6. Lease Obligations

 

In July 2015, we exercised our option to extend the lease for our office space through December 2016. At December 31, 2015, the remaining minimum rental payments under this operating lease were $651,000. We subsequently amended the lease agreement in February 2016 to extend the lease through 2019 and to add additional space. 

 

We had operating leases for automobiles provided to our sales force and medical science liaisons through June 30, 2015, the date on which we discontinued the program.

 

Rent expenses amounted to $678,000,  $609,000 and $428,000 for the years ended December 31, 2015,  2014 and 2013, respectively.