Form 4: IGM Biosciences Chief Business Officer Sells Shares for Tax Obligations

Lisa Lynn Decker, Chief Business Officer of IGM Biosciences, Inc., sold 951 shares of common stock to cover tax withholding obligations related to restricted stock unit vesting.

Summary

• Lisa Lynn Decker, the Chief Business Officer of IGM Biosciences, Inc. (IGMS), reported a transaction on June 16, 2025.
• The transaction involved the sale of 951 shares of IGM Biosciences Common Stock.
• The shares were sold at a weighted average price of $1.1992 per share.
• The purpose of the sale was to cover tax withholding obligations associated with the vesting of restricted stock units.
• Following this transaction, Lisa Lynn Decker beneficially owns 72,578 shares of Common Stock directly.

Sentiment

Score: 5

Explanation: The sentiment is neutral as the transaction is a routine, non-discretionary sale for tax purposes, which typically does not reflect management's view on the company's prospects.

Future Outlook

The document does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction.

Management Comments

• "These shares were sold to cover tax withholding obligations in connection with the vesting of restricted stock units."

Industry Context

This Form 4 filing details a routine insider transaction for tax purposes, which is common across all industries when restricted stock units vest. It does not provide insights into broader industry trends or competitive positioning for IGM Biosciences.

Stakeholder Impact

• Shareholders: Minimal direct impact as this is a routine, non-discretionary sale for tax purposes and does not indicate a change in the executive's confidence or a significant reduction in their overall holdings.

Key Dates

Keywords

IGM Biosciences, IGMS, Form 4, Insider Transaction, Stock Sale, Tax Withholding, Restricted Stock Units, Chief Business Officer, Lisa Lynn Decker