Commitments and Contingencies

3 Months Ended

12 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Commitments and Contingencies

Commitments and Contingencies

10. Commitments and Contingencies

The Company may be exposed, individually or in the aggregate, to certain claims or assessments in the ordinary course of business. In the opinion of management, the outcome of these matters is not likely to have any material effect on the financial position, results of operations, or cash flows of the Company.

17. Commitments and Contingencies

Litigation — The Company may be exposed to certain claims or assessments in the ordinary course of business. In the opinion of management, the outcome of these matters is not likely to have any material effect on the financial position, results of operations, or cash flows of the Company.

Commitments — On January 14, 2011, the Company signed a sublease agreement for office space in Cambridge, Massachusetts that expired on July 31, 2011. Monthly rental payments under this sublease were $9.0 thousand and the Company moved into the space in February 2011. On July 15, 2011, the Company entered into an operating lease agreement to remain in the same Cambridge, Massachusetts location. The term of the lease is August 1, 2011 through July 31, 2014. Monthly rental payments under the new lease are approximately $15.0 thousand for the first 12 months and approximately $16.0 thousand for the 24 months thereafter.

Rent expense for the years ended December 31, 2013, 2012 and 2011 was $0.2 million, $0.2 million and $0.1 million, respectively.