SEC ownership of HCM III ACQUISITION CORP.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002069856.

Comparable stake leader

HCM INVESTOR HOLDINGS III, LLC

Disclosed value leader

Exor N.V.

Comparable rows

4/50

Latest evidence

30 Jun 2026

Top shareholders Insider holders Latest transactions

Public ticker: HCMA, HCMAU, HCMAW on Nasdaq
Parsed ownership sources: 13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder: HCM INVESTOR HOLDINGS III, LLC
Ranking: Comparable ownership first, then disclosed value
Comparable ownership rows: 4 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder: HCM INVESTOR HOLDINGS III, LLC
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date: 30 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer CIK: 0002069856
Issuer location: Stamford, CT

Ownership snapshot

Top shareholders of HCM III ACQUISITION CORP. (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

HCM INVESTOR HOLDINGS III...

Disclosed value leader

Exor N.V.

Comparable rows

4/50

Latest evidence

30 Jun 2026

13D/G 13F 3/4/5 Lead comparable stake: 25% 46 rows are not safely comparable across share classes. 13D/G row: HCM INVESTOR HOLDINGS III, LLC Showing 1-8 of 50 holder rows.

Quick read

HCM INVESTOR HOLDINGS III, LLC leads the comparable SEC ownership view at 25%.

4 of 50 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 HCM INVESTOR HOLDINGS III, LLC's linked filing trail.

Comparable ownership Top 4

HCM INVESTOR HOLDINGS III, LLC 25%

Saba Capital Management, L.P. 13%

METEORA CAPITAL, LLC 6.6%

RP Investment Advisors LP 6.1%

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

Detailed SEC evidence table Showing 1-8 of 50 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
HCM INVESTOR HOLDINGS III, LLC	13D/G 13D/G	25% Reported 13D/G · 04 Aug 2025	$85,197,747 8,433,333 shares	$0	04 Aug 2025
Saba Capital Management, L.P.	13F 13D/G Company 13F 13D/G	13% Reported 13D/G · 01 Aug 2025	$7,948,068 1,082,983 shares mixed-class rows	—	30 Jun 2026
METEORA CAPITAL, LLC	13F 13D/G Company 13F 13D/G	6.6% Reported 13D/G · 30 Jun 2026	$17,487,484 2,108,483 shares mixed-class rows	—	30 Jun 2026
RP Investment Advisors LP	13D/G 13D/G	6.1% Reported 13D/G · 15 May 2026	$15,865,953 1,550,924 shares	$0	15 May 2026
Shawn Matthews	3/4/5 Chairman and CEO, Director, 10%+ Owner 3/4/5	— denominator unverified	$33,433 8,358,333 shares	—	31 Jul 2025
Exor N.V.	13F Company 13F	— denominator unverified	$5,055,509,678 185,932,684 shares	—	30 Jun 2026
ORBIMED ADVISORS LLC	13F Company 13F	— denominator unverified	$30,275,391 5,680,186 shares	—	30 Jun 2026
LINDEN ADVISORS LP	13F Company 13F	— mixed-class rows	$12,577,666 1,533,333 shares mixed-class rows	—	30 Jun 2026

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.

Forms 3/4/5 flow

Insider trading overview

No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 22 Oct 2025.

Buys

Insiders: 0

Sells

Insiders: 0

Net

Shares: 0

Window

Last 12 months

4 rolling buckets

Buy value Sell value

Shares: 0 Shares: 0

Window (months)	Buy value	Sell value	Net value
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-5 of 5 reporting-owner rows connected to HCM III ACQUISITION CORP.. Open a relationship link for the CIK-to-CIK filing trail.

Rows

Largest Forms 3/4/5 holder

Shawn Matthews

Net 12M change

Latest report

31 Jul 2025

Name	Relationship	Holdings Value	Valuation	Report Date
Shawn Matthews	Chairman and CEO, Director, 10%+ Owner	$33,433	Mixed	31 Jul 2025
Richard Charles Donohoe	Director	$100	Mixed	31 Jul 2025
Craig Goos	Director	$100	Mixed	31 Jul 2025
Jacob Loveless	Director	$100	Mixed	31 Jul 2025
Steven Bischoff	Chief Financial Officer, Director		Mixed	31 Jul 2025

Recent insider transactions for HCM III ACQUISITION CORP.

Showing up to 300 recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares owned	Date	Ownership
No insider transactions were found in the last 12 months for this issuer.

^* marks a reported price that did not pass the local price check.