---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-056482"
form_type: "8-K"
ticker: null
cik: "0001077771"
company_name: "UMPQUA HOLDINGS CORP"
filed_at: "2023-03-01T23:59:59+00:00"
generated_at: "2026-06-18T16:58:35.244710+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 1.0
calibrated_materiality_score: 1.0
confidence: "high"
source: SEC EDGAR
---

# Umpqua and Columbia complete all-stock merger; Umpqua shareholders receive 0.5958 COLB shares per share

## Summary
- Merger closed Feb 28, 2023; each Umpqua share converted to 0.5958 Columbia shares; Umpqua stock delisted from Nasdaq.
- Combined company has >$50B assets, ~$37B loans, ~$45B deposits across eight western states.
- Board expanded to 14 directors, 7 from each company; Cort O'Haver named Executive Chair, Clint Stein remains CEO.
- Umpqua shareholders own ~62% of combined company; combined company trades under COLB on Nasdaq.
- All branches to operate under Umpqua Bank brand after integration; corporate HQ in Tacoma, WA; bank HQ in Lake Oswego, OR.

## SEC filing metadata
- accession: 0001193125-23-056482
- form_type: 8-K
- cik: 0001077771
- company_name: UMPQUA HOLDINGS CORP
- filed_at: 2023-03-01T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 1.0
- calibrated_materiality_score: 1.0
- confidence: high
- sec_items: 2.01, 3.01, 3.03, 5.01, 5.02, 5.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/d803964d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-056482
- JSON: https://secwatch.observer/filing/0001193125-23-056482.json
- Plain text: https://secwatch.observer/filing/0001193125-23-056482.txt

## Key facts
- Executive change
  Cort L. O’Haver departed as Director at UMPQUA HOLDINGS CORP.
  - Action: ceased serving
  - Role: Director
  source text: At the Effective Time, in accordance with the terms of the Merger Agreement, each of Umpqua’s directors and executive officers ceased serving in such capacities and Columbia expanded the size of its board of directors to fourteen (14) directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm
- Executive change
  Peggy Y. Fowler departed as Director at UMPQUA HOLDINGS CORP.
  - Action: ceased serving
  - Role: Director
  source text: At the Effective Time, in accordance with the terms of the Merger Agreement, each of Umpqua’s directors and executive officers ceased serving in such capacities and Columbia expanded the size of its board of directors to fourteen (14) directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm
- Executive change
  John F. Schultz departed as Director at UMPQUA HOLDINGS CORP.
  - Action: ceased serving
  - Role: Director
  source text: At the Effective Time, in accordance with the terms of the Merger Agreement, each of Umpqua’s directors and executive officers ceased serving in such capacities and Columbia expanded the size of its board of directors to fourteen (14) directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm
- Executive change
  Maria M. Pope departed as Director at UMPQUA HOLDINGS CORP.
  - Action: ceased serving
  - Role: Director
  source text: At the Effective Time, in accordance with the terms of the Merger Agreement, each of Umpqua’s directors and executive officers ceased serving in such capacities and Columbia expanded the size of its board of directors to fourteen (14) directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm
- Executive change
  Hilliard C. Terry, III departed as Director at UMPQUA HOLDINGS CORP.
  - Action: ceased serving
  - Role: Director
  source text: At the Effective Time, in accordance with the terms of the Merger Agreement, each of Umpqua’s directors and executive officers ceased serving in such capacities and Columbia expanded the size of its board of directors to fourteen (14) directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm
- Executive change
  Luis F. Machuca departed as Director at UMPQUA HOLDINGS CORP.
  - Action: ceased serving
  - Role: Director
  source text: At the Effective Time, in accordance with the terms of the Merger Agreement, each of Umpqua’s directors and executive officers ceased serving in such capacities and Columbia expanded the size of its board of directors to fourteen (14) directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm
- Executive change
  Anddria Clack-Rogers Varnado departed as Director at UMPQUA HOLDINGS CORP.
  - Action: ceased serving
  - Role: Director
  source text: At the Effective Time, in accordance with the terms of the Merger Agreement, each of Umpqua’s directors and executive officers ceased serving in such capacities and Columbia expanded the size of its board of directors to fourteen (14) directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm
- M&A Transactions
  UMPQUA HOLDINGS CORP underwent a change of control involving Columbia Banking System, Inc. (closed 2023-02-28).
  - Action: change of control
  - Counterparty: Columbia Banking System, Inc.
  - Closing: 2023-02-28
  source text: Effective on February 28, 2023 (the “ Closing Date ”), Umpqua completed its previously announced all-stock combination with Columbia.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1077771/000119312523056482/0001193125-23-056482-index.htm

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