COLUMBIA BANKING SYSTEM, INC. REPORTS SECOND QUARTER 2026 RESULTS

$208 million $217 million $0.73 $0.76 Net income Operating net income1 Earnings per common share - diluted Operating earnings per common share - diluted1 CEO Commentary "Our second quarter results demonstrate the resilience of our franchise and reflect the value of disciplined execution across the company," said Clint Stein, Chairman, CEO & President. "While the operating environment remains dynamic, we continued to execute on our strategic priorities through prudent expense management, ongoing balance sheet optimization, and consistent capital returns to shareholders. Commercial loan balances continued to grow, reflecting the strength of our customer relationships and the trust we have built across our markets. We also continued to reposition the balance sheet in ways that support stronger long-term performance. Supported by our diversified business model, sound credit culture, and strong capital generation, we remain committed to delivering sustainable returns and creating