We use cookies to deliver our online services. Details of the cookies we use and instructions on how to disable them are set out in our Cookies Policy. By using this website you agree to our use of cookies. To close this message click close.

Sean Thomas Keely

New York

Sean Thomas Keely

Even while a first-year law student, Sean Keely was involved in (re)insurance litigation as an intern with a firm handling reinsurance and insurance insolvency matters. Over 20 years later, Sean brings that deep industry knowledge to bear as a partner in the New York office of Hogan Lovells, litigating and arbitrating commercial disputes with a particular focus on the (re)insurance industry.

Clients seek out Sean because he knows the industry and the issues clients face, and because he knows how to take cases to trial when necessary to win them. He has successfully tried cases to verdict in U.S. state and federal courts, and to final award in arbitration for clients based in the U.S., London, Continental Europe, and Asia.

Over the past several years, Sean has been at the center of cases addressing developing issues in the industry, including late notice, allocation and aggregation of losses, follow-the-settlements, breaches of the duty of utmost good faith, material misrepresentation, and insurer insolvency. Sean has been a ranked lawyer in Chambers USA for Insurance Dispute Resolution for 2014 and 2015, and he has been listed in Who's Who Legal Insurance and Reinsurance for 2012 through 2015.

Sean is also a member of the Education Committee of AIDA Reinsurance and Insurance Arbitration Society (ARIAS-US), and has presented at and chaired seminars and workshops for certified reinsurance arbitrators and industry practitioners.

Beyond the (re)insurance arena, Sean has litigated and arbitrated complex disputes for financial services providers, energy companies, major manufacturers, and beverage companies.

"Clients describe [Sean] as an 'impressive analytical man' who is an 'outstanding insurance dispute resolution lawyer, always on top of the facts and ahead of the opponent'."

Chambers USA 2014

Representative Experience

Won a federal jury trial for a European reinsurer on a fraudulent inducement claim, with a US$34.5m verdict, including punitive damages.

Won a federal court decision establishing the availability of late notice defense to reinsurer under California law without the need to show prejudice.

Won a defense verdict for an insurer finding no coverage for environmental clean-up costs following a bench trial in New Jersey state court.

Successfully represented London-market reinsurers in arbitration defending against US$50m of billings arising from asbestos, mass tort losses.

Winning summary judgment for reinsurers recovering nearly US$10m in interest on subrogation recoveries the cedent had wrongfully withheld.

Establishing procedures in insurance insolvency proceeding for reinsurers to interpose defenses to policyholder claims submitted to insolvent estate.

Representing energy company pursuing claims against oil and gas field service provider for breaching contract to supply well stimulation services.

Counsel to multinational energy company in government investigation of alleged complicit liability for war crimes committed by African state military.

Education and admissions


  • J.D., cum laude, New York University School of Law, 1997
  • A.B., magna cum laude, Georgetown University, 1993


  • Education Committee Member, AIDA Reinsurance & Insurance Arbitration Society (US)
  • Member, Association of the Bar of the City of New York

Bar admissions and qualifications

  • New York


Insurance: Advice to Insurers

Legal 500 US

Latest thinking and events

View More
Loading data