Star Equity Holdings, Inc.

General Star Equity Holdings, Inc. is a diversified multi-industry holding company operating through four reportable segments: Building Solutions, Business Services, Energy Services, and Investments. Its common stock and 10% Series A Cumulative Perpetual Preferred Stock are listed on the Nasdaq Global Market under the symbols "STRR" and "STRRP," respectively. The Building Solutions segment operates in the construction industry. The Business Services segment, consisting of Hudson Talent Solutions, LLC, provides customized recruitment and contracting solutions to mid-to-large multinational companies. These solutions include Recruitment Process Outsourcing (RPO), project-based RPO, contingent workforce solutions, recruitment consulting, outsourced professional contract staffing, and managed service provider (MSP) services. The Energy Services segment, consisting of Alliance Drilling Tools, Inc., manufactures and supplies specialized drilling tools and downhole equipment. This equipment is used in directional drilling for oil and gas well construction, as well as in other applications such as mining, geothermal, and water wells. The Investments segment holds and manages certain corporate-owned real estate assets and investments in a limited number of publicly traded and private companies. On August 22, 2025, Star completed its acquisition of Star Operating Companies, Inc.