the Verastem (VSTM) stock option grant held directly or indirectly?

The Form 4 shows the 200,000-share stock option as held directly by Michael Kauffman.

Did this Verastem (VSTM) Form 4 report any sale of common stock?

No sale of common stock was reported; the Form 4 discloses a stock option grant for 200,000 underlying shares.