STOCK TITAN

[Form 4] Tenable Holdings, Inc. Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Tenable Holdings director John C. Huffard Jr. reported routine equity compensation activity involving restricted stock units and common stock. On May 13, 2026, 6,062 RSUs fully vested and were exercised into 6,062 shares of common stock held directly. These RSUs had 100% of the shares underlying them vest as of that date.

On the same day, Huffard received a new grant of 9,718 RSUs, each representing a contingent right to receive one share of Tenable common stock. All shares underlying this new RSU grant vest on the earlier of May 13, 2027 or Tenable’s next annual shareholder meeting, subject to his continued service and specified accelerated vesting conditions.

In addition to his direct holdings, Huffard reports indirect ownership of Tenable common stock through various trusts and his spouse, including 74,575 shares and 390,183 shares held by trusts and 31,847 shares held by his spouse.

Positive

  • None.

Negative

  • None.
Insider Huffard John C Jr
Role null
Type Security Shares Price Value
Exercise Restricted Stock Units 6,062 $0.00 --
Grant/Award Restricted Stock Units 9,718 $0.00 --
Exercise Common Stock 6,062 $0.00 --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 6,062 shares (Direct, null); Common Stock — 31,847 shares (Indirect, By Spouse)
Footnotes (1)
  1. Mary Kathryn Braden Huffard as Trustee of the Mary Kathryn Braden Huffard Revocable Trust U/T/A dated March 2, 2012. Mary Kathryn Braden Huffard and Jonathan M. Forster, as Trustees of The Three Suns 2019 Non-Exempt Irrevocable Trust U/T/A dated November 15, 2019 ("Trust"). The Reporting Person's spouse and children are the beneficiaries of the Trust. The Trust is split in three separate trusts, but reported as one. On October 20, 2025, the Reporting Person contributed 20,987 shares to the John Cloyd Huffard, Jr. Revocable Trust U/T/A dated March 2, 2012. The Trustees of the John Cloyd Huffard Jr Revocable Trust U/T/A dated March 2, 2012 are John Cloyd Huffard Jr and Mary Kathryn Braden Huffard. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock. 100% of the shares underlying the RSUs vested as of May 13, 2026. 100% of the shares underlying the RSUs vest on the earlier of May 13, 2027 or the Issuer's next annual shareholder meeting, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date, and subject to accelerated vesting in specified circumstances.
SEC Form 4
FORM 4UNITED 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).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Huffard John C Jr

(Last)(First)(Middle)
C/O TENABLE HOLDINGS, INC.
6100 MERRIWEATHER DRIVE

(Street)
COLUMBIA MARYLAND 21044

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Tenable Holdings, Inc. [ TENB ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock05/13/2026M6,062A$06,062D
Common Stock31,847IBy Spouse(1)
Common Stock390,183IBy Trust(2)
Common Stock74,575(3)IBy Trust(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units(5)05/13/2026M6,062 (6) (6)Common Stock6,062$00D
Restricted Stock Units(5)05/13/2026A9,718 (7) (7)Common Stock9,718$09,718D
Explanation of Responses:
1. Mary Kathryn Braden Huffard as Trustee of the Mary Kathryn Braden Huffard Revocable Trust U/T/A dated March 2, 2012.
2. Mary Kathryn Braden Huffard and Jonathan M. Forster, as Trustees of The Three Suns 2019 Non-Exempt Irrevocable Trust U/T/A dated November 15, 2019 ("Trust"). The Reporting Person's spouse and children are the beneficiaries of the Trust. The Trust is split in three separate trusts, but reported as one.
3. On October 20, 2025, the Reporting Person contributed 20,987 shares to the John Cloyd Huffard, Jr. Revocable Trust U/T/A dated March 2, 2012.
4. The Trustees of the John Cloyd Huffard Jr Revocable Trust U/T/A dated March 2, 2012 are John Cloyd Huffard Jr and Mary Kathryn Braden Huffard.
5. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Issuer common stock.
6. 100% of the shares underlying the RSUs vested as of May 13, 2026.
7. 100% of the shares underlying the RSUs vest on the earlier of May 13, 2027 or the Issuer's next annual shareholder meeting, subject to the Reporting Person's continuous service with the Issuer as of the applicable vesting date, and subject to accelerated vesting in specified circumstances.
Remarks:
/s/ David Bartholomew, Attorney-in-Fact05/15/2026
** Signature of Reporting PersonDate
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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)