Repligen Corporation (RGEN)
Nasdaq: RGEN · Biological Products, (No Diagnostic Substances) · Waltham, MA · filing with the SEC since 1995
Grade5.4
◀ Past 6.3● Present 6.4▶ Future 4.1
Who runs Repligen Corporation
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Loeillot Olivier
Chief Executive Officer. First filing Oct 2023, latest Oct 6, 2026, 7 filings in all.
Officers reporting now
7
of 15 people with a filing in the last fifteen months
Directors reporting now
8
22 people on the record since 2006
Officerssales are open-market, Oct 8, 2025 to Oct 8, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Douglass Brian Robb | CHIEF PRODUCT OFFICER | Dec 2025 | Oct 8, 2026 | none |
| Loeillot Olivier | Chief Executive Officer | Oct 2023 | Oct 6, 2026 | 9 · $7.7M |
| Garland Jason K | CFO | Sep 2023 | Sep 28, 2026 | 2 · $200,000 |
| Hughes Violetta | CHIEF ACCOUNTING OFFICER | Sep 2025 | Sep 2, 2026 | none |
| Bylund James | Chief Operating Officer | Mar 2021 | Mar 23, 2026 | 1 · $300,000 |
| Kuriyel Ralf | Senior VP, R&D | Mar 2018 | Mar 23, 2026 | none |
| Hunt Anthony | Chief Executive Officer | May 2014 | Mar 3, 2026 | 12 · $7.0M |
Directorssales are open-market, Oct 8, 2025 to Oct 8, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Barthelemy Nicolas | director | Jun 2014 | May 18, 2026 | none |
| Dawes Karen A | director | Sep 2006 | May 18, 2026 | 1 · $0.00 |
| Eglinton Manner Carrie | director | Jun 2020 | May 18, 2026 | none |
| Konstantinov Konstantin | director | May 2022 | May 18, 2026 | none |
| Madaus Martin D | director | Feb 2023 | May 18, 2026 | none |
| Mhatre Rohin | director | Mar 2020 | May 18, 2026 | none |
| Muir Glenn P | director | Sep 2015 | May 18, 2026 | none |
| Pax Margaret | director | Mar 2024 | May 18, 2026 | none |
Earlier names on the record8, newest filing first
Gebski Christine · officer · last filing May 2024Snodgres Jon · officer · last filing May 2023Ryan Thomas F Jr · director · last filing Mar 2022Cox John · director · last filing Mar 2020Cooper Glenn L Md · director · last filing Jun 2019Eddleman Roy T · 10% owner · last filing Aug 2018Benjamin Howard · officer · last filing Dec 2017Rusche James R · officer · last filing Feb 2017
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.