Diamond Matthew K 4

What Happened
Matthew K. Diamond, Chief Accounting Officer of Star Equity Holdings, Inc. (STRR), had 763 shares of common stock withheld on 2026-05-29 to satisfy tax withholding obligations related to the vesting of performance-based restricted stock units. The withholding was reported as a disposition at $11.62 per share, totaling $8,866. This was a tax-withholding action (transaction code F), not an open-market sale.

Key Details

• Transaction date: 2026-05-29; Form 4 filed: 2026-06-01 (filed within the required reporting window).
• Shares withheld/disposed: 763 at $11.62 per share; total value reported: $8,866.
• Reported beneficial ownership following the transaction: 20,175 (consisting of 4,813 Share Units under the 2009 Incentive Plan and 15,362 common shares, per the filing).
• Footnote F1: the 763 shares were withheld to satisfy tax withholding upon vesting of performance-based RSUs.
• Footnote F2: the reported ownership includes 4,813 Share Units (economic equivalents of shares) which may be settled in stock, cash, or a combination under the 2009 Plan.

Context
Tax-withholding dispositions like this are routine administrative actions when restricted stock units vest and do not represent a market sale or direct investment decision by the insider. They generally do not indicate a change in the insider’s market view of the company.