Firefly Aerospace CTO receives RSU equity grant

Ferring Russell Shea reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Ferring Russell Shea reported acquisition or exercise transactions in this Form 4 filing.

Firefly Aerospace Inc. Chief Technology Officer Russell Shea reported an equity compensation grant in the form of 15,756 shares of Common Stock, represented by restricted stock units under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan. After this award, he holds 542,124 shares directly.

One-third of the RSUs vest on the one-year anniversary of the grant date, with the remaining units vesting in equal quarterly installments over the following two years, so the award is fully vested by the third anniversary, subject to his continued employment with the company.

Insider Trade Summary

Grant/Award: 15,756 shares

Grant/Award 1 txn

Insider Ferring Russell Shea

Role Chief Technology Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	15,756	$0.00	$0.00

Holdings After Transaction: Common Stock — 542,124 shares (Direct)

Footnotes (1)

1. F1. Represents restricted stock units ("RSUs") granted under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan. One-third of the RSUs vest at the one-year anniversary of the grant date, and 1/12 of the RSUs vest quarterly thereafter (such that the RSUs will be fully vested at the third anniversary of the grant date), subject in each case to the reporting person's continued employment with the Issuer through the respective vesting date.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Firefly Aerospace (FLY) report for Russell Shea?

Firefly Aerospace reported that Chief Technology Officer Russell Shea received 15,756 restricted stock units of Common Stock as an equity compensation grant. The award came with no cash purchase price and increases his directly held position to 542,124 shares after the transaction.

How many Firefly Aerospace (FLY) shares does Russell Shea hold after this Form 4?

Following the reported grant, Chief Technology Officer Russell Shea holds 542,124 shares of Firefly Aerospace Common Stock directly. This total includes the 15,756 restricted stock units awarded under the company’s 2025 Omnibus Incentive Plan, subject to the vesting schedule described.

What type of equity award did Firefly Aerospace (FLY) grant to its CTO?

Firefly Aerospace granted its Chief Technology Officer restricted stock units representing 15,756 shares of Common Stock. These RSUs were issued under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan as a compensation-related award rather than an open-market purchase or sale transaction.

What is the vesting schedule for Russell Shea’s RSUs at Firefly Aerospace (FLY)?

One-third of Russell Shea’s restricted stock units vest on the one-year anniversary of the grant date. The remaining two-thirds vest in equal quarterly installments over the next two years, so the award is fully vested at the third anniversary, subject to continued employment.

Did Russell Shea buy or sell Firefly Aerospace (FLY) shares for cash in this filing?

The filing shows no open-market buying or selling for cash by Russell Shea. Instead, he acquired 15,756 shares through a compensatory grant of restricted stock units at a stated price of $0.00 per share, reflecting a non-cash equity award.

Is Russell Shea’s ownership in Firefly Aerospace (FLY) direct or indirect after the grant?

The Form 4 indicates that Russell Shea’s 542,124 Firefly Aerospace shares, including the new RSU grant, are held as direct ownership. No trusts, partnerships, or other indirect holding entities are referenced in connection with this particular transaction.

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

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Accepted by SEC EDGAR 03/12/2026 - 04:30 PM EDT Learn about SEC filing dates

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^*

Ferring Russell Shea

(Last) (First) (Middle)

C/O FIREFLY AEROSPACE INC.

1320 ARROW POINT DRIVE #109

(Street)

CEDAR PARK TX 78613

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Firefly Aerospace Inc. [ FLY ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

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

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

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

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	03/10/2026		A		15,756(1)	A	$0	542,124	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 restricted stock units ("RSUs") granted under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan. One-third of the RSUs vest at the one-year anniversary of the grant date, and 1/12 of the RSUs vest quarterly thereafter (such that the RSUs will be fully vested at the third anniversary of the grant date), subject in each case to the reporting person's continued employment with the Issuer through the respective vesting date.

	/s/ David Wheeler, Attorney-in-fact	03/12/2026
	** 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.