Core Viewpoint - Columbia Banking System (COLB) is focusing on relationship deposits, funding mix shifts, and fee growth to protect its net interest margin (NIM) as the interest rate cycle changes [1] Group 1: NIM and Financial Performance - Columbia Banking's NIM improved to 3.84% in 3Q25 from 3.56% a year ago, with expectations of NIM being "just north of" 3.90% in 4Q25 and 1Q26 [2] - The bank's deposits are granular and diversified, with a focus on full-relationship funding and proactive repricing, targeting deposit betas around 50% for rate cuts to support NIM expansion [3][9] - Columbia Banking is expected to manage down $8 billion of inherited transactional loans over approximately eight quarters starting from 3Q25, reallocating towards relationship commercial and industrial (C&I) and owner-occupied commercial real estate (CRE) [5] Group 2: Strategic Initiatives and Synergies - The merger with Pacific Premier has increased cross-selling opportunities, generating over 1,200 referrals since closing, which has contributed to deposit inflows [4][9] - Management's near-term focus includes cost normalization after systems work in 1Q26 and achieving full synergy capture by 3Q26 [1] Group 3: Market Position and Competitors - Columbia Banking currently holds a Zacks Rank 3 (Hold), indicating a balanced outlook, with key points to monitor including the 1Q26 system conversion and quarterly NIM outcomes [6] - Key peers include East West Bancorp (Zacks Rank 2) and Zions Bancorporation (Zacks Rank 2), both of which are experiencing varying impacts on their NIM due to market conditions [7][8]

Core Insights - Columbia Banking System (COLB) is shifting from transactional loans to full relationship banking following the Pacific Premier acquisition, focusing on granular deposits and fee platforms to enhance earnings durability [1][9] Loan Strategy - Management plans to reduce $8 billion in inherited transactional loans, primarily multifamily, over eight quarters starting in Q3 2025, reallocating capital to relationship-driven commercial and industrial (C&I) and owner-occupied commercial real estate (CRE) [2][9] - As of September 30, 2025, C&I and owner-occupied CRE loans represented approximately 21% and 15% of total loans, respectively, with a focus on lending that enhances leverage and returns [4] Financial Performance - The net interest margin (NIM) improved to 3.84% in Q3 2025 from 3.56% a year earlier, driven by increased customer deposits and reduced reliance on higher-cost wholesale funding [3][9] - NIM is projected to reach 3.90% in Q4 2025 and Q1 2026, supported by lower funding costs from relationship deposits [6] Revenue Growth - Fee income from treasury management and commercial card services has expanded, with non-interest income from these services making up nearly 30% as of September 30, 2025 [7] - Management anticipates a high-teens operating return on tangible common equity (ROTCE) and earnings in the low $3s for 2026, aligning with synergy realization and the loan mix shift [7][10] Relationship Development - Columbia Banking has seen improvements in C&I production and pipelines, indicating the effectiveness of its new strategy, with over 1,200 cross-sell referrals generated since the Pacific Premier deal [5] - The acquisition is expected to enhance the breadth of products offered, supporting deeper customer relationships and increasing wallet share [4]