---
schema_version: "secwatch.filing_event.v1"
accession: "0000887343-25-000159"
form_type: "8-K"
ticker: "COLB"
cik: "0000887343"
company_name: "COLUMBIA BANKING SYSTEM, INC."
filed_at: "2025-04-23T23:59:59+00:00"
generated_at: "2026-05-23T08:46:03.560182+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Columbia posts Q1 net income $87M; acquires Pacific Premier in all-stock deal

## Summary
- Net income $87M ($0.41 diluted EPS); operating net income $140M ($0.67 operating EPS).
- Net interest margin 3.60% (down 4 bps QoQ); deposits up $497M to $42.2B.
- $55M legal settlement and $15M severance drove non-interest expense to $340M.
- All-stock acquisition of Pacific Premier (PPBI); combined ~$70B assets, mid-teens EPS accretion, close expected H2 2025.

## SEC filing metadata
- accession: 0000887343-25-000159
- form_type: 8-K
- ticker: COLB
- cik: 0000887343
- company_name: COLUMBIA BANKING SYSTEM, INC.
- filed_at: 2025-04-23T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/887343/000088734325000159/0000887343-25-000159-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/887343/000088734325000159/colb-20250423.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000887343-25-000159
- JSON: https://secwatch.observer/filing/0000887343-25-000159.json
- Plain text: https://secwatch.observer/filing/0000887343-25-000159.txt

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