Star Equity Holdings, Inc. engages in the construction business in the United States and internationally. It operates through two segments: Construction, and Investments. It manufactures modular housing units, structural wall panels, permanent wood foundation systems, and other engineered wood products; supplies general contractors with building materials; holds real estate assets; and manages investments. The company was formerly known as Digirad Corporation and changed its name to Star Equity Holdings, Inc. in December 2020. Star Equity Holdings, Inc. was founded in 1985 and is headquartered in Old Greenwich, Connecticut.