---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-265002"
form_type: "8-K"
ticker: "RGEN"
cik: "0000730272"
company_name: "REPLIGEN CORP"
filed_at: "2021-09-03T23:59:59+00:00"
generated_at: "2026-06-29T05:56:13.500981+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "medium"
source: SEC EDGAR
---

# Repligen extends Cytiva supply agreement for ligand manufacture through 2025

## Summary
- Long-term supply agreement with Cytiva Sweden AB extended through 2025.
- Covers contract manufacture of Cytiva ligands at Repligen's Waltham, MA and Lund, Sweden facilities.
- No financial terms or volume commitments disclosed in the filing.

## SEC filing metadata
- accession: 0001193125-21-265002
- form_type: 8-K
- ticker: RGEN
- cik: 0000730272
- company_name: REPLIGEN CORP
- filed_at: 2021-09-03T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: medium
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/730272/000119312521265002/0001193125-21-265002-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/730272/000119312521265002/d168793d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-265002
- JSON: https://secwatch.observer/filing/0001193125-21-265002.json
- Plain text: https://secwatch.observer/filing/0001193125-21-265002.txt

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