X0306 4 2018-12-31 0 0001289945 Spok Holdings, Inc SPOK 0001253133 KELLY VINCENT D C/O SPOK HOLDINGS, INC. 6850 VERSAR CTR STE 420 SPRINGFIELD VA 22151 1 1 0 0 President & CEO Common Stock 2018-12-31 4 M 0 29890 13.26 A 106148 I Vincent DePaul Kelly, Trustee of the Vincent DePaul Kelly Third Amended and Restated Revocable Trust Common Stock 2018-12-31 4 F 0 13876 13.26 D 92272 I Vincent DePaul Kelly, Trustee of the Vincent DePaul Kelly Third Amended and Restated Revocable Trust Restricted Stock Units 2018-12-31 4 M 0 29890 0.00 D Common Stock 29890 218480 I Vincent DePaul Kelly, Trustee of the Vincent DePaul Kelly Third Amended and Restated Revocable Trust On December 31, 2018, shares were issued upon vesting of Restricted Stock Units ("RSUs") granted to Mr. Kelly. Each RSU represents a contingent right to receive one share of the issuer's Common Stock. On December 31, 2018, Mr. Kelly surrendered 13,876 shares of Spok Holdings, Inc. ("the Company") common stock to the Company in payment of required tax withholdings due upon vesting of the time based awards. The price was based on the closing price per share of December 31, 2018 as reported on NASDAQ. On December 31, 2018, 29,890 shares vested. /Vincent D. Kelly/ 2019-01-04