HOLDCO ASSET MANAGEMENT RELEASES PRESENTATION TO COLUMBIA BANKING SYSTEM, INC.

Core Viewpoint - HoldCo Asset Management, LP has expressed its intention to remain a long-term shareholder of Columbia Banking System, Inc. following recent concessions made by the Board and management, indicating a focus on monitoring the company's actions and capital allocation decisions [2]. Group 1: Company Overview - HoldCo Asset Management, LP is a Florida-based investment firm managing approximately $2.6 billion in regulatory assets under management [1][3]. - The firm was founded by Vik Ghei and Misha Zaitzeff [3]. Group 2: Shareholder Intentions - HoldCo disclosed ownership of common stock in Columbia Banking System, Inc., indicating an economic interest in the price of these securities [1]. - The firm does not intend to pursue a proxy contest at the 2026 Annual Meeting due to recent concessions from the Board and management [2]. - However, HoldCo has stated that it will take necessary actions to protect shareholder rights and drive value if the Board's actions are inconsistent with their expectations [2].