Columbia Banking System to Present at the Barclays Global Financial Services Conference

Group 1 - Columbia Banking System, Inc. will participate in the Barclays 23rd Annual Global Financial Services Conference on September 10, 2025, at 11:15 a.m. ET [1] - A live audiocast of the presentation will be available on the company's investor relations website [2] - Columbia Banking System is headquartered in Tacoma, Washington, and is the parent company of Columbia Bank, which is the largest bank headquartered in the Northwest with over $50 billion in assets [3] Group 2 - Columbia Bank offers a full suite of services including retail and commercial banking, Small Business Administration lending, institutional and corporate banking, and equipment leasing [3] - Customers of Columbia Bank have access to investment and wealth management services through Columbia Wealth Advisors and Columbia Trust Company [3]