RGEN
REPLIGEN CORP · Healthcare · Market cap $9.8B
Insiders sold $1.7M net in the last 90 days ·2 sellers, 0 buyers· 4 of 4 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 8, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$10.8M
reported sales (SEC code S)
Unique Insiders
5
in the rolling window
Latest filing
Sep 8, 2026
Loeillot Olivier
REPLIGEN CORP (RGEN) has 38 SEC Form 4 filings (59 transaction rows) in the rolling window, disclosed by 5 distinct insiders. Most recent filing: Sep 8, 2026.
Inside the rolling window, 5 insiders at REPLIGEN CORP reported no open-market purchases and 10 open-market sales totaling $10.8M. The most active filer is Chief Executive Officer Loeillot Olivier with 4 filings. Insiders have net sold $2.2M over the trailing 6 months. The most recent open-market filing is a sale of 3,035 shares by Chief Executive Officer Loeillot Olivier, dated Sep 4, 2026, worth $504K.
- Industry:Medical - Instruments & Supplies
- CEO:Olivier Loeillot
- Employees:1,778
- HQ:Waltham, MA, US
- IPO:1986-04-29
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Chief Executive Officer | Sale | 3,035 | $504K | Sep 8 | +2.6% | SEC ↗ | |
Loeillot OlivierFirst in 4 months | Chief Executive Officer | Sale | 5,426 | $977K | Aug 21 | -4.5% | SEC ↗ |
| CFO | Sale | 530 | $80K | Jul 17 | +17.4% | SEC ↗ | |
Garland Jason KFirst filing | CFO | Sale | 733 | $106K | Jun 26 | +17.6% | SEC ↗ |
Loeillot OlivierFirst in 5 months | Chief Executive Officer | Sale | 3,832 | $536K | Apr 22 | +39.0% | SEC ↗ |
DAWES KAREN AFirst filing | Director | Sale | 275 | $44K | Dec 18 | +9.6% | SEC ↗ |
Loeillot OlivierFirst filing | Chief Executive Officer | Sale | 7,041 | $1.2M | Nov 26 | +1.0% | SEC ↗ |
Bylund JamesFirst filing | Chief Operating Officer | Sale | 2,191 | $331K | Nov 19 | +11.5% | SEC ↗ |
| Director | Sale | 20,000 | $3.1M | Nov 14 | +13.5% | SEC ↗ | |
Hunt AnthonyFirst filing | Director | Sale | 25,000 | $3.9M | Nov 13 | — | SEC ↗ |
Congress trading RGEN 9 all-time
- RRep. Lisa C. McClainPurchase$1,001 - $15,0002025-06-11
- RRep. Lisa C. McClainOther$1,001 - $15,0002025-06-17
- RRep. Lisa C. McClainPurchase$1,001 - $15,0002025-07-22
- RRep. Lisa C. McClainPurchase$1,001 - $15,0002025-06-11
- RRep. Lisa C. McClainOther$1,001 - $15,0002025-06-17
- DRep. Ro KhannaSale$1,001 - $15,0002022-04-11
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does RGEN have?
REPLIGEN CORP (RGEN) has 38 SEC Form 4 filings (59 transaction rows) in the rolling 365-day window, disclosed by 5 distinct insiders. Most recent filing: Sep 8, 2026.
When was the most recent SEC Form 4 filing for RGEN?
The most recent Form 4 filing for RGEN on Tracefour is dated Sep 8, 2026.
Who is the most active insider at RGEN?
The most active SEC Form 4 filer at RGEN in the rolling window is Chief Executive Officer Loeillot Olivier, with 4 filings.
What is the net insider flow at RGEN over the last 6 months?
Over the trailing 180 days, insiders at RGEN have net sold $2.2M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at RGEN in the current window?
Inside the rolling window, insiders at RGEN bought $0 and sold $10.8M based on SEC Form 4 filings.
Can I get alerts for RGEN insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at REPLIGEN CORP (RGEN). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
REPLIGEN CORP is in the Healthcare sector.