---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-26-032821"
form_type: "8-K"
ticker: "WSBF"
cik: "0001569994"
company_name: "Waterstone Financial, Inc."
filed_at: "2026-10-16T20:59:03+00:00"
generated_at: "2026-10-16T21:00:02.604513+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Waterstone Financial director Derek L. Tyus resigns from company and bank boards

## Summary
- Derek L. Tyus resigned from the Boards of Waterstone Financial (NASDAQ: WSBF) and WaterStone Bank SSB, effective October 20, 2026.
- Tyus, a director since 2021, is stepping down due to a new professional commitment; the company said there was no disagreement over operations, policies or practices.
- He served on the Company Board's Audit and Compensation Committees and the Bank Board's Executive Committee.
- Chairman Patrick S. Lawton thanked Tyus for his service; no replacement director was named.

## SEC filing metadata
- accession: 0001437749-26-032821
- form_type: 8-K
- ticker: WSBF
- cik: 0001569994
- company_name: Waterstone Financial, Inc.
- filed_at: 2026-10-16T20:59:03+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1569994/000143774926032821/0001437749-26-032821-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1569994/000143774926032821/wsbf20261012_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-26-032821
- JSON: https://secwatch.observer/filing/0001437749-26-032821.json
- Plain text: https://secwatch.observer/filing/0001437749-26-032821.txt

## Key facts
- Executive change
  Derek L. Tyus resigned as Director at Waterstone Financial, Inc..
  - Action: resigned
  - Role: Director
  source text: On October 16, 2026, Waterstone Financial, Inc. (the “Company”) (NASDAQ: WSBF), the holding company for WaterStone Bank SSB (the “Bank”), announced today that Derek L. Tyus has resigned from the Boards of Directors of the Company and the Bank, effective October 20, 2026.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1569994/000143774926032821/0001437749-26-032821-index.htm

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