Star Equity Holdings, Inc.

All of the Company’s offices are located in leased premises, with the exception of the properties owned by ADT. Our principal executive office and headquarters is located at 53 Forest Avenue, Suite 101, Old Greenwich, CT 06870, where we occupy space with approximately 4,000 aggregate square feet.

Our Building Solutions businesses utilizes 6 facilities, including (i) an 85,000 square foot office/manufacturing/warehouse space in South Paris, Maine, which the Company sold and immediately leased back in 2024; (ii) a 89,000 square foot manufacturing facility in Colfax, Wisconsin; (iii) a 10,800 square foot office/sales/showroom space in Oakdale, Minnesota; (iv) a 34,200 square foot production facility in Prescott, Wisconsin, which the Company sold and immediately leased back in 2024; (v) a facility containing 22,800 square feet of lumberyard/warehouse space in Hudson, Wisconsin; and (vi) a 22,300 square foot lumberyard/warehouse/showroom space in Big Lake, Minnesota. The latter property was sold and immediately leased back in July 2024. We also hold a non-operating building in Oxford, Maine with 90,000 square feet.

In our Business Services segment, the Company maintains offices in the Americas, Asia Pacific, and EMEA. In the Americas, the Company maintains 1 leased location with approximately 2,600 aggregate square feet; in Asia Pacific, the Company maintains 5 leased locations with approximately 18,900 aggregate square feet; and in EMEA, the Company maintains 1 leased location with approximately 3,600 aggregate square feet.

Within the Energy Services segment, ADT owns a 21,400 square foot property in Evanston, Wyoming, a 6,950 square foot property in Vernal, Utah, and a 5,000 square foot property in Midland, Texas.

All leased space is considered to be adequate for the operation of our business, and no difficulties are foreseen in meeting any future space requirements. See Note 11. Leases and Note 23. Subsequent Events for further detail on our leases.