Hamilton Insurance Group, Ltd.

Overview

Hamilton Insurance Group, Ltd. is a Bermuda-headquartered global specialty insurance and reinsurance company founded in 2013. Its stated purpose is to deliver value to shareholders, employees and clients, with an emphasis on sustainable underwriting profitability.[1]

The company operates through Hamilton Global Specialty, Hamilton Select and Hamilton Re, across International and Bermuda reporting segments. Its business spans commercial specialty and casualty insurance, excess-and-surplus casualty coverage, and property, casualty and specialty reinsurance. Hamilton writes business globally, with listed offices and teams in Bermuda, Dublin, London and several U.S. cities.[2]+5

For the year ended December 31, 2025, Hamilton reported $2.9 billion in gross premiums written. This is an underwriting-volume measure, not revenue.[8] [2]+7

Products & services

Hamilton’s International platform offers commercial specialty and casualty insurance for medium and large accounts through Hamilton Global Specialty, and U.S. excess-and-surplus casualty cover for small and mid-sized commercial accounts through Hamilton Select. Its property products include all-risks, business-interruption and machinery-breakdown cover, natural-peril protection, and direct, facultative and binder business, including flood and earthquake difference-in-conditions cover.[9]+4

Casualty offerings include financial-institution, professional-indemnity, medical-malpractice, directors-and-officers, environmental and pollution-liability, excess-casualty, and energy-liability cover, alongside M&A warranty-and-indemnity, contingent-risk and cyber-liability products. Cyber coverage can include hardware or software replacement, voluntary shutdown and ransom costs, with optional technology errors-and-omissions, card-fine and cybercrime protection. Specialty products include accident and health, cargo and stock-throughput, political-risk and violence, fine art and specie, marine hull and war, and marine and energy liability cover.[14]+12

Hamilton’s Bermuda platform, comprising Hamilton Re and Hamilton Re US, writes property, casualty and specialty reinsurance worldwide on proportional and excess-of-loss bases.[27]+2 In FY2025, gross premiums written were $2,923.145 million: 52% in International and 48% in Bermuda. International premiums by class were 16% property, 41% casualty and 43% specialty.[30]+4 [9]+25

Geographic presence

In the six months ended June 30, 2026, Hamilton Insurance Group reported gross premiums written of $863.0 million in its International segment and $908.2 million in its Bermuda segment—approximately 48.7% and 51.3% of the total, respectively. These are segment figures, not a country-by-country breakdown.[33] For full-year 2025, the reported split was 52% International and 48% Bermuda.[30]+2

Its named operating platforms include Hamilton Managing Agency and Hamilton Insurance DAC in Ireland within International, and Hamilton Re in Bermuda within the Bermuda segment; Hamilton Select writes U.S. excess and surplus business.[30]+3 The company describes business across the U.S. and North America, the UK and Europe, Canada and the Caribbean, Australia and Australasia, Latin America, the Middle East, South Africa and Asia, with some classes characterized as worldwide.[11]+6

Hamilton lists offices in Bermuda, Dublin, London, Miami and Richmond, Virginia, and identifies teams in New York.[7][36] Its 2025 annual report states that it has more than 600 employees, but does not provide a geographic distribution of staff.[37] [33]+15

Business segments

Hamilton Insurance Group reports two business segments: International and Bermuda. International comprises Hamilton Global Specialty, focused mainly on commercial specialty and casualty insurance and specialty reinsurance, and Hamilton Select, which writes U.S. domestic excess-and-surplus insurance for small- to mid-sized clients. For the six months ended June 30, 2026, International contributed approximately 49% of gross premiums written and 51% of net premiums earned.[38]+2

Bermuda comprises Hamilton Re, which writes global property, casualty and specialty reinsurance. For the same period, Bermuda contributed approximately 51% of gross premiums written and 49% of net premiums earned. Bermuda generated about 81% of the segments’ combined underwriting income; International generated about 19%.[38]+2 [38]+4

Company history

Hamilton Insurance Group was founded in Bermuda in 2013 and completed its acquisition of S.A.C. Re that December, renaming the reinsurer Hamilton Re. In 2015, it expanded into the Lloyd’s market by acquiring Sportscover Managing Agency and Syndicate 3334.[1]+2

Pina Albo was appointed CEO in 2017 and took up the role in January 2018. In 2019, Hamilton agreed to acquire Pembroke Managing Agency and Ironshore Europe DAC from Liberty Mutual, completing the acquisition in August.[43]+3

In 2022, Hamilton formed Hamilton Select Insurance Inc. to enter the U.S. excess-and-surplus-lines market. The company launched its initial public offering in November 2023, and its shares began trading on the New York Stock Exchange as HG.[47]+2 [44]+9

Sources

• www.hamiltongroup.com[1]
• Hamilton Insurance Group, Ltd. — Full financial report (2025 Y)
  29 citations

  [2][3][4][5][6][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][30][31][32][34]
• www.hamiltongroup.com[7]
• www.hamiltongroup.com[28]
• www.hamiltongroup.com[29]
• Hamilton Insurance Group, Ltd. — Full financial report (2026 Q 2)
  5 citations

  [33][35][38][39][40]
• www.hamiltongroup.com[36]
• www.sec.gov[37]
• www.prnewswire.com[41]
• www.hamiltongroup.com[42]
• www.hamiltongroup.com[43]
• Hamilton Insurance Group, Ltd. — Ipo (2023 O)[44]
• www.hamiltongroup.com[45]
• www.hamiltongroup.com[46]
• www.hamiltongroup.com[47]
• www.hamiltongroup.com[48]
• www.hamiltongroup.com[49]