As of November 10, 2026, 9 holders' latest Schedule 13D or 13G filings report owning 5% or more of Spacsphere Acquisition Corp. The largest reported stake is Feis Equities LLC's, at 8.94%. 14 filings are on record since February 10, 2026 (Schedule 13G, February 10, 2026).
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Key facts
- · Reporting person: W. R. Berkley Corporation · Sole voting: 0 · Shared voting: 1,119,364 · Sole dispositive: 0 · Shared dispositive: 1,119,364 · SCHEDULE 13G, 2026-11-09
- · Reporting person: Wolverine Asset Management, LLC · Sole voting: 0 · Shared voting: 954,297 · Sole dispositive: 0 · Shared dispositive: 954,297 · SCHEDULE 13G/A, 2026-10-06
- · Reporting person: Karpus Management, Inc. · Sole voting: 1,199,767 · Shared voting: 0 · Sole dispositive: 1,199,767 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-09-04
- · Reporting person: Mizuho Financial Group, Inc. · Sole voting: 1,012,567 · Shared voting: 0 · Sole dispositive: 1,012,567 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-13
- · Holder: Highbridge Capital Management, LLC · Percent: 7.6% · SCHEDULE 13G
Spacsphere Acquisition Corp. has 14 Schedule 13D or 13G filings on record since 2026-02-10. 9 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 |
|---|---|---|---|---|
| Feis Equities LLC | 8.94% | 1,542,704 | SCHEDULE 13G, 2026-02-10 | 2026-02-06 |
| Polar Asset Management Partners Inc. | 8.2% | 1,490,000 | SCHEDULE 13G, 2026-05-15 | 2026-03-31 |
| Yakira Capital Management, Inc. | 8.16% | 1,485,000 | SCHEDULE 13G, 2026-04-08 | 2026-03-31 |
| Highbridge Capital Management, LLC | 7.6% | 1,390,123 | SCHEDULE 13G, 2026-05-15 | 2026-03-31 |
| Lighthouse Investment Partners, LLC | 7.35% | 1,338,150 | SCHEDULE 13G, 2026-05-14 | 2026-03-31 |
| The Goldman Sachs Group, Inc. | 7.3% | 1,321,158 | SCHEDULE 13G, 2026-05-14 | 2026-03-31 |
| W. R. Berkley Corporation | 6.4% | 1,119,364 | SCHEDULE 13G, 2026-11-09 | 2026-09-30 |
| Mizuho Financial Group, Inc. | 5.5% | 1,012,567 | SCHEDULE 13G, 2026-08-13 | 2026-06-30 |
| Wolverine Asset Management, LLC | 5.22% | 954,297 | SCHEDULE 13G/A, 2026-10-06 | 2026-09-30 |
| Karpus Management, Inc. | 4.99% | 1,199,767 | SCHEDULE 13G/A, 2026-09-04 | 2026-08-31 |
| Harraden Circle Investments, LLC | 0% | 2 | SCHEDULE 13G/A, 2026-05-14 | 2026-03-31 |
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Keep reading
More on Spacsphere Acquisition Corp. and the records around it.
Spacsphere Acquisition Corp. elsewhere on the record
Companies that share a holder
- Yakira Capital Management, Inc. also filed stake reports on 4 other companies: BOA Acquisition Corp. II (Oct 2026), GigCapital9 Corp. (Apr 2026), GigCapital7 Corp. (Jan 2026)
- Lighthouse Investment Partners, LLC also filed stake reports on 8 other companies: GigCapital9 Corp. (Aug 2026), Cohen Circle Acquisition Corp. II (May 2026), Hennessy Capital Investment Corp. VII (May 2026)
- Feis Equities LLC also filed stake reports on 44 other companies: SPACCircle Acquisition Corp. (Oct 2026), Aperture AC (Oct 2026), Pine Tree Acquisition Corp. (Oct 2026)
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What the Full Report on Spacsphere Acquisition Corp. covers
The Short Answer
Which Company This Is
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| W. R. Berkley Corporation | 0 | 1,119,364 | 0 | 1,119,364 | SCHEDULE 13G, 2026-11-09 |
| Berkley Insurance Company | 0 | 1,119,364 | 0 | 1,119,364 | SCHEDULE 13G, 2026-11-09 |
| Mizuho Financial Group, Inc. | 1,012,567 | 0 | 1,012,567 | 0 | SCHEDULE 13G, 2026-08-13 |
| Wolverine Asset Management, LLC | 0 | 954,297 | 0 | 954,297 | SCHEDULE 13G/A, 2026-10-06 |
| Wolverine Holdings, LLC | 0 | 954,297 | 0 | 954,297 | SCHEDULE 13G/A, 2026-10-06 |
| Christopher L. Gust | 0 | 954,297 | 0 | 954,297 | SCHEDULE 13G/A, 2026-10-06 |
| Robert R. Bellick | 0 | 954,297 | 0 | 954,297 | SCHEDULE 13G/A, 2026-10-06 |
| Karpus Management, Inc. | 1,199,767 | 0 | 1,199,767 | 0 | SCHEDULE 13G/A, 2026-09-04 |
The latest filing identifies Spacsphere Acquisition Corp. by CUSIP G8T088109 and gives its principal executive office as 8795 Folsom Blvd, Sacramento, CA 95826 (SCHEDULE 13G, 2026-11-09).
What the percentages are based on
WAM may be deemed the beneficial owner of 5.22% of the Issuer's outstanding Class A Ordinary Shares and each of Wolverine Holdings, Mr. Bellick, and Mr. Gust may be deemed the beneficial owner of 5.22% of the Issuer's outstanding Class A Ordinary Shares.Wolverine Asset Management, LLC, SCHEDULE 13G/A, 2026-10-06
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-02-10 | Feis Equities LLC | 8.94% | SCHEDULE 13G |
| 2026-02-13 | Harraden Circle Investments, LLC | 9.15% | SCHEDULE 13G |
| 2026-04-08 | Yakira Capital Management, Inc. | 8.16% | SCHEDULE 13G |
| 2026-04-20 | Wolverine Asset Management, LLC | 6.39% | SCHEDULE 13G |
| 2026-05-14 | The Goldman Sachs Group, Inc. | 7.3% | SCHEDULE 13G |
| 2026-05-14 | Karpus Management, Inc. | 5.08% | SCHEDULE 13G |
| 2026-05-14 | Lighthouse Investment Partners, LLC | 7.35% | SCHEDULE 13G |
| 2026-05-14 | Harraden Circle Investments, LLC | 0% | SCHEDULE 13G/A |
| 2026-05-15 | Highbridge Capital Management, LLC | 7.6% | SCHEDULE 13G |
| 2026-05-15 | Polar Asset Management Partners Inc. | 8.2% | SCHEDULE 13G |
| 2026-08-13 | Mizuho Financial Group, Inc. | 5.5% | SCHEDULE 13G |
| 2026-09-04 | Karpus Management, Inc. | 4.99% | SCHEDULE 13G/A |
| 2026-10-06 | Wolverine Asset Management, LLC | 5.22% | SCHEDULE 13G/A |
| 2026-11-09 | W. R. Berkley Corporation | 6.4% | SCHEDULE 13G |
Questions about who owns Spacsphere Acquisition Corp.
Who owns Spacsphere Acquisition Corp.?
On this page, 9 holders' latest ownership filings report 5% or more of Spacsphere Acquisition Corp.: Feis Equities LLC (8.94%, Schedule 13G, filed 2026-02-10), Polar Asset Management Partners Inc. (8.2%, Schedule 13G, filed 2026-05-15), Yakira Capital Management, Inc. (8.16%, Schedule 13G, filed 2026-04-08), Highbridge Capital Management, LLC (7.6%, Schedule 13G, filed 2026-05-15) and Lighthouse Investment Partners, LLC (7.35%, Schedule 13G, filed 2026-05-14); 4 more are listed above.
Who are the largest shareholders of Spacsphere Acquisition Corp.?
By the share each holder's latest filing reports, the largest holders of Spacsphere Acquisition Corp. on this page are Feis Equities LLC (8.94%), Polar Asset Management Partners Inc. (8.2%) and Yakira Capital Management, Inc. (8.16%).
When did Feis Equities LLC buy into Spacsphere Acquisition Corp.?
The filings give report dates, not purchase dates. The earliest filing from Feis Equities LLC on this page is the Schedule 13G, filed 2026-02-10, reporting 8.94%.
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%); 14 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 Spacsphere Acquisition Corp.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| February 6, 2026 | IPO filing, Form 424B4 | $10 a share | IPO filings | Source |
| January 26, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| December 29, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| December 1, 2025 | IPO filing, Form S-1/A | — | IPO filings | Source |
| September 19, 2025 | IPO filing, Form S-1 | — | 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.