Highview Merger Corp. - Class A Ordinary Shares, $0.0001 par value (HVMC)

Q: What does CUSIP G4569C101 represent in this 13F holders report?

CUSIP G4569C101 is the security identifier for HVMC - Highview Merger Corp. - Class A Ordinary Shares, $0.0001 par value used to aggregate holder disclosures.

Q: How many institutions held HVMC - Highview Merger Corp. - Class A Ordinary Shares, $0.0001 par value in Q4 2025?

49 institutional investors reported HVMC - Highview Merger Corp. - Class A Ordinary Shares, $0.0001 par value for Q4 2025. Use the holders table for investor-level position and value details.

CUSIP: G4569C101

Q4 2025 13F Holders as of 31 Dec 2025

Security type / class: Equity / Class A Ordinary Shares, $0.0001 par value
Total 13F shares: 20,250,664
Total 13F value: $202,502,265
Share change: +19,452,153
SEC-reported price per share: $10.00
Number of holders: 49
Value change: +$194,517,155
Number of buys: 47
Shares outstanding: 23,809,524

Security key

G4569C101

Report period

Q4 2025

Institutions

Top holders

HVMC full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2026 Highview Merger Corp. SEC filings Highview Merger Corp. company facts

Broader feeds

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

Reporting periods

Holder history for CUSIP G4569C101

Newer quarter: Q1 2026

Recent filing periods:

Q1 2026 Q4 2025

Ownership snapshot

Top reported holders of HVMC - Highview Merger Corp. - Class A Ordinary Shares, $0.0001 par value (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

Highview Sponsor Co., LLC

Disclosed value leader

ADAGE CAPITAL PARTNERS GP...

Comparable rows

15/15

Latest evidence

30 Sep 2025

3/4/5 13D/G 13F Lead comparable stake: 21% 13D/G row: Highview Sponsor Co., LLC Showing 1-6 of 15 holder rows.

Quick read

Highview Sponsor Co., LLC leads the comparable SEC ownership view at 21%.

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 Highview Sponsor Co., LLC's linked filing trail.

Comparable ownership Top 5

Highview Sponsor Co., LLC 21%

Adage Capital Management, L.P. 7.6%

AQR CAPITAL MANAGEMENT LLC 5.4%

MILLENNIUM MANAGEMENT LLC 4.2%

HEALTHCARE OF ONTARIO PENSION PLA... 4.2%

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
Highview Sponsor Co., LLC	3/4/5 13D/G Director, *Director by Deputization, 10%+ Owner 3/4/5 13D/G	21% from 13D/G	$3,725,000 372,500 shares	—	11 Aug 2025
Adage Capital Management, L.P.	13D/G 13D/G	7.6%	— 1,800,000 shares	$0	30 Sep 2025
AQR CAPITAL MANAGEMENT LLC	13D/G 13D/G	5.4%	— 1,268,226 shares	$0	30 Sep 2025
MILLENNIUM MANAGEMENT LLC	13F 13D/G Company 13F 13D/G	4.2% from 13D/G	$13,662,000 1,350,000 shares	—	30 Sep 2025
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	13F 13D/G Company 13F 13D/G	4.2% from 13D/G	$12,650,000 1,250,000 shares	—	30 Sep 2025
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F Company 13F	7.6%	$18,216,000 1,800,000 shares	—	30 Sep 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 Q4 2025

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

Institutions

20,250,664

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 Q4 2025 vs Q4 2025 Across Filers

Q4 2025 holders

Holder diff

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

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend