As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of AA Mission Acquisition Corp. The largest reported stake is Westchester Capital Management, LLC's, at 7.63%. 9 filings are on record since July 11, 2025 (Schedule 13G, November 14, 2025).
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Key facts
- · Reporting person: W. R. Berkley Corporation · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-05
- · Reporting person: First Trust Merger Arbitrage Fund · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-05-15
- · Reporting person: Karpus Management, Inc. · Sole voting: 20,000 · Shared voting: 0 · Sole dispositive: 20,000 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-03-06
- · Reporting person: Wolverine Asset Management, LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-02-27
- · Holder: Westchester Capital Management, LLC · Percent: 7.63% · SCHEDULE 13G
AA Mission Acquisition Corp. has 9 Schedule 13D or 13G filings on record since 2025-07-11. 2 holders' latest filing reports 5% or more of class a ordinary shares, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Westchester Capital Management, LLC | 7.63% | 2,696,389 | SCHEDULE 13G, 2025-11-14 | 2025-09-30 |
| Aristeia Capital, L.L.C. | 5.14% | 1,818,429 | SCHEDULE 13G, 2025-08-14 | 2025-06-30 |
| Karpus Management, Inc. | 0.05% | 20,000 | SCHEDULE 13G/A, 2026-03-06 | 2026-02-27 |
| Wolverine Asset Management, LLC | 0% | 0 | SCHEDULE 13G/A, 2026-02-27 | 2026-02-13 |
| W. R. Berkley Corporation | 0% | 0 | SCHEDULE 13G/A, 2026-08-05 | 2026-06-30 |
| First Trust Merger Arbitrage Fund | 0% | 0 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
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More on AA Mission Acquisition Corp. and the records around it.
Companies that share a holder
- Westchester Capital Management, LLC also filed stake reports on 31 other companies: Lakeshore Acquisition III Corp. (Aug 2026), Sizzle Acquisition Corp. II (Aug 2026), Tavia Acquisition Corp. (Aug 2026)
- First Trust Merger Arbitrage Fund also filed stake reports on 47 other companies: TCW SPECIALTY LENDING LLC (Sep 2026), Blue Foundry Bancorp (Aug 2026), Centurion Acquisition Corp. (Aug 2026)
- Aristeia Capital, L.L.C. also filed stake reports on 54 other companies: Apogee Acquisition Corp (Aug 2026), ARC Group Acquisition I Corp (Aug 2026), ClearThink 1 Acquisition Corp. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Karpus Management, Inc. | 20,000 | 0 | 20,000 | 0 | SCHEDULE 13G/A, 2026-03-06 |
| Wolverine Asset Management, LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-27 |
| Wolverine Holdings, LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-27 |
| Christopher L. Gust | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-27 |
| Robert R. Bellick | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-27 |
| W. R. Berkley Corporation | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-05 |
| Berkley Insurance Company | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-05 |
| First Trust Merger Arbitrage Fund | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-05-15 |
| First Trust Capital Management L.P. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-05-15 |
| First Trust Capital Solutions L.P. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-05-15 |
| FTCS Sub GP LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-05-15 |
The latest filing identifies AA Mission Acquisition Corp. by CUSIP G1000R101 and gives its principal executive office as 21 WATERWAY AVENUE, Suite 300, #9732, The Woodlands, TX 77380 (SCHEDULE 13G/A, 2026-08-05).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-11 | Wolverine Asset Management LLC | 5.19% | SCHEDULE 13G |
| 2025-08-08 | W. R. Berkley Corporation | 9.1% | SCHEDULE 13G |
| 2025-08-14 | Aristeia Capital, L.L.C. | 5.14% | SCHEDULE 13G |
| 2025-08-14 | First Trust Capital Management L.P. | 6.87% | SCHEDULE 13G/A |
| 2025-11-14 | Westchester Capital Management, LLC | 7.63% | SCHEDULE 13G |
| 2026-02-27 | Wolverine Asset Management, LLC | 0% | SCHEDULE 13G/A |
| 2026-03-06 | Karpus Management, Inc. | 0.05% | SCHEDULE 13G/A |
| 2026-05-15 | First Trust Merger Arbitrage Fund | 0% | SCHEDULE 13G/A |
| 2026-08-05 | W. R. Berkley Corporation | 0% | SCHEDULE 13G/A |
Questions about who owns AA Mission Acquisition Corp.
Who owns AA Mission Acquisition Corp.?
On this page, 2 holders' latest ownership filings report 5% or more of AA Mission Acquisition Corp.: Westchester Capital Management, LLC (7.63%, Schedule 13G, filed 2025-11-14) and Aristeia Capital, L.L.C. (5.14%, Schedule 13G, filed 2025-08-14).
Who are the largest shareholders of AA Mission Acquisition Corp.?
By the share each holder's latest filing reports, the largest holders of AA Mission Acquisition Corp. on this page are Westchester Capital Management, LLC (7.63%) and Aristeia Capital, L.L.C. (5.14%).
When did Westchester Capital Management, LLC buy into AA Mission Acquisition Corp.?
The filings give report dates, not purchase dates. The earliest filing from Westchester Capital Management, LLC on this page is the Schedule 13G, filed 2025-11-14, reporting 7.63%.
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%); 9 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 AA Mission Acquisition Corp.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 2, 2024 | IPO filing, Form 424B4 | — | IPO filings | Source |
| July 26, 2024 | IPO filing, Form S-1/A | — | IPO filings | Source |
| July 17, 2024 | IPO filing, Form S-1/A | — | IPO filings | Source |
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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.