secwatch.observer — SEC 8-K summary
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Issuer:     COLUMBIA BANKING SYSTEM, INC. (COLB)
CIK:        0000887343
Form:       8-K
Filed at:   2025-11-21T23:59:59+00:00
Accession:  0001193125-25-290691
Event type: leadership
Sentiment:  neutral
Materiality: 0.45
Item codes: 5.02
LLM model:  deepseek-v4-flash:cloud@v2

Columbia Banking appoints Brock Lakely as Chief Accounting Officer; Lisa White departs
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- Lisa M. White ceased as EVP, Principal Accounting Officer and Corporate Controller effective Nov 19, 2025.
- Brock Lakely appointed EVP, Chief Accounting Officer and Corporate Controller effective Nov 20, 2025.
- Lakely's annual base salary set at $360,000; he previously served as Chief Audit Executive and earlier as Chief Accounting Officer from 2018-2023.
- Lakely is a CPA with prior Ernst & Young experience; no familial or reportable transaction relationships disclosed.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/887343/000119312525290691/0001193125-25-290691-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/887343/000119312525290691/d90471d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-290691

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