Form 4 Filing for Annexon, Inc. - Officer Stock Transaction

Ted Yednock, EVP & CHIEF INNOVATION OFFICER at Annexon, Inc., reported a transaction on June 11, 2026. Yednock exercised a stock option to acquire 30,646 shares of Common Stock at a price of $0.00 per share. Concurrently, Yednock disposed of these 30,646 shares at a price of $1.8501 per share. Following these transactions, Yednock directly owns 184,807 shares of Annexon, Inc. Common Stock. The stock option was fully vested and exercisable, with an exercise price of $1.8501 and an expiration date of August 11, 2026. The filing was signed by Jennifer Lew, Attorney-in-Fact, on June 15, 2026.