---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-078340"
form_type: "8-K"
ticker: "REVB"
cik: "0001810560"
company_name: "REVELATION BIOSCIENCES, INC."
filed_at: "2025-05-28T23:59:59+00:00"
generated_at: "2026-05-20T08:32:55.459407+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Director George Tidmarsh resigns from Revelation Biosciences board to avoid conflict of interest

## Summary
- George Tidmarsh, MD, PhD resigned from the Board on May 23, 2025, to avoid conflict with new US governmental agency work.
- Board size reduced from 5 to 4; Lakhmir Chawla, MD reclassified as Class C Director.
- Resignation was not due to any disagreement with the company's operations, policies, or practices.
- Tidmarsh served as a Class C Director for 5 years; term was set to expire at the 2025 Annual Meeting.

## SEC filing metadata
- accession: 0000950170-25-078340
- form_type: 8-K
- ticker: REVB
- cik: 0001810560
- company_name: REVELATION BIOSCIENCES, INC.
- filed_at: 2025-05-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1810560/000095017025078340/0000950170-25-078340-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1810560/000095017025078340/revb-20250523.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-078340
- JSON: https://secwatch.observer/filing/0000950170-25-078340.json
- Plain text: https://secwatch.observer/filing/0000950170-25-078340.txt

## Key facts
- Executive change
  George Tidmarsh resigned as Director at REVELATION BIOSCIENCES, INC..
  - Action: resigned
  - Role: Director
  source text: On May 23, 2025, George Tidmarsh, M.D., Ph.D., resigned from the Board of Directors of Revelation Biosciences, Inc. (the “Company”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1810560/000095017025078340/0000950170-25-078340-index.htm

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