AmperCap Acquisition Company: 5%+ holders

As of November 10, 2026, 6 holders' latest Schedule 13D or 13G filings report owning 5% or more of AmperCap Acquisition Company. The largest reported stake is AmperSPAC LLC's, at 19.61%. 7 filings are on record since June 10, 2026 (Schedule 13D, June 11, 2026).

Wealthspring Capital LLC also filed stake reports on 17 other companies ↓

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Key facts

• Filing 2026-10-07 · Reporting person: Wolverine Asset Management, LLC · Sole voting: 0 · Shared voting: 1,120,906 · Sole dispositive: 0 · Shared dispositive: 1,120,906 · SCHEDULE 13G, 2026-10-07
• Filing 2026-08-14 · Reporting person: Sculptor Capital LP · Sole voting: 0 · Shared voting: 1,021,965 · Sole dispositive: 0 · Shared dispositive: 1,021,965 · SCHEDULE 13G/A, 2026-08-14
• Filing 2026-08-13 · Reporting person: Magnetar Financial LLC · Sole voting: 0 · Shared voting: 1,200,000 · Sole dispositive: 0 · Shared dispositive: 1,200,000 · SCHEDULE 13G, 2026-08-13
• Filing 2026-08-12 · Reporting person: Adage Capital Management, L.P. · Sole voting: 0 · Shared voting: 1,125,000 · Sole dispositive: 0 · Shared dispositive: 1,125,000 · SCHEDULE 13G, 2026-08-12
• Filing 2026-07-09 · Reporting person: Wealthspring Capital LLC · Sole voting: 0 · Shared voting: 990,000 · Sole dispositive: 0 · Shared dispositive: 990,000 · SCHEDULE 13G, 2026-07-09

AmperCap Acquisition Company has 7 Schedule 13D or 13G filings on record since 2026-06-10. 6 holders' latest filing reports 5% or more of ordinary shares, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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More on AmperCap Acquisition Company and the records around it.

Companies that share a holder

• Wealthspring Capital LLC also filed stake reports on 17 other companies: Lionheart Holdings (Oct 2026), CENTURION ACQUISITION CORP (Jul 2026), InterPrivate Investment Partners V, Inc. (Jul 2026)
• Sculptor Capital LP also filed stake reports on 40 other companies: Helix Acquisition Corp. III (Oct 2026), Live Oak Acquisition Corp. VI (Oct 2026), Amanat Acquisition Corp (Aug 2026)
• Wolverine Asset Management, LLC also filed stake reports on 75 other companies: Black Hawk Acquisition Corp (Nov 2026), BTC Development Corp. (Oct 2026), D. Boral Acquisition I Corp. (Oct 2026)

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What the Full Report on AmperCap Acquisition Company covers

1. The Short Answer

2. Which Company This Is

3. What They Do, And How The Money Works

4. Who Runs It, And How To Reach Them

5. The Money: Funding, Valuation, Runway

6. Who Pays Them, And Who They Are Up Against

7. Warning Bells

8. Sources

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Voting and dispositive power, as filed

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The latest filing identifies AmperCap Acquisition Company by CUSIP G0344N107 and gives its principal executive office as 12 East 49th Street, 18th Floor, New York, NY 10017 (SCHEDULE 13G, 2026-10-07).

What the percentages are based on

As of June 30, 2026, each of the Reporting Persons were deemed to be the beneficial owner constituting approximately 8.05% of the total number of shares outstanding (based upon the information provided by the Issuer in the Form 8-K filed on June 18, 2026 there were approximately 14,905,125 Shares outstanding).Magnetar Financial LLC, SCHEDULE 13G, 2026-08-13

WAM may be deemed the beneficial owner of 5.62% of the Issuer's outstanding ordinary shares and each of Wolverine Holdings, Mr. Bellick, and Mr. Gust may be deemed the beneficial owner of 5.62% of the Issuer's outstanding ordinary shares.Wolverine Asset Management, LLC, SCHEDULE 13G, 2026-10-07

Source of funds (Item 3)

The aggregate purchase price for the Founder Shares (as defined below) was $25,000. The aggregate purchase price of the Placement Units (as defined below) was $5,676,250. The source of these funds was the working capital of Sponsor.AmperSPAC LLC, SCHEDULE 13D, 2026-06-11

Purpose of Transaction (Item 4)

AmperSPAC LLC

Founder Shares On January 6, 2026, the Sponsor acquired an aggregate of 4,791,667 ordinary shares, for $25,000, or approximately $0.005 per share (including an aggregate of up to 625,000 shares subject to forfeiture depending on the extent to which the underwriters' over-allotment option is exercised) ("Founder Shares"), pursuant to the Securities Subscription Agreement dated as of January 6, 2026 between the Sponsor and the Issuer (the "Founder Share Purchase Agreement") as more fully described in Item 6 of this Section 13D, which information is incorporated by reference. On June 4, 2026, upon the consummation of the initial public offering ("IPO") of the Issuer and the third-party investors purchasing 127,500 private placement units from the Issuer, Sponsor transferred an aggregate of 1,147,500 Founder Shares to such third-party investors on the same day. On June 10, 2026, the underwriters partially exercised their over-allotment option in connection with the IPO and as a result, 12,500 Founder Shares were forfeited by the Sponsor. As a result of the foregoing, Sponsor holds 3,631,667 Founder Shares of the Issuer as of June 11, 2026. Private Placement Units On June 2, 2026, simultaneously with the consummation of the Issuer's IPO, the Sponsor purchased 247,500 private placement units ("Placement Units") of the Issuer at $10.00 per Placement Unit, pursuant to a Private Placement Units Purchase Agreement, dated as of June 2, 2026, by and between the Issuer and the Sponsor …The first part of Item 4 of the SCHEDULE 13D filed 2026-06-11; the filing has the rest

Timeline

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Questions about who owns AmperCap Acquisition Company

Who owns AmperCap Acquisition Company?

On this page, 6 holders' latest ownership filings report 5% or more of AmperCap Acquisition Company: AmperSPAC LLC (19.61%, Schedule 13D, filed 2026-06-11), Magnetar Financial LLC (8.05%, Schedule 13G, filed 2026-08-13), Adage Capital Management, L.P. (5.64%, Schedule 13G, filed 2026-08-12), Wolverine Asset Management, LLC (5.62%, Schedule 13G, filed 2026-10-07) and Wealthspring Capital LLC (5.47%, Schedule 13G, filed 2026-07-09); 1 more is listed above.

Who are the largest shareholders of AmperCap Acquisition Company?

By the share each holder's latest filing reports, the largest holders of AmperCap Acquisition Company on this page are AmperSPAC LLC (19.61%), Magnetar Financial LLC (8.05%) and Adage Capital Management, L.P. (5.64%).

When did AmperSPAC LLC buy into AmperCap Acquisition Company?

The filings give report dates, not purchase dates. The earliest filing from AmperSPAC LLC on this page is the Schedule 13D, filed 2026-06-11, reporting 19.61%.

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%); 7 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 AmperCap Acquisition Company

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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.

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