Muneer A. Satter - 05 Jun 2025 Form 4 Insider Report for Annexon, Inc. (ANNX)

Role: Director, 10%+ Owner
Signature: /s/ Jennifer Lew, Attorney-in-Fact
Issuer symbol: ANNX
Transactions as of: 05 Jun 2025
Transactions value $: $0
Form type: 4
Filing time: 09 Jun 2025, 16:27:12 UTC
Previous filing: 07 Jun 2024
Next filing: 19 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Satter Muneer A	Director, 10%+ Owner	C/O ANNEXON, INC., 1400 SIERRA POINT PKWY, BLDG C, STE 200, BRISBANE	/s/ Jennifer Lew, Attorney-in-Fact	09 Jun 2025	0001315797

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ANNX	Stock Option (Right to Buy)	Award	$0	+55,000		$0	55,000	05 Jun 2025	Common Stock	55,000	$2.55	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The underlying shares subject to the option vest and become exercisable as to 100% of the total number of shares subject to the option on the earlier of (i) the first anniversary of June 5, 2025 or (ii) the next Annual Meeting following June 5, 2025, subject to Reporting Person's continuous service as a director until such vesting date.