Year archive

COLUMBIA BANKING SYSTEM, INC. — 2026 filings

All 79 regulatory filings released by COLUMBIA BANKING SYSTEM, INC. (COLB) in 2026, sourced directly from the official regulator.

79 Filings

2026 Period

2026 filings (79)

Filing	Released	Lang
8-K Regulatory Filings	2026-05-15	English
8-K Regulatory Filings	2026-05-15	English
10-Q Interim / Quarterly Report	2026-05-05	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-04-29	English
8-K Regulatory Filings	2026-04-23	English
ARS Annual Report	2026-03-31	English
DEF 14A Proxy Solicitation & Information Statement	2026-03-31	English
DEFA14A Proxy Solicitation & Information Statement	2026-03-31	English
11-K - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Regulatory Filings	2026-03-31	English
8-K - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Regulatory Filings	2026-03-31	English
SCHEDULE 13G/A - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Subject) Major Shareholding Notification	2026-03-26	English
4/A - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-21	English
4/A - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Issuer) Director's Dealing	2026-03-18	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-03-03	English
10-K - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Annual Report FY 2025	2026-02-26	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-21	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
4 - COLUMBIA BANKING SYSTEM, INC. (0000887343) (Filer) Director's Dealing	2026-02-19	English
8-K Filing Regulatory Filings	2026-02-13	English
SCHEDULE 13G Filing Major Shareholding Notification	2026-02-10	English
4 Filing Director's Dealing	2026-02-05	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-04	English
4 Filing Director's Dealing	2026-02-03	English
4 Filing Director's Dealing	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
8-K Filing Regulatory Filings	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English
4 Filing Director's Dealing	2026-01-22	English

Filings by year

2026 79 filings
2025 128 filings
2024 124 filings
2023 156 filings
2022 75 filings
2021 114 filings
2020 89 filings
2019 73 filings
2018 82 filings
2017 99 filings
2016 58 filings
2015 51 filings
2014 68 filings
2013 58 filings
2012 60 filings
2011 55 filings
2010 41 filings