Verastem (VSTM) CEO sells 806 shares to cover RSU tax withholding

Rhea-AI Filing Summary

Verastem, Inc. President and CEO Dan Paterson reported an open-market sale of 806 shares of common stock at $5.82 per share. After the transaction, he directly holds 612,113 shares of Verastem common stock.

The filing explains that the sale was made to satisfy statutory withholding requirements arising from the vesting of restricted stock units, indicating it was a tax-related transaction tied to equity compensation rather than a discretionary reduction of his overall stake.

Insider Trade Summary 10b5-1

Net Seller: 806 shares ($4,691)

Net Sell 1 txn

Insider Paterson Dan

Role President and CEO

Sold 806 shs ($5K)

Type	Security	Shares	Price	Value
Sale	Common Stock	806	$5.82	$5K

Holdings After Transaction: Common Stock — 612,113 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 806 shares Sale price per share: $5.82 per share Shares held after transaction: 612,113 shares

3 metrics

Shares sold 806 shares Open-market sale on May 4, 2026 to satisfy tax withholding

Sale price per share $5.82 per share Price for Verastem common stock in the reported sale

Shares held after transaction 612,113 shares CEO Dan Paterson’s direct Verastem holdings after the sale

Key Terms

restricted stock units, statutory withholding requirements, open-market sale, Form 4

4 terms

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.

statutory withholding requirements financial

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

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 regulatory

"The sale reported on this Form 4 represents shares sold"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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).

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)
05/04/2026

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	05/04/2026		S		806(1)	D	$5.82	612,113	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	05/06/2026
	** 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 insider transaction did Verastem (VSTM) report in this Form 4?

Verastem reported that President and CEO Dan Paterson sold 806 shares of common stock at $5.82 per share. The transaction is disclosed as an open-market sale and is linked to tax withholding on vested restricted stock units.

Why did Verastem (VSTM) CEO Dan Paterson sell 806 shares?

The CEO sold 806 shares to satisfy statutory tax withholding requirements tied to the vesting of restricted stock units. This means the sale was executed to cover taxes on equity compensation, rather than as a standalone portfolio decision to reduce his ownership stake.

How many Verastem (VSTM) shares does the CEO hold after this transaction?

Following the sale, CEO Dan Paterson directly holds 612,113 shares of Verastem common stock. This post-transaction holding figure comes directly from the Form 4 and shows his remaining ownership after the 806-share tax-related sale.

What was the sale price per share in the Verastem (VSTM) Form 4 filing?

The reported sale price was $5.82 per share for the 806 Verastem common shares sold. This price appears in the Form 4 as the transaction price per share for the open-market sale used to satisfy statutory tax withholding obligations.

Is the Verastem (VSTM) CEO’s sale described as open-market or another type?

The transaction is coded as an open-market sale of common stock in the Form 4. However, the footnote clarifies that the sale’s purpose was to cover statutory withholding taxes related to the vesting of restricted stock units granted as compensation.