Verastem files Form 144 to sell 21,492 shares

Verastem Inc. submitted a Form 144 notice reporting a proposed resale of 21,492 shares of Common Stock originally issued as vested Restricted Stock Units dated 12/15/2021.

Accepted by SEC EDGAR 06/25/2026 - 04:01 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Verastem Inc. submitted a Form 144 notice reporting a proposed resale of 21,492 shares of Common Stock originally issued as vested Restricted Stock Units dated 12/15/2021. The filing lists Robert Gagnon as the seller and shows 20,103 shares sold in the past three months.

Insights

Securities Counsel

Form 144 is a resale notice; it documents a proposed sale of stock by an insider.

The filing lists a proposed sale of 21,492 shares of Common Stock tied to vested Restricted Stock Units dated 12/15/2021. It also reports 20,103 shares sold in the prior three months by the same seller.

Cash‑flow treatment and specific sale mechanics are not detailed in the excerpt; subsequent transaction reports will state execution details and proceeds.

Key Figures

Shares proposed for resale: 21,492 shares Shares sold in past three months: 20,103 shares Vesting date: 12/15/2021 +3 more

6 metrics

Shares proposed for resale 21,492 shares listed in Securities To Be Sold section

Shares sold in past three months 20,103 shares Securities Sold During The Past 3 Months

Vesting date 12/15/2021 Vested Restricted Stock Units date

Seller name Robert Gagnon Listed as reporting seller with address

Amount shown (securities to be sold) $90,481.32 numeric field adjacent to Securities To Be Sold in excerpt

Amount shown (past 3 months) $84,835.67 numeric field adjacent to Securities Sold During The Past 3 Months

Key Terms

Form 144, Restricted Stock Units, Securities To Be Sold

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Units financial

"Vested Restricted Stock Units dated 12/15/2021"

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.

Securities To Be Sold regulatory

"144: Securities To Be Sold"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Verastem's Form 144 report about the number of shares being offered (VSTM)?

The Form 144 reports a proposed resale of 21,492 shares of Common Stock. The shares are identified as issued under vested Restricted Stock Units dated 12/15/2021.

Who is the reporting seller on the Verastem (VSTM) Form 144?

Robert Gagnon is listed as the reporting seller with an address at 117 Kendrick St Suite 500, Needham MA 02494 in the filing excerpt supplied.

Does the Form 144 show recent sales by the same seller for Verastem (VSTM)?

Yes; the filing shows 20,103 shares were sold during the past three months, with an associated figure of 84835.67 shown in the excerpt for that period.

Are the shares tied to a specific award or grant in the Verastem (VSTM) filing?

The filing links the shares to Vested Restricted Stock Units with a vesting date of 12/15/2021, as stated in the securities information section of the excerpt.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001504983
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Verastem, Inc.
SEC File Number	001-35403
Address of Issuer	117 KENDRICK STREET SUITE 500 NEEDHAM MASSACHUSETTS 02494
Phone	(781) 292-4200
Name of Person for Whose Account the Securities are To Be Sold	Gagnon Robert E.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Jefferies LLC 520 Madison Ave 4th Fl New York NY 10022	21492	90481.32	87870000	06/25/2026	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	12/15/2021	Vested Restricted Stock Units	Verastem Inc.			21492	12/15/2021	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Robert Gagnon 117 Kendrick St Suite 500 Needham MA 02494	Verastem Inc.	05/27/2026	20103	84835.67

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 12/15/2021 through 5/31/2026.
Date of Notice	06/25/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Robert Gagnon
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)