Who owns Star Equity Holdings, Inc., from the filings themselves: stakes over 5% (Schedule 13D/G), the institutional managers reporting the stock each quarter (13F), and the funds holding it (N-PORT).
Investors crossing 5% ownership must disclose it. Schedule 13G filers certify the stake is passive; Schedule 13D is the general form for everyone else — founders, strategic holders, and activists alike. Each entry is the holder's most recent disclosure. Coverage begins with SEC's structured filings from December 18, 2024; a holder appears once they file or amend after that date.
JEFFREY E. EBERWEIN: 30.7% · 1,149,289 shares
Mink Brook Partners LP: 4.6% · 159,378 shares — Mink Brook Opportunity Fund LP: 4.5% · 155,076 shares — Mink Brook Capital GP LLC: 9.2% · 314,454 shares
3 more 5% stakes behind a free account
See every investor who has disclosed crossing 5% of Star Equity Holdings, Inc..
Sign up freeEvery institutional manager whose latest 13F reports this stock, largest position first. "% of their portfolio" is the weight inside that manager's own book — how much conviction the position represents; "% of company" is how much of Star Equity Holdings, Inc. they hold. Together these 34 managers report 32.90% of shares outstanding.
| Investor | Position value | Shares | % of their portfolio | % of company | As of |
|---|---|---|---|---|---|
| Mink Brook Asset Management LLC | $3.37M | 316,139 | 1.49% | 8.57% | June 30, 2026 |
| VANGUARD GROUP INC | $1.73M | 153,630 | 0.00% | 4.16% | December 31, 2025 |
32 more institutional holders behind a free account
See every manager reporting Star Equity Holdings, Inc., how much of the company they hold, and how big the position is inside their own portfolio.
Sign up freeFunds disclosing this stock in their monthly N-PORT portfolio, with the position's share of the fund's net assets. Together these 20 funds hold 10.65% of shares outstanding — counted inside the manager totals above, not on top of them, since a fund's shares also appear in its manager's 13F.
| Fund | Position value | % of net assets | % of company | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND | $1.12M | 0.00% | 2.86% | June 30, 2026 |
| Perritt MicroCap Opportunities Fund | $565K | 0.91% | 1.49% | January 31, 2026 |
18 more funds behind a free account
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