Common Contracts

June 10, 2014 Jon Snodgres Montville, NJ 07045 Re: Employment Agreement Dear Jon:

Employment Agreement • July 15th, 2014 • Repligen Corp • Biological products, (no disgnostic substances) • Massachusetts

• Contract Type
  Employment Agreement
• Filed
  July 15th, 2014
• Company
  Repligen Corp
• Industry
  Biological products, (no disgnostic substances)
• Jurisdiction
  Massachusetts

This letter agreement (the “Agreement”) sets forth the terms of your employment with Repligen Corporation (the “Company”). This Agreement supersedes any prior oral or written agreements or understandings related to the terms and conditions of your employment.

April 7, 2014

Employment Agreement • May 6th, 2014 • Repligen Corp • Biological products, (no disgnostic substances) • Massachusetts

• Contract Type
  Employment Agreement
• Filed
  May 6th, 2014
• Company
  Repligen Corp
• Industry
  Biological products, (no disgnostic substances)
• Jurisdiction
  Massachusetts

This letter agreement (the “Agreement”) sets forth the terms of your employment with Repligen Corporation (the “Company”). This Agreement supersedes any prior oral or written agreements or understandings related to the terms and conditions of your employment.

SEPTEMBER 20, 2012

Employment Agreement • September 21st, 2012 • Repligen Corp • Biological products, (no disgnostic substances) • Massachusetts

• Contract Type
  Employment Agreement
• Filed
  September 21st, 2012
• Company
  Repligen Corp
• Industry
  Biological products, (no disgnostic substances)
• Jurisdiction
  Massachusetts

This letter agreement (the “Agreement”) sets forth the terms of your employment with Repligen Corporation (the “Company”). This Agreement supersedes any prior oral or written agreements or understandings related to the terms and conditions of your employment.