Verastem Insider Daniel Calkins Files Form 4 on Ownership Change

TL;DR

**Verastem insider Daniel Calkins just filed a Form 4, signaling a change in his stock ownership.**

AI Summary

This Form 4 filing, dated March 23, 2026, indicates that Daniel Calkins, an insider at Verastem, Inc. (NASDAQ: VSTM), has filed a statement of changes in beneficial ownership of securities. While the filing itself doesn't detail specific transactions, it signals that Calkins' ownership stake in Verastem has changed. This matters to investors because insider transactions can provide insights into how company executives view the stock's future prospects, potentially influencing their investment decisions.

Why It Matters

Insider filings like this can signal management's confidence (or lack thereof) in the company's future, which can influence investor sentiment and stock price.

Risk Assessment

Risk Level: low — This filing is purely informational and does not inherently pose a direct risk, but rather provides data for analysis.

Analyst Insight

An investor should monitor subsequent filings or news to understand the nature of Daniel Calkins' ownership change (e.g., a buy or sell) and consider it alongside other fundamental and technical analysis for Verastem, Inc.

Key Players & Entities

• Calkins Daniel (person) — Reporting insider at Verastem, Inc.
• Verastem, Inc. (company) — The issuer of the securities
• 0001951861 (person) — CIK for Calkins Daniel
• 0001526119 (company) — CIK for Verastem, Inc.
• 2026-03-23 (date) — Filing Date

FAQ

Filing Documents

• tm269583-1_4seq1.html (4)
• tm269583-1_4seq1.xml (4) — 3KB
• 0001104659-26-033407.txt ( ) — 5KB

From the Filing

SEC FORM 4 SEC Form 4 FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 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 * Calkins Daniel (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) Director 10% Owner X Officer (give title below) Other (specify below) Chief Financial Officer 2a. Foreign Trading Symbol 3. Date of Earliest Transaction (Month/Day/Year) 03/20/2026 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 03/20/2026 A 57 (1) D $ 5.74 121,327 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 03/23/2026 ** 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)

View Full Filing

View this 4 filing on SEC EDGAR