David S. Buzby is Director at VALUECLICK INC/CA (VCLK). They have made 17 open-market trades across 3 companies since 2006, most recently 2026-08-07.
CIK 0001244203
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.
11 open-market purchases totalling $1.3M since 2006, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| STEM | BUY | 2024-03-18 | 2024-03-20 | $1.81 | $61K | -3.0% | -22.5% | -43.5% |
| STEM | BUY | 2024-03-15 | 2024-03-18 | $1.84 | $115K | +21.7% | -12.2% | -35.0% |
| STEM | BUY | 2023-09-15 | 2023-09-18 | $4.82 | $299K | -10.8% | -19.3% | -16.3% |
| STEM | SELL | 2022-09-09 | 2022-09-12 | $16.21 | $811K | -2.6% | -18.6% | -30.0% |
| STEM | SELL | 2022-08-17 | 2022-08-19 | $15.51 | $1.0M | +13.2% | +20.5% | -1.9% |
| STEM | SELL | 2022-03-08 | 2022-03-09 | $9.01 | $1.6M | +21.7% | +16.1% | +6.2% |
| CNVR | SELL | 2014-12-05 | 2014-12-09 | $34.63 | $866K | N/A | N/A | N/A |
| VCLK | BUY | 2012-12-13 | 2012-12-17 | $19.34 | $87K | N/A | N/A | N/A |
| VCLK | BUY | 2011-06-15 | 2011-06-17 | $16.49 | $25K | N/A | N/A | N/A |
| VCLK | BUY | 2010-09-15 | 2010-09-17 | $12.15 | $282K | N/A | N/A | N/A |
| VCLK | BUY | 2010-05-04 | 2010-05-06 | $10.08 | $454 | N/A | N/A | N/A |
| VCLK | BUY | 2009-11-04 | 2009-11-05 | $9.85 | $49K | N/A | N/A | N/A |
| VCLK | BUY | 2009-11-02 | 2009-11-03 | $9.44 | $47K | N/A | N/A | N/A |
| VCLK | BUY | 2009-10-30 | 2009-11-03 | $9.82 | $49K | N/A | N/A | N/A |
| VCLK | SELL | 2007-03-08 | 2007-03-09 | $26.66 | $161K | N/A | N/A | N/A |
| VCLK | SELL | 2006-12-15 | 2006-12-19 | $24.39 | $4.9M | N/A | N/A | N/A |
| VCLK | BUY | 2006-06-15 | 2006-09-15 | $14.35 | $264K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.