Item 7.01. Regulation FD Disclosure.

A copy of Spok Holdings, Inc.'s ("Spok") letter to Acacia Research Corporation ("Acacia") delivered today is attached hereto as Exhibit 99.1.

The information in this Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01. Financial Statements and Exhibits.





(d) Exhibits:



Exhibit    Description
             Spok Holdings, Inc. Letter to Acacia Research Corporation, dated
  99.1     September 20, 2021
           Cover Page Interactive Data File (formatted as inline XBRL and contained
104        in Exhibit 101)

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