Commitments	3 Months Ended
Mar. 31, 2019
Commitments
Commitments	9. Commitments Severance Arrangement In March 2019, we entered into a Severance Agreement and General Release (Severance Agreement) with Christopher M. Cashman (Cashman), our former Chief Executive Officer. In connection with this Severance Agreement, we agreed to pay certain severance benefits for one year to Cashman, including salary and benefits continuation and a prorated bonus totaling $0.6 million. As of March 31, 2019, $0.5 million in severance benefits remained unpaid. In addition, certain of Cashman’s outstanding stock option agreements were modified to accelerate vesting and extend the exercise period, resulting in additional compensation cost of $0.4 million.

Commitments

3 Months Ended

Mar. 31, 2019

9. Commitments

Severance Arrangement

In March 2019, we entered into a Severance Agreement and General Release (Severance Agreement) with Christopher M. Cashman (Cashman), our former Chief Executive Officer. In connection with this Severance Agreement, we agreed to pay certain severance benefits for one year to Cashman, including salary and benefits continuation and a prorated bonus totaling $0.6 million. As of March 31, 2019, $0.5 million in severance benefits remained unpaid. In addition, certain of Cashman’s outstanding stock option agreements were modified to accelerate vesting and extend the exercise period, resulting in additional compensation cost of $0.4 million.