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

Tenable Holdings (TENB) director sells 1,390 shares over two days

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

Rhea-AI Filing Summary

Tenable Holdings, Inc. (TENB) director Linda Kay Zecher reported two open-market sales of common stock. On August 18, 2026 she sold 700 shares at a weighted average price of $35.46, with individual trades between $35.38 and $35.54. On August 19, 2026 she sold 690 shares at a weighted average price of $35.76, with trades between $35.74 and $35.99. The Rule 10b5-1 trading-plan box was not checked.

Positive

  • None.

Negative

  • None.
Insider Zecher Linda Kay
Role Director
Sold 1,390 shs ($49K)
Type Security Shares Price Value
Sale Common Stock F2 690 $35.76 $25K
Sale Common Stock F1 700 $35.46 $25K
Holdings After Transaction: Common Stock — 7,012 shares (Direct)
Footnotes (2)
  1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.38 - 35.54, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (2) to this Form 4.
  2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.74 - $35.99, inclusive.
Shares sold August 18, 2026 700 shares Common stock sale by director Linda Kay Zecher
Weighted average price August 18, 2026 $35.46 per share Shares sold in multiple transactions between $35.38 and $35.54
Price range August 18, 2026 $35.38–$35.54 per share Range of prices for the 700 shares sold
Shares sold August 19, 2026 690 shares Common stock sale by director Linda Kay Zecher
Weighted average price August 19, 2026 $35.76 per share Shares sold in multiple transactions between $35.74 and $35.99
Price range August 19, 2026 $35.74–$35.99 per share Range of prices for the 690 shares sold
Total shares sold 1,390 shares Aggregate of both reported sales, net-sell direction
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
open market or private transaction financial
"transaction code description: Sale in open market or private transaction"
multiple transactions financial
"These shares were sold in multiple transactions at prices ranging from"

FAQ

What insider activity did TENB director Linda Kay Zecher report in this Form 4?
Linda Kay Zecher reported two sales of Tenable Holdings, Inc. common stock, totaling 1,390 shares, executed on August 18 and 19, 2026 in open-market or private transactions at weighted average prices around the mid‑$35 range.

How many TENB shares did Linda Kay Zecher sell on August 18, 2026 and at what prices?
On August 18, 2026, Linda Kay Zecher sold 700 shares of Tenable Holdings, Inc. common stock at a weighted average price of $35.46, with individual trades executed at prices ranging from $35.38 to $35.54, inclusive.

How many TENB shares did Linda Kay Zecher sell on August 19, 2026 and at what prices?
On August 19, 2026, she sold 690 shares of Tenable Holdings, Inc. common stock at a weighted average price of $35.76, with individual trades executed at prices ranging from $35.74 to $35.99, inclusive.

Were Linda Kay Zecher’s TENB stock sales made under a Rule 10b5-1 trading plan?
No. The filing’s Rule 10b5-1 checkbox is not checked, and the footnotes describe the sales only as open-market or private transactions with weighted average pricing over specified price ranges.

What is the total number of TENB shares sold by Linda Kay Zecher in this Form 4?
Across both transactions, Linda Kay Zecher sold a total of 1,390 shares of Tenable Holdings, Inc. common stock, consisting of 700 shares on August 18, 2026 and 690 shares on August 19, 2026.

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Form 4 Insider Transactions: What Each Field Means →
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*
Zecher Linda Kay
(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)
08/18/2026		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 Stock08/18/2026S700D$35.46(1)7,702D
Common Stock08/19/2026S690D$35.76(2)7,012D
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
Explanation of Responses:
1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.38 - 35.54, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (2) to this Form 4.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.74 - $35.99, inclusive.
Remarks:
/s/ David Bartholomew, Attorney-in-Fact08/20/2026
** 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)

Source: View Original Filing on SEC EDGAR