OneWest Bank

OneWest Bank, N.A.
Company typeSubsidiary
IndustryBanking
FoundedMarch 19, 2009 (2009-03-19)
FoundersSteven Mnuchin
(via IMB Holdco)
DefunctJuly 15, 2022 (2022-07-15)
Headquarters
Area served
Southern California
ParentFirst Citizens BancShares
Websitewww.firstcitizens.com

OneWest Bank is a former US regional bank that operated from March 2009 to July 2022, when it became a division of First Citizens BancShares. With over 60 retail branches in Southern California. OneWest Bank specialized in consumer deposit and lending. OneWest also offered small business services, loans, and treasury management products.