Latest Period
Q1 2026
Security Snapshot
Haymaker Acquisition Corp. 4 - Class A Common Stock (HYAC) Institutional Ownership
CUSIP: G4375F108
13F Institutional Holders and Ownership History from Q3 2023 to Q2 2026
Institutions Reporting
32
Shares (Excl. Options)
18,114,282
Price
$11.54
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- Security type / class
- Equity / Class A Common Stock
- Symbol
- HYAC
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 18,114,282
- Total 13F value
- $207,257,938
- Portfolio coverage rank
- 0%
- Share change
- -3,281,290
- Value change
- -$37,382,385
- Number of holders
- 32
- Shares outstanding
- 23,425,652
- SEC-reported price per share
- $11.09
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- HYAC - Haymaker Acquisition Corp. 4 - Class A Common Stock is tracked under CUSIP G4375F108.
- 32 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 32 to 0 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $207,257,938 to $0.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 32 institutions filings for Q1 2026.
Security key
G4375F108
Latest holder period
Q1 2026
13F holders
32
13D/G owners
5
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G4375F108:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
HYAC
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Fort Baker Capital Management LP | 9% | $23,759,302 | 2,148,219 | Fort Baker Capital Management LP | 31 Mar 2025 | |||
| BERKLEY W R CORP | 8.4% | +17% | $22,352,676 | +$3,234,139 | 1,964,207 | +17% | W. R. Berkley Corporation | 31 Dec 2025 |
| Westchester Capital Management, LLC | 8.2% | +65% | $21,908,993 | +$8,425,416 | 1,932,010 | +62% | Westchester Capital Management, LLC | 30 Sep 2025 |
| First Trust Capital Management L.P. | 6.3% | $16,752,673 | 1,477,308 | First Trust Capital Management L.P. | 30 Sep 2025 | |||
| MIZUHO FINANCIAL GROUP INC | 5.3% | $14,215,054 | 1,249,126 | Mizuho Financial Group, Inc. | 31 Dec 2025 |
As of 31 Mar 2026, 32 institutional investors reported holding 18,114,282 shares of Haymaker Acquisition Corp. 4 - Class A Common Stock (HYAC). This represents 77% of the company’s total 23,425,652 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
76%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| AMERICAN CENTURY COMPANIES INC | 12% | 2,707,667 | 0.02% | $31,246,477 | |
| BERKLEY W R CORP | 9.9% | 2,321,633 | +18% | 1.4% | $26,721,996 |
| Harraden Circle Investments, LLC | 8.7% | 2,034,839 | +6626% | 4.7% | $23,441,345 |
| Westchester Capital Management, LLC | 8.3% | 1,939,028 | 0% | 1.1% | $22,221,261 |
| WASATCH ADVISORS LP | 7.1% | 1,674,418 | 0.13% | $19,322,784 | |
| Polar Asset Management Partners Inc. | 4.3% | 1,000,000 | +130% | 0.24% | $10,000,000 |
| MMCAP International Inc. SPC | 3.8% | 900,000 | 0% | 0.9% | $10,386,000 |
| Linden Advisors LP | 3.8% | 900,000 | 0% | 0.06% | $10,386,001 |
| AQR Arbitrage LLC | 2.9% | 681,390 | -0.67% | 0.13% | $7,863,241 |
| D. E. Shaw & Co., Inc. | 2.6% | 603,700 | 0% | 0.01% | $6,966,698 |
| Alberta Investment Management Corp | 1.7% | 400,000 | 0% | 0.03% | $4,616,000 |
| HSBC HOLDINGS PLC | 1.4% | 330,900 | 0% | 0% | $3,904,620 |
| GLAZER CAPITAL, LLC | 1.3% | 300,200 | -59% | 0.07% | $3,464,000 |
| MOORE CAPITAL MANAGEMENT, LP | 1.3% | 300,000 | 0% | 0.13% | $3,462,000 |
| Fort Baker Capital Management LP | 1.1% | 250,000 | -89% | 0.26% | $2,885,001 |
| First Trust Capital Management L.P. | 1% | 243,886 | -83% | 0.15% | $2,794,934 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.89% | 207,422 | +44% | 0% | $2,393,650 |
| DLD Asset Management, LP | 0.87% | 204,028 | 0% | 0.24% | $2,338,161 |
| Shaolin Capital Management LLC | 0.85% | 200,000 | -20% | 0.19% | $2,308,000 |
| Mint Tower Capital Management B.V. | 0.64% | 150,000 | 0% | 0.16% | $1,731,000 |
| Brevan Howard Capital Management LP | 0.63% | 146,860 | 0.02% | $1,688,890 | |
| MCGUIRE CAPITAL ADVISORS INC | 0.58% | 135,000 | 1% | $1,557,900 | |
| Calamos Advisors LLC | 0.43% | 100,000 | 0% | 0% | $1,154,000 |
| Hudson Bay Capital Management LP | 0.32% | 74,000 | -1.3% | 0.01% | $848,040 |
| CastleKnight Management LP | 0.31% | 73,751 | 0.04% | $851,087 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
12
Latest
Q1 2026
Rows shown
1-12 of 12
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 0 | $0 | -$19,895,784 | $11.09 | 0 |
| 2026 Q1 | 18,114,282 | $207,257,938 | -$37,382,385 | $11.54 | 32 |
| 2025 Q4 | 21,845,807 | $248,471,131 | -$16,138 | $11.38 | 47 |
| 2025 Q3 | 21,996,483 | $249,211,813 | +$2,976,408 | $11.34 | 48 |
| 2025 Q2 | 21,560,948 | $239,284,340 | +$12,580,041 | $11.10 | 59 |
| 2025 Q1 | 21,714,431 | $238,398,151 | +$6,360,740 | $10.99 | 55 |
| 2024 Q4 | 21,617,812 | $232,810,151 | +$9,717,808 | $10.77 | 56 |
| 2024 Q3 | 20,716,480 | $220,852,834 | +$14,961,126 | $10.66 | 51 |
| 2024 Q2 | 20,082,502 | $211,075,637 | +$128 | $10.51 | 60 |
| 2024 Q1 | 20,085,682 | $209,294,794 | +$4,701,146 | $10.42 | 60 |
| 2023 Q4 | 19,282,078 | $198,025,144 | +$55,620,117 | $10.27 | 59 |
| 2023 Q3 | 14,083,449 | $143,229,489 | +$143,229,489 | $10.17 | 43 |