---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-179061"
form_type: "8-K"
ticker: "RGEN"
cik: "0000730272"
company_name: "REPLIGEN CORP"
filed_at: "2024-07-15T23:59:59+00:00"
generated_at: "2026-05-31T20:52:59.395578+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Repligen reports unauthorized access to files on its information systems

## Summary
- Unauthorized third party accessed certain files on July 9, 2024; response procedures activated immediately.
- External cybersecurity experts engaged; law enforcement notified.
- No impact on business operations, customer service, or financial condition expected.
- Systems remain operational and undisrupted; no malware encryption detected.
- Investigation ongoing to determine full scope and any required regulatory notifications.

## SEC filing metadata
- accession: 0001193125-24-179061
- form_type: 8-K
- ticker: RGEN
- cik: 0000730272
- company_name: REPLIGEN CORP
- filed_at: 2024-07-15T23:59:59+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/730272/000119312524179061/0001193125-24-179061-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/730272/000119312524179061/d868921d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-179061
- JSON: https://secwatch.observer/filing/0001193125-24-179061.json
- Plain text: https://secwatch.observer/filing/0001193125-24-179061.txt

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