As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Haymaker Acquisition Corp. 4. The largest reported stake is Westchester Capital Management, LLC's, at 8.25%. 20 filings are on record since October 10, 2025 (Schedule 13G/A, 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, 2026-08-06
- · Holder: First Trust Capital Management L.P. · Percent: 1.13% · SCHEDULE 13G/A
- · Holder: Fort Baker Capital Management LP · Percent: 1.1% · SCHEDULE 13G/A
- · Holder: Mizuho Financial Group, Inc. · Percent: 0% · SCHEDULE 13G/A
- · Holder: W.R. Berkley Corporation · Percent: 9.9% · SCHEDULE 13G/A
Haymaker Acquisition Corp. 4 has 20 Schedule 13D or 13G filings on record since 2025-10-10. 1 holder's 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 | 8.25% | 1,932,010 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| First Trust Capital Management L.P. | 1.13% | 264,228 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Fort Baker Capital Management LP | 1.1% | 250,000 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| Wolverine Asset Management, LLC | 0% | 0 | SCHEDULE 13G/A, 2026-04-20 | 2026-04-14 |
| W. R. Berkley Corporation | 0% | 0 | SCHEDULE 13G/A, 2026-08-06 | 2026-06-30 |
| Mizuho Financial Group, Inc. | 0% | 0 | SCHEDULE 13G/A, 2026-05-14 | 2026-03-31 |
| Harraden Circle Investments, LLC | 0% | 0 | SCHEDULE 13G/A, 2026-04-17 | 2026-04-08 |
| American Century Capital Portfolios, Inc. | 0% | 0 | SCHEDULE 13G/A, 2026-05-05 | 2026-04-30 |
| Wealthspring Capital LLC | 0% | 0 | SCHEDULE 13G/A, 2026-04-09 | 2026-03-31 |
| Haymaker Sponsor IV LLC | 0% | 0 | SCHEDULE 13D/A, 2026-04-15 | 2026-04-08 |
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More on Haymaker Acquisition Corp. 4 and the records around it.
Haymaker Acquisition Corp. 4 elsewhere on the record
- Leadership changes Apr 2026
- Who owns it
Companies that share a holder
- Haymaker Sponsor IV LLC also filed stake reports on 1 other company: Suncrete, Inc. (Oct 2026)
- Wealthspring Capital LLC also filed stake reports on 17 other companies: Lionheart Holdings (Oct 2026), AmperCap Acquisition Company (Jul 2026), CENTURION ACQUISITION CORP (Jul 2026)
- Fort Baker Capital Management LP also filed stake reports on 26 other companies: Agriculture & Natural Solutions Acquisition Corp (Aug 2026), Bleichroeder Acquisition Corp. II (Aug 2026), Cartesian Growth Corp III (Aug 2026)
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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 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-06 |
| Berkley Insurance Company | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-08-06 |
The latest filing identifies Haymaker Acquisition Corp. 4 by CUSIP G4375F108 and gives its principal executive office as 324 Royal Palm Way, Suite 300-i, Palm Beach, FL 33480 (SCHEDULE 13G/A, 2026-08-06).
Purpose of Transaction (Item 4)
Haymaker Sponsor IV LLC
On April 8, 2026 (the "Closing Date"), the Issuer consummated its previously announced business combination (the "Closing") pursuant to that certain Business Combination Agreement, dated October 9, 2025 (the "Business Combination Agreement"), by and among Suncrete, Inc. ("PubCo"), Haymaker Acquisition Corp. 4, a Cayman Islands exempted company ("Haymaker" or "SPAC"), Haymaker Merger Sub I, Inc., a Delaware corporation and a direct wholly owned subsidiary of PubCo ("Merger Sub I"), Haymaker Merger Sub II, LLC, a Delaware limited liability company and direct wholly owned subsidiary of PubCo ("Merger Sub II"), and Concrete Partners Holding, LLC, a Delaware limited liability company ("Suncrete"). Immediately prior to the Closing, on April 8, 2026, Haymaker transferred by way of continuation out of its jurisdiction of incorporation from the Cayman Islands and domesticated into the State of Delaware (the "Domestication" and the time at which the Domestication became effective, the "Domestication Effective Time"). At the Domestication Effective Time (a) each SPAC Class A Ordinary Share that was issued and outstanding immediately prior to the Domestication Effective Time converted automatically, on a one-for-one basis, into one share of Class A Common Stock of the post-Domestication SPAC, par value $0.0001 per share ("SPAC Class A Common Stock"), (b) each Class B Ordinary Share of Haymaker, par value $0.0001 per share, that was issued and outstanding immediately prior to the …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-04-15; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-10-10 | Wolverine Asset Management LLC | 6.16% | SCHEDULE 13G |
| 2025-11-10 | W. R. Berkley Corporation | 7.2% | SCHEDULE 13G |
| 2025-11-14 | Westchester Capital Management, LLC | 8.25% | SCHEDULE 13G/A |
| 2025-11-14 | First Trust Capital Management L.P. | 6.31% | SCHEDULE 13G/A |
| 2026-02-10 | W. R. Berkley Corporation | 8.4% | SCHEDULE 13G/A |
| 2026-02-12 | Mizuho Financial Group, Inc. | 5.3% | SCHEDULE 13G |
| 2026-03-11 | Harraden Circle Investments, LLC | 9.99% | SCHEDULE 13G |
| 2026-04-07 | American Century Investment Management, Inc. | 11.6% | SCHEDULE 13G |
| 2026-04-08 | Harraden Circle Investments, LLC | 8.69% | SCHEDULE 13G/A |
| 2026-04-08 | Harraden Circle Investments, LLC | 20.93% | SCHEDULE 13G/A |
| 2026-04-09 | Wealthspring Capital LLC | 0% | SCHEDULE 13G/A |
| 2026-04-15 | Haymaker Sponsor IV LLC | 0% | SCHEDULE 13D/A |
| 2026-04-17 | Harraden Circle Investments, LLC | 0% | SCHEDULE 13G/A |
| 2026-04-20 | Wolverine Asset Management, LLC | 0% | SCHEDULE 13G/A |
| 2026-05-05 | American Century Capital Portfolios, Inc. | 0% | SCHEDULE 13G/A |
| 2026-05-08 | W.R. Berkley Corporation | 9.9% | SCHEDULE 13G/A |
| 2026-05-14 | Mizuho Financial Group, Inc. | 0% | SCHEDULE 13G/A |
| 2026-05-15 | First Trust Capital Management L.P. | 1.13% | SCHEDULE 13G/A |
| 2026-05-15 | Fort Baker Capital Management LP | 1.1% | SCHEDULE 13G/A |
| 2026-08-06 | W. R. Berkley Corporation | 0% | SCHEDULE 13G/A |
Questions about who owns Haymaker Acquisition Corp. 4
Who owns Haymaker Acquisition Corp. 4?
On this page, one holder's latest ownership filing reports 5% or more of Haymaker Acquisition Corp. 4: Westchester Capital Management, LLC (8.25%, Schedule 13G/A, filed 2025-11-14).
When did Westchester Capital Management, LLC buy into Haymaker Acquisition Corp. 4?
The filings give report dates, not purchase dates. The earliest filing from Westchester Capital Management, LLC on this page is the Schedule 13G/A, filed 2025-11-14, reporting 8.25%. That earliest filing is itself an amendment, which updates an earlier report.
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%); 20 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 Haymaker Acquisition Corp. 4
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| April 14, 2026 | Leadership change: Mark Jones appointed, Chief Operating Officer | — | Leadership changes | 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.