Transaction Details

Footnotes

Represents the acquisition of 96,821 shares of common stock underlying Restricted Stock Units that were accelerated and fully vested in connection with the Agreement and Plan of Merger (the "Merger Agreement"), dated as of April 23, 2025, by and among Columbia Banking System, Inc. ("Columbia"), Pacific Premier Bancorp, Inc. (the "Issuer") and Balboa Merger Sub, Inc., pursuant to which the Issuer plans to merge with and into Columbia on or about September 1, 2025. | Each dividend equivalent right is the economic equivalent of one share of common stock. Dividend equivalent rights accrue on the reporting person's Restricted Stock Units and become vested proportionately with the Restricted Stock Units. | On August 27, 2025, the reporting person transferred 170,749 directly owned shares of Issuer common stock to The Nicolas Living Trust under agreement date 8/8/2006 (the "Trust"), Ronald J. Nicolas, Jr., Co-Trustee. The reporting person shares voting and dispositive control over shares held by the Trust. | These shares are held by the Trust, Ronald J. Nicolas, Jr., Co-Trustee. The reporting person shares voting and dispositive control over shares held by the Trust. | Each Restricted Stock Unit represents the right to receive one share of common stock. Performance metrics, terms and/or conditions to which these Restricted Stock Units were originally subject were deemed, pursuant to the Merger Agreement, to have been achieved or satisfied, as applicable, at the target levels. | Not applicable.