---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-001024"
form_type: "8-K"
ticker: "RGEN"
cik: "0000730272"
company_name: "REPLIGEN CORP"
filed_at: "2022-01-04T23:59:59+00:00"
generated_at: "2026-06-27T21:09:42.235443+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Repligen promotes James Bylund to Chief Operating Officer effective Jan 1, 2022

## Summary
- James Bylund promoted from SVP, Operations & IT to COO and principal operating officer, effective Jan 1, 2022.
- Bylund joined Repligen in March 2020; prior 10 years at Thermo Fisher as VP & GM of Single Use Technologies.
- He also held leadership roles at Fiserv (9 years) and Eli Lilly (7 years); holds B.S. from Utah State and MBA from Indiana.

## SEC filing metadata
- accession: 0001193125-22-001024
- form_type: 8-K
- ticker: RGEN
- cik: 0000730272
- company_name: REPLIGEN CORP
- filed_at: 2022-01-04T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/730272/000119312522001024/0001193125-22-001024-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/730272/000119312522001024/d245127d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-001024
- JSON: https://secwatch.observer/filing/0001193125-22-001024.json
- Plain text: https://secwatch.observer/filing/0001193125-22-001024.txt

## Key facts
- Executive change
  James Bylund changed role as Chief Operating Officer at REPLIGEN CORP.
  - Action: promoted
  - Role: Chief Operating Officer
  source text: On January 3, 2022, Repligen Corporation (the “ Company ”) promoted James Bylund, the Company’s current Senior Vice President, Operations and Information Technologies, to the role of Chief Operating Officer of the Company, effective January 1, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/730272/000119312522001024/0001193125-22-001024-index.htm

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