Verastem (VSTM) director awarded 36,000 RSUs vesting through 2027

Rhea-AI Filing Summary

Bunn Paul A. reported acquisition or exercise transactions in this Form 4 filing.

Verastem, Inc. director Paul A. Bunn received an equity grant of 36,000 shares of Common Stock in the form of restricted stock units (RSUs) under the company’s Amended and Restated 2021 Equity Incentive Plan. This is a compensation-related award, not an open-market purchase.

Each RSU represents one share of Common Stock. The award vests in twelve substantially equal monthly installments from the end of June 2026 through April 2027, with the final installment vesting on the earlier of the day before the 2027 annual stockholder meeting or May 31, 2027, subject to his continued board service. After this grant, Bunn holds 44,333 shares directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Bunn Paul A.

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	36,000	$0.00	--

Holdings After Transaction: Common Stock — 44,333 shares (Direct, null)

Footnotes (1)

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Key Figures

RSUs granted: 36,000 shares Shares held after grant: 44,333 shares Grant price: $0.00 per share +2 more

5 metrics

RSUs granted 36,000 shares Restricted stock units awarded to director Paul A. Bunn

Shares held after grant 44,333 shares Total Verastem Common Stock held directly post-transaction

Grant price $0.00 per share Compensation award, not an open-market purchase

Vesting period start June 2026 First of eleven monthly vesting installments

Final vesting deadline May 31, 2027 Latest date for final RSU installment to vest

Key Terms

RSUs, Amended and Restated 2021 Equity Incentive Plan, vest, Annual Meeting of Stockholders

4 terms

RSUs financial

"RSUs granted to the Reporting Person under the Issuer's Amended and Restated 2021 Equity Incentive Plan."

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

Amended and Restated 2021 Equity Incentive Plan financial

"RSUs granted to the Reporting Person under the Issuer's Amended and Restated 2021 Equity Incentive Plan."

vest financial

"The RSUs vest in twelve substantially equal installments (rounded down to the nearest whole share on each vesting date..."

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Annual Meeting of Stockholders financial

"The last installment shall vest on the earlier of (i) the day before the 2027 Annual Meeting of Stockholders is held..."

Form 4 Insider Transactions: What Each Field Means →

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 MASSACHUSETTS 02494

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

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

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

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

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
Common Stock	05/21/2026		A		36,000(1)	A	$0.00	44,333	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. RSUs granted to the Reporting Person under the Issuer's Amended and Restated 2021 Equity Incentive Plan. Each RSU represents the contingent right to receive one share of Common Stock. The RSUs vest in twelve substantially 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 shall vest). The first eleven installments shall vest beginning on the last day of each month over a period from June, 2026 to April, 2027 and the last installment shall vest on the earlier of (i) the day before the 2027 Annual Meeting of Stockholders is held or (ii) May 31, 2027, provided that the Reporting Person continues to serve as a director of the Issuer on each such vesting date.

	/s/ Daniel Calkins, Attorney in Fact	05/26/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Verastem (VSTM) director Paul A. Bunn report on this Form 4?

Paul A. Bunn reported receiving 36,000 restricted stock units (RSUs) of Verastem Common Stock as a compensation grant. These RSUs were awarded under Verastem’s Amended and Restated 2021 Equity Incentive Plan and increase his directly held shares to 44,333 after the transaction.

Is Paul A. Bunn buying or selling Verastem (VSTM) stock in this filing?

He is not buying or selling shares on the open market in this filing. The Form 4 shows a grant of 36,000 RSUs as compensation, recorded at a per-share price of $0.00, rather than a discretionary market purchase or sale.

How do the 36,000 Verastem (VSTM) RSUs granted to Paul A. Bunn vest?

The 36,000 RSUs vest in twelve substantially equal installments. Eleven installments vest on the last day of each month from June 2026 through April 2027. The final portion vests just before the 2027 annual stockholder meeting or on May 31, 2027, if he remains a director.

What does this RSU grant mean for Paul A. Bunn’s Verastem (VSTM) ownership?

After the grant, Paul A. Bunn directly holds 44,333 shares of Verastem Common Stock. The 36,000 RSUs convert into shares only as they vest over time, so the full economic benefit depends on his continued service and future stock price.

Under which plan were the Verastem (VSTM) RSUs granted to Paul A. Bunn?

The RSUs were granted under Verastem’s Amended and Restated 2021 Equity Incentive Plan. This plan authorizes equity-based awards like RSUs to directors and other participants, aligning their potential future compensation with the company’s stock performance.