SEC Form 4

FORM 4		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 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Insight Holdings Group, LLC (Last) (First) (Middle) C/O INSIGHT PARTNERS 1114 AVENUE OF THE AMERICAS, 36TH FLOOR (Street) NEW YORK NY 10036 (City) (State) (Zip)	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)
	3. Date of Earliest Transaction (Month/Day/Year) 05/20/2020
	4. If Amendment, Date of Original Filed (Month/Day/Year)	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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	05/20/2020		S		18,536	D	$29.75(5)	3,799,349	I	See footnote(1)
Common Stock	05/20/2020		S		14,901	D	$29.75(5)	3,054,455	I	See footnote(2)
Common Stock	05/20/2020		S		13,702	D	$29.75(5)	2,808,582	I	See footnote(3)
Common Stock	05/20/2020		S		16,864	D	$29.75(5)	3,456,715	I	See footnote(4)
Common Stock	05/21/2020		S		10,135	D	$29.09(6)	3,789,214	I	See footnote(1)
Common Stock	05/21/2020		S		8,148	D	$29.09(6)	3,046,307	I	See footnote(2)
Common Stock	05/21/2020		S		7,492	D	$29.09(6)	2,801,090	I	See footnote(3)
Common Stock	05/21/2020		S		9,221	D	$29.09(6)	3,447,494	I	See footnote(4)
Common Stock	05/22/2020		S		183,493	D	$29.19(7)	3,605,721	I	See Footnote(1)
Common Stock	05/22/2020		S		147,518	D	$29.19(7)	2,898,789	I	See Footnote(2)
Common Stock	05/22/2020		S		135,643	D	$29.19(7)	2,665,447	I	See Footnote(3)
Common Stock	05/22/2020		S		166,945	D	$29.19(7)	3,280,549	I	See Footnote(4)

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. 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: 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

1. Name and Address of Reporting Person* Insight Holdings Group, LLC (Last) (First) (Middle) C/O INSIGHT PARTNERS 1114 AVENUE OF THE AMERICAS, 36TH FLOOR (Street) NEW YORK NY 10036 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Insight Venture Associates Growth-Buyout Coinvestment Ltd. (Last) (First) (Middle) C/O INSIGHT PARTNERS 1114 AVENUE OF THE AMERICAS, 36TH FLOOR (Street) NEW YORK NY 10036 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Insight Venture Associates Growth-Buyout Coinvestment, L.P. (Last) (First) (Middle) C/O INSIGHT PARTNERS 1114 AVENUE OF THE AMERICAS, 36TH FLOOR (Street) NEW YORK NY 10036 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Insight Venture Partners Growth-Buyout Coinvestment Fund, L.P. (Last) (First) (Middle) C/O INSIGHT PARTNERS 1114 AVENUE OF THE AMERICAS, 36TH FLOOR (Street) NEW YORK NY 10036 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Insight Venture Partners Growth-Buyout Coinvestment Fund (Cayman), L.P. (Last) (First) (Middle) C/O INSIGHT PARTNERS 1114 AVENUE OF THE AMERICAS, 36TH FLOOR (Street) NEW YORK NY 10036 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Insight Venture Partners Growth-Buyout Coinvestment Fund (Delaware), L.P. (Last) (First) (Middle) C/O INSIGHT PARTNERS 1114 AVENUE OF THE AMERICAS, 36TH FLOOR (Street) NEW YORK NY 10036 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Insight Venture Partners Growth-Buyout Coinvestment Fund (B), L.P. (Last) (First) (Middle) C/O INSIGHT PARTNERS 1114 AVENUE OF THE AMERICAS, 36TH FLOOR (Street) NEW YORK NY 10036 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

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

Remarks:

This Form 4 is the second 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

	Insight Holdings Group, LLC, by Blair Flicker, its Authorized Signatory, /s/ Blair Flicker	05/22/2020
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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