X0609 4 2026-03-25 0 0001210708 Star Equity Holdings, Inc. STRR 0002029470 Fruhbeis Todd Michael false STAR EQUITY HOLDINGS, INC. 53 FOREST AVENUE, SUITE 101 OLD GREENWICH CT 06870 1 0 0 0 0 Common Stock 2026-03-25 4 M 0 460 A 10673 D Common Stock 2026-03-25 4 P 0 500 9.76 A 11173 D Common Stock 2026-03-25 4 P 0 300 9.82 A 11473 D Common Stock 2026-03-26 4 P 0 500 10.15 A 11973 D Common Stock 2026-03-26 4 P 0 300 10.17 A 12273 D Common Stock 2026-03-27 4 P 0 500 10.10 A 12773 D Common Stock 2026-03-27 4 P 0 300 10.15 A 13073 D Restricted Stock Unit 2026-03-25 4 M 0 460 D Common Stock 460 0 D Each Restricted Stock Unit represents the right to receive, at settlement, one share of common stock. This transaction represents the settlement of Restricted Stock Units in shares of common stock on their scheduled vesting date. Includes 7,012 Restricted Stock Units credited to the Reporting Person's account under the Issuer's 2009 Incentive Stock and Awards Plan, as amended and restated. Each Restricted Stock Unit represents the right to receive, at settlement, one share of Common Stock payable upon the first anniversary of the Grant Date. On March 25, 2025, the Reporting Person was granted Restricted Stock Units by Star Operating Companies, Inc. ("SOC"), each of which represented the right to receive, at settlement, one share of SOC common stock ("SOC RSUs"). Pursuant to the Agreement and Plan of Merger, dated as of May 21, 2025, by and among SOC, the Issuer and HSON Merger Sub, Inc., a wholly owned subsidiary of the Issuer, the Reporting Person's SOC RSUs were exchanged for 460 Restricted Stock Units. As to this grant, one hundred percent (100%) of the Restricted Stock Units vested on March 25, 2026. /s/ Hannah Bible, as Attorney-in-Fact for Todd Fruhbeis 2026-03-27