Adam K. Simpson - 01 Aug 2023 Form 4 Insider Report for Icosavax, Inc.

Role: Chief Executive Officer, Director
Signature: /s/ Elizabeth Bekiroglu, Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 01 Aug 2023
Net transactions value: +$2,520
Form type: 4
Filing time: 01 Aug 2023, 20:54:27 UTC
Previous filing: 01 Aug 2023
Next filing: 22 Dec 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ICVX	Common Stock	Options Exercise	$2,520	+3,000	+1.2%	$0.8400^*	246,930	01 Aug 2023	Direct
holding	ICVX	Common Stock						531,576	01 Aug 2023	By family trust
holding	ICVX	Common Stock						129,032	01 Aug 2023	By family trust
holding	ICVX	Common Stock						129,032	01 Aug 2023	By family trust

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	ICVX	Stock Option (Right to Buy)	Options Exercise	$0	-3,000	-9.6%	$0.000000	28,132	01 Aug 2023	Common Stock	3,000	$0.8400	Direct	F1

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

Explanation of Responses:

Id	Content
F1	25% of the shares subject to the option vested on 2/21/2021, and 1/48th of the shares subject to the option vest monthly thereafter.