Siobhan O'Brien – Biography

Last update: 29 days ago

Executive profile

Siobhan was Managing Director, Cyber Centre of Excellence Leader at Guy Carpenter, and UK Cyber Placement Leader at Marsh UK. Siobhan O'Brien joined MS&AD in 2025.

Siobhan O'Brien is currently

Head of Cyber Insurance at MSIG North America - View - MSIG North America org chart



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  • In the Insurance industry, Siobhan O'Brien has 69,240 colleagues in 3,978 companies located in 106 countries. 20,957 executive movements have been recorded in the last 12 months. Learn more about Insurance.

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Through the switchboard, call MSIG North America at +1 908... and ask for Siobhan O'Brien.

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