Star Equity Holdings, Inc. - Common Stock, par value $0.001 per share (STRR)

Q: What does CUSIP 443787205 represent in this 13F holders report?

CUSIP 443787205 is the security identifier for STRR - Star Equity Holdings, Inc. - Common Stock, par value $0.001 per share used to aggregate holder disclosures.

Q: How many institutions held STRR - Star Equity Holdings, Inc. - Common Stock, par value $0.001 per share in Q3 2025?

23 institutional investors reported STRR - Star Equity Holdings, Inc. - Common Stock, par value $0.001 per share for Q3 2025. Use the holders table for investor-level position and value details.

CUSIP: 443787205

Q3 2025 13F Holders as of 30 Sep 2025

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 1,006,915
Total 13F value: $11,168,886
Share change: -327,044
SEC-reported price per share: $11.12
Number of holders: 23
Value change: -$3,636,324
Number of buys: 11
Number of sells: 8
Shares outstanding: 3,744,749

Security key

443787205

Report period

Q3 2025

Institutions

Top holders

STRR full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2025 Previous quarter: Q2 2025 Star Equity Holdings, Inc. SEC filings Star Equity Holdings, Inc. company facts Star Equity Holdings, Inc. 13D/G history

Broader feeds

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

Reporting periods

Holder history for CUSIP 443787205

Newer quarter: Q4 2025 Previous quarter: Q2 2025

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of STRR - Star Equity Holdings, Inc. - Common Stock, par value $0.001 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

Mink Brook Partners LP

Disclosed value leader

Mink Brook Partners LP

Comparable rows

15/15

Latest evidence

30 Sep 2025

13D/G 13F Lead comparable stake: 9.2% 13D/G row: Mink Brook Partners LP Showing 1-6 of 15 holder rows.

Quick read

Mink Brook Partners LP leads the comparable SEC ownership view at 9.2%.

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 Mink Brook Partners LP's linked filing trail.

Comparable ownership Top 5

Mink Brook Partners LP 9.2%

HEARTLAND ADVISORS INC 4.9%

VANGUARD GROUP INC 4.2%

HOTCHKIS & WILEY CAPITAL MANAGEME... 0.34%

Mink Brook Asset Management LLC 7.3%

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
Mink Brook Partners LP	13D/G Mink Brook Capital GP LLC 13D/G	9.2%	$3,496,728 314,454 shares	+$444,333	30 Sep 2025
HEARTLAND ADVISORS INC	13F 13D/G Company 13F 13D/G	4.9% from 13D/G	$1,762,370 207,094 shares	—	30 Jun 2025
VANGUARD GROUP INC	13D/G 13F The Vanguard Group · Company 13D/G 13F	4.2%	$1,718,178 149,018 shares	$0	30 Sep 2025
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	13F 13D/G Company · Hotchkis and Wiley Capital Management, LLC 13F 13D/G	0.34% from 13D/G	$2,497,898 293,525 shares	—	30 Jun 2025
Mink Brook Asset Management LLC	13F Company 13F	7.3%	$2,335,961 274,496 shares	—	30 Jun 2025
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	1.9%	$610,204 71,707 shares	—	30 Jun 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 Q3 2025

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

Institutions

1,006,915

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 Q3 2025 vs Q2 2025 Across Filers

Q2 2025 holders

Q3 2025 holders

Holder diff

Investor	Q2 2025 Shares	Q3 2025 Shares	Share Diff	Share Chg %	Q2 2025 value	Q3 2025 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend