Open Insider Trading Activity for Tenable Holdings, Inc. Co-Chief Executive Officer Thurmond Mark C.
31-day price and insider activity (up to 2 years)
Daily candles with triangles for the buy and sale transactions shown below. Scroll left or zoom out to load earlier candles (up to 2 years).
▲ Insider buy
▼ Insider sale
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting TENB | 2025-08-27 | 2025-08-26 | Tenable Holdings, Inc. | Thurmond Mark C. | Co-Chief Executive Officer | Sell | 1 | 2,541 | $29.84 | $75,823.44 | 2.36% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting TENB | 2025-08-26 | 2025-08-25 | Tenable Holdings, Inc. | Thurmond Mark C. | Co-Chief Executive Officer | Sell | 1 | 28,500 | $30.25 | $862,125.00 | 21.79% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting TENB | 2025-05-29 | 2025-05-27 | Tenable Holdings, Inc. | Thurmond Mark C. | Co-Chief Executive Officer | Sell | 1 | 2,483 | $32.45 | $80,573.35 | 3.30% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting TENB | 2025-05-27 | 2025-05-23 | Tenable Holdings, Inc. | Thurmond Mark C. | Co-Chief Executive Officer | Sell | 1 | 5,577 | $31.98 | $178,352.46 | 6.90% | View Filing |