As of November 10, 2026, 6 holders' latest Schedule 13D or 13G filings report owning 5% or more of Aperture AC. The largest reported stake is Aperture Sponsor LLC's, at 27.1%. 10 filings are on record since May 21, 2026 (Schedule 13D, June 1, 2026).
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Key facts
- · Reporting person: W. R. Berkley Corporation · Sole voting: 0 · Shared voting: 875,521 · Sole dispositive: 0 · Shared dispositive: 875,521 · SCHEDULE 13G, 2026-11-09
- · Reporting person: Feis Equities LLC · Sole voting: 399,692 · Shared voting: 0 · Sole dispositive: 399,692 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-10-09
- · Reporting person: Highbridge Capital Management, LLC · Sole voting: 855,000 · Shared voting: 0 · Sole dispositive: 855,000 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-14
- · Reporting person: Polar Asset Management Partners Inc. · Sole voting: 825,000 · Shared voting: 0 · Sole dispositive: 825,000 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-14
- · Reporting person: Harraden Circle Investments, LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-14
Aperture AC has 10 Schedule 13D or 13G filings on record since 2026-05-21. 6 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 |
|---|---|---|---|---|
| Aperture Sponsor LLC | 27.1% | 3,995,603 | SCHEDULE 13D, 2026-06-01 | 2026-05-22 |
| Mizuho Financial Group, Inc. | 8.6% | 945,000 | SCHEDULE 13G, 2026-08-13 | 2026-06-30 |
| Space Summit Capital LLC | 8.1% | 725,000 | SCHEDULE 13G, 2026-05-21 | 2026-05-21 |
| W. R. Berkley Corporation | 8% | 875,521 | SCHEDULE 13G, 2026-11-09 | 2026-09-30 |
| Highbridge Capital Management, LLC | 7.8% | 855,000 | SCHEDULE 13G, 2026-08-14 | 2026-06-30 |
| Polar Asset Management Partners Inc. | 7.5% | 825,000 | SCHEDULE 13G, 2026-08-14 | 2026-06-30 |
| Feis Equities LLC | 3.65% | 399,692 | SCHEDULE 13G/A, 2026-10-09 | 2026-10-07 |
| Harraden Circle Investments, LLC | 0% | 0 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
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More on Aperture AC and the records around it.
Companies that share a holder
- Space Summit Capital LLC also filed stake reports on 9 other companies: Pine Tree Acquisition Corp. (Oct 2026), East West Ave Acquisition Corp. (Aug 2026), Southern Cross Acquisition I Corp. (Jul 2026)
- Feis Equities LLC also filed stake reports on 44 other companies: SPACCircle Acquisition Corp. (Oct 2026), Pine Tree Acquisition Corp. (Oct 2026), Southern Cross Acquisition II Corp. (Aug 2026)
- Polar Asset Management Partners Inc. also filed stake reports on 69 other companies: Aeon Acquisition I Corp. (Aug 2026), Bitcoin Depot Inc. (Aug 2026), ACP Holdings 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 |
|---|---|---|---|---|---|
| Aperture Sponsor LLC | 3,995,603 | 0 | 3,995,603 | 0 | SCHEDULE 13D, 2026-06-01 |
| Calvin Kung | 3,995,603 | 0 | 3,995,603 | 0 | SCHEDULE 13D, 2026-06-01 |
| Mizuho Financial Group, Inc. | 945,000 | 0 | 945,000 | 0 | SCHEDULE 13G, 2026-08-13 |
| W. R. Berkley Corporation | 0 | 875,521 | 0 | 875,521 | SCHEDULE 13G, 2026-11-09 |
| Berkley Insurance Company | 0 | 875,521 | 0 | 875,521 | SCHEDULE 13G, 2026-11-09 |
| Highbridge Capital Management, LLC | 855,000 | 0 | 855,000 | 0 | SCHEDULE 13G, 2026-08-14 |
| Polar Asset Management Partners Inc. | 825,000 | 0 | 825,000 | 0 | SCHEDULE 13G, 2026-08-14 |
| Feis Equities LLC | 399,692 | 0 | 399,692 | 0 | SCHEDULE 13G/A, 2026-10-09 |
| Lawrence M. Feis | 399,692 | 0 | 399,692 | 0 | SCHEDULE 13G/A, 2026-10-09 |
| Harraden Circle Investments, LLC | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
| Frederick V. Fortmiller, Jr. | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-14 |
The latest filing identifies Aperture AC by CUSIP G0474D101 and gives its principal executive office as 835 Wilshire Blvd. 5th Floor, Los Angeles, CA 90017 (SCHEDULE 13G, 2026-11-09).
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 $2,230,000. The source of these funds was the working capital of Sponsor.Aperture Sponsor LLC, SCHEDULE 13D, 2026-06-01
Purpose of Transaction (Item 4)
Aperture Sponsor LLC
Founder Shares On September 30, 2025, the Sponsor acquired an aggregate of 3,828,082 Class B ordinary shares, for $25,000, or approximately $0.007 per share, including an aggregate of up to 499,315 shares subject to forfeiture to the extent the underwriters did not exercise their over-allotment option in full. On May 22, 2026, the underwriters partially exercised the over-allotment option in connection with the IPO and as a result, 55,479 founder shares were forfeited by the Sponsor. The Founder Shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination (the "Business Combination") on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights. The description of the Founder Share Purchase Agreement is qualified in its entirety by reference to the full text of such agreement, a copy of which was filed as Exhibit 10.8 to the Registration Statement on Form S-1 initially filed by the Issuer with the SEC on November 17, 2025 (and is incorporated by reference herein as Exhibit 10.1). Placement Units On May 20, 2026, as part of a Private Placement Units Purchase Agreement dated May 20, 2026 (the "Unit Purchase Agreement"), Sponsor purchased 223,000 placement units (the "Placement Units") from the Issuer for an aggregate purchase price of $2,230,000. Each Placement Unit consists of one Class A ordinary share ("Placement Share") and one right to receive one-fourth (1/4) of a Class A ordinary …The first part of Item 4 of the SCHEDULE 13D filed 2026-06-01; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-05-21 | Space Summit Capital LLC | 8.1% | SCHEDULE 13G |
| 2026-05-27 | Feis Equities LLC | 6.41% | SCHEDULE 13G |
| 2026-05-29 | Harraden Circle Investments, LLC | 8.49% | SCHEDULE 13G |
| 2026-06-01 | Aperture Sponsor LLC | 27.1% | SCHEDULE 13D |
| 2026-08-13 | Mizuho Financial Group, Inc. | 8.6% | SCHEDULE 13G |
| 2026-08-14 | Highbridge Capital Management, LLC | 7.8% | SCHEDULE 13G |
| 2026-08-14 | Harraden Circle Investments, LLC | 0% | SCHEDULE 13G/A |
| 2026-08-14 | Polar Asset Management Partners Inc. | 7.5% | SCHEDULE 13G |
| 2026-10-09 | Feis Equities LLC | 3.65% | SCHEDULE 13G/A |
| 2026-11-09 | W. R. Berkley Corporation | 8% | SCHEDULE 13G |
Questions about who owns Aperture AC
Who owns Aperture AC?
On this page, 6 holders' latest ownership filings report 5% or more of Aperture AC: Aperture Sponsor LLC (27.1%, Schedule 13D, filed 2026-06-01), Mizuho Financial Group, Inc. (8.6%, Schedule 13G, filed 2026-08-13), Space Summit Capital LLC (8.1%, Schedule 13G, filed 2026-05-21), W. R. Berkley Corporation (8%, Schedule 13G, filed 2026-11-09) and Highbridge Capital Management, LLC (7.8%, Schedule 13G, filed 2026-08-14); 1 more is listed above.
Who are the largest shareholders of Aperture AC?
By the share each holder's latest filing reports, the largest holders of Aperture AC on this page are Aperture Sponsor LLC (27.1%), Mizuho Financial Group, Inc. (8.6%) and Space Summit Capital LLC (8.1%).
When did Aperture Sponsor LLC buy into Aperture AC?
The filings give report dates, not purchase dates. The earliest filing from Aperture Sponsor LLC on this page is the Schedule 13D, filed 2026-06-01, reporting 27.1%.
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%); 10 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 Aperture AC
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| May 22, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| May 21, 2026 | IPO filing, Form 424B4 | — | IPO filings | Source |
| May 6, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| April 23, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| April 6, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| January 30, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| November 17, 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.