X0306 4 2018-12-31 0 0001289945 Spok Holdings, Inc SPOK 0001447706 Woods-Keisling Sharon C/O SPOK HOLDINGS, INC. 6850 VERSAR CENTER SUITE 420 SPRINGFIELD VA 22151 0 1 0 0 Corporate Secretary, Treasurer Common Stock 2018-12-31 4 M 0 2391 13.26 A 9391 D Common Stock 2018-12-31 4 F 0 847 13.26 D 8544 D Restricted Stock Units 2018-12-31 4 M 0 2341 0.00 D Common Stock 2391 17719 D On December 31, 2018, shares were issued upon vesting of Restricted Stock Units ("RSUs") granted to Ms. Woods. Each RSU represents a contingent right to receive one share of the issuer's Common Stock. On December 31, 2018, Ms. Woods surrendered 847 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, 2,391 shares vested. /SHARON WOODS KEISLING/ 2019-01-04