GLACIER BANCORP INC

To the Stockholders, Board of Directors, and Audit Committee

Kalispell, Montana

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated statements of financial condition of Glacier Bancorp, Inc. (the Company) as of December 31, 2023 and 2022, the related consolidated statements of operations, comprehensive income (loss), changes in stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2023, and the related notes (collectively referred to as the financial statements). In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2023, in conformity with accounting principles generally accepted in the United States of America.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), and our report dated February 23, 2024, expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits.

We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures include examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that is communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the critical audit matter or on the accounts or disclosures to which they relate.

Allowance for Credit Losses

The Company’s loan portfolio totaled $16.2 billion as of December 31, 2023, and the allowance for credit losses on loans was $192.8 million. The Company’s unfunded loan commitments totaled $3.6 billion, with an allowance for credit losses of $19.3 million. Together these amounts represent the allowance for credit losses (ACL). As more fully described in Notes 1 and 3 to the Company’s consolidated financial statements:

•For loans receivable, the ACL is a contra-asset valuation account, calculated in accordance with Topic 326 that is deducted from the amortized cost basis of loans to present the net amount expected to be collected

•For unfunded loan commitments, the ACL is a liability account calculated in accordance with Topic 326, reported as a component of other liabilities

The determination of the ACL includes a quantitative portion that calculates historical average loss rates and uses forecast assumptions and other inputs to project credit losses over the life of the loan portfolio. Additionally, the ACL requires management to exercise significant judgment and consider numerous subjective factors, including determining qualitative factors utilized to adjust the ACL for projected credit losses that the quantitative allocations portion does not factor into its consideration. As disclosed by management, different assumptions and conditions could result in a materially different amount for the ACL.

Auditing the allowance for credit loss involved a high degree of subjectivity in evaluating management’s estimates, such as evaluating management’s identification of credit quality indicators, assessment of economic conditions and other environmental factors, evaluating the adequacy of specific allowances associated with individually evaluated loans and assessing the appropriateness of loan grades and non-accrual, collateral dependent, and individually evaluated designations.

The primary procedures we performed as of December 31, 2023 to address this critical audit matter included:

•Testing the effectiveness of controls, including those related to technology over the ACL including data completeness and accuracy, classifications of loan segments, historical data, the calculation of baseline loss rates, the establishment of qualitative adjustments, identification of individually evaluated loans and risk classification of individual loans and/or loan relationships, establishment of specific reserves on individually evaluated loans and management’s review controls over the ACL balance as a whole

•Testing of completeness and accuracy of the information utilized in the ACL through testing of year-end loan balances, non-accrual and individually evaluated loan designations, gross charge-offs, and recoveries

•Testing of the Company’s ACL narrative supporting the overall ACL process in place and adjusted loss factors applied to various loan segments

•Testing of the economic inputs utilized to generate the economic forecast multipliers utilized within the quantitative portion of the ACL

•Testing the Company’s ACL model for computational accuracy

•Evaluating the qualitative adjustments to the loan segments, including assessing the basis for the adjustments and the reasonableness of the significant assumptions

•Testing the loan review functions and evaluating the accuracy of loan grades, specific reserve calculations, and non-accrual and collateral-dependent identifications

•Utilizing internal subject matter experts in the area of loan review to assist us in evaluating the appropriateness of loan grades, non-accrual, and collateral dependent loan identifications and to assess the reasonableness of specific impairments allocated to impaired loans

•Testing estimated utilization rates of unfunded loan commitments

•Evaluating the overall reasonableness of assumptions used by considering the past performance of the Company and evaluating to trends identified within the banking industry, including, but not limited to, the following:

•Timing and frequency of improvements noted in key lending ratios that are indicative of potential credit risk in the overall loan portfolio and banking industry

•Observation of trends in the Company’s overall qualitative factors to ensure directional consistency, the overall economic climate and risk trends identified in the loan portfolio

•Evaluating the relevance and reliability of the data and data sources

/s/FORVIS, LLP

We have served as the Company’s auditor since 2005.

Denver, Colorado

February 23, 2024

To the Stockholders, Board of Directors and Audit Committee

Kalispell, Montana

Opinion on the Internal Control over Financial Reporting

We have audited Glacier Bancorp, Inc.’s (the Company) internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control – Integrated Framework: (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control – Integrated Framework: (2013)issued by COSO.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements of the Company as of December 31, 2023 and 2022, and for each of the three years in the period ended December 31, 2023 and our report dated February 23, 2024, expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.

We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definitions and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of reliable financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions or that the degree of compliance with the policies or procedures may deteriorate.

/s/ FORVIS, LLP

Denver, Colorado

February 23, 2024