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 Q1 2026?

25 institutional investors reported STRR - Star Equity Holdings, Inc. - Common Stock, par value $0.001 per share for Q1 2026. Use the holders table for investor-level position and value details.

CUSIP: 443787205

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 930,944
Total 13F value: $9,569,768
Share change: -13,977
SEC-reported price per share: $10.28
Number of holders: 25
Value change: -$178,936
Number of buys: 8
Number of sells: 10
Shares outstanding: 3,743,612

Security key

443787205

Report period

Q1 2026

Institutions

Top holders

STRR full security history Ownership snapshot Full 13F holder table Previous quarter: Q4 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

Previous quarter: Q4 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 Asset Manageme...

Comparable rows

15/15

Latest evidence

31 Mar 2026

13D/G 13F 3/4/5 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%

Jacob Zabkowicz 4.8%

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	13D/G 13F Company 13D/G 13F	4.9%	$1,451,670 170,584 shares	$0	25 Aug 2025
VANGUARD GROUP INC	13F 13D/G Company · The Vanguard Group 13F 13D/G	4.2% from 13D/G	$1,728,337 153,630 shares	—	31 Dec 2025
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	13F 13D/G Company · Hotchkis and Wiley Capital Management, LLC 13F 13D/G	0.34% from 13D/G	$134,100 11,920 shares	—	31 Dec 2025
Jacob Zabkowicz	3/4/5 CEO Hudson Talent SolutionsLLC 3/4/5	4.8%	$1,918,956 180,863 shares	+$1,592	31 Mar 2026
Shawn S. Miles	3/4/5 Executive Vice President 3/4/5	0.21%	$88,863 7,899 shares	—	25 Mar 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.

13F holder rows

Institutional holders as of Q1 2026

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

Institutions

930,944

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

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