Sec Form 4 Filing - SAINE TOM @ Spok Holdings, Inc - 2018-03-09

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person SAINE TOM 2. Issuer Name and Ticker or Trading Symbol Spok Holdings, Inc [ SPOK] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Information Officer (Last) (First) (Middle) C/O SPOK HOLDINGS, INC., 6850 VERSAR CENTER SUITE 420 3. Date of Earliest Transaction (MM/DD/YY) 03/09/2018 (Street) SPRINGFIELD, VA22151 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/09/2018 M 5,940 ( 1 ) A 17,844 D Common Stock 03/09/2018 F 2,546 ( 3 ) D $ 15.9 15,298 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units ( 2 ) 03/09/2 018 M 5,940 ( 4 ) ( 4 ) Common Stock 5,940 $ 0 38,659 D Restricted Stock Units ( 5 ) 03/09/2018 D 5,940 ( 5 ) ( 5 ) Common Stock 5,940 $ 0 32,719 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SAINE TOM C/O SPOK HOLDINGS, INC. 6850 VERSAR CENTER SUITE 420 SPRINGFIELD, VA22151 Chief Information Officer Signatures /TOM SAINE/ 03/09/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On March 9, 2018, shares were issued upon vesting of Restricted Stock Units ("RSUs") granted to Mr. Saine under the Spok Holdings, Inc. 2015 Long Term Incentive Plan (the "2015 LTIP"). ( 2 )RSUs were granted to Mr. Saine under the 2015 LTIP. Each RSU represents a contingent right to receive one share of the issuer's Common Stock. ( 3 )On March 9, 2018 Mr. Saine surrendered 2,546 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 2015 Long Term Incentive Plan. The price was based on the closing price per share of March 2, 2018 as reported on NASDAQ. ( 4 )On March 9, 2018 5,940 shares vested under the 2015 LTIP. ( 5 )On March 9, 2018, 5,940 shares were forfeited due to performance criteria of the 2015 LTIP not being met.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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