Firefly Aerospace Inc.

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-24 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Firefly Aerospace Inc. (FLY) CIK: 0001860160 --- Reporting Owner --- Name: Ma Darren CIK: 0001624120 Role: Officer (Chief Financial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-08-24 | Code: F (Payment of exercise/tax) Shares: -256 | Price: $23.10 Total Value: $5,913.60 Shares Owned After: 260,687 | Ownership: D (Direct) Footnotes: [F1] Represents shares of common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the vesting of restricted stock units. [Transaction #2] Security: Common Stock Date: 2026-09-16 | Code: F (Payment of exercise/tax) Shares: -18,309 | Price: $20.28 Total Value: $371,306.52 Shares Owned After: 242,378 | Ownership: D (Direct) Footnotes: [F1] Represents shares of common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the vesting of restricted stock units. [Transaction #3] Security: Common Stock Date: 2026-09-17 | Code: M (Exercise of derivative) Shares: +54,286 | Price: $0.42 Total Value: $22,968.41 Shares Owned After: 296,664 | Ownership: D (Direct) [Transaction #4] Security: Common Stock Date: 2026-09-17 | Code: M (Exercise of derivative) Shares: +33,233 | Price: $0.49 Total Value: $16,224.35 Shares Owned After: 329,897 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Employee Stock Option (right to buy) Date: 2026-09-17 | Code: M (Exercise of derivative) Shares: -54,286 | Price: $0.00 Exercise Price: $0.42 Exercisable: N/A | Expires: 2030-08-05 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] All of the shares subject to the option are fully vested and exercisable as of the date hereof. [Transaction #2] Security: Employee Stock Option (right to buy) Date: 2026-09-17 | Code: M (Exercise of derivative) Shares: -33,233 | Price: $0.00 Exercise Price: $0.45 Exercisable: N/A | Expires: 2031-01-07 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] All of the shares subject to the option are fully vested and exercisable as of the date hereof. --- Footnotes (Complete Index) --- F1: Represents shares of common stock withheld by the Issuer to cover the reporting person's tax withholding obligation upon the vesting of restricted stock units. F2: All of the shares subject to the option are fully vested and exercisable as of the date hereof. --- Signature --- /s/ /s/ Nathan O'Konek, Attorney-in-fact (2026-09-18)