James Bylund
Chief Operating Officer · REPLIGEN CORP
- 2025
- Mar 23, 2026
- 4
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies James Bylund files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Olivier Loeillot - $7.69M in RGEN purchases and sales in the last 12 months
- Anthony Hunt - $7.01M in RGEN purchases and sales in the last 12 months
- Jason K. Garland - $186K in RGEN purchases and sales in the last 12 months
- Karen A. Dawes - $44K in RGEN purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is James Bylund?
James Bylund is a corporate insider, tracked as Chief Operating Officer of REPLIGEN CORP (RGEN). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did James Bylund last file a Form 4?
The most recent primary Form 4 on record is dated 23 March 2026, one of 4 filings going back to 2025.
Has James Bylund been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($331K) across all tracked filings.
