COLUMBIA BANKING SYSTEM, INC.

Nasdaq:COLB

State Commercial Banks·TACOMA, WA

CEO

Stein Clint

Financials

20 shown

Type	Period	Ended	Filed
10-K	FY 2025	12/31/25	2/26/26	→
10-Q	Q3 2025	9/30/25	11/6/25	→
10-Q	Q2 2025	6/30/25	8/6/25	→
10-Q	Q1 2025	3/31/25	5/6/25	→
10-K	FY 2024	12/31/24	2/25/25	→
10-Q	Q3 2024	9/30/24	11/5/24	→
↓

Earnings Releases (8-K)

19 shown

Filed	Period
1/22/26	Q4 FY2026	→
10/30/25	Q3 FY2025	→
7/24/25	Q2 FY2025	→
4/23/25	Q1 FY2025	→
1/23/25	Q4 FY2025	→
10/24/24	Q3 FY2024	→
↓

News (8-K)

61 shown

Filed	Type	Description
2/13/26	Other	Other Events	→
12/31/25	Reg FD	Regulation FD Disclosure	→
11/21/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
11/14/25	Other	Other Events	→
11/4/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
9/3/25	Other	8-K Filing	→
↓

Prospectuses & Registrations

26 shown

Filed	Form	Description
9/2/25	S-8	S-8	→
6/16/25	424B3	424B3	→
6/13/25	S-4/A	S-4/A	→
5/28/25	S-4	S-4	→
4/3/25	ARS	ARS	→
12/20/24	S-3ASR	S-3ASR	→
↓

Filing History(1001 filings)

TypeDateAccessionPeriodSize

Mar 5, 2026

0000887343-26-000103FORM 4

Mar 3, 2026

7.5 KB

144

Mar 4, 2026

0001959173-26-001859

—

4.9 KB

144

Mar 3, 2026

0001959173-26-001788

—

4.3 KB

Mar 2, 2026

0000887343-26-000102FORM 4

Mar 1, 2026

4.5 KB

Mar 2, 2026

0000887343-26-000100FORM 4

Mar 1, 2026

5.2 KB

Mar 2, 2026

0001689701-26-000002FORM 4

Mar 1, 2026

5.8 KB

Mar 2, 2026

0001759802-26-000006FORM 4

Mar 1, 2026

5.2 KB

Mar 2, 2026

0000887343-26-000098FORM 4

Mar 1, 2026

4.5 KB

Mar 2, 2026

0000887343-26-000096FORM 4

Mar 1, 2026

4.5 KB

Mar 2, 2026

0000887343-26-000094FORM 4

Mar 1, 2026

4.5 KB

Mar 2, 2026

0001810107-26-000005FORM 4

Mar 1, 2026

4.5 KB

Mar 2, 2026

0000887343-26-000092FORM 4

Mar 1, 2026

4.5 KB

Mar 2, 2026

0000887343-26-000090FORM 4

Mar 1, 2026

4.5 KB

10-K

Feb 26, 2026

0000887343-26-00008810-K

Dec 31, 2025

29.5 MB

Feb 20, 2026

0000887343-26-000083FORM 4

Feb 18, 2026

5.3 KB

Feb 20, 2026

0002099171-26-000002FORM 4

Feb 18, 2026

5.2 KB

Feb 20, 2026

0000887343-26-000081FORM 4

Feb 18, 2026

5.3 KB

Feb 20, 2026

0000887343-26-000079FORM 4

Feb 18, 2026

5.3 KB

Feb 20, 2026

0001759802-26-000004FORM 4

Feb 18, 2026

6.9 KB

Feb 20, 2026

0000887343-26-000077FORM 4

Feb 18, 2026

5.3 KB

Feb 20, 2026

0000887343-26-000075FORM 4

Feb 18, 2026

5.3 KB

Feb 20, 2026

0000887343-26-000073FORM 4

Feb 18, 2026

5.3 KB

Feb 20, 2026

0000887343-26-000071FORM 4

Feb 18, 2026

5.2 KB

Feb 20, 2026

0000887343-26-000069FORM 4

Feb 18, 2026

5.3 KB

Feb 20, 2026

0000887343-26-000067FORM 4

Feb 18, 2026

5.3 KB

25 filings shown

Filed	Form	Description
4/3/25	DEFA14A	DEFA14A	→
4/3/25	DEF 14A	DEF 14A	→
4/8/24	DEFA14A	DEFA14A	→
3/27/24	DEFA14A	DEFA14A	→
3/27/24	DEF 14A	DEF 14A	→
4/6/23	DEFA14A	FORM DEFA14A	→
↓

COLUMBIA BANKING SYSTEM, INC.

Financials

Earnings Releases (8-K)

News (8-K)

Prospectuses & Registrations

Filing History(1001 filings)

Proxies

Ownership

Other Filings

Filed	Form	Description
3/5/26	4	4	→
3/2/26	4	4	→
3/2/26	4	4	→
3/2/26	4	4	→
3/2/26	4	4	→
3/2/26	4	4	→
↓

Filed	Form	Description
3/4/26	144	144	→
3/3/26	144	144	→
2/10/26	SCHEDULE 13G	SCHEDULE 13G	→
1/30/26	144	144	→
7/11/25	425	425	→
6/27/25	11-K	11-K	→
↓