---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-193403"
form_type: "8-K"
ticker: null
cik: "0001028918"
company_name: "PACIFIC PREMIER BANCORP INC"
filed_at: "2025-09-02T23:59:59+00:00"
generated_at: "2026-05-17T08:42:46.148234+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Columbia closes all-stock acquisition of Pacific Premier; PPBI delisted, assets ~$70B

## Summary
- Each Pacific Premier share converted into 0.9150 Columbia share; ~88.87M Columbia shares issued.
- Columbia assets ~$70B, loans ~$50B, deposits ~$56B; over 350 locations across 8 western states.
- Three former Pacific Premier directors (Gardner, Mitchell, Studenmund) join Columbia board.
- Pacific Premier common stock ceases trading and is delisted from Nasdaq effective Sept 2, 2025.
- Systems integration targeted for Q1 2026; Columbia Bank name transition from Umpqua complete.

## SEC filing metadata
- accession: 0001193125-25-193403
- form_type: 8-K
- cik: 0001028918
- company_name: PACIFIC PREMIER BANCORP INC
- filed_at: 2025-09-02T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.01, 3.01, 3.03, 5.01, 5.03, 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1028918/000119312525193403/0001193125-25-193403-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1028918/000119312525193403/d43060d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-193403
- JSON: https://secwatch.observer/filing/0001193125-25-193403.json
- Plain text: https://secwatch.observer/filing/0001193125-25-193403.txt

## Key facts
- Governance Changes
  PACIFIC PREMIER BANCORP INC: Pacific Premier's Second Amended and Restated Certificate of Incorporation ceased to be in effect, replaced by Merger Sub's Certificate of Incorporation as the Surviving Corporation, and ultimately Columbia's Restated Articles of Incorporation became operative (effective 2025-09-02).
  - Change: charter amendment
  - Effective: 2025-09-02
  source text: Pursuant to the terms of the Merger Agreement, as of the Effective Time, the Second Amended and Restated Certificate of Incorporation, as amended, of Pacific Premier and the Amended and Restated Bylaws of Pacific Premier ceased to be in effect by operation of law and the Certificate of Incorporation of Merger Sub, as then in effect, became the Certificate of Incorporation of the Surviving Corporation, and the Bylaws of Merger Sub, as then in effect, became the Bylaws of the Surviving Corporation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1028918/000119312525193403/0001193125-25-193403-index.htm
- Governance Changes
  PACIFIC PREMIER BANCORP INC: Pacific Premier's Amended and Restated Bylaws ceased to be in effect, replaced by Merger Sub's Bylaws, and ultimately Columbia's Amended and Restated Bylaws became operative (effective 2025-09-02).
  - Change: bylaw amendment
  - Effective: 2025-09-02
  source text: Pursuant to the terms of the Merger Agreement, as of the Effective Time, the Second Amended and Restated Certificate of Incorporation, as amended, of Pacific Premier and the Amended and Restated Bylaws of Pacific Premier ceased to be in effect by operation of law and the Certificate of Incorporation of Merger Sub, as then in effect, became the Certificate of Incorporation of the Surviving Corporation, and the Bylaws of Merger Sub, as then in effect, became the Bylaws of the Surviving Corporation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1028918/000119312525193403/0001193125-25-193403-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.