Annexon, Inc. — Director's Dealing 2025

Mar 3, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Annexon, Inc. (ANNX)
CIK: 0001528115
Period of Report: 2025-02-27

Reporting Person: ARTIS DEAN RICHARD (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-27	Common Stock	A	44963	—	Acquired	128777	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-27	Stock Option (Right to Buy)	$2.50	A	272575	Acquired	2034-02-27	Common Stock (272575)	Direct

Footnotes

F1: Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of Common Stock for each RSU upon vesting. 1/3rd of the RSUs vest annually on February 27 of each year, with the first 1/3rd vesting on February 27, 2026.

F2: 1/48th of the shares subject to the option vest on each monthly anniversary measured from February 27, 2025 (the "Vesting Commencement Date"), such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date.