---
schema_version: "secwatch.filing_event.v1"
accession: "0000887343-24-000111"
form_type: "8-K"
ticker: "COLB"
cik: "0000887343"
company_name: "COLUMBIA BANKING SYSTEM, INC."
filed_at: "2024-03-04T23:59:59+00:00"
generated_at: "2026-06-05T05:11:11.304261+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Columbia Banking System targets Q4 2024 core expense run rate of $965M-$985M; provides operational update

## Summary
- Q4 2024 core expense run rate target $965M-$985M annualized (excludes CDI amortization and non-operating items).
- Q4 2023 operating PPNR $212M; operating ROA 0.89%; tangible book value $16.12 per share (up 13% QoQ).
- Deposit cost 1.63% in Q4 2023 (top quartile of peers); non-interest deposits 34% of total; uninsured deposits 33%.
- Available liquidity $18.7B (138% of uninsured deposits); loan-to-deposit ratio 90%; CET1 ratio 9.6%.
- Near-term actions include branch consolidation, deposit rate management, and FinPac cost rationalization.

## SEC filing metadata
- accession: 0000887343-24-000111
- form_type: 8-K
- ticker: COLB
- cik: 0000887343
- company_name: COLUMBIA BANKING SYSTEM, INC.
- filed_at: 2024-03-04T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/887343/000088734324000111/0000887343-24-000111-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/887343/000088734324000111/colb-20240304.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000887343-24-000111
- JSON: https://secwatch.observer/filing/0000887343-24-000111.json
- Plain text: https://secwatch.observer/filing/0000887343-24-000111.txt

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