---
schema_version: "secwatch.filing_event.v1"
accession: "0000887343-25-000262"
form_type: "8-K"
ticker: "COLB"
cik: "0000887343"
company_name: "COLUMBIA BANKING SYSTEM, INC."
filed_at: "2025-10-30T23:59:59+00:00"
generated_at: "2026-05-17T01:30:56.480337+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Columbia Banking System closes Pacific Premier acquisition; Q3 operating EPS $0.85, announces $700M buyback

## Summary
- Closed Pacific Premier acquisition on Aug 31, 2025; integration on track for Q1 2026.
- Q3 GAAP EPS $0.40, operating EPS $0.85; net interest margin 3.84% (+9 bps QoQ).
- Board authorized $700M share repurchase program, expiring Nov 30, 2026.
- Total deposits $55.8B (+$14B); organic customer deposit growth ~$800M in Q3.
- Net charge-offs 0.22% annualized (down from 0.31% prior); NPA ratio 0.29%.

## SEC filing metadata
- accession: 0000887343-25-000262
- form_type: 8-K
- ticker: COLB
- cik: 0000887343
- company_name: COLUMBIA BANKING SYSTEM, INC.
- filed_at: 2025-10-30T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/887343/000088734325000262/0000887343-25-000262-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/887343/000088734325000262/colb-20251030.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000887343-25-000262
- JSON: https://secwatch.observer/filing/0000887343-25-000262.json
- Plain text: https://secwatch.observer/filing/0000887343-25-000262.txt

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