REPLIGEN CORP (RGEN)
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Latest RGEN Insider Trades
Olivier Loeillot - OfficerOpen-market sale$977K
Olivier Loeillot - OfficerOlivier Loeillot - OfficerOlivier Loeillot - OfficerOlivier Loeillot - Officer
Martin D. MadausRepligen, headquartered in Waltham, Massachusetts, is a global life sciences company that develops and sells bioprocessing equipment and supplies used in the manufacturing of biologic drugs, including monoclonal antibodies, recombinant proteins, vaccines, and cell and gene therapies. Its customers include biopharmaceutical companies, contract development and manufacturing organizations, and other life science companies. It sells four main product categories: filtration (including fluid management) is the largest category (about 55% of total revenue), while chromatography, proteins, and process analytics are 21%, 11%, and 13%, respectively. Customers in North America, Europe, and Asia-Pacific contribute about 44%, 37%, and 19% of revenue, respectively.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 3 | 6,689 | $1.16M |
| Option exercise | 2 | 10,852 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
48 Form 4 filings on record, the earliest from Nov 20, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Olivier Loeillot - Officer | Option exercise | Common Stock | 5,426 | $141.79 | $769K | |
| Olivier Loeillot - Officer | Open-market sale | Common Stock | 5,426 | $180.00 | $977K | |
| Olivier Loeillot - Officer | Option exercise | Stock Option (Right to Buy) | 5,426 | $0.00 | - | |
| Jason K. Garland - Officer | Open-market sale | Common Stock | 530 | $150.00 | $80K | |
| Jason K. Garland - Officer | Open-market sale | Common Stock | 733 | $145.00 | $106K | |
| Martin D. Madaus | Grant or award | Common Stock | 995 | $0.00 | - | |
| Martin D. Madaus | Grant or award | Stock Option (Right to Buy) | 2,239 | $0.00 | - | |
 Konstantin Konstantinov | Grant or award | Common Stock | 995 | $0.00 | - | |
| Konstantin Konstantinov | Grant or award | Stock Option (Right to Buy) | 2,239 | $0.00 | - | |
| Manner Carrie Eglinton | Grant or award | Common Stock | 995 | $0.00 | - | |
| Manner Carrie Eglinton | Grant or award | Stock Option (Right to Buy) | 2,239 | $0.00 | - | |
 Rohin Mhatre | Grant or award | Common Stock | 995 | $0.00 | - | |
| Rohin Mhatre | Grant or award | Stock Option (Right to Buy) | 2,239 | $0.00 | - | |
| Margaret Pax | Grant or award | Common Stock | 995 | $0.00 | - | |
| Margaret Pax | Grant or award | Stock Option (Right to Buy) | 2,239 | $0.00 | - | |
| Karen A. Dawes | Grant or award | Common Stock | 995 | $0.00 | - | |
| Karen A. Dawes | Grant or award | Stock Option (Right to Buy) | 2,239 | $0.00 | - | |
| Glenn P. Muir | Grant or award | Common Stock | 995 | $0.00 | - | |
| Glenn P. Muir | Grant or award | Stock Option (Right to Buy) | 2,239 | $0.00 | - | |
| Nicolas Barthelemy | Grant or award | Common Stock | 995 | $0.00 | - | |
| Nicolas Barthelemy | Grant or award | Stock Option (Right to Buy) | 2,239 | $0.00 | - | |
| Glenn P. Muir | Option exercise | Common Stock | 2,434 | $38.76 | $94K | |
| Glenn P. Muir | Option exercise | Stock Option (Right to Buy) | 2,434 | $0.00 | - | |
 Brian Robb Douglass - Officer | Tax withholding / forfeiture | Common Stock | 334 | $126.43 | $42K | |
| Olivier Loeillot - Officer | Open-market sale | Common Stock | 3,832 | $140.00 | $536K | |
| Ralf Kuriyel - Officer | Grant or award | Common Stock | 5,284 | $0.00 | - | |
| Ralf Kuriyel - Officer | Grant or award | Stock Option (Right to Buy) | 5,669 | $0.00 | - | |
| Olivier Loeillot - Officer | Grant or award | Common Stock | 24,134 | $0.00 | - | |
| Olivier Loeillot - Officer | Grant or award | Stock Option (Right to Buy) | 25,890 | $0.00 | - | |
| James Bylund - Officer | Grant or award | Common Stock | 7,751 | $0.00 | - | |
| James Bylund - Officer | Grant or award | Stock Option (Right to Buy) | 8,315 | $0.00 | - | |
| Jason K. Garland - Officer | Grant or award | Common Stock | 7,751 | $0.00 | - | |
| Jason K. Garland - Officer | Grant or award | Stock Option (Right to Buy) | 8,315 | $0.00 | - | |
| James Bylund - Officer | Tax withholding / forfeiture | Common Stock | 62 | $125.84 | $8K | |
| James Bylund - Officer | Grant or award | Common Stock | 125 | $0.00 | - | |
| Ralf Kuriyel - Officer | Tax withholding / forfeiture | Common Stock | 42 | $125.84 | $5K | |
| Ralf Kuriyel - Officer | Grant or award | Common Stock | 125 | $0.00 | - | |
| James Bylund - Officer | Tax withholding / forfeiture | Common Stock | 1,478 | $128.73 | $190K | |
| James Bylund - Officer | Tax withholding / forfeiture | Common Stock | 2,433 | $124.97 | $304K | |
| Olivier Loeillot - Officer | Tax withholding / forfeiture | Common Stock | 344 | $128.73 | $44K | |
| Olivier Loeillot - Officer | Tax withholding / forfeiture | Common Stock | 1,610 | $124.97 | $201K | |
| Anthony Hunt | Tax withholding / forfeiture | Common Stock | 9,897 | $124.97 | $1.24M | |
| Jason K. Garland - Officer | Tax withholding / forfeiture | Common Stock | 327 | $128.73 | $42K | |
| Jason K. Garland - Officer | Tax withholding / forfeiture | Common Stock | 715 | $124.97 | $89K | |
| Ralf Kuriyel - Officer | Tax withholding / forfeiture | Common Stock | 444 | $128.73 | $57K | |
| Ralf Kuriyel - Officer | Tax withholding / forfeiture | Common Stock | 923 | $124.97 | $115K | |
| Brian Robb Douglass - Officer | Tax withholding / forfeiture | Common Stock | 221 | $124.97 | $28K | |
| Brian Robb Douglass - Officer | Grant or award | Common Stock | 2,288 | $0.00 | - | |
| Brian Robb Douglass - Officer | Grant or award | Stock Option (Right to Buy) | 2,143 | $0.00 | - | |
| Karen A. Dawes | Open-market sale | Common Stock | 275 | $161.00 | $44K | |
| Glenn P. Muir | Option exercise | Common Stock | 3,366 | $26.12 | $88K | |
| Glenn P. Muir | Option exercise | Stock Option (Right to Buy) | 3,366 | $0.00 | - | |
| Anthony Hunt | Other | Common Stock | 2,000 | - | - |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Loeillot Olivier | Officer, Director | 5,426 | $977K | View on EDGAR | |
| - | - | - | - | View on EDGAR | |
| - | - | - | - | View on EDGAR |
REPLIGEN CORP (RGEN) had 3 insider filings in the last 90 days, with the most recent on 2026-08-21. The full record for RGEN runs to 48 Form 4 filings, the earliest from 2024-11-20. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of RGEN were filed in the last 90 days. 1 purchase is on record for this company.
3 insider sales of RGEN were filed in the last 90 days, totaling $1.16M.
This page tracks RGEN Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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