David Bass is CTO & VP at VARONIS SYSTEMS INC (VRNS). They have made 14 open-market trades across 1 company since 2018, most recently 2026-02-09.
CIK 0001733035
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 $70K since 2026, against 13 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| VRNS | 1,039,944 | $50.7M |
Shares reported on the most recent Form 4, priced at the 2026-02-10 close.
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 |
|---|---|---|---|---|---|---|---|---|
| VRNS | BUY | 2026-02-09 | 2026-02-10 | $23.47 | $70K | -24.2% | -13.0% | +0.7% |
| VRNS | SELL | 2024-02-08 | 2024-02-12 | $50.45 | $13.1M | +1.1% | +3.2% | -9.0% |
| VRNS | SELL | 2023-11-02 | 2023-11-03 | $33.00 | $5.0M | +11.1% | +28.4% | +33.7% |
| VRNS | SELL | 2023-08-22 | 2023-08-22 | $29.51 | $1.0M | +8.6% | +2.4% | +32.1% |
| VRNS | SELL | 2021-03-01 | 2021-03-03 | $187.40 | $22.0M | +3.8% | -5.2% | -14.9% |
| VRNS | SELL | 2021-01-07 | 2021-01-08 | $170.37 | $937K | +5.1% | +6.7% | -6.5% |
| VRNS | SELL | 2020-09-01 | 2020-09-02 | $124.84 | $375K | -7.5% | -3.9% | -1.2% |
| VRNS | SELL | 2020-07-06 | 2020-07-06 | $99.08 | $4.7M | +3.7% | +19.4% | +19.9% |
| VRNS | SELL | 2019-12-03 | 2019-12-05 | $76.25 | $419K | -0.7% | +3.2% | +5.3% |
| VRNS | SELL | 2019-11-15 | 2019-11-19 | $75.19 | $226K | +2.6% | +2.2% | +22.2% |
| VRNS | SELL | 2019-05-16 | 2019-05-17 | $72.54 | $6.2M | -8.0% | -11.8% | -1.9% |
| VRNS | SELL | 2019-05-16 | 2019-05-17 | $72.54 | $3.1M | -8.0% | -11.8% | -1.9% |
| VRNS | SELL | 2018-05-29 | 2018-05-30 | $75.72 | $290K | +1.9% | -3.5% | -7.8% |
| VRNS | SELL | 2018-03-13 | 2018-03-14 | $57.43 | $1.0M | +5.8% | +11.9% | +41.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.