Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| TEN-PF | Kosmatos Theoharrys Evgenios | CFO and CAO | 09/18/2026 | Verkauf | 53.00 | 10,000 | 530,014 | Form 4 |
| TEN | Kosmatos Theoharrys Evgenios | CFO and CAO | 09/18/2026 | Verkauf | 53.00 | 10,000 | 530,014 | Form 4 |
| TENX | Doogan Declan | Director | 09/16/2026 | Kauf | 1.92 | 53,000 | 101,760 | Form 4 |
| TENX | Giordano Christopher Thomas | CEO | 09/15/2026 | Kauf | 1.82 | 4,850 | 8,837 | Form 4 |
| TENX | Giordano Christopher Thomas | CEO | 09/11/2026 | Kauf | 1.88 | 6,000 | 11,250 | Form 4 |
| TENX | Staab Thomas R Ii | Chief Financial Officer | 09/11/2026 | Kauf | 1.94 | 5,675 | 10,981 | Form 4 |
| TENX | ADAR1 Capital Management, LLC | 10% Owner | 09/03/2026 | Kauf | 1.78 | 900,000 | 1,604,160 | Form 4 |
| TENX | ADAR1 Capital Management, LLC | 10% Owner | 09/02/2026 | Kauf | 1.80 | 187,704 | 337,586 | Form 4 |
| TENX | ADAR1 Capital Management, LLC | 10% Owner | 09/01/2026 | Kauf | 1.80 | 179,058 | 321,570 | Form 4 |
| TENX | ADAR1 Capital Management, LLC | 10% Owner | 08/31/2026 | Kauf | 1.79 | 403,571 | 722,594 | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 2,112 | 71,681 | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 4,368 | — | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 3,754 | 127,411 | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 7,764 | — | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 1,796 | 60,956 | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 3,713 | — | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 2,947 | 100,021 | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 6,095 | — | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 1,097 | 37,232 | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 2,267 | — | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 562 | 19,074 | Form 4 |
| TENB | Thurmond Mark C. | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 1,162 | — | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 2,163 | 73,412 | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 4,519 | — | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 3,716 | 126,121 | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 7,764 | — | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 2,438 | 82,746 | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 5,095 | — | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 2,917 | 99,003 | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 6,095 | — | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 1,123 | 38,115 | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 2,345 | — | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 764 | 25,930 | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/24/2026 | Optionsausübung | — | 1,595 | — | Form 4 |
| TENB | Anschutz Barron | Chief Accounting Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 780 | 26,473 | Form 4 |
| TENB | Anschutz Barron | Chief Accounting Officer | 08/24/2026 | Optionsausübung | — | 1,629 | — | Form 4 |
| TENB | Anschutz Barron | Chief Accounting Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 602 | 20,432 | Form 4 |
| TENB | Anschutz Barron | Chief Accounting Officer | 08/24/2026 | Optionsausübung | — | 1,258 | — | Form 4 |
| TENB | Anschutz Barron | Chief Accounting Officer | 08/24/2026 | Steuer-Abgabe | 33.94 | 640 | 21,722 | Form 4 |
| TENB | Anschutz Barron | Chief Accounting Officer | 08/24/2026 | Optionsausübung | — | 1,337 | — | Form 4 |
| TENX | ADAR1 Capital Management, LLC | 10% Owner | 08/24/2026 | Kauf | 1.75 | 107,374 | 188,355 | Form 4 |
| TENB | Brown Matthew Charles | Chief Financial Officer | 08/21/2026 | Steuer-Abgabe | 34.38 | 7,400 | 254,412 | Form 4 |
| TENB | Brown Matthew Charles | Chief Financial Officer | 08/21/2026 | Optionsausübung | — | 14,544 | — | Form 4 |
| TENX | ADAR1 Capital Management, LLC | 10% Owner | 08/21/2026 | Kauf | 1.77 | 716,369 | 1,266,254 | Form 4 |
| TENX | ADAR1 Capital Management, LLC | 10% Owner | 08/20/2026 | Kauf | 1.78 | 202,124 | 359,538 | Form 4 |
| TENB | Zecher Linda Kay | Director | 08/19/2026 | Verkauf | 35.76 | 690 | 24,674 | Form 4 |
| TENB | Zecher Linda Kay | Director | 08/18/2026 | Verkauf | 35.46 | 700 | 24,822 | Form 4 |
| TEN-PF | Hatzimichalis Clio | Director | 08/13/2026 | Verkauf | 41.07 | 5,000 | 205,331 | Form 4 |
| TENB | Vicks Raymond Jr. | Director | 08/07/2026 | Verkauf | 35.94 | 1,819 | 65,375 | Form 4 |
| TENB | Zecher Linda Kay | Director | 08/07/2026 | Verkauf | 36.50 | 550 | 20,075 | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/05/2026 | Steuer-Abgabe | 36.48 | 300,736 | 10,970,849 | Form 4 |
| TENB | Vintz Stephen A | Co-Chief Executive Officer | 08/05/2026 | Optionsausübung | 16.21 | 423,434 | 6,863,865 | Form 4 |
| TENB | Zecher Linda Kay | Director | 08/04/2026 | Verkauf | 36.00 | 600 | 21,600 | Form 4 |
| TENB | Zecher Linda Kay | Director | 08/03/2026 | Verkauf | 34.00 | 1,470 | 49,980 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).