A small, diversified holding company akin to a mini Graham Holdings, but with operating businesses focused on specialized medical imaging and modular construction.

• Diagnostic Imaging Services: Provides imaging services primarily to cardiologists, internal medicine physicians, and family practice doctors.
• Diagnostic Imaging Systems: Sells nuclear cardiac and general-purpose nuclear imaging systems, including solid-state gamma cameras, to healthcare providers.
• Imaging Camera Maintenance: Offers maintenance contract services for its diagnostic imaging cameras.
• Modular Construction Products: Manufactures modular housing units, structural wall panels, and permanent wood foundation systems.
• Building Materials Supply: Supplies general contractors with a range of building materials.
• Real Estate Assets: Holds and manages real estate properties as part of its investment portfolio.
• Investment Management: Manages various investments across different sectors.

Star Equity Holdings, Inc. (STRR) primarily sells its products and services to other companies and organizations, rather than individual consumers. Based on the company description, its major customer categories include:

• Medical Practices and Physician Offices: This includes cardiologists, internal medicine physicians, and family practice doctors who utilize STRR's diagnostic imaging services and purchase imaging systems.
• Hospitals: Hospitals are customers for STRR's imaging systems, including nuclear cardiac and general purpose nuclear imaging systems, as well as related maintenance services.
• General Contractors and Homebuilders: Through its Construction segment, Star Equity manufactures and supplies modular housing units, structural wall panels, engineered wood products, and building materials to general contractors and homebuilders.

Jeffrey Eberwein, Chief Executive Officer

Jeffrey Eberwein has over 25 years of Wall Street experience and is the Founder and CEO of Lone Star Value Management (LSVM), a U.S. investment advisory firm, which was purchased by Star Equity Holdings in 2019. Prior to founding LSVM in January 2013, he served as a Portfolio Manager at Soros Fund Management from 2009 to 2011 and Viking Global Investors from 2005 to 2008. Mr. Eberwein became CEO of Hudson Global, Inc. in April 2018 and has been on its Board since May 2014. He previously served as Chairman of the Board for AMERI Holdings, Inc., ATRM Holdings, Inc. (a modular building company), and Crossroads Systems, Inc. Mr. Eberwein also served as a director of NTS, Inc. until its sale to a private equity firm in June 2014.

Matthew K. Diamond, Principal Financial Officer & Chief Accounting Officer

Matthew K. Diamond has served as the Principal Financial Officer and Chief Accounting Officer of Star Equity Holdings, Inc. since September 2025. He previously held the title of Chief Financial Officer of the Company from January 2020. Before his CFO role, Mr. Diamond was the Company's Vice President of Finance since January 2019. Prior to joining Star Equity Holdings, he held various finance and control roles at PepsiCo, Inc. from 2001 to 2018 and began his career as a Supervisory Senior Auditor with Arthur Andersen LLP.

Hannah Bible, Chief Legal Officer, Chief Compliance Officer and Corporate Secretary

Hannah Bible is the Chief Legal Officer at Star Equity Holdings, Inc., and was appointed Chief Compliance Officer and Corporate Secretary on September 2, 2025. She possesses over 20 years of combined legal and accounting experience across various industries. Ms. Bible previously served as in-house counsel and corporate secretary to Star's subsidiaries, CFO to Lone Star Value Management, LLC, and Vice President, Finance to ATRM Holdings, Inc. (a predecessor company).

Shawn S. Miles, Executive Vice President – Finance

Shawn S. Miles was appointed Executive Vice President – Finance of Star Equity Holdings, Inc. on September 2, 2025. Prior to this role, he was the Senior Vice President – Finance & Strategy at Star. Mr. Miles originally joined Lone Star Value Management in 2016 as a Research Analyst, where he was responsible for securities analysis across various sectors and investment strategies.

Key Business Risks for Star Equity (STRR)

1. Reliance on a Limited Number of Key Customers: Star Equity faces a significant risk due to its dependence on a small number of major clients. As of December 31, 2021, two clients alone accounted for 10% or more of the company's accounts receivable. The loss of these key customers, or a material reduction in the business conducted with them, could have a substantial adverse effect on Star Equity's financial condition and results of operations.
2. Risks Related to International Operations and Foreign Currency Exchange: A considerable portion of Star Equity's revenue is generated outside the United States, with approximately 76% of its revenue for the year ended December 31, 2022, earned internationally. This exposes the company to both translation and transaction risks associated with foreign currency exchange rate fluctuations, which could materially affect its financial results.
3. Ability to Preserve and Monetize Net Operating Losses (NOLs): Star Equity holds significant U.S. federal income tax net operating loss carryforwards (NOLs), amounting to approximately $43.2 million as of December 31, 2023. The company's ability to utilize these NOLs to offset future taxable income and reduce federal income tax obligations could be substantially limited if an "ownership change" occurs under Section 382 of the Internal Revenue Code. Star Equity has adopted a Rights Agreement specifically designed to deter such ownership changes and preserve the value of these tax benefits.

Healthcare Solutions

• Diagnostic Services: The U.S. diagnostic imaging services market, which includes the imaging services offered by Star Equity, was valued at approximately USD 140.25 billion in 2024. This market is projected to grow to around USD 276.31 billion by 2034, demonstrating a Compound Annual Growth Rate (CAGR) of 7.04% from 2025 to 2034. Similarly, another report indicates the U.S. diagnostic imaging services market size was USD 140.21 billion in 2024, with projections to reach USD 239.74 billion by 2032 at a CAGR of 7.0%.
• Diagnostic Imaging Systems (Nuclear Cardiac & General Purpose Nuclear Imaging Systems): The United States nuclear imaging market was estimated at USD 3.10 billion in 2024 and is expected to reach USD 4.40 billion by 2033, with a CAGR of 3.70% during 2025-2033. Another source valued the U.S. nuclear imaging market at USD 3.32 billion in 2026, projected to reach USD 4.02 billion by 2031 at a CAGR of 3.89%. Specifically, the global nuclear cardiology market, encompassing nuclear cardiac imaging systems, is projected to reach USD 5.1 billion by 2034, growing at a CAGR of 7.5% from 2025.
• Solid-State Gamma Cameras: The U.S. mobile gamma cameras market, which includes solid-state gamma cameras, was estimated at USD 28.8 million in 2024 and is projected to grow to USD 38.0 million by 2030, at a CAGR of 4.8%. The global gamma camera market was valued at $794 million in 2025 and is projected to grow to $941.347 million by 2033, with a CAGR of 3.8% from 2025 to 2033. The U.S. gamma cameras market sales revenue was approximately $134.725 million in 2025.

Construction

• Modular Housing Units: The U.S. modular construction market was valued at USD 20.3 billion in 2024 and is forecast to reach USD 25.4 billion by 2029, growing at a CAGR of 4.5%. Another report estimates the U.S. prefabricated housing market to reach USD 36.139.5 million in 2024, with a projection to reach USD 60,027.9 million by 2033 at a CAGR of 5.8%.
• Structural Wall Panels: The U.S. structural insulated panels (SIPs) market, which includes structural wall panels, was valued at USD 162.1 million in 2024. The global structural insulated panels market size was valued at USD 593.1 million in 2024 and is estimated to grow at a CAGR of over 6.5% from 2025 to 2034. Another source stated the U.S. structural insulated panels market size was an estimated USD 9.28 billion in 2023, and is projected to reach USD 15.19 billion by 2032. The global wall panels market was valued at USD 19.46 billion in 2026 and is projected to reach USD 27.36 billion by 2035, with a CAGR of 4.3%. The United States wall panels market size is projected at USD 3.32 billion in 2025.
• Engineered Wood Products: The global engineered wood market was estimated at USD 338.4 billion in 2024 and is expected to reach USD 504.1 billion by 2030, growing at a CAGR of 6.8%. Another report calculates the global engineered wood market size at USD 282.96 billion in 2025, with a projection to increase to approximately USD 451.16 billion by 2034, expanding at a CAGR of 5.32% from 2025 to 2034. The U.S. engineered wood market is projected to grow at a 7.21% CAGR from 2025 to 2035.