secwatch.observer — SEC 8-K summary
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Issuer:     COLUMBIA BANKING SYSTEM, INC. (COLB)
CIK:        0000887343
Form:       8-K
Filed at:   2025-04-23T23:59:59+00:00
Accession:  0001193125-25-091469
Event type: m_and_a
Sentiment:  positive
Materiality: 0.85
Item codes: 7.01, 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Columbia Banking to acquire Pacific Premier Bancorp in $2B all-stock deal
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- COLB to acquire PPBI at 0.9150x exchange ratio, valuing PPBI at ~$20.83/share; combined assets ~$70B
- Deal expected to deliver mid-teens EPS accretion to COLB; tangible book dilution earned back in ~3 years
- Combined company will have ~$57B deposits; COLB gains top-10 deposit share in Southern California
- Transaction expected to close in H2 2025; subject to regulatory and shareholder approvals
- COLB plans to rename Umpqua Bank to Columbia Bank later this year

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/887343/000119312525091469/0001193125-25-091469-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/887343/000119312525091469/d908038d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-091469

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