HC2 Holdings, Inc. is a holding company. The Company operates through seven segments: Manufacturing (Schuff), Marine Services (GMSL), Insurance, Telecommunications (PTGi-ICS), Utilities, Life Sciences and Other. Schuff fabricates and erects structural steel for commercial and industrial construction projects, such as high- and low-rise buildings and office complexes, hospitals, dams, bridges, mines and power plants. GMSL is an offshore engineering company focused on specialist subsea services across the market sectors, such as telecommunications, oil and gas, and offshore power. The Insurance segment, CIG, provides long-term care, life and annuity coverage to approximately 99,000 individuals through its Insurance Companies. The PTGi-ICS business unit provides customers with Internet-based protocol and time-division multiplexing (TDM) access and transport of long distance voice minutes. The Life Sciences segment focuses on the development of technologies and products in healthcare.