Repligen(RGEN) - 2021 Q4 - Annual Report

Washington, D.C. 20549 FORM 10-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION | OR | | --- | | ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | | For the transition period from to | | Commission File Number 000-14656 | | REPLIGEN CORPORATION | | (Exact name of registrant as specified in its charter) | | Delaware 04-2729386 | | (State or other jurisdiction of (I.R.S. Employer | | incorporation or organization) Identification No.) | | 41 Seyon Street, Bldg. 1, S ...