Ms. Studenmund s experience includes 20 years of executive banking experience, having been a managing committee member and leading retail banking and business banking, primarily at First Interstate of California (now Wells Fargo), where she began as the Chief Marketing Officer. She then became Executive Vice President and Head of Retail and Business Banking for Home Savings of America and Great Western Bank, following the acquisition of First Interstate. After her banking career, Ms. Studenmund pivoted to digital businesses as President and Chief Operating Officer of PayMyBill.com, an early consumer platform acquired by Paytrust, and next as Chief Operating Officer of Overture Services, the successful, publicly traded pioneer of paid search advertising. She played a key role in positioning Overture for its $1.6 billion acquisition by Yahoo!, demonstrating strong operating, financial, and mergers and acquisitions experience. Ms. Studenmund also brings significant corporate governance experience. She has served on the boards of directors of Pacific Premier (former Nasdaq: PPBI; 2019-2025, until its acquisition by Columbia), ExlService Holdings (Nasdaq: EXLS; 2018-2025) and CoreLogic (Nasdaq: CLGX; 2012-2021). Reason for Nomination: Ms. Studenmund brings extensive executive and public board expertise in strategy, operations, change management, and mergers and acquisitions, developed over four decades of executive leadership across the financial services, digital analytics and health care industries. Her in-depth background leading major consumer and business banking franchises during periods of regulatory change, rapid innovation, growth, market transformation, and mergers and acquisitions strengthens the Board s ability to guide Columbia s growth strategies. Committee Assignments: Compensation Committee, Nominating and Governance Committee Education: Bachelor s Degree in Economics, Wellesley College; Master of Business Administration, Harvard Business School Other Public Board Directorships: Select funds for Franklin Templeton s Western Asset Management (2004-present) Independent Age: 71 Director Since: 2025