Mark C. Thurmond sold $862k of TENB
Co-Chief Executive Officer at Tenable Holdings, Inc.. 28,500 shares at an average of $30.25, traded Aug 25, 2025, filed Aug 26, 2025.
Score components
- +25RoleCEO
- +23Trade size$862k at market
- +5Share of holdings soldSold 22% of holdings
- +15Cluster4 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m +0.0%, 3m -10.3%, 6m -38.1%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001660280-25-000104, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 22, 2025 | MOption exercise Common Stock | +1,162 | $0.00 | $0 | 73,889 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Common Stock | +2,267 | $0.00 | $0 | 76,156 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Common Stock | +3,713 | $0.00 | $0 | 79,869 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Common Stock | +46,585 | $0.00 | $0 | 126,454 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Common Stock | +4,368 | $0.00 | $0 | 130,822 | Aug 26, 2025 |
| Aug 25, 2025 | SOpen-market sale Common Stock | -28,500 | $30.25 | $862k | 102,322 | Aug 26, 2025 |
| Aug 25, 2025 | MOption exercise Common Stock | +1,363 | $0.00 | $0 | 103,685 | Aug 26, 2025 |
| Aug 25, 2025 | MOption exercise Common Stock | +3,857 | $0.00 | $0 | 107,542 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Performance Restricted Stock Unitsderivative | -1,162 | $0.00 | $0 | 6,978 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Performance Restricted Stock Unitsderivative | -2,267 | $0.00 | $0 | 22,674 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Restricted Stock Unitsderivative | -3,713 | $0.00 | $0 | 22,278 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Restricted Stock Unitsderivative | -46,585 | $0.00 | $0 | 139,758 | Aug 26, 2025 |
| Aug 22, 2025 | MOption exercise Restricted Stock Unitsderivative | -4,368 | $0.00 | $0 | 43,680 | Aug 26, 2025 |
| Aug 25, 2025 | MOption exercise Performance Restricted Stock Unitsderivative | -1,363 | $0.00 | $0 | 2,728 | Aug 26, 2025 |
| Aug 25, 2025 | MOption exercise Restricted Stock Unitsderivative | -3,857 | $0.00 | $0 | 7,714 | Aug 26, 2025 |
Related signals
Other insiders at Tenable Holdings, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 35Weak | Tenable Holdings, Inc. | Linda Kay Zecher director | $49k 1,390 shares | -17% | |
| 37Weak | Tenable Holdings, Inc. | Linda Kay Zecher director | $92k 2,620 shares | -24% | |
| 11Weak | Tenable Holdings, Inc. | Raymond Vicks Jr. director | $65k 1,819 shares | -8% | |
| 53Moderate | TENBbuy Tenable Holdings, Inc. | Matthew Charles Brown Chief Financial Officer | $258k 12,000 shares | +65% | |
| 47Moderate | Tenable Holdings, Inc. | Raymond Vicks Jr. director | $100k 4,500 shares | +38% | |
| 50Moderate | Tenable Holdings, Inc. | Arthur W Coviello Jr director | $258k 12,000 shares | +30% | |
| 45Moderate | TENBsell Tenable Holdings, Inc. | A Brooke Seawell director | $2.9M 115,000 shares | -100% | |
| 0Weak | TENBsell Tenable Holdings, Inc. | Barron Anschutz other | $28k 976 shares | -2% | |
| 67Notable | Tenable Holdings, Inc. | A Brooke Seawell director | $462k 15,000 shares | -100% | |
| 46Moderate | Tenable Holdings, Inc. | A Brooke Seawell director | $139k 4,622 shares | -24% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.