January 9, 2017
Via EDGAR
Securities and Exchange Commission
Division of Corporation Finance
100 F Street, N.E.
Washington, DC 20549-3720
RE: | Repligen Corporation |
Form 10-K for year ended December 31, 2015
Filed February 25, 2016
File No. 0-14656
Ladies and Gentlemen:
Repligen Corporation (the Company) hereby advises the staff (the Staff) of the Securities and Exchange Commission (the Commission) that the Company has received the Staffs letter dated December 22, 2016 (the Comment Letter), regarding the Commissions review of the Companys Annual Report on Form 10-K for the fiscal year ended December 31, 2015. The Comment Letter requests that the Company respond within ten (10) business days from the date thereof, or inform the Staff of when the Company would provide a response. The Company respectfully requests an extension of an additional ten (10) business days until January 24, 2017 to respond to the Comment Letter in order to provide sufficient time for the Company to prepare the necessary response. The Company is committed to responding to the Comment Letter promptly and intends to provide a response to the Staff no later than January 24, 2017. Should you have any questions regarding the request made herein, please do not hesitate to contact me at (781) 419-1862. Thank you very much for your courtesy and cooperation in this matter.
Sincerely, |
/s/ Jon Snodgres |
Jon Snodgres |
Chief Financial Officer |
cc: | Arthur R. McGivern Goodwin Procter LLP |