Verastem insider plans sale of 5,039 shares

Verastem, Inc. (VSTM) insider Daniel Calkins has filed notice of a planned stock sale under Rule 144.

Rhea-AI Filing Summary

Verastem, Inc. (VSTM) insider Daniel Calkins has filed notice of a planned stock sale under Rule 144. The filing covers up to 5,039 shares of Verastem common stock to be sold through Shareworks by Morgan Stanley on or about 01/12/2026 on the NASDAQ, with an aggregate market value of $36,069.00. The filing notes that 66,776,006 shares of Verastem common stock were outstanding.

The 5,039 shares to be sold were acquired on 01/10/2025 through the vesting of a restricted stock unit award from Verastem, Inc. For additional context, during the past three months Daniel Calkins sold 80 Verastem shares on 12/24/2025 for gross proceeds of $628.80.

FAQ

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

What does the Form 144 filing for Verastem (VSTM) disclose?

The filing discloses that Daniel Calkins intends to sell up to 5,039 shares of Verastem common stock under Rule 144 through Shareworks by Morgan Stanley on or about 01/12/2026 on the NASDAQ.

How many Verastem (VSTM) shares are covered by this planned Rule 144 sale?

The notice covers up to 5,039 shares of Verastem, Inc. common stock, with an indicated aggregate market value of $36,069.00.

How did the seller acquire the Verastem (VSTM) shares being sold?

The 5,039 shares were acquired on 01/10/2025 through the vesting of a restricted stock unit award from Verastem, Inc.

Were there other recent Verastem (VSTM) stock sales by this person?

Yes. Over the past three months, Daniel Calkins sold 80 shares of Verastem, Inc. on 12/24/2025 for gross proceeds of $628.80.

How many Verastem (VSTM) shares were outstanding according to the filing?

The filing reports that 66,776,006 shares of Verastem, Inc. common stock were outstanding.

On which exchange and through which broker are the Verastem (VSTM) shares expected to be sold?

The shares are expected to be sold on the NASDAQ through Shareworks by Morgan Stanley, located in Calgary.

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

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Accepted by SEC EDGAR 01/14/2026 - 05:15 PM Learn about SEC filing dates

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	0001951861
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	Dan Paterson
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	Officer

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	Shareworks by Morgan Stanley 600 - 3 Avenue SW Suite 1500 Calgary A0 T2P0G5	5039	36069.00	66776006	01/12/2026	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	01/10/2025	Vesting of restricted stock unit award	Verastem, Inc.			5039	01/10/2025	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
Daniel Calkins 117 Kendrick Street Suite 500 Needham MA 02494	Verastem, Inc.	12/24/2025	80	628.80

144: Remarks and Signature

Remarks	Shares to be sold to cover withholding taxes upon vesting of restricted stock unit awards
Date of Notice	01/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	01/12/2025
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	/s/ Daniel Calkins
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)