secwatch.observer — SEC 8-K summary
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Issuer:     COLUMBIA BANKING SYSTEM, INC. (COLB)
CIK:        0000887343
Form:       8-K
Filed at:   2026-07-30T21:27:01+00:00
Accession:  0000887343-26-000167
Event type: leadership
Sentiment:  neutral
Materiality: 0.35
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Columbia Banking System appoints Simone Lagomarsino to board, effective Sept 1, 2026
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- Lagomarsino will serve on Audit and Enterprise Risk Management Committees.
- She receives annual cash retainer of $95,000 and equity retainer of $115,000, prorated for 2026.
- She previously served as President of First Foundation Inc. until its sale in April 2026.
- Lagomarsino also receives $100,000 annual deferred compensation payments from Heritage Oaks Bank through 2032.
- Appointment subject to Oregon regulator approval for Columbia Bank board seat.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/887343/000088734326000167/0000887343-26-000167-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/887343/000088734326000167/colb-20260728.htm
  HTML page:      https://secwatch.observer/filing/0000887343-26-000167

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