secwatch.observer — SEC 8-K summary
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Issuer:     COLUMBIA BANKING SYSTEM, INC. (COLB)
CIK:        0000887343
Form:       8-K
Filed at:   2026-09-30T21:07:09+00:00
Accession:  0000887343-26-000181
Event type: other
Sentiment:  neutral
Materiality: 0.10
Item codes: 7.01, 9.01
LLM model:  deepseek-v4.1-flash:cloud@v2

Columbia Banking System sets Q3 2026 earnings release for Oct. 22, conference call same day
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- Columbia Banking System (Nasdaq: COLB) will release third quarter 2026 financial results on Thursday, October 22, 2026, after market close.
- Management will host a conference call at 2:00 p.m. PT (5:00 p.m. ET) that day to discuss results and provide an update on recent activities, followed by a live Q&A.
- No financial figures, guidance or preliminary results were disclosed; the filing is a scheduling notice only.
- A replay will be available through Columbia's investor relations page under the 'News & Market Data-Event Calendar' section.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/887343/000088734326000181/0000887343-26-000181-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/887343/000088734326000181/colb-20260930.htm
  HTML page:      https://secwatch.observer/filing/0000887343-26-000181

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer