Columbia Banking System, INC. 8-K Filing
Ticker: COLB · Form: 8-K · Filed: Dec 31, 2025 · CIK: 887343
Sentiment: neutral
Filing Stats: 452 words · 2 min read · ~2 pages · Grade level 11.3 · Accepted 2025-12-31 12:13:23
Filing Documents
- colb-20251231.htm (8-K) — 23KB
- colbex991q42025earningscal.htm (EX-99.1) — 7KB
- picture1a.jpg (GRAPHIC) — 5KB
- 0000887343-25-000280.txt ( ) — 151KB
- colb-20251231.xsd (EX-101.SCH) — 2KB
- colb-20251231_lab.xml (EX-101.LAB) — 21KB
- colb-20251231_pre.xml (EX-101.PRE) — 12KB
- colb-20251231_htm.xml (XML) — 3KB
01 Regulation FD Disclosure
Item 7.01 Regulation FD Disclosure On December 31, 2025, Columbia Banking System, Inc. announced that it will conduct a quarterly earnings conference call on Thursday, January 22, 2026, at 2:00 p.m. PT (5:00 p.m. ET). During the call, management will discuss Columbia's fourth quarter 2025 financial results and provide an update on recent activities. The press release announcing the conference call information is attached as Exhibit 99.1 and incorporated herein by reference.
01 Financial Statements and Exhibits
Item 9.01 Financial Statements and Exhibits (d) Exhibits. 99.1 Press Release Announcing Quarterly Earnings Conference Call 104 Cover Page Interactive Data File (embedded within the Inline XBRL document)
SIGNATURES
SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. COLUMBIA BANKING SYSTEM, INC. (Registrant) Dated: December 31, 2025 By: /s/ Kumi Yamamoto Baruffi Kumi Yamamoto Baruffi Executive Vice President, General Counsel `