Notice of Proposed Sale · 144
Repligen Corporation
RGENNASDAQEQUITYCurrent
Notice of Proposed Sale
Structured filing — 144
primary_doc.xml
Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.
Proposed-sale notice
- Issuer
- REPLIGEN CORP
- Issuer CIK
- 0000730272
- SEC file number
- 000-14656
- Phone
- 7814499560
- Person for whose account securities are to be sold
- Loeillot Olivier
- Relationships to issuer
- Officer · Director
- Street
- 41 SEYON STREET
- Street (continued)
- BUILDING 1, SUITE 100
- City
- WALTHAM
- State / country code
- MA
- Postal code
- 02453
Securities proposed for sale
| Security | Proposed units | Aggregate market value | Units outstanding | Approximate sale date | Exchange | Broker / market maker |
|---|---|---|---|---|---|---|
| Common | 12,946 | 2,459,740.00 | 56,435,621 | 09/24/2026 | NASDAQ | Fidelity Brokerage Services LLC |
Broker / market maker — proposed row 1, entry 1
- Name
- Fidelity Brokerage Services LLC
- Street
- 900 Salem Street
- City
- Smithfield
- State / country code
- RI
- Postal code
- 02917
Acquisition of securities to be sold
| Security | Acquired | Nature of acquisition | Acquired from | Amount acquired | Gift transaction | Payment date | Nature of payment |
|---|---|---|---|---|---|---|---|
| Common | 09/24/2026 | Stock Option Exercise | Issuer | 12,946 | N | 09/24/2026 | Cash |
Sales reported in the preceding three months
| Seller | Security | Sale date | Amount sold | Gross proceeds |
|---|---|---|---|---|
| Olivier Loeillot | Common | 08/20/2026 | 5,426 | 976,680.00 |
| Olivier Loeillot | Common | 09/04/2026 | 3,035 | 503,506.50 |
| Olivier Loeillot | Common | 09/21/2026 | 5,426 | 976,680.00 |
Seller — prior-sale row 1, entry 1
- Name
- Olivier Loeillot
- Street
- 41 Seyon Street, Bldg. 1, Suite 100
- City
- Waltham
- State / country code
- MA
- Postal code
- 02453
Seller — prior-sale row 2, entry 1
- Name
- Olivier Loeillot
- Street
- 41 Seyon Street, Bldg. 1, Suite 100
- City
- Waltham
- State / country code
- MA
- Postal code
- 02453
Seller — prior-sale row 3, entry 1
- Name
- Olivier Loeillot
- Street
- 41 Seyon Street, Bldg. 1, Suite 100
- City
- Waltham
- State / country code
- MA
- Postal code
- 02453
Prior-sale reporting
- Nothing to report for the preceding three months
- N
Notice signature
- Notice date
- 09/24/2026
- Signed
- /s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Olivier Loeillot
- Plan adoption dates
- 08/19/2025
Company context
Repligen Corporation is a global life sciences company that develops and commercializes highly innovative bioprocessing technologies and systems that enable efficiencies in the process of manufacturing biological drugs. We are “inspiring advances in bioprocessing” for the customers we serve; primarily biopharmaceutical drug developers and contract development and manufacturing organizations (CDMOs) worldwide. Our focus areas are Filtration and Fluid Management, Chromatography, Process Analytics and Proteins. Our corporate headquarters are located in Waltham, Massachusetts, and the majority of our manufacturing sites are in the U.S., with additional key sites in Estonia, Germany, Ireland, the Netherlands and Sweden. For more information about the Company see our website at www.repligen.com, and follow us on LinkedIn.