COLUMBIA BANKING SYSTEM, INC. — Form 8-K

Columbia Banking System reported Q2 2026 net income of $208 million ($0.73 diluted EPS) versus $192 million in Q1 2026. Net interest income declined $5 million to $589 million; NIM compressed 3 bps to 3.93%, largely due to $4 million interest income reversals. Non-interest income rose $5 million to $88 million on higher treasury management and card-based fees. Non-interest expense fell $19 million to $375 million. Pacific Premier acquisition integration completed; two deposit campaigns generated ~$1.25B new deposits. Loan portfolio $47.2B (down $531M), deposits $52.1B (down $1.4B), with intentional runoff of below-market transactional loans and wholesale deposits. Book value $26.70/share; tangible book value $19.22/share. Capital ratios: CET1 11.6%, total risk 13.4%. Repurchased 6.6M shares ($199M) at $29.93 average.