# EDGAR Filing Document

**Accession Number:** 0000730272
**File Stem:** 0001193125-26-140150
**Filing Date:** 2026-4
**Character Count:** 1201
**Document Hash:** 072d8bd4d8fb6cdb3651ca18cc4ef8b1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-140150.hdr.sgml**: 20260402

**ACCESSION NUMBER**: 0001193125-26-140150

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260402

**DATE AS OF CHANGE**: 20260402

**EFFECTIVENESS DATE**: 20260402

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** REPLIGEN CORP
- **CENTRAL INDEX KEY:** 0000730272
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 042729386
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-14656
- **FILM NUMBER:** 26833709

**BUSINESS ADDRESS:**
- **STREET 1:** 41 SEYON STREET
- **STREET 2:** BUILDING 1, SUITE 100
- **CITY:** WALTHAM
- **STATE:** MA
- **ZIP:** 02453
- **BUSINESS PHONE:** 7814499560

**MAIL ADDRESS:**
- **STREET 1:** 41 SEYON STREET
- **STREET 2:** BUILDING 1, SUITE 100
- **CITY:** WALTHAM
- **STATE:** MA
- **ZIP:** 02453

### Attached PDF Documents

**Attachment 1:** `2025_annual_report.pdf`

_No text found in this document._