ATOS (ATOS) director Stephen Galli receives 10,000 RSU equity grant

Rhea-AI Filing Summary

Galli Stephen J reported acquisition or exercise transactions in this Form 4 filing.

ATOSSA THERAPEUTICS, INC. director Stephen J. Galli received an award of 10,000 shares of Common Stock in the form of restricted stock units (RSUs) on May 12, 2026. After this grant, he holds 10,006 shares directly. Each RSU represents a contingent right to receive one share of Common Stock and will vest on the first anniversary of May 12, 2026.

Insider Trade Summary

Net Buyer: 10,000 shares

Net Buy 1 txn

Insider Galli Stephen J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	10,000	$0.00	$0.00

Holdings After Transaction: Common Stock — 10,006 shares (Direct)

Footnotes (1)

1. F1. Represents a grant of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. The RSUs shall vest on the first anniversary of May 12, 2026.

Key Figures

RSU grant size: 10,000 shares Post-transaction holdings: 10,006 shares Transaction code: A (Grant, award, or other acquisition) +1 more

4 metrics

RSU grant size 10,000 shares Restricted stock units granted on May 12, 2026

Post-transaction holdings 10,006 shares Common Stock directly owned after RSU grant

Transaction code A (Grant, award, or other acquisition) Indicates non-market equity award

Reported transaction price $0.0000 per share RSU grant, not a cash market purchase

Key Terms

restricted stock units ("RSUs"), contingent right, vest, Common Stock

4 terms

restricted stock units ("RSUs") financial

"Represents a grant of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

contingent right financial

"Each RSU represents a contingent right to receive one share of the Issuer's Common Stock"

vest financial

"The RSUs shall vest on the first anniversary of May 12, 2026"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Common Stock financial

"Each RSU represents a contingent right to receive one share of the Issuer's Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 05/14/2026 - 04:25 PM Learn about SEC filing dates

FAQ

What insider transaction did ATOS director Stephen J. Galli report on this Form 4?

Stephen J. Galli reported receiving an equity award of 10,000 restricted stock units in ATOSSA THERAPEUTICS, INC. Each RSU represents a right to receive one share of Common Stock, reflecting routine director compensation rather than an open-market stock purchase or sale.

How many ATOS shares does Stephen J. Galli hold after this RSU grant?

After the reported grant, Stephen J. Galli holds 10,006 shares of ATOS Common Stock directly. This figure includes the effect of the 10,000-share restricted stock unit award reported in the filing, as disclosed in the post-transaction ownership column.

When do Stephen J. Galli’s ATOS restricted stock units vest?

The filing states that the restricted stock units granted to Stephen J. Galli will vest on the first anniversary of May 12, 2026. Vesting means the RSUs convert into shares of Common Stock if the specified time-based condition is satisfied.

Did Stephen J. Galli buy or sell ATOS shares on the market in this Form 4?

No market purchase or sale is reported; the Form 4 shows a grant classified as a “Grant, award, or other acquisition.” The 10,000 shares are issued as restricted stock units, typically part of non-cash director compensation.

What does the zero price per share mean in Stephen J. Galli’s ATOS Form 4?

The transaction price per share is reported as 0.0000 because the 10,000 shares were granted as restricted stock units, not bought for cash in the market. This reflects an equity award rather than a purchase at a set share price.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Galli Stephen J

(Last) (First) (Middle)

C/O ATOSSA THERAPEUTICS, INC.

1448 NW MARKET STREET SUITE 500

(Street)

SEATTLE WASHINGTON 98107

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ATOSSA THERAPEUTICS, INC. [ ATOS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/12/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/12/2026		A		10,000(1)	A	$0	10,006	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents a grant of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. The RSUs shall vest on the first anniversary of May 12, 2026.

	Stephen J. Galli	05/14/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)