Form 4 Filing for Annexon, Inc. - Stock Option Grant

This filing details a Form 4 submission for Annexon, Inc. (ANNX), reporting a stock option grant to director William H. Carson. The grant includes 65,000 stock options with a right to buy at a price of $4.70 per share, exercisable upon vesting. The underlying securities are 65,000 shares of Common Stock. The options vest over time, with full vesting occurring on the first anniversary of June 11, 2026, or the next Annual Meeting, provided Mr. Carson remains a director. The transaction date was June 11, 2026, and the filing was signed on June 15, 2026.