secwatch.observer — SEC 8-K summary
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Issuer:     COLUMBIA BANKING SYSTEM, INC. (COLB)
CIK:        0000887343
Form:       8-K
Filed at:   2025-11-04T23:59:59+00:00
Accession:  0001193125-25-264630
Event type: leadership
Sentiment:  neutral
Materiality: 0.70
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Columbia Banking System appoints Ivan Seda as CFO effective Dec 31, 2025; Farnsworth transitions to advisor
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- Ivan Seda named CFO effective Dec 31, 2025; base salary $550,000, target incentive 85%, PSU grant $750,000.
- Ronald Farnsworth steps down as CFO on Dec 31, 2025, serves as senior advisor through June 1, 2026.
- Farnsworth receives cash severance, 18 months of benefits contributions, and lump sum based on 62,572 target shares.
- Seda joined Columbia as Deputy CFO in August 2025; prior roles include CFO at Union Bank and Deputy CFO at BECU.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/887343/000119312525264630/0001193125-25-264630-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/887343/000119312525264630/d846413d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-264630

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