Form 4: Verastem CFO Sells Shares for Tax Obligations

Verastem's Chief Financial Officer, Daniel Calkins, sold 80 shares of common stock to cover tax withholding requirements related to restricted stock unit vesting.

Summary

• Daniel Calkins, Chief Financial Officer of Verastem, Inc. (VSTM), reported a transaction on December 24, 2025.
• The transaction involved the sale of 80 shares of Verastem Common Stock at a price of $7.86 per share.
• The sale was executed to satisfy statutory withholding requirements in connection with the vesting of restricted stock units.
• Following this transaction, Daniel Calkins beneficially owns 109,758 shares of Verastem Common Stock.
• The transaction was made pursuant to a Rule 10b5-1(c) plan.

Sentiment

Score: 5

Explanation: The transaction is a routine sale of a small number of shares to cover tax obligations related to restricted stock unit vesting, which is a neutral event and does not indicate positive or negative sentiment towards the company's prospects.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This is a routine insider transaction for tax purposes, common across all industries when executives receive equity compensation that vests. It does not reflect broader industry trends or competitive positioning.

Stakeholder Impact

• Shareholders: Minimal to no direct impact due to the small volume and routine nature of the transaction.
• Employees: No direct impact mentioned.

Key Dates

Keywords

Verastem, VSTM, insider transaction, Form 4, stock sale, CFO, restricted stock units, tax withholding