HAYMAKER ACQUISITION CORP. 4 - Class A ordinary shares, par value $0.0001 per share (HYAC)

Q: What does CUSIP G4375F108 represent in this 13F holders report?

CUSIP G4375F108 is the security identifier for HYAC - HAYMAKER ACQUISITION CORP. 4 - Class A ordinary shares, par value $0.0001 per share used to aggregate holder disclosures.

Q: How many institutions held HYAC - HAYMAKER ACQUISITION CORP. 4 - Class A ordinary shares, par value $0.0001 per share in Q1 2026?

32 institutional investors reported HYAC - HAYMAKER ACQUISITION CORP. 4 - Class A ordinary shares, par value $0.0001 per share for Q1 2026. Use the holders table for investor-level position and value details.

CUSIP: G4375F108

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / Class A ordinary shares, par value $0.0001 per share
Total 13F shares: 18,114,282
Total 13F value: $207,257,938
Share change: -3,281,290
SEC-reported price per share: $11.54
Number of holders: 32
Value change: -$37,382,385
Number of buys: 12
Number of sells: 28
Shares outstanding: 23,425,652

Security key

G4375F108

Report period

Q1 2026

Institutions

Top holders

HYAC full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Previous quarter: Q4 2025 Haymaker Acquisition Corp. 4 SEC filings Haymaker Acquisition Corp. 4 company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP G4375F108

Newer quarter: Q2 2026 Previous quarter: Q4 2025

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of HYAC - HAYMAKER ACQUISITION CORP. 4 - Class A ordinary shares, par value $0.0001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BERKLEY W R CORP

Disclosed value leader

Fort Baker Capital Manage...

Comparable rows

15/15

Latest evidence

31 Dec 2025

13F 13D/G Lead comparable stake: 9.9% 13D/G row: BERKLEY W R CORP Showing 1-6 of 15 holder rows.

Quick read

BERKLEY W R CORP leads the comparable SEC ownership view at 9.9%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BERKLEY W R CORP's linked filing trail.

Comparable ownership Top 5

BERKLEY W R CORP 9.9%

Westchester Capital Management, LLC 8.2%

MIZUHO FINANCIAL GROUP INC 5.3%

First Trust Capital Management L.P. 1.1%

Fort Baker Capital Management LP 1.1%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BERKLEY W R CORP	13F 13D/G Company · W.R. Berkley Corporation 13F 13D/G	9.9% from 13D/G	$22,352,676 1,964,207 shares	—	31 Dec 2025
Westchester Capital Management, LLC	13F 13D/G Company 13F 13D/G	8.2% from 13D/G	$22,066,139 1,939,028 shares	—	31 Dec 2025
MIZUHO FINANCIAL GROUP INC	13D/G 13D/G	5.3%	$14,215,054 1,249,126 shares	$0	31 Dec 2025
First Trust Capital Management L.P.	13F 13D/G Company 13F 13D/G	1.1% from 13D/G	$16,565,479 1,455,666 shares	—	31 Dec 2025
Fort Baker Capital Management LP	13F 13D/G Company 13F 13D/G	1.1% from 13D/G	$26,597,564 2,337,220 shares	—	31 Dec 2025
Wealthspring Capital LLC	13F Company 13F	7.1%	$18,861,815 1,657,453 shares	—	31 Dec 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

18,114,282

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

Q1 2026 holders

Holder diff

-15

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 value	Q1 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend