X0306 4 2015-03-13 1 0001289945 Spok Holdings, Inc SPOK 0001332059 Endsley Shawn Eric C/O SPOK HOLDINGS, INC. 6850 VERSAR CENTER SUITE 420 SPRINGFIELD VA 22151 0 1 0 0 Chief Financial Officer Common Stock 2015-03-13 4 M 0 24079 A 50684 D Common Stock 2015-03-13 4 F 0 7971 17.36 D 42713 D Restricted Stock Units 2015-03-13 4 M 0 24079 0.00 D Common Stock 24079 10800 D On March 13, 2015, shares were issued upon vesting of Restricted Stock Units ("RSUs") granted to Mr. Endsley under the Spok Holdings, Inc. 2011 Long Term Incentive Plan (the "2011 LTIP"). RSUs were granted to Mr. Endsley under the 2011 LTIP. Each RSU represents a contingent right to receive one share of the issuer's Common Stock. On March 13 2015, Mr. Endsley surrendered 7,971 shares of Spok Holdings, Inc. ("the Company") common stock to the Company in payment of required tax withholdings due upon vesting of the Company's 2011 Long Term Incentive Plan. The price was based on the closing price per share of March 6, 2015 as reported on NASDAQ. On March 13, 2015, 24,079 shares vested under the 2011 LTIP. /SHAWN ENDSLEY/ 2015-03-13