John C. Huffard Jr. is Director at Tenable Holdings, Inc. (TENB). They have made 31 open-market trades across 2 companies since 2019, most recently 2026-05-13.
CIK 0001747299
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $1.5M since 2024, against 30 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| NSC | BUY | 2024-05-30 | 2024-05-31 | $219.92 | $1.5M | -0.9% | -5.4% | +11.4% |
| TENB | SELL | 2019-12-02 | 2019-12-04 | $26.54 | $815K | -2.4% | -1.6% | -3.6% |
| TENB | SELL | 2019-11-04 | 2019-11-05 | $25.35 | $266K | +8.5% | +2.1% | +14.0% |
| TENB | SELL | 2019-11-01 | 2019-11-05 | $25.16 | $922K | +8.5% | +2.1% | +14.0% |
| TENB | SELL | 2019-11-01 | 2019-11-05 | $25.07 | $614K | +8.5% | +2.1% | +14.0% |
| TENB | SELL | 2019-10-31 | 2019-11-01 | $25.28 | $629K | +6.4% | +7.1% | +10.7% |
| TENB | SELL | 2019-10-30 | 2019-11-01 | $26.45 | $656K | +6.4% | +7.1% | +10.7% |
| TENB | SELL | 2019-10-30 | 2019-11-01 | $25.87 | $1.3M | +6.4% | +7.1% | +10.7% |
| TENB | SELL | 2019-09-18 | 2019-09-20 | $24.98 | $1.2M | -9.1% | -10.0% | -1.0% |
| TENB | SELL | 2019-08-02 | 2019-08-05 | $24.96 | $175K | -6.1% | +3.1% | +11.7% |
| TENB | SELL | 2019-08-01 | 2019-08-05 | $24.95 | $267K | -6.1% | +3.1% | +11.7% |
| TENB | SELL | 2019-08-01 | 2019-08-05 | $24.93 | $56K | -6.1% | +3.1% | +11.7% |
| TENB | SELL | 2019-07-26 | 2019-07-30 | $31.73 | $990K | -15.4% | -18.4% | -14.4% |
| TENB | SELL | 2019-07-03 | 2019-07-08 | $28.79 | $167K | +5.1% | -22.5% | -22.2% |
| TENB | SELL | 2019-07-02 | 2019-07-03 | $28.52 | $64K | +5.8% | -14.7% | -22.5% |
| TENB | SELL | 2019-07-01 | 2019-07-03 | $28.52 | $713K | +5.8% | -14.7% | -22.5% |
| TENB | SELL | 2019-07-01 | 2019-07-03 | $28.52 | $787K | +5.8% | -14.7% | -22.5% |
| TENB | SELL | 2019-06-04 | 2019-06-05 | $25.77 | $109K | +0.7% | +10.4% | -13.9% |
| TENB | SELL | 2019-06-03 | 2019-06-05 | $26.65 | $818K | +0.7% | +10.4% | -13.9% |
| TENB | SELL | 2019-06-03 | 2019-06-05 | $26.82 | $614K | +0.7% | +10.4% | -13.9% |
| TENB | SELL | 2019-05-02 | 2019-05-03 | $31.54 | $1.3M | -2.3% | -12.3% | -16.1% |
| TENB | SELL | 2019-05-01 | 2019-05-02 | $32.71 | $762K | -8.1% | -16.7% | -19.2% |
| TENB | SELL | 2019-05-01 | 2019-05-02 | $32.71 | $818K | -8.1% | -16.7% | -19.2% |
| TENB | SELL | 2019-04-02 | 2019-04-03 | $31.97 | $673K | -0.1% | -6.0% | -10.6% |
| TENB | SELL | 2019-04-01 | 2019-04-03 | $31.46 | $787K | -0.1% | -6.0% | -10.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.