Columbia Banking System Inc. – Filings and Transcripts

NASDAQ: COLB
Share price (9/8/26): $30.27
Market cap (9/8/26): $8.563 billion

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ended 06/30/26 Q2

ended 03/31/26 Q1

ended 12/31/25 FY 2025

ended 09/30/25 Q3

ended 06/30/25 Q2

Prospectuses and Registrations Filter

Registration of securities for employees

Business combination disclosure

Prospectus supplement

Details of business combination or exchange offer – amended

Details of business combination or exchange offer

Ownership Filter

Gardner Steven R

Lagomarsino Simone

Lagomarsino Simone

Wellington Management Group Llp

News Filter

Announces $0.37 Per Common Share Dividend

Appoints Simone Lagomarsino to Its Board of Directors

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

Announces Date of Second Quarter 2026 Earnings Release and Conference Call

Announces $0.37 Per Common Share Dividend

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Additional info about upcoming vote

Definitive proxy

Additional info about upcoming vote

Definitive proxy

Additional info about upcoming vote

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Scanned paper annual report submission

Notice of effectiveness

Correspondence with the SEC

Letter from the SEC

Scanned paper annual report submission