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

IGM Biosciences' Chief Business Officer, Lisa Lynn Decker, sold 4,409 shares of common stock to cover tax withholding obligations related to restricted stock unit vesting.

Summary

• Lisa Lynn Decker, Chief Business Officer of IGM Biosciences, Inc. (IGMS), executed a sale of common stock.
• The transaction occurred on July 23, 2025, and involved the disposition of 4,409 shares.
• The shares were sold at a weighted average price of $1.2728 per share, with individual trades ranging from $1.27 to $1.275.
• 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 directly beneficially owns 68,169 shares of common stock.
• The transaction was made pursuant to a Rule 10b5-1(c) pre-planned contract, instruction, or written plan.

Sentiment

Score: 5

Explanation: The transaction is a routine, non-discretionary sale to cover tax obligations related to RSU vesting, which is a neutral event and does not reflect management's sentiment on the company's prospects.

Future Outlook

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

Management Comments

• 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, non-discretionary transaction by a corporate officer, which is common across all industries when restricted stock units vest and tax obligations arise. It does not provide insights into broader industry trends or competitive landscape.

Stakeholder Impact

• The sale of a small number of shares for tax purposes by a Chief Business Officer is unlikely to have a material impact on shareholders, employees, customers, suppliers, or creditors.

Key Dates

Keywords

IGM Biosciences, IGMS, SEC Form 4, Insider Trading, Stock Sale, Restricted Stock Units, Tax Withholding, Chief Business Officer, Corporate Governance