Verastem, Inc. (VSTM) CEO sells 1,302 shares to cover RSU taxes

Rhea-AI Filing Summary

Verastem, Inc. President and CEO Dan Paterson reported selling 1,302 shares of common stock on 2026-08-03 at $5.81 per share. According to a footnote, these shares were sold to satisfy statutory withholding requirements related to the vesting of restricted stock units. Following the transaction, he directly owns 589,940 shares of common stock. The transaction is affirmed as conducted under a Rule 10b5-1 trading plan.

Insider Trade Summary 10b5-1

Net Seller: 1,302 shares

Net Sell 1 txn

Insider Paterson Dan

Role President and CEO

Sold 1,302 shs ($8K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	1,302	$5.81	$8K

Holdings After Transaction: Common Stock — 589,940 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares sold: 1302 shares Sale price per share: $5.8100 Shares owned after transaction: 589940 shares

3 metrics

Shares sold 1302 shares Common Stock sold by President and CEO on 2026-08-03

Sale price per share $5.8100 Price per share for 1,302 Verastem common shares sold

Shares owned after transaction 589940 shares Directly owned Verastem common stock following the sale

Key Terms

statutory withholding requirements, restricted stock units, Rule 10b5-1, open market or private transaction

4 terms

statutory withholding requirements financial

"shares sold by the Reporting Person to satisfy statutory withholding requirements"

restricted stock units financial

"in connection with the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Rule 10b5-1 regulatory

"The transaction is affirmed as conducted under a Rule 10b5-1 trading plan"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

open market or private transaction financial

"Sale in open market or private transaction"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/05/2026 - 04:37 PM Accepted by SEC EDGAR 08/05/2026 - 04:37 PM Learn about SEC filing dates

FAQ

What insider transaction did Verastem (VSTM) report for CEO Dan Paterson?

Verastem reported that CEO Dan Paterson sold 1,302 shares of common stock on 2026-08-03 at $5.81 per share. A footnote states the sale covered statutory tax withholding tied to vesting restricted stock units.

How many Verastem (VSTM) shares does CEO Dan Paterson hold after this Form 4 sale?

After the reported transaction, CEO Dan Paterson directly owns 589,940 shares of Verastem common stock. The Form 4 lists this post-transaction balance following the sale of 1,302 shares to cover RSU-related tax withholding.

What price did Verastem (VSTM) CEO Dan Paterson receive per share in the reported sale?

The Form 4 shows CEO Dan Paterson sold shares at an average price of $5.81 per share. The transaction involved 1,302 shares of Verastem common stock in an open-market or private transaction.

Was the Verastem (VSTM) CEO’s share sale made under a Rule 10b5-1 plan?

Yes. The filing’s Rule 10b5-1 checkbox is marked true, indicating the transaction was conducted pursuant to a pre-established trading plan, which can reduce the informational value of its timing.

Why did Verastem (VSTM) CEO Dan Paterson sell 1,302 shares according to the Form 4 footnote?

The footnote explains the 1,302 shares were sold to satisfy statutory withholding requirements arising from the vesting of restricted stock units, rather than as a discretionary open-market sale for portfolio reallocation.

What type of security was involved in the Verastem (VSTM) CEO’s reported transaction?

The transaction involved Verastem Common Stock. The sale related to shares issued upon vesting of restricted stock units, with a portion sold to cover associated tax withholding obligations.

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).

X

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^*

Paterson Dan

(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
X	Officer (give title below)		Other (specify below)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/03/2026

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	08/03/2026		S		1,302(1)	D	$5.81	589,940	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. 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.

	/s/ Daniel Calkins, Attorney in Fact	08/05/2026
	** 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)