Commitments and Contingencies

3 Months Ended

Mar. 31, 2014

Commitments and Contingencies

11. Commitments and Contingencies

In March 2014, the Company entered into an amendment of its existing lease to expand the rented space from 55,694 to 75,594 square feet at 41 Seyon Street, Waltham, Massachusetts. Pursuant to the terms of the amended lease, Repligen will lease an additional 19,900 square feet (the “Expansion Space”) for a period of eight years and one month, commencing on August 1, 2014 or the date upon which the landlord’s improvements to the Expansion Space have been completed, whichever is later. The Expansion Space shall become a part of Repligen’s corporate headquarters.

The amended lease provides for additional rent expense of approximately $361,000 on an annualized basis. The amended lease also requires an increased security deposit from $200,000 to $450,000 and continues to require the Company to pay a proportionate share of certain of the landlord’s annual operating costs and real estate taxes. Future minimum rental commitments under the amended lease as of March 31, 2014 are approximately $908,000 and $1,371,000 for the remainder of the year ending December 31, 2014, and the years ending December 31, 2015, 2016, 2017 and 2018, respectively.