Columbia Banking System, Inc. (COLB)
Nasdaq: COLB · State Commercial Banks · Tacoma, WA · filing with the SEC since 1996
Grade5.8
◀ Past 6.2● Present 5.1▶ Future 6.0
Filings
327 filings since 2017 beside 732 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026Due nextLarge accelerated filer
10-K
Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends.
by Mar 1, 2027
10-Q
Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end.
by May 10, 2027
A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 22 days after the quarter ended. The proxy statement was last filed Mar 31, 2026.
Filings a yearinsider forms included
738911475156124130117
2026 counts to Nov 13, 2026.
Officer or director change (8-K item 5.02): 7 times in the last 36 months, the newest Oct 27, 2026.SEC letters: 2 in the last 36 months, the newest Jun 13, 2025.
Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.
FiledFormWhat it is, in plain wordsPeriodAsk
Oct 22, 2026
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Jul 30, 2026
8-K items 5.02, 7.01, 9.01
Officer or director change; Investor disclosure (Regulation FD) · Current report
Jul 28, 2026
Jul 23, 2026
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Apr 23, 2026
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Jan 22, 2026
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Nov 4, 2025
8-K items 5.02, 7.01, 9.01
Officer or director change; Investor disclosure (Regulation FD) · Current report
Oct 29, 2025
Oct 30, 2025
8-K items 2.02, 7.01, 9.01
Results released; Investor disclosure (Regulation FD) · Current report
Sep 2, 2025
8-K items 2.01, 5.02, 7.01, 9.01
Purchase or sale of a business completed; Officer or director change; Investor disclosure (Regulation FD) · Current report
Aug 6, 2025
8-K items 7.01, 8.01, 9.01
Investor disclosure (Regulation FD); Other event · Current report
40 of 327 shown
Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.