Firefly Aerospace Inc.

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-14 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Firefly Aerospace Inc. (FLY) CIK: 0001860160 --- Reporting Owner --- Name: Boland Ryan Michael CIK: 0002078086 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-08-14 | Code: J (Other acquisition/disposition) Shares: -40,821 Shares Owned After: 0 | Ownership: I (Indirect) | Nature: See footnote Footnotes: [F1] Represents shares of common stock distributed by Mars Technology Holdings LLC ("Mars") on a pro rata basis to its limited partners, including 3,193 shares to the Ryan M. Boland Revocable Trust. [F1] Represents shares of common stock distributed by Mars Technology Holdings LLC ("Mars") on a pro rata basis to its limited partners, including 3,193 shares to the Ryan M. Boland Revocable Trust. [F2] The reporting person exercised voting and dispositive control over the shares of common stock previously held by Mars. [Transaction #2] Security: Common Stock Date: 2026-08-14 | Code: J (Other acquisition/disposition) Shares: +3,193 Shares Owned After: 127,156 | Ownership: I (Indirect) | Nature: See footnote Footnotes: [F1] Represents shares of common stock distributed by Mars Technology Holdings LLC ("Mars") on a pro rata basis to its limited partners, including 3,193 shares to the Ryan M. Boland Revocable Trust. [F1] Represents shares of common stock distributed by Mars Technology Holdings LLC ("Mars") on a pro rata basis to its limited partners, including 3,193 shares to the Ryan M. Boland Revocable Trust. [F3] Includes 85 shares received in a pro rata distribution exempt from reporting under Rule 16a-9. [F4] These shares are held directly by the Ryan M. Boland Revocable Trust for which the reporting person serves as trustee. The reporting person may be deemed to have beneficial ownership of the shares held by the trust. --- Holdings --- [Holding #1] Security: Common Stock Ownership: D (Direct) Footnotes: [F5] A portion of these securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. --- Footnotes (Complete Index) --- F1: Represents shares of common stock distributed by Mars Technology Holdings LLC ("Mars") on a pro rata basis to its limited partners, including 3,193 shares to the Ryan M. Boland Revocable Trust. F2: The reporting person exercised voting and dispositive control over the shares of common stock previously held by Mars. F3: Includes 85 shares received in a pro rata distribution exempt from reporting under Rule 16a-9. F4: These shares are held directly by the Ryan M. Boland Revocable Trust for which the reporting person serves as trustee. The reporting person may be deemed to have beneficial ownership of the shares held by the trust. F5: A portion of these securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. --- Signature --- /s/ /s/ Nathan O'Konek, Attorney-in-fact (2026-08-18)