secwatch.observer — SEC 8-K summary ====================================== Issuer: COLUMBIA BANKING SYSTEM, INC. (COLB) CIK: 0000887343 Form: 8-K Filed at: 2026-03-31T23:59:59+00:00 Accession: 0000887343-26-000116 Event type: other Sentiment: neutral Materiality: 0.10 Item codes: 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Columbia Banking sets Q1 2026 earnings release and call for April 23 -------------------------------------------------------------------- - Q1 2026 results will be released after market close on Thursday, April 23, 2026. - Conference call for investors and analysts at 2:00 p.m. PT (5:00 p.m. ET) the same day. - Management will discuss results and recent activities; Q&A session to follow. - Ticker: COLB (Nasdaq). No preliminary financial information provided. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/887343/000088734326000116/0000887343-26-000116-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/887343/000088734326000116/colb-20260331.htm HTML page: https://secwatch.observer/filing/0000887343-26-000116 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer