SCHEDULE 13G/A

Star Equity Holdings Inc

Common Stock · CUSIP: 443787205

Event date: 2025-09-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Mink Brook Partners LP

  Shares: 159,378.00 · Class: 4.6%

• Mink Brook Opportunity Fund LP

  Shares: 155,076.00 · Class: 4.5%

• Mink Brook Capital GP LLC

  Shares: 314,454.00 · Class: 9.2%

• William Mueller

  Shares: 314,454.00 · Class: 9.2%

• Mink Brook Asset Management LLC

  Shares: 314,454.00 · Class: 9.2%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.