X0306 4 2021-09-29 1 0001636286 Altabancorp ALTA 0001754982 Jones Ryan Howard 1 E MAIN AMERICAN FORK UT 84003 0 1 0 0 Executive Officer Common Shares 2021-10-01 4 D 0 6404 D 0 D Common Shares 2021-09-29 4 P 0 9.1223 A 778.0843 I Altabancorp ESOP Common Shares 2021-10-01 4 D 0 778.0843 D 0 I Altabancorp ESOP Pursuant to the Agreement and Plan of Merger, dated as of May 18, 2021, Glacier Bancorp, Inc. (GBCI) acquired Altabancorp (ALTA) in a merger transaction (the "Merger") which became effective on October 1, 2021. At the effective time of the Merger, each share of ALTA common stock (par value $0.01 per share) converted to the right to receive 0.7971 of a share of GBCI common stock (and cash for any fractional shares). On September 30, 2021, the closing price for GBCI common stock was $55.35. Represents the reinvestment of certain dividends received by the Company's Employee Stock Ownership Plan that were reinvested in common shares of the Company and allocated to the Reporting Person. The allocation to the Reporting Person is exempt from Section 16(b) of the Exchange Act pursuant to Rule 16-3(c) thereunder. /s/ Ryan H. Jones, by Adelaide Maudsley, Attorney In Fact 2021-10-01