Request Deal Involvement

Columbia Banking System completed the merger with Umpqua Holdings in an $8.2bn deal.

Identify your role

Select the side you represented in this transaction, and provide your current job title.

Service Providers

Wachtell Lipton Rosen & Katz

legal advisors

Wachtell Lipton Rosen & Katz

JP Morgan

financial advisors

JP Morgan

Joele Frank

pr advisors

Joele Frank

Simpson Thacher & Bartlett

legal advisors to financial advisors

Simpson Thacher & Bartlett

Keefe Bruyette & Woods

financial advisors

Keefe Bruyette & Woods

Sullivan & Cromwell

legal advisors

Sullivan & Cromwell

or

Principals

UMPQUA HOLDINGS CORPORATION

target

UMPQUA HOLDINGS CORPORATION

COLUMBIA BANKING SYSTEM

bidder

COLUMBIA BANKING SYSTEM

Principals or Service Provider not listed?Add missing Service Provider or Principal

Enter your Job Title on this deal

This title will appear on your profile next to this deal involvement.


To help us verify your involvement, please include links to any relevant publications that mention you or your company's role in this deal:

All rights reserved. Copyright © 2025 Datasite