Heather Rees - May 15, 2025 Form 4 Insider Report for ATOSSA THERAPEUTICS, INC. (ATOS)

Role: Chief Financial Officer
Signature: /s/ Heather Rees
Stock symbol: ATOS
Transactions as of: May 15, 2025
Transactions value $: $0
Form type: 4
Date filed: 5/16/2025, 04:05 PM
Previous filing: Jul 1, 2024
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Rees Heather	Chief Financial Officer	C/O ATOSSA THERAPEUTICS, INC.,, 10202 5TH AVENUE NE SUITE 200, SEATTLE	/s/ Heather Rees	2025-05-16	0001997454

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	ATOS	Stock Option (right to buy)	Award	$0	+544K		$0.00	544K	May 15, 2025	Common Stock	544K	$0.99	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The options shall vest on a quarterly basis over 24 months following May 15, 2025, subject to the Reporting Person's continued service to the Issuer through each applicable vesting date. The options were issued on May 15, 2025, with an exercise price of $0.99, representing the closing stock price on May 15, 2025.