Contacts and Alerts

Repligen Investor Relations Contact Information

Email: investors@repligen.com
781.419.1881

For questions about your shares, replacement of a lost stock certificate, or a change of address should be directed to Repligen's transfer agent:

American Stock Transfer and Trust Company
59 Maiden Lane
Plaza Level
New York, NY 10038
877.777.0800, select option 1
www.amstock.com
info@amstock.com

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