GLACIER BANCORP INC

Evaluation of Disclosure Controls and Procedures

An evaluation was carried out under the supervision and with the participation of the Company’s management, including the CEO and Chief Financial Officer (“CFO”), of the effectiveness of the disclosure controls and procedures. Based on that evaluation, the CEO and CFO have concluded that as of the end of the period covered by this report, the disclosure controls and procedures are effective to provide reasonable assurance that information required to be disclosed by the Company in reports that are filed or submitted under the Securities Exchange Act of 1934 are recorded, processed, summarized and timely reported as provided in the SEC’s rules and forms. As a result of this evaluation, there were no significant changes in the internal control over financial reporting during the year ended December 31, 2024 that have materially affected, or are reasonable likely to materially affect, the internal control over financial reporting.

Management’s Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining effective internal control over financial reporting as it relates to its financial statements presented in conformity with GAAP. The Company’s internal control system was designed to provide reasonable assurance to the Company’s management and Board of Directors regarding the preparation and fair presentation of published financial statements in accordance with GAAP. Internal control over financial reporting includes self-monitoring mechanisms and actions are taken to correct deficiencies as they are identified.

There are inherent limitations in any internal control, no matter how well designed, misstatements due to error or fraud may occur and not be detected, including the possibility of circumvention or overriding of controls. Accordingly, even an effective internal control system can provide only reasonable assurance with respect to financial statement preparation. Further, because of changes in conditions, the effectiveness of an internal control system may vary over time.

Management assessed its internal control structure over financial reporting as of December 31, 2024. This assessment was based on criteria for effective internal control over financial reporting described in the “2013 Internal Control – Integrated Framework” issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this assessment, management asserts that the Company maintained effective internal control over financial reporting as it relates to its financial statements presented in conformity with GAAP.

Forvis Mazars, LLP, Denver, Colorado, (U.S. PCAOB Auditor Firm ID 686), the independent registered public accounting firm that audited the financial statements for the year ended December 31, 2024, has issued an audit report on the Company’s internal control over financial reporting. Such audit report expresses an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2024 and is included in “Item 8. Financial Statements and Supplementary Data.”