X0306 4/A 2018-12-31 2019-01-04 0 0001289945 Spok Holdings, Inc SPOK 0001757839 Rice Calvin C/O SPOK HOLDINGS, INC. 6850 VERSAR CTR STE 400 SPRINGFIELD VA 22151 0 1 0 0 Controller Common Stock 2018-12-31 4 M 0 700 13.26 A 700 D Common Stock 2018-12-31 4 F 0 248 13.26 D 452 D Restricted Stock Units 2018-12-31 4 M 0 700 0.00 D Common Stock 700 4605 D On December 31, 2017, shares were issued upon vesting of Restricted Stock Units ("RSUs") granted to Mr. Rice. Each RSU represents a contingent right to receive one share of the issuer's Common Stock. On December 31, 2018, Mr. Rice surrendered 248 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, 700 shares vested. This Form 4A is being filed to correct the price to $13.26. /CALVIN RICE/ 2019-01-07