---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-046746"
form_type: "8-K"
ticker: "PEPG"
cik: "0001835597"
company_name: "PepGen Inc."
filed_at: "2025-03-28T23:59:59+00:00"
generated_at: "2026-05-24T03:16:14.271721+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# PepGen CMO Michelle Mellion resigns, effective April 4, 2025

## Summary
- Michelle L. Mellion, MD, resigned as Chief Medical Officer; departure effective April 4, 2025.
- Resignation is not due to any disagreement with the company, per the 8-K.
- No successor has been announced as of the filing date.

## SEC filing metadata
- accession: 0000950170-25-046746
- form_type: 8-K
- ticker: PEPG
- cik: 0001835597
- company_name: PepGen Inc.
- filed_at: 2025-03-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1835597/000095017025046746/0000950170-25-046746-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1835597/000095017025046746/pepg-20250324.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-046746
- JSON: https://secwatch.observer/filing/0000950170-25-046746.json
- Plain text: https://secwatch.observer/filing/0000950170-25-046746.txt

## Key facts
- Executive change
  Michelle L. Mellion resigned as Chief Medical Officer at PepGen Inc..
  - Action: resigned
  - Role: Chief Medical Officer
  source text: On March 24, 2025, Michelle L. Mellion, MD resigned from her position as Chief Medical Officer of PepGen Inc.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1835597/000095017025046746/0000950170-25-046746-index.htm

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