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Subsequent events
9 Months Ended
Sep. 30, 2015
Subsequent events

16. Subsequent events

In October 2015, the 9.0 million shares of common stock loaned to Bank of America, N.A. pursuant to a stock lending agreement dated August 18, 2010 were returned. The stock lending agreement terminated a specified number of days following the date as of which the entire principal amount of Senior Convertible Notes due 2015 ceased to be outstanding. The Company settled all payments and deliveries in respect of such convertible notes on August 17, 2015.

Borrowings under Sanofi Loan Facility

On October 27, 2015, the Company borrowed $14.7 million under the Sanofi Loan Facility to finance the portion of its losses for the three months ended September 30, 2015 (see Note 7 — Collaboration arrangement).