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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

## FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 12, 2025

Firefly Aerospace Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware | 001-42789 | 81-5194980
(State or Other Jurisdiction of Incorporation) | (Commission File Number) | (IRS Employer Identification No.)
1320 Arrow Point Drive, #109 |
Cedar Park, Texas |  | 78613
(Address of Principal Executive Offices) |  | (Zip Code)

Registrant’s Telephone Number, Including Area Code: 512 893-5570

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class |  | Trading Symbol(s) |  | Name of each exchange on which registered
Common stock, par value $0.0001 per share |  | FLY |  | The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

## Item 2.02 Results of Operations and Financial Condition.

On November 12, 2025, Firefly Aerospace Inc. (the “Company”) issued a press release announcing its financial results for the third quarter ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The Company is hosting a conference call on November 12, 2025, to discuss its third quarter 2025 financial and operating results, during which the Company will provide an update on the business.

The Company is making reference to financial measures not presented in accordance with U.S. generally accepted accounting principles (“GAAP”) in the Press Release, an investor presentation concerning its third quarter 2025 financial and operating results (the “Investor Presentation”), and a conference call. A reconciliation of these non-GAAP financial measures to the nearest comparable GAAP financial measures is contained in the Press Release. The Company believes these non-GAAP financial measures provide useful information to investors because they allow for a more direct comparison of its third quarter 2025 performance to its performance in the comparable prior-year period. The non-GAAP financial measures are provided in addition to, and not as an alternative to, the Company’s reported results prepared in accordance with GAAP.

The information in this Item 2.02, including Exhibit 99.1, is being furnished and shall not be deemed “filed” for purposes of Section 18 (the “Section”) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference into any registration statement or other filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

## Item 7.01 Regulation FD Disclosure

In conjunction with the Press Release, the Company also made available the Investor Presentation. The Investor Presentation, which is available under the “Investor Relations” section of the Company’s corporate website, located at investors.fireflyspace.com, is included as Exhibit 99.2 to this Current Report on Form 8-K, which, in its entirety, is incorporated herein by reference. Information on the Company’s corporate website is not, and will not be deemed to be, a part of this Current Report on Form 8-K or incorporated into any other filings the Company may make with the U.S. Securities and Exchange Commission.

The information contained in Item 7.01 of this Current Report on Form 8-K, including Exhibits 99.1 and 99.2, shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, and shall not be deemed incorporated by reference into any filing under the Securities Act, or the Exchange Act, except as expressly set forth by specific reference in such filing.

## Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number |  | Description

99.1 |  | Press Release of Firefly Aerospace Inc. dated November 12, 2025.
99.2 |  | Investor Presentation dated November 12, 2025.
104 |  | Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

|  |  | FIREFLY AEROSPACE INC.
Date: | November 12, 2025 | By: | /s/ Jason Kim
|  |  | Chief Executive Officer

Date: | November 12, 2025 | By: | /s/ Darren Ma
|  |  | Chief Financial Officer