Larry Mattheakis - Jul 11, 2022 Form 4 Insider Report for Annexon, Inc. (ANNX)

Role: EVP & Chief Scientific Officer
Signature: /s/ Jennifer Lew, as Attorney-in-Fact for Larry Mattheakis
Stock symbol: ANNX
Transactions as of: Jul 11, 2022
Transactions value $: $0
Form type: 4
Date filed: 7/13/2022, 07:40 PM
Previous filing: Feb 15, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ANNX	Common Stock	Award	$0	+4.69K	+37.5%	$0.00	17.2K	Jul 11, 2022	Direct	F1, F2

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	+37.5K		$0.00	37.5K	Jul 11, 2022	Common Stock	37.5K	$3.91	Direct	F3

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

Explanation of Responses:

Id	Content
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 July 11th of each year, with the first 1/3rd vesting on July 11, 2023.
F2	Includes 17,188 RSUs.
F3	1/36th of the shares subject to the option vest on each monthly anniversary measured from July 11, 2022 (the "Vesting Commencement Date"), such that 100% of the shares subject to the option will be fully vested and exercisable on the third anniversary of the Vesting Commencement Date.