Stephen A. Riddick is CLO & Secretary at Tenable Holdings, Inc. (TENB). They have made 46 open-market trades across 3 companies since 2019, most recently 2026-07-29.
CIK 0001747310
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.
4 open-market purchases totalling $256K since 2024, against 42 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TENB | 42,199 | $1.6M |
| BWMN | 22,538 | $964K |
| BMTX | 10,912 | $55K |
| [NONE] | 9,568 | — |
| PrivateUnlisted | 6,145 | — |
| Total | $2.6M |
Shares reported on the most recent Form 4, priced at the 2026-07-30 close. 2 holdings could not be priced and are excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| [NONE] | BUY | 2026-07-29 | 2026-07-30 | $19.13 | $31K | N/A | N/A | — |
| BWMN | SELL · 10b5-1 | 2025-09-08 | 2025-09-09 | $41.04 | $123K | +6.0% | +5.5% | -19.0% |
| BWMN | SELL · 10b5-1 | 2025-06-06 | 2025-06-10 | $28.60 | $6K | +1.7% | +13.1% | +50.5% |
| [NONE] | BUY | 2025-04-23 | 2025-06-24 | $19.59 | $14K | N/A | N/A | N/A |
| PrivateVISTA CREDIT STRATEGIC LENDING CORP. | BUY | 2024-12-26 | 2024-12-30 | $19.79 | $28K | N/A | N/A | N/A |
| BWMN | SELL · 10b5-1 | 2024-12-11 | 2024-12-13 | $28.62 | $234K | -9.3% | -12.1% | -14.7% |
| BWMN | SELL · 10b5-1 | 2024-12-06 | 2024-12-06 | $28.60 | $131K | -13.3% | -10.6% | -31.7% |
| PrivateVISTA CREDIT STRATEGIC LENDING CORP. | BUY | 2024-09-27 | 2024-10-01 | $19.65 | $182K | N/A | N/A | N/A |
| TENB | SELL | 2022-08-24 | 2022-08-25 | $41.72 | $133K | -8.4% | -17.2% | -8.3% |
| TENB | SELL | 2022-08-19 | 2022-08-23 | $41.35 | $579K | -10.3% | -14.9% | -9.0% |
| TENB | SELL | 2022-05-24 | 2022-05-26 | $48.48 | $153K | +2.1% | -0.9% | -17.1% |
| TENB | SELL | 2022-05-19 | 2022-05-23 | $46.73 | $653K | +7.7% | -3.1% | -15.8% |
| TENB | SELL | 2022-05-18 | 2022-05-19 | $43.85 | $135K | +7.4% | -0.9% | -9.7% |
| TENB | SELL | 2022-05-02 | 2022-05-04 | $55.89 | $812K | -17.3% | -6.7% | -30.4% |
| TENB | SELL | 2022-04-01 | 2022-04-05 | $57.60 | $418K | +2.6% | -9.5% | -15.8% |
| TENB | SELL | 2022-03-01 | 2022-03-02 | $55.50 | $403K | -16.1% | +2.1% | -12.6% |
| TENB | SELL | 2022-02-23 | 2022-02-24 | $45.92 | $308K | +6.4% | +11.7% | -3.5% |
| TENB | SELL | 2022-02-18 | 2022-02-22 | $45.76 | $570K | +17.9% | +24.5% | +4.3% |
| TENB | SELL | 2022-02-02 | 2022-02-04 | $52.89 | $768K | -1.1% | +7.5% | +2.1% |
| TENB | SELL | 2022-01-03 | 2022-01-05 | $53.69 | $2.3M | +2.6% | +5.4% | +20.4% |
| TENB | SELL | 2021-11-22 | 2021-11-23 | $53.09 | $361K | -6.3% | +9.9% | -8.5% |
| TENB | SELL | 2021-10-01 | 2021-10-05 | $46.37 | $673K | +9.4% | +18.1% | +15.5% |
| TENB | SELL | 2021-09-01 | 2021-09-02 | $44.34 | $644K | +3.6% | -1.0% | +1.9% |
| TENB | SELL | 2021-08-23 | 2021-08-24 | $40.86 | $116K | +7.8% | +7.2% | +23.1% |
| TENB | SELL | 2021-08-20 | 2021-08-23 | $40.39 | $153K | +9.0% | +8.4% | +26.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.