As of November 8, 2026, 3 holders' latest Schedule 13D or 13G filings report owning 5% or more of Firefly Aerospace Inc. The largest reported stake is AeroEquity GP, LLC's, at 30.3%. 6 filings are on record since November 10, 2025 (Schedule 13G/A, August 14, 2026).
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Key facts
- · Reporting person: AeroEquity GP, LLC · Sole voting: 0 · Shared voting: 50,805,752 · Sole dispositive: 0 · Shared dispositive: 50,805,752 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: Markusic Thomas E · Sole voting: 8,581,146 · Shared voting: 235,374 · Sole dispositive: 8,581,146 · Shared dispositive: 235,374 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: Astera Institute · Sole voting: 0 · Shared voting: 11,338,168 · Sole dispositive: 0 · Shared dispositive: 11,338,168 · SCHEDULE 13G/A, 2026-08-11
- · Holder: AeroEquity GP, LLC · Percent: 36.9% · SCHEDULE 13G/A
- · Holder: AeroEquity GP, LLC · Percent: 36.9% · SCHEDULE 13G
Firefly Aerospace Inc. has 6 Schedule 13D or 13G filings on record since 2025-11-10. 3 holders' latest filing reports 5% or more of common stock, par value $0.0001. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| AeroEquity GP, LLC | 30.3% | 50,805,752 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| 6.9% | 11,338,168 | SCHEDULE 13G/A, 2026-08-11 | 2026-06-30 | |
| 5.2% | 8,816,520 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
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More on Firefly Aerospace Inc. and the records around it.
Firefly Aerospace Inc. elsewhere on the record
- Company profile and every filing Jul 2026
- Form D filing Jul 2026
- IPO filing Jun 2026
- Leadership changes Apr 2026
- Acquisition Nov 2025
- Who owns it
Companies that share a holder
- AeroEquity GP, LLC also filed stake reports on 1 other company: York Space Systems Inc. (Aug 2026)
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What the Full Report on Firefly Aerospace Inc. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
18 cited sources found
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| AeroEquity GP, LLC | 0 | 50,805,752 | 0 | 50,805,752 | SCHEDULE 13G/A, 2026-08-14 |
| Mitsui & Co., LTD. | 0 | 2,063,762 | 2,063,762 | 0 | SCHEDULE 13G/A, 2026-08-14 |
| Marc Allen Weiser | 0 | 903,565 | 0 | 903,565 | SCHEDULE 13G/A, 2026-08-14 |
| Astera Institute | 0 | 11,338,168 | 0 | 11,338,168 | SCHEDULE 13G/A, 2026-08-11 |
| Jed McCaleb | 0 | 11,338,168 | 0 | 11,338,168 | SCHEDULE 13G/A, 2026-08-11 |
| Markusic Thomas E | 8,581,146 | 235,374 | 8,581,146 | 235,374 | SCHEDULE 13G/A, 2026-08-14 |
The latest filing identifies Firefly Aerospace Inc. by CUSIP 31816X106 and gives its principal executive office as 2203 SCOTTSDALE DRIVE, LEANDER, TX 78641 (SCHEDULE 13G/A, 2026-08-14).
What the percentages are based on
5.2%, which is calculated based on 167,404,645 shares of Common Shares outstanding as of August 6, 2026, as reported on the Issuer's Form 10-Q filed with the SEC on August 11, 2026, as increased by 4,008,701 shares of Common Stock issuable upon exercise of options to purchase Common Stock.Markusic Thomas E, SCHEDULE 13G/A, 2026-08-14
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-11-10 | Astera Institute | 8.9% | SCHEDULE 13G |
| 2025-11-14 | AeroEquity GP, LLC | 36.9% | SCHEDULE 13G |
| 2026-02-02 | AeroEquity GP, LLC | 36.9% | SCHEDULE 13G/A |
| 2026-08-11 | Astera Institute | 6.9% | SCHEDULE 13G/A |
| 2026-08-14 | AeroEquity GP, LLC | 30.3% | SCHEDULE 13G/A |
| 2026-08-14 | Markusic Thomas E | 5.2% | SCHEDULE 13G/A |
Questions about who owns Firefly Aerospace Inc.
Who owns Firefly Aerospace Inc.?
On this page, 3 holders' latest ownership filings report 5% or more of Firefly Aerospace Inc.: AeroEquity GP, LLC (30.3%, Schedule 13G/A, filed 2026-08-14), Astera Institute (6.9%, Schedule 13G/A, filed 2026-08-11) and Markusic Thomas E (5.2%, Schedule 13G/A, filed 2026-08-14).
Who are the largest shareholders of Firefly Aerospace Inc.?
By the share each holder's latest filing reports, the largest holders of Firefly Aerospace Inc. on this page are AeroEquity GP, LLC (30.3%), Astera Institute (6.9%) and Markusic Thomas E (5.2%).
When did AeroEquity GP, LLC buy into Firefly Aerospace Inc.?
The filings give report dates, not purchase dates. The earliest filing from AeroEquity GP, LLC on this page is the Schedule 13G, filed 2025-11-14, reporting 36.9%; its latest, Schedule 13G/A filed 2026-08-14, reports 30.3%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 6 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Firefly Aerospace Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 6, 2026 | Leadership change: Thomas Zurbuchen departs, Director | — | Leadership changes | Source |
| July 8, 2026 | Form D, private offering | $22M sold | Form D page | Source |
| June 30, 2026 | Federal contract, National Aeronautics and Space Administration | $31.33M | Federal contract | Source |
| June 1, 2026 | IPO filing, Form 424B4 | $48 a share | IPO filings | Source |
| May 26, 2026 | IPO filing, Form S-1 | — | IPO filings | Source |
| April 3, 2026 | Leadership change: Marc Weiser departs | — | Leadership changes | Source |
| December 23, 2025 | Court case: Firefly Aerospace Inc. v. Kim, District Court, W.D. Texas | — | Court records | Source |
| December 15, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| November 17, 2025 | IPO filing, Form S-1 | — | IPO filings | Source |
| November 11, 2025 | Court case: IN RE FIREFLY AEROSPACE INC. SECURITIES LITIGATION, District Court, W.D. Texas | — | Court records | Source |
| October 31, 2025 | Acquired SciTec Innovations, LLC | $855.60M | Acquisition | Source |
| September 30, 2025 | SBIR Phase III award, National Aeronautics and Space Administration | $150K | SBIR or STTR award | Source |
The newest 12 of 17 records.
Firefly Aerospace Inc.: every filing and event
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.