Mark C. Thurmond sold $76k of TENB
Co-Chief Executive Officer at Tenable Holdings, Inc.. 2,541 shares at an average of $29.84, traded Aug 26, 2025, filed Aug 27, 2025.
Score components
- +25RoleCEO
- +8Trade size$76k at market
- 0Share of holdings soldSold 2.4% of holdings
- +15Cluster4 insiders selling within 14 days
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 -3.0%, 3m -14.1%, 6m -37.9%.
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 0001660280-25-000112, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 26, 2025 | SOpen-market sale Common Stock | -2,541 | $29.84 | $76k | 105,001 | Aug 27, 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.