Form 4: Immunome CEO Buys Shares, Gifts Large Block to Trust

Immunome Inc.'s President and CEO, Clay B. Siegall, acquired 7,278 shares of common stock while gifting 200,000 shares to a grantor retained annuity trust.

Summary

• Clay B. Siegall, President and CEO, Director, and 10% Owner of Immunome Inc. (IMNM), reported transactions on December 19, 2025.
• Siegall purchased 7,278 shares of Immunome common stock at a weighted average price of $20.48 per share, with prices ranging from $20.36 to $20.50.
• Siegall gifted 200,000 shares of Immunome common stock to the Clay B. Siegall 2025 Grantor Retained Annuity Trust, where his children are beneficiaries and his brother is the trustee.
• The gifted shares were valued at $0 for the transaction and are subject to a lock-up agreement entered into on December 15, 2025, which the transferee has agreed to honor.
• Following these transactions, Siegall directly beneficially owns 660,525 shares of Immunome common stock.

Sentiment

Score: 6

Explanation: The sentiment is moderately positive due to the insider purchase, which signals confidence. However, the large gift, while for estate planning, reduces direct beneficial ownership, creating a mixed signal. The net effect on direct ownership is a decrease.

Positives

• The President and CEO's open market purchase of 7,278 shares at $20.48 indicates a direct investment and potential confidence in the company's current valuation.

Negatives

• The disposition of 200,000 shares, although a gift for estate planning purposes, reduces the direct beneficial ownership of the CEO by a significant amount.

Risks

• The 200,000 shares gifted are subject to a lock-up agreement dated December 15, 2025, which restricts their sale for a specified period, potentially limiting liquidity for the transferee.

Future Outlook

NA

Industry Context

This filing is an insider transaction report and does not provide information related to broader industry trends or competitive landscape.

Related Party Transactions

• The gift of 200,000 shares to the Clay B. Siegall 2025 Grantor Retained Annuity Trust, where the Reporting Person's children are beneficiaries and his brother is the trustee, constitutes a related party transaction.

Stakeholder Impact

• Shareholders: The CEO's purchase of shares could be viewed as a positive signal of management's confidence in the company's future. The gift reduces the CEO's direct beneficial ownership, but the shares remain subject to a lock-up agreement.

Key Dates

Keywords

Immunome Inc., IMNM, Clay B. Siegall, Insider Trading, Form 4, Stock Purchase, Stock Gift, CEO, Beneficial Ownership, Lock-Up Agreement