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COLUMBIA BANKING SYSTEM, INC.

For the period ended Sep 30, 2025. Filed Nov 6, 2025.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 6, 2025

COLB$30.85-0.5%Stored close · as of Nov 10, 2026

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Unregistered Sales of Equity Securities and Use of Proceeds

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(a)Not applicable

(b)Not applicable

(c)The following table provides information about repurchases of Columbia common stock by the Company during the quarter ended September 30, 2025:

PeriodTotal number of Common Shares Purchased (1)Average Price Paid per Common ShareTotal Number of Shares Purchased as Part of Publicly Announced Plan (2)Maximum Number of Shares that May be Purchased at Period End under the Plan (2)
07/01/25 - 07/31/252,961$25.04——
08/01/25 - 08/31/254,288$25.64——
09/01/25 - 09/30/252,878$25.90——
Total for quarter10,127$25.54—

(1)Common shares repurchased by the Company during the quarter consist of cancellation of 10,127 shares to be issued upon vesting of restricted stock units and awards to pay withholding taxes.

(2)As of September 30, 2025, the Company did not have a share repurchase authorization from its Board of Directors. On October 29, 2025, Columbia's Board of Directors authorized a new share repurchase program for up to $700 million of the Company's common stock, The authorization is effective through November 30, 2026. The timing and amount of common share repurchases will be at the discretion of senior management and subject to various factors, including, without limitation, Columbia’s capital position, financial performance, market conditions, and regulatory considerations.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.