Firefly Aerospace CEO exercises options for 43,278 shares

The CEO's reported direct positions after the exercise were 898,738 common shares and options covering 588,462 shares.

Rhea-AI Filing Summary

Firefly Aerospace Inc. Chief Executive Officer and director Kim Jesung exercised options covering 43,278 shares on September 22, 2026, at an exercise price of $2.3106 per share, acquiring 43,278 common shares. After the transactions, he directly held 898,738 common shares and options covering 588,462 shares. The options were fully vested and exercisable as of September 22, 2026; no Rule 10b5-1 plan is reported.

Insider Trade Summary

43,278 shares exercised/converted

Exercise 2 txns

Insider Kim Jesung

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (right to buy) F1	43,278	$0.00	$0.00
Exercise	Common Stock	43,278	$2.3106	$100K

Holdings After Transaction: Employee Stock Option (right to buy) — 588,462 contracts (Direct); Common Stock — 898,738 shares (Direct)

Footnotes (1)

1. F1. All of the shares subject to the option are fully vested and exercisable as of the date hereof.

Key Figures

Common shares acquired: 43,278 shares Exercise price: $2.3106 per share Common shares following transaction: 898,738 shares +2 more

5 metrics

Common shares acquired 43,278 shares Through an option exercise on September 22, 2026

Exercise price $2.3106 per share Options exercised on September 22, 2026

Common shares following transaction 898,738 shares Direct holdings reported after the transaction

Options following transaction 588,462 shares Options reported after the exercise

Option expiration May 5, 2035 Expiration date of the reported option

Key Terms

Employee Stock Option (right to buy), fully vested, exercisable

3 terms

Employee Stock Option (right to buy) financial

"Employee Stock Option (right to buy)"

fully vested financial

"shares subject to the option are fully vested and exercisable"

exercisable financial

"fully vested and exercisable as of the date hereof"

FAQ

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How many FLY shares did CEO Kim Jesung acquire?

Kim Jesung acquired 43,278 common shares on September 22, 2026, through an option exercise at an exercise price of $2.3106 per share.

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

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Available on EDGAR 09/23/2026 - 05:13 PM Accepted by SEC EDGAR 09/23/2026 - 05:13 PM 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^*

Kim Jesung

(Last) (First) (Middle)

C/O FIREFLY AEROSPACE INC.

2203 SCOTTSDALE DRIVE

(Street)

LEANDER TEXAS 78641

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/22/2026

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	09/22/2026		M		43,278	A	$2.3106	898,738	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
Employee Stock Option (right to buy)	$2.3106	09/22/2026		M			43,278	(1)	05/05/2035	Common Stock	43,278	$0	588,462	D

Explanation of Responses:

1. All of the shares subject to the option are fully vested and exercisable as of the date hereof.

	/s/ Nathan O'Konek, Attorney-in-fact	09/23/2026
	** 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)