Haymaker Acquisition Corp. III
Haymaker Acquisition Corp. III (HYAC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · HYAC · as of Sep 30, 2025
Ownership Breakdown
49
Institutional Holders
▼ 11 vs Q2
$247.50M
Total Inst. Value
▲ $8.21M vs Q2
29.18M
Shares Outstanding
freeFloat 96.65%
21.86M
13F Shares Held
▲ 303,221 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
HYAC largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
FORT BAKER CAPITAL MANAGEMENT LP medicinal chemicals & botanical products | 2.34M | 7.91% | 7.91% | $26.50B | Nov 14, 2025 | ▲ 9.0K |
WESTCHESTER CAPITAL MANAGEMENT, LLC medicinal chemicals & botanical products | 1.94M | 6.56% | 6.56% | $21.99B | Nov 14, 2025 | ▲ 750.0K |
BERKLEY W R CORP medicinal chemicals & botanical products | 1.68M | 5.69% | 5.69% | $19.05B | Nov 14, 2025 | ▲ 1.50M |
WEALTHSPRING CAPITAL LLC medicinal chemicals & botanical products | 1.68M | 5.68% | 5.68% | $19.03B | Oct 15, 2025 | ▼ 35.7K |
FIRST TRUST CAPITAL MANAGEMENT L.P. medicinal chemicals & botanical products | 1.46M | 4.93% | 4.93% | $16.52B | Nov 17, 2025 | ▼ 598.9K |
WOLVERINE ASSET MANAGEMENT LLC medicinal chemicals & botanical products | 1.44M | 4.88% | 4.88% | $16.36B | Oct 28, 2025 | ▲ 440.4K |
METEORA CAPITAL, LLC medicinal chemicals & botanical products | 993.6K | 3.36% | 3.36% | $11.27B | Nov 17, 2025 | ▲ 847.0K |
MIZUHO SECURITIES USA LLC medicinal chemicals & botanical products | 987.4K | 3.34% | 3.34% | $11.01B | Oct 22, 2025 | ▲ 569.3K |
GLAZER CAPITAL, LLC medicinal chemicals & botanical products | 974.8K | 3.30% | 3.30% | $11.05B | Nov 13, 2025 | ▼ 49.2K |
MMCAP INTERNATIONAL INC. SPC medicinal chemicals & botanical products | 900.0K | 3.05% | 3.05% | $10.21B | Nov 10, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
11
Increased
+4.83M shares3
New Positions
first time holders14
Decreased
−1.19M shares1
Sold Out
fully exitedNet shares change (top 50)
+3.64M
+4.83M / −1.19M
Net new holders
-1
3 new / 1 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
HYAC insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
HEYER STEVEN J Chief Executive Officer | Mar 5, 2021 | J-Other | 687,500 | — | — | 7.94M | Form 4 ↗ |
HEYER ANDREW R President | Mar 5, 2021 | J-Other | 687,500 | — | — | 7.94M | Form 4 ↗ |
Haymaker Sponsor II LLC 10 percent owner | Dec 22, 2020 | C-Conversion | 10,000,000 | $0.00 | $1.0K | 10.00M | Form 4 ↗ |
Haymaker Sponsor II LLC 10 percent owner | Dec 22, 2020 | C-Conversion | 10,000,000 | — | — | 0 | Form 4 ↗ |
Haymaker Sponsor II LLC 10 percent owner | Dec 22, 2020 | J-Other | 10,000,000 | $0.00 | $1.0K | 0 | Form 4 ↗ |
Haymaker Sponsor II LLC 10 percent owner | Dec 22, 2020 | J-Other | 5,550,000 | — | — | 0 | Form 4 ↗ |
HEYER STEVEN J Chief Executive Officer | Dec 22, 2020 | C-Conversion | 10,000,000 | $0.00 | $1.0K | 10.00M | Form 4 ↗ |
HEYER STEVEN J Chief Executive Officer | Dec 22, 2020 | J-Other | 5,550,000 | — | — | 0 | Form 4 ↗ |
HEYER STEVEN J Chief Executive Officer | Dec 22, 2020 | C-Conversion | 10,000,000 | — | — | 0 | Form 4 ↗ |
HEYER STEVEN J Chief Executive Officer | Dec 22, 2020 | J-Other | 10,000,000 | $0.00 | $1.0K | 0 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Haymaker Acquisition Corp. III (HYAC) is primarily owned by institutional investors, who hold approximately 74.9% of total shares outstanding. Company insiders own approximately 3.35%, while retail and public investors account for the remaining 21.71%.
The largest institutional shareholder of Haymaker Acquisition Corp. III is FORT BAKER CAPITAL MANAGEMENT LP, holding approximately 2.34 million shares — equal to 7.91% of outstanding shares — as of September 30, 2025.
A total of 49 institutional investors currently hold HYAC stock, with a combined institutional value of approximately $247,498,985 as of the most recent 13F filing period.
Frequently asked questions
HYAC ownershipHaymaker Acquisition Corp. III (HYAC) is primarily owned by institutional investors, who hold approximately 74.9% of shares. The largest shareholder is FORT BAKER CAPITAL MANAGEMENT LP with a 7.91% stake. Company insiders hold 3.35%. Data sourced from SEC Form 13F as of September 30, 2025.