secwatch.observer — SEC 8-K summary
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Issuer:     COLUMBIA BANKING SYSTEM, INC. (COLB)
CIK:        0000887343
Form:       8-K
Filed at:   2025-04-25T23:59:59+00:00
Accession:  0001193125-25-094676
Event type: m_and_a
Sentiment:  neutral
Materiality: 0.80
Item codes: 1.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Columbia Banking to acquire Pacific Premier Bancorp in all-stock merger (0.9150x)
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- Each PPBI share converts to 0.9150 COLB shares; fractional shares paid in cash.
- Termination fee of $75M payable by either party under specified conditions.
- Three PPBI directors, incl. CEO Steven R. Gardner, to join Columbia board.
- Deal requires approvals from Columbia & Pacific Premier shareholders and regulators (Fed, FDIC, Oregon).
- Columbia will file Form S-4 with joint proxy/prospectus for shareholder votes.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/887343/000119312525094676/0001193125-25-094676-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/887343/000119312525094676/d677345d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-094676

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