A. Brooke Seawell - 15 Dec 2025 Form 4 Insider Report for Tenable Holdings, Inc. (TENB)

Role
Director
Signature
/s/ David Bartholomew, Attorney-in-Fact
Issuer symbol
TENB
Transactions as of
15 Dec 2025
Net transactions value
-$1,743,400
Form type
4
Filing time
17 Dec 2025, 19:51:08 UTC
Previous filing
04 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
SEAWELL A BROOKE Director C/O TENABLE HOLDINGS, INC., 6100 MERRIWEATHER DRIVE, COLUMBIA /s/ David Bartholomew, Attorney-in-Fact 17 Dec 2025 0001197652

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TENB Common Stock Options Exercise $1,110,900 +115,000 $9.66 115,000 15 Dec 2025 Trust F1
transaction TENB Common Stock Sale $2,854,300 -115,000 -100% $24.82 0 15 Dec 2025 Trust F1, F2, F3
holding TENB Common Stock 9,230 15 Dec 2025 Direct
holding TENB Common Stock 15,000 15 Dec 2025 Trust F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction TENB Employee Stock Option (right to buy) Options Exercise $0 -115,000 -100% $0.000000 0 15 Dec 2025 Common Stock 115,000 $9.66 Trust F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reporting Person is the Trustee of the Rosemary and A. Brooke Seawell Revocable Trust (Administrative Trust) ("Trust").
F2 The reported transaction was effected as part of estate administration of the Trust.
F3 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.67 - $25.01, 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 footnote (3) to this Form 4.
F4 Reporting Person is Trustee of the Alexander Brooke Seawell Revocable Trust.
F5 100% of the shares underlying the option vested on October 26, 2021.