Thurmond Mark C. - Insider Non-Derivative Transactions at Tenable Holdings, Inc. (TENB) - (SEC)
Updated on January 3, 2026.
According to recent SEC insider information filed on Nov 24, 2025, Thurmond Mark C.'s relationship to Tenable Holdings, Inc. (TENB) is Director,Officer (Co-Chief Executive Officer), and currently has 115,751 shares of Common Stock.
The chart below shows the number of shares owned, and the table shows the recent insider transactions.
You can see similar information for other TENB insiders.
Related Topics: SEC Topic List.
Data Source: SEC.
Thurmond Mark C. - Insider Non-Derivative Transactions of TENB Common Stock
Thurmond Mark C. - Insider Non-Derivative Transactions at TENB
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| Date | Transaction | No. of Shares | Price Per Share | Shares Owned After Transactions |
|---|---|---|---|---|
| Nov 25, 2025 | F -- (Common Stock) | 660 | 25.68 | 105704 |
| Nov 25, 2025 | F -- (Common Stock) | 562 | 25.68 | 106304 |
| Nov 25, 2025 | M -- (Common Stock) | 1363 | 0 | 106364 |
| Nov 25, 2025 | M -- (Common Stock) | 1162 | 0 | 106866 |
| Nov 25, 2025 | F -- (Common Stock) | 1097 | 25.68 | 107474 |
| Nov 25, 2025 | M -- (Common Stock) | 2267 | 0 | 108571 |
| Nov 25, 2025 | F -- (Common Stock) | 1865 | 25.68 | 109466 |
| Nov 25, 2025 | M -- (Common Stock) | 3857 | 0 | 111331 |
| Nov 25, 2025 | F -- (Common Stock) | 1796 | 25.68 | 111383 |
| Nov 25, 2025 | M -- (Common Stock) | 3713 | 0 | 113179 |
| Nov 25, 2025 | F -- (Common Stock) | 2112 | 25.68 | 113639 |
| Nov 25, 2025 | M -- (Common Stock) | 4368 | 0 | 115751 |
| Aug 27, 2025 | Sell -- (Common Stock) | 2541 | 29.84 | 105001 |
| Aug 26, 2025 | Sell -- (Common Stock) | 28500 | 30.25 | 102322 |
| Aug 26, 2025 | M -- (Common Stock) | 1363 | 0 | 103685 |
| Aug 26, 2025 | M -- (Common Stock) | 3857 | 0 | 107542 |
| Aug 23, 2025 | M -- (Common Stock) | 1162 | 0 | 73889 |
| Aug 23, 2025 | M -- (Common Stock) | 2267 | 0 | 76156 |
| Aug 23, 2025 | M -- (Common Stock) | 3713 | 0 | 79869 |
| Aug 23, 2025 | M -- (Common Stock) | 46585 | 0 | 126454 |
| Aug 23, 2025 | M -- (Common Stock) | 4368 | 0 | 130822 |
| May 28, 2025 | Sell -- (Common Stock) | 2483 | 32.45 | 72727 |
| May 24, 2025 | Sell -- (Common Stock) | 5577 | 31.98 | 75210 |
| May 24, 2025 | M -- (Common Stock) | 1363 | 0 | 76306 |
| May 24, 2025 | M -- (Common Stock) | 3857 | 0 | 80163 |
| May 23, 2025 | M -- (Common Stock) | 1162 | 0 | 64595 |
| May 23, 2025 | M -- (Common Stock) | 2267 | 0 | 66862 |
| May 23, 2025 | M -- (Common Stock) | 3713 | 0 | 70575 |
| May 23, 2025 | M -- (Common Stock) | 4368 | 0 | 74943 |
| Feb 28, 2025 | Sell -- (Common Stock) | 5984 | 38.16 | 63433 |
| Feb 27, 2025 | Sell -- (Common Stock) | 4878 | 38.19 | 69417 |
| Feb 26, 2025 | Sell -- (Common Stock) | 3606 | 38.48 | 74295 |
| Feb 25, 2025 | M -- (Common Stock) | 1363 | 0 | 42629 |
| Feb 25, 2025 | M -- (Common Stock) | 1161 | 0 | 43790 |
| Feb 25, 2025 | M -- (Common Stock) | 9069 | 0 | 52859 |
| Feb 25, 2025 | M -- (Common Stock) | 3857 | 0 | 56716 |
| Feb 25, 2025 | M -- (Common Stock) | 3713 | 0 | 60429 |
| Feb 25, 2025 | M -- (Common Stock) | 17472 | 0 | 77901 |
| Feb 20, 2025 | Sell -- (Common Stock) | 1341 | 39.56 | 41266 |
| Feb 19, 2025 | M -- (Common Stock) | 4561 | 0 | 42607 |
| Nov 28, 2024 | Sell -- (Common Stock) | 939 | 42.95 | 38046 |
| Nov 27, 2024 | Sell -- (Common Stock) | 2537 | 42.56 | 38985 |
| Nov 27, 2024 | Sell -- (Common Stock) | 886 | 42.61 | 41522 |
| Nov 26, 2024 | Sell -- (Common Stock) | 2343 | 42.74 | 37188 |
| Nov 26, 2024 | M -- (Common Stock) | 1363 | 0 | 38551 |
| Nov 26, 2024 | M -- (Common Stock) | 3857 | 0 | 42408 |
| Nov 23, 2024 | M -- (Common Stock) | 1161 | 0 | 35818 |
| Nov 23, 2024 | M -- (Common Stock) | 3713 | 0 | 39531 |
| Nov 21, 2024 | Sell -- (Common Stock) | 823 | 40.71 | 34657 |
| Nov 20, 2024 | Sell -- (Common Stock) | 2209 | 40.72 | 35480 |
| Nov 19, 2024 | M -- (Common Stock) | 4561 | 0 | 37689 |
| Aug 28, 2024 | Sell -- (Common Stock) | 951 | 41.03 | 33128 |
| Aug 27, 2024 | Sell -- (Common Stock) | 2502 | 41.75 | 34079 |
| Aug 27, 2024 | Sell -- (Common Stock) | 881 | 41.39 | 36581 |
| Aug 24, 2024 | Sell -- (Common Stock) | 2357 | 41.54 | 32242 |
| Aug 24, 2024 | M -- (Common Stock) | 1363 | 0 | 33605 |
| Aug 24, 2024 | M -- (Common Stock) | 3857 | 0 | 37462 |
| Aug 23, 2024 | M -- (Common Stock) | 1161 | 0 | 30886 |
| Aug 23, 2024 | M -- (Common Stock) | 3713 | 0 | 34599 |
| Aug 22, 2024 | Sell -- (Common Stock) | 818 | 42.17 | 29725 |
| Aug 21, 2024 | Sell -- (Common Stock) | 2224 | 42.36 | 30543 |
| Aug 20, 2024 | M -- (Common Stock) | 4561 | 0 | 32767 |
| Jul 31, 2024 | Sell -- (Common Stock) | 4700 | 49.01 | 28206 |
| May 29, 2024 | Sell -- (Common Stock) | 949 | 43.97 | 32906 |
| May 25, 2024 | Sell -- (Common Stock) | 2506 | 43.48 | 33855 |
| May 25, 2024 | Sell -- (Common Stock) | 875 | 42.94 | 36361 |
| May 24, 2024 | Sell -- (Common Stock) | 2371 | 43.18 | 32017 |
| May 24, 2024 | M -- (Common Stock) | 1362 | 0 | 33379 |
| May 24, 2024 | M -- (Common Stock) | 3857 | 0 | 37236 |
| May 23, 2024 | M -- (Common Stock) | 1161 | 0 | 30676 |
| May 23, 2024 | M -- (Common Stock) | 3712 | 0 | 34388 |
| May 22, 2024 | Sell -- (Common Stock) | 820 | 43.55 | 29515 |
| May 21, 2024 | Sell -- (Common Stock) | 2219 | 43.76 | 30335 |
| May 18, 2024 | M -- (Common Stock) | 4561 | 0 | 32554 |
| Mar 21, 2024 | Sell -- (Common Stock) | 10824 | 49 | 27993 |
| Feb 29, 2024 | Sell -- (Common Stock) | 3644 | 46.81 | 38149 |
| Feb 28, 2024 | Sell -- (Common Stock) | 2383 | 47.44 | 41793 |
| Feb 28, 2024 | Sell -- (Common Stock) | 1095 | 47.5 | 44176 |
| Feb 27, 2024 | Sell -- (Common Stock) | 7110 | 47.72 | 45271 |
| Feb 24, 2024 | Sell -- (Common Stock) | 1684 | 47.67 | 47162 |
| Feb 24, 2024 | M -- (Common Stock) | 1362 | 0 | 48524 |
| Feb 24, 2024 | M -- (Common Stock) | 3857 | 0 | 52381 |
| Feb 23, 2024 | M -- (Common Stock) | 4648 | 0 | 35084 |
| Feb 23, 2024 | Sell -- (Common Stock) | 1089 | 47.73 | 48846 |
| Feb 23, 2024 | M -- (Common Stock) | 14851 | 0 | 49935 |
| Feb 22, 2024 | Sell -- (Common Stock) | 1450 | 46.22 | 30436 |
| Feb 21, 2024 | M -- (Common Stock) | 4561 | 0 | 31886 |
| Feb 8, 2024 | Sell -- (Common Stock) | 26175 | 51.45 | 27325 |
| Feb 7, 2024 | Sell -- (Common Stock) | 3976 | 47.34 | 53500 |
| Feb 6, 2024 | M -- (Common Stock) | 13103 | 0 | 57476 |
| Nov 29, 2023 | Sell -- (Common Stock) | 951 | 42.06 | 44373 |
| Nov 28, 2023 | Sell -- (Common Stock) | 2501 | 40.02 | 45324 |
| Nov 25, 2023 | M -- (Common Stock) | 1362 | 0 | 43969 |
| Nov 25, 2023 | M -- (Common Stock) | 3856 | 0 | 47825 |
| Nov 23, 2023 | Sell -- (Common Stock) | 827 | 40 | 42607 |
| Nov 21, 2023 | Sell -- (Common Stock) | 2197 | 39.65 | 43434 |
| Nov 18, 2023 | Sell -- (Common Stock) | 2357 | 40 | 41070 |
| Nov 18, 2023 | M -- (Common Stock) | 4561 | 0 | 45631 |
| Nov 7, 2023 | Sell -- (Common Stock) | 6368 | 36.93 | 43427 |
| Nov 4, 2023 | M -- (Common Stock) | 13103 | 0 | 49795 |
| Aug 26, 2023 | Sell -- (Common Stock) | 921 | 42.73 | 36692 |
| Aug 25, 2023 | Sell -- (Common Stock) | 2584 | 43.42 | 37613 |
| Aug 24, 2023 | M -- (Common Stock) | 1362 | 0 | 36341 |
| Aug 24, 2023 | M -- (Common Stock) | 3856 | 0 | 40197 |
| Aug 23, 2023 | Sell -- (Common Stock) | 12531 | 45.18 | 34979 |
| Aug 19, 2023 | Sell -- (Common Stock) | 2195 | 44.44 | 47510 |
| Aug 18, 2023 | M -- (Common Stock) | 4561 | 0 | 49705 |
| Aug 5, 2023 | Sell -- (Common Stock) | 6396 | 47.09 | 45144 |
| Aug 4, 2023 | M -- (Common Stock) | 13103 | 0 | 51540 |
| May 25, 2023 | Sell -- (Common Stock) | 2516 | 37.54 | 37769 |
| May 24, 2023 | M -- (Common Stock) | 5218 | 0 | 40953 |
| May 19, 2023 | Sell -- (Common Stock) | 2203 | 38.28 | 35067 |
| May 18, 2023 | M -- (Common Stock) | 4561 | 0 | 37270 |
| May 5, 2023 | Sell -- (Common Stock) | 6245 | 35.18 | 32709 |
| May 4, 2023 | M -- (Common Stock) | 13102 | 0 | 38954 |
| Mar 1, 2023 | Sell -- (Common Stock) | 2464 | 44.15 | 25852 |
| Feb 28, 2023 | Sell -- (Common Stock) | 2472 | 44.02 | 28316 |
| Feb 25, 2023 | Sell -- (Common Stock) | 4204 | 42.98 | 30788 |
| Feb 24, 2023 | M -- (Common Stock) | 5450 | 0 | 19565 |
| Feb 24, 2023 | M -- (Common Stock) | 15427 | 0 | 34992 |
| Feb 22, 2023 | Sell -- (Common Stock) | 1370 | 42.88 | 14115 |
| Feb 18, 2023 | M -- (Common Stock) | 4561 | 0 | 15485 |
| Feb 7, 2023 | Sell -- (Common Stock) | 4002 | 43.25 | 10924 |
| Feb 4, 2023 | M -- (Common Stock) | 13102 | 0 | 14926 |
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