---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-310544"
form_type: "8-K"
ticker: "PEPG"
cik: "0001835597"
company_name: "PepGen Inc."
filed_at: "2025-12-08T23:59:59+00:00"
generated_at: "2026-05-16T14:03:53.279447+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# PepGen appoints Joseph Vittiglio as Chief Business and Legal Officer

## Summary
- Joseph Vittiglio named Chief Business and Legal Officer, effective December 8, 2025.
- He brings 20+ years of biotech legal, compliance, and business development experience.
- Most recently served as Chief Business and Legal Officer at bluebird bio.
- At bluebird, he helped launch 3 gene therapies and completed over $400M in financings.
- He previously led legal and business functions at Finch Therapeutics and AMAG Pharmaceuticals.

## SEC filing metadata
- accession: 0001193125-25-310544
- form_type: 8-K
- ticker: PEPG
- cik: 0001835597
- company_name: PepGen Inc.
- filed_at: 2025-12-08T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1835597/000119312525310544/0001193125-25-310544-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1835597/000119312525310544/pepg-20251208.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-310544
- JSON: https://secwatch.observer/filing/0001193125-25-310544.json
- Plain text: https://secwatch.observer/filing/0001193125-25-310544.txt

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