UNITED STATES SECURITIES AND EXCHANGE COMMISSION ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number: 001-32358 SPOK HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 16-1694797 (State or other jurisdiction of incorporation or organization) Washington, D.C. 20549 FORM10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quart ...