Tower Group Companies

Tower Group disclosed $365 million in prior-year reserve deficiencies in mid-2013. The shortfall traced to acquired workers' compensation and general liability books where claims costs significantly exceeded original estimates. Multiple earnings restatements followed, A.M. Best downgraded the firm to non-investment grade, and shareholders were wiped out in the subsequent recapitalization and forced sale to AmTrust.

Michael Lee led Tower through its early acquisition phase and IPO. Mark Thompson served as CEO from 2010 until his resignation in August 2013 following the reserve charge disclosure. William Fox stepped in as interim CEO during the restructuring and run-off negotiations.

Tower reported roughly $2.4 billion in total invested assets at year-end 2012, just before the reserve deficiency emerged. The portfolio was concentrated in fixed-income securities managed internally by the company's investment team, per its regulatory filings.

AmTrust Financial Services acquired the remnants of Tower Group in August 2014 for $179 million in a transaction facilitated by the New York Department of Financial Services. The deal included renewal rights, unearned premium, and certain admitted assets after a multi-creditor restructuring led by Angelo Gordon.

Tower was an insurance company—specifically a publicly traded property and casualty holding company. Its investment portfolio supported policyholder reserves and was not managed as a third-party asset management business. The firm wrote direct insurance through multiple wholly owned subsidiaries.