Director at Firefly Aerospace (FLY) receives 3,630 RSUs vesting in 2027

Rhea-AI Filing Summary

Zurbuchen Thomas Hansueli reported acquisition or exercise transactions in this Form 4 filing.

Firefly Aerospace Inc. director Thomas Hansueli Zurbuchen received a grant of 3,630 shares of Common Stock in the form of restricted stock units. The grant was made at a price of $0.00 per share as equity compensation.

The RSUs were awarded under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan and will vest on June 4, 2027, if he continues to provide service to the company through that date. After this award, his direct holdings reported in this filing total 7,764 shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Zurbuchen Thomas Hansueli

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	3,630	$0.00	--

Holdings After Transaction: Common Stock — 7,764 shares (Direct, null)

Footnotes (1)

1. Represents restricted stock units ("RSUs") granted under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan. The RSUs vest on June 4, 2027, subject to the reporting person's continued service to the Issuer through the vesting date. A portion of these securities are RSUs. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Key Figures

RSUs granted: 3,630 shares Grant price: $0.00 per share Holdings after grant: 7,764 shares +1 more

4 metrics

RSUs granted 3,630 shares Restricted stock units granted on June 4, 2026

Grant price $0.00 per share Equity compensation, not an open-market purchase

Holdings after grant 7,764 shares Total direct holdings following the reported transaction

Vesting date June 4, 2027 RSUs vest subject to continued service through this date

Key Terms

restricted stock units ("RSUs"), 2025 Omnibus Incentive Plan, contingent right

3 terms

restricted stock units ("RSUs") financial

"Represents restricted stock units ("RSUs") granted under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan."

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.

2025 Omnibus Incentive Plan financial

"granted under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan."

An omnibus incentive plan is a company-wide program that authorizes awards of pay tied to performance and retention—such as stock options, restricted shares, cash bonuses and other rewards—here labeled for the year it was adopted (2025). Investors care because it affects how much ownership can be issued, dilutes existing shareholders, and aligns executives’ and employees’ incentives with company goals, similar to giving team members a stake in the outcome.

contingent right financial

"Each RSU represents a contingent right to receive one share of the Issuer's common stock."

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Form 4 Insider Transactions: What Each Field Means →

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^*

Zurbuchen Thomas Hansueli

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026

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	06/04/2026		A		3,630(1)	A	$0	7,764(2)	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. The RSUs vest on June 4, 2027, subject to the reporting person's continued service to the Issuer through the vesting date.

2. A portion of these securities are RSUs. Each RSU represents a contingent right to receive one share of the Issuer's common stock.

	/s/ David Wheeler, Attorney-in-fact	06/08/2026
	** 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)

FAQ

What did Firefly Aerospace (FLY) report in this Form 4 filing?

The filing shows director Thomas Hansueli Zurbuchen received 3,630 restricted stock units as equity compensation. These RSUs are a form of stock-based pay, granted at no cash cost, and increase his direct reported holdings to 7,764 shares of common stock.

How many Firefly Aerospace (FLY) shares were granted to the director?

The director was granted 3,630 restricted stock units, each representing one share of common stock. This award is reported at a price of $0.00 per share, reflecting a compensation grant rather than a market purchase, and raises his total direct holdings to 7,764 shares.

When do the newly granted RSUs for Firefly Aerospace (FLY) vest?

The 3,630 restricted stock units are scheduled to vest on June 4, 2027. Vesting is conditioned on the director’s continued service to Firefly Aerospace through that date, meaning the shares are earned over time rather than immediately transferable or fully owned today.

What plan governs the RSU grant reported by Firefly Aerospace (FLY)?

The RSU grant was made under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan. This plan authorizes stock-based awards like restricted stock units to directors and employees, aligning their compensation with the company’s equity and long-term performance objectives.

Are the RSUs in the Firefly Aerospace (FLY) filing equivalent to common shares?

Each restricted stock unit represents a contingent right to receive one share of Firefly Aerospace common stock. The units convert into actual shares only upon vesting, so they function as promised future equity rather than currently tradable common stock.