The exodus of executives from American International Group Inc. provided opportunity for financial firms including Warren Buffett’s Berkshire Hathaway Inc. and David Rubenstein’s Carlyle Group LP, while raising concerns that AIG is losing valuable experience.

The insurer had to make “tough choices,” Chief Executive Officer Peter Hancock said Tuesday when asked about recent departures. “There are many people that you may have read about who have gone to work for competitors over the last nine months. But this is part of our reshaping into a more nimble, agile company.”

The table below lists some managers who left.

NameHired byNew RoleAnnounced
N. AlexandruAspenHead, crisis managementJuly
M. BeckEverestChief operations officer, Mt. LoganApril
B. BenjaminXLHead, M&A insuranceJune
Sean BerryEverestHead, international property facultativeMay
D. DelaneyKingstoneSVP, business developmentApril
John DoyleMarshPresidentMarch
Dorian GreyStarrPresident, Latin AmericaJuly
C. HawkesXLClaims manager, private clientsJuly
J. HegemanStarrPolitical risk teamApril
Jose HernandezDecember
D. HerzogAmbacBoard memberMarch
B. InselbergStarrSVP, financial linesJune
R. JohnstonQBECEO, North AmericaMay
R. KatzmanArgoChief actuaryMay
S. KennedyAllianzSVP, North America LifeFebruary
M. LoPiccoloAxisManager, U.S. distributionJune
Seraina MaagFebruary
Eric MartinezDecember
F. Mike-MayerArgoChief underwriting officerJanuary
Emma OsgoodBerkshireHead of cyber, AustraliaJuly
Ann OwenXLUnderwriting chief, private clientsJuly
David PriceCNAUnderwriting chief, CanadaAugust
Rahul SamantDelta AirChief information officerFebruary
David SandlerEverestLeader, risk managementMay
M. ScherzerEverestHead, structured solutionsJune
B. SchreiberCarlyleCo-head, financial servicesJune
M. StevensChubbChairman, aviationJune
D. ValzaniaBerkshireRegional leader, broker engagementApril
T. WilliamsAllianzRegional leader, environmental impairmentDecember

Note: Company names have been abbreviated for space.

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