    <SEC-DOCUMENT>0001660280-19-000018-index.html : 20190403
    <SEC-HEADER>0001660280-19-000018.hdr.sgml : 20190403
    <ACCEPTANCE-DATETIME>20190403162654
    ACCESSION NUMBER:		0001660280-19-000018
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		2
    FILED AS OF DATE:		20190403
    DATE AS OF CHANGE:		20190403
    EFFECTIVENESS DATE:		20190403

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Tenable Holdings, Inc.
    		CENTRAL INDEX KEY:			0001660280
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
    		IRS NUMBER:				475580846
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38600
    		FILM NUMBER:		19729322

    	BUSINESS ADDRESS:
    		STREET 1:		7021 COLUMBIA GATEWAY DRIVE, SUITE 500
    		CITY:			COLUMBIA
    		STATE:			MD
    		ZIP:			21046
    		BUSINESS PHONE:		410-872-0555

    	MAIL ADDRESS:
    		STREET 1:		7021 COLUMBIA GATEWAY DRIVE, SUITE 500
    		CITY:			COLUMBIA
    		STATE:			MD
    		ZIP:			21046
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>tenable-2019defa.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: tenable-2019defa.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>tenablenotice.jpg
    <TEXT>
    Document 2 - file: tenablenotice.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>