---
schema_version: "secwatch.filing_event.v1"
accession: "0001723596-26-000015"
form_type: "8-K"
ticker: "CLBK"
cik: "0001723596"
company_name: "Columbia Financial, Inc."
filed_at: "2026-04-23T23:59:59+00:00"
generated_at: "2026-05-15T04:35:28.725022+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Columbia Financial designates CFO Thomas Splaine as principal financial and accounting officer

## Summary
- Board named Thomas Splaine, Jr., EVP and CFO, as principal financial officer and principal accounting officer effective April 17, 2026.
- Designation formalizes Splaine's SEC reporting role after his appointment as CFO on January 28, 2026.
- No departure; prior CFO Dennis Gibney remains as First Senior EVP and Chief Banking Officer.

## SEC filing metadata
- accession: 0001723596-26-000015
- form_type: 8-K
- ticker: CLBK
- cik: 0001723596
- company_name: Columbia Financial, Inc.
- filed_at: 2026-04-23T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1723596/000172359626000015/0001723596-26-000015-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1723596/000172359626000015/clbk-20260417.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001723596-26-000015
- JSON: https://secwatch.observer/filing/0001723596-26-000015.json
- Plain text: https://secwatch.observer/filing/0001723596-26-000015.txt

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