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 OF SECURITIES
                                                                                  
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response...
0.5                       
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Insight Holdings Group, LLC
2. Issuer Name and Ticker or Trading Symbol

Tenable Holdings, Inc. [ TENB ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    __X__ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle)

C/O INSIGHT PARTNERS, 1114 AVENUE OF THE AMERICAS, 36TH FLOOR
3. Date of Earliest Transaction (MM/DD/YYYY)

5/20/2020
(Street)

NEW YORK, NY 10036
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 5/20/2020  S  39437 D$29.75 (6)8083489 I See Footnote (1)
Common Stock 5/20/2020  S  19595 D$29.75 (6)4016489 I See Footnote (2)
Common Stock 5/20/2020  S  4178 D$29.75 (6)856444 I See Footnote (3)
Common Stock 5/20/2020  S  787 D$29.75 (6)161354 I See Footnote (4)
Common Stock 5/21/2020  S  21564 D$29.09 (7)8061925 I See Footnote (1)
Common Stock 5/21/2020  S  10714 D$29.09 (7)4005775 I See Footnote (2)
Common Stock 5/21/2020  S  2285 D$29.09 (7)854159 I See Footnote (3)
Common Stock 5/21/2020  S  430 D$29.09 (7)160924 I See Footnote (4)
Common Stock 5/22/2020  S  390398 D$29.19 (8)7671527 I See Footnote (1)
Common Stock 5/22/2020  S  193980 D$29.19 (8)3811795 I See Footnote (2)
Common Stock 5/22/2020  S  41363 D$29.19 (8)812796 I See Footnote (3)
Common Stock 5/22/2020  S  7793 D$29.19 (8)153131 I See Footnote (4)
Common Stock         25699 I See Footnote (5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares

Explanation of Responses:
(1) See Exhibit 99.1
(2) See Exhibit 99.1
(3) See Exhibit 99.1
(4) See Exhibit 99.1
(5) See Exhibit 99.1
(6) See Exhibit 99.1
(7) See Exhibit 99.1.
(8) See Exhibit 99.1.

Remarks:
This Form 4 is the first of two Forms 4 filed relating to the same event. The Form 4 has been split into two filings because there are more than 10 reporting persons in total, and the SEC's EDGAR filing system limits a single Form 4 to a maximum of 10 reporting person. Each Form 4 is filed by Designated Filer, Insight Holdings Group, LLC.

Exhibit List
------------
Exhibit 99.1 - Explanation of Responses
Exhibit 99.2 - Joint Filers' Signatures
Exhibit 99.3 - Joint Filer Information

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Insight Holdings Group, LLC
C/O INSIGHT PARTNERS
1114 AVENUE OF THE AMERICAS, 36TH FLOOR
NEW YORK, NY 10036

X

Insight Venture Associates IX, Ltd.
C/O INSIGHT PARTNERS
1114 AVENUE OF THE AMERICAS, 36TH FLOOR
NEW YORK, NY 10036

X

Insight Venture Associates IX, L.P.
C/O INSIGHT PARTNERS
1114 AVENUE OF THE AMERICAS, 36TH FLOOR
NEW YORK, NY 10036

X

Insight Venture Partners IX, L.P.
C/O INSIGHT PARTNERS
1114 AVENUE OF THE AMERICAS, 36TH FLOOR
NEW YORK, NY 10036

X

Insight Venture Partners (Cayman) IX, L.P.
C/O INSIGHT PARTNERS
1114 AVENUE OF THE AMERICAS, 36TH FLOOR
NEW YORK, NY 10036

X

Insight Venture Partners (Delaware) IX, L.P.
C/O INSIGHT PARTNERS
1114 AVENUE OF THE AMERICAS, 36TH FLOOR
NEW YORK, NY 10036

X

Insight Venture Partners IX (Co-Investors), L.P.
C/O INSIGHT PARTNERS
1114 AVENUE OF THE AMERICAS, 36TH FLOOR
NEW YORK, NY 10036

X

IVP (Venice), L.P.
C/O INSIGHT PARTNERS
1114 AVENUE OF THE AMERICAS, 36TH FLOOR
NEW YORK, NY 10036

X


Signatures
Insight Holdings Group, LLC, by Blair Flicker, its Authorized Signatory, /s/ Blair Flicker5/22/2020
**Signature of Reporting PersonDate

Tenable (NASDAQ:TENB)
Historical Stock Chart
From May 2020 to Jun 2020 Click Here for more Tenable Charts.
Tenable (NASDAQ:TENB)
Historical Stock Chart
From Jun 2019 to Jun 2020 Click Here for more Tenable Charts.