Firefly Aerospace director granted 3,630 RSUs

Emerson Christopher Plummer IV reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Emerson Christopher Plummer IV reported acquisition or exercise transactions in this Form 4 filing.

Firefly Aerospace Inc. director Emerson Christopher Plummer IV received an equity award in the form of 3,630 restricted stock units (RSUs) of common stock on June 4, 2026, as a compensation grant.

The RSUs were granted under the Firefly Aerospace Inc. 2025 Omnibus Incentive Plan and vest on June 4, 2027, provided he continues to serve the company through that date. Each RSU represents a contingent right to receive one share of common stock. Following this award, he holds 6,964 shares of common stock directly.

Insider Trade Summary

Grant/Award: 3,630 shares

Grant/Award 1 txn

Insider Emerson Christopher Plummer IV

Role Director

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

Holdings After Transaction: Common Stock — 6,964 shares (Direct)

Footnotes (2)

1. F1. 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. F2. 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 Price per RSU: $0.0000 per share Post-grant holdings: 6,964 shares +1 more

4 metrics

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

Price per RSU $0.0000 per share Grant price for awarded RSUs

Post-grant holdings 6,964 shares Total common stock held directly after transaction

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

Key Terms

restricted stock units, 2025 Omnibus Incentive Plan, vesting, contingent right

4 terms

restricted stock units financial

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

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2025 Omnibus Incentive Plan financial

"RSUs 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.

vesting financial

"The RSUs vest on June 4, 2027, subject to the reporting person's continued service."

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

contingent right financial

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

FAQ

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

What did Firefly Aerospace (FLY) disclose about Emerson Christopher Plummer IV in this Form 4?

Firefly Aerospace disclosed that director Emerson Christopher Plummer IV received 3,630 restricted stock units of common stock as an equity award. The grant was made under the company’s 2025 Omnibus Incentive Plan and is part of his compensation for serving on the board.

How many Firefly Aerospace (FLY) shares does Emerson Christopher Plummer IV hold after this RSU grant?

After the RSU grant, Emerson Christopher Plummer IV holds 6,964 shares of Firefly Aerospace common stock directly. This total reflects his position following the award of 3,630 restricted stock units reported in the Form 4 insider filing.

When do Emerson Christopher Plummer IV’s Firefly Aerospace (FLY) RSUs vest?

The restricted stock units granted to Emerson Christopher Plummer IV vest on June 4, 2027. Vesting is conditioned on his continued service to Firefly Aerospace through that date, meaning he must remain with the company until then to receive the underlying shares.

What is the nature of the equity award reported for Firefly Aerospace (FLY) director Emerson Christopher Plummer IV?

The equity award consists of 3,630 restricted stock units, each representing a contingent right to receive one share of Firefly Aerospace common stock. The RSUs were granted at no cash cost per unit under the company’s 2025 Omnibus Incentive Plan.

Does the Form 4 for Firefly Aerospace (FLY) show a stock purchase or sale by Emerson Christopher Plummer IV?

The Form 4 does not show an open-market purchase or sale; it reports a grant of 3,630 restricted stock units. This is a compensation-related acquisition rather than a buy or sell transaction in the market for Firefly Aerospace shares.

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

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Accepted by SEC EDGAR 06/08/2026 - 08:36 AM 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^*

Emerson Christopher Plummer IV

(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	6,964(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)