GLACIER BANCORP, INC.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________

Commission file number 001-41170

(Exact name of registrant as specified in its charter)

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.☒ Yes ☐No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).☒ Yes ☐No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).☐ Yes☒ No

The number of shares of Registrant’s common stock outstanding on April 14, 2026 was 130,142,654. No preferred shares are issued or outstanding.

TABLE OF CONTENTS

ABBREVIATIONS/ACRONYMS

ACL or allowance – allowance for credit losses

AFS - available-for-sale

ALCO – Asset Liability Committee

ASC – Accounting Standards Codification

ASU – Accounting Standards Update

ATM – automated teller machine

Bank – Glacier Bank

BOID - Bank of Idaho Holding Co. and its wholly owned subsidiary, Bank of Idaho

CDE – Certified Development Entity

CDFI Fund – Community Development Financial Institutions Fund

CEO – Chief Executive Officer

CFO – Chief Financial Officer

CRE - Commercial real estate

Company – Glacier Bancorp, Inc.

DDA – demand deposit account

Fannie Mae – Federal National Mortgage Association

FASB – Financial Accounting Standards Board

FDIC – Federal Deposit Insurance Corporation

FHLB – Federal Home Loan Bank

Final Rules – final rules implemented by the federal banking agencies that established a new comprehensive regulatory capital framework

FRB – Federal Reserve Bank

Freddie Mac – Federal Home Loan Mortgage Corporation

GAAP – accounting principles generally accepted in the United States of America

Ginnie Mae – Government National Mortgage Association

Guaranty - Guaranty Bancshares, Inc. and its wholly owned subsidiary, Guaranty Bank & Trust

HTM - Held-to-maturity

Interest rate locks - residential real estate derivatives for commitments

LIHTC – Low-Income Housing Tax Credit

MBFD - Modifications to borrowers experiencing financial difficulty

NMTC – New Markets Tax Credit

NOW – negotiable order of withdrawal

NRSRO – Nationally Recognized Statistical Rating Organizations

OCI – other comprehensive income

OREO – other real estate owned

PCD – purchased credit-deteriorated

Repurchase agreements – securities sold under agreements to repurchase

ROU – right-of-use

S&P – Standard and Poor’s

SEC – United States Securities and Exchange Commission

SOFR – Secured Overnight Financing Rate

TBA – to-be-announced

VIE – variable interest entity