Mark C. Thurmond is Co-Chief Executive Officer of Tenable Holdings, Inc.. Currently has a direct ownership of 72,727 shares of TENB, which is worth approximately $2.58 Million. The most recent transaction as insider was on May 27, 2025, when has been sold 2,483 shares (Common Stock) at a price of $32.45 per share, resulting in proceeds of $80,573. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 72.7K
14.65% 3M change
121.01% 12M change
Total Value Held $2.58 Million

Mark C. Thurmond Transaction History

Date Transaction Value Shares Traded Shares Held Form
May 27 2025
SELL
Open market or private sale
$80,573 $32.45 p/Share
2,483 Reduced 3.3%
72,727 Common Stock
May 23 2025
SELL
Open market or private sale
$178,352 $31.98 p/Share
5,577 Reduced 6.9%
75,210 Common Stock
May 23 2025
BUY
Exercise of conversion of derivative security
-
5,220 Added 6.11%
80,163 Common Stock
May 22 2025
BUY
Exercise of conversion of derivative security
-
11,510 Added 13.31%
74,943 Common Stock
Feb 27 2025
SELL
Open market or private sale
$228,349 $38.16 p/Share
5,984 Reduced 8.62%
63,433 Common Stock
Feb 26 2025
SELL
Open market or private sale
$186,290 $38.19 p/Share
4,878 Reduced 6.57%
69,417 Common Stock
Feb 25 2025
SELL
Open market or private sale
$138,758 $38.48 p/Share
3,606 Reduced 4.63%
74,295 Common Stock
Feb 24 2025
BUY
Exercise of conversion of derivative security
-
36,635 Added 31.99%
77,901 Common Stock
Feb 19 2025
SELL
Open market or private sale
$53,049 $39.56 p/Share
1,341 Reduced 3.15%
41,266 Common Stock
Feb 18 2025
BUY
Exercise of conversion of derivative security
-
4,561 Added 9.67%
42,607 Common Stock
Nov 27 2024
SELL
Open market or private sale
$40,330 $42.95 p/Share
939 Reduced 2.41%
38,046 Common Stock
Nov 26 2024
SELL
Open market or private sale
$145,785 $42.59 p/Share
3,423 Reduced 8.07%
38,985 Common Stock
Nov 25 2024
SELL
Open market or private sale
$100,139 $42.74 p/Share
2,343 Reduced 5.93%
37,188 Common Stock
Nov 25 2024
BUY
Exercise of conversion of derivative security
-
5,220 Added 10.96%
42,408 Common Stock
Nov 22 2024
BUY
Exercise of conversion of derivative security
-
4,874 Added 10.98%
39,531 Common Stock
Nov 20 2024
SELL
Open market or private sale
$33,504 $40.71 p/Share
823 Reduced 2.32%
34,657 Common Stock
Nov 19 2024
SELL
Open market or private sale
$89,950 $40.72 p/Share
2,209 Reduced 5.86%
35,480 Common Stock
Nov 18 2024
BUY
Exercise of conversion of derivative security
-
4,561 Added 10.8%
37,689 Common Stock
Aug 27 2024
SELL
Open market or private sale
$39,019 $41.03 p/Share
951 Reduced 2.79%
33,128 Common Stock
Aug 26 2024
SELL
Open market or private sale
$140,631 $41.57 p/Share
3,383 Reduced 9.03%
34,079 Common Stock
Aug 23 2024
SELL
Open market or private sale
$97,909 $41.54 p/Share
2,357 Reduced 6.81%
32,242 Common Stock
Aug 23 2024
BUY
Exercise of conversion of derivative security
-
5,220 Added 12.23%
37,462 Common Stock
Aug 22 2024
BUY
Exercise of conversion of derivative security
-
4,874 Added 12.35%
34,599 Common Stock
Aug 21 2024
SELL
Open market or private sale
$34,495 $42.17 p/Share
818 Reduced 2.68%
29,725 Common Stock
Aug 20 2024
SELL
Open market or private sale
$94,208 $42.36 p/Share
2,224 Reduced 6.79%
30,543 Common Stock
MCT

Mark C. Thurmond

Co-Chief Executive Officer
Columbia, MD

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