Commitments and Contingencies

9 Months Ended

Sep. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies — There have been no material changes during the three months or nine months ended September 30, 2015 to the commitments and contingencies previously reported in the 2014 Annual Report except as noted below.

In February 2015, we amended an existing agreement with a vendor for network services over a forty-seven month contract term. Spok has a remaining purchase commitment of $1.7 million as of September 30, 2015 with an expiration date of January 2019.