Gary E. Dickerson is CEO at VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES INC (VSEA). They have made 29 open-market trades across 2 companies since 2006, most recently 2026-06-30.
CIK 0001183258
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.
3 open-market purchases totalling $14.3M since 2015, against 26 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMAT | 1,599,843 | $654.7M |
| VSEA | 19,624 | — |
| Total | $654.7M |
Shares reported on the most recent Form 4, priced at the 2026-07-01 close. 1 holding could not be priced and is 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 |
|---|---|---|---|---|---|---|---|---|
| AMAT | SELL | 2026-06-29 | 2026-07-01 | $709.26 | $55.6M | -9.3% | -22.6% | -22.0% |
| AMAT | SELL | 2026-06-15 | 2026-06-17 | $593.24 | $49.2M | +16.3% | -14.9% | -32.3% |
| AMAT | BUY | 2025-04-03 | 2025-04-07 | $137.30 | $13.7M | -0.7% | +12.6% | +37.8% |
| AMAT | SELL | 2024-06-18 | 2024-06-20 | $246.45 | $197.2M | +1.1% | -6.2% | -21.9% |
| AMAT | SELL | 2021-12-01 | 2021-12-03 | $152.79 | $91.7M | +5.4% | +9.7% | -10.4% |
| AMAT | SELL | 2021-06-28 | 2021-06-30 | $140.00 | $24.5M | -3.8% | -1.2% | -6.2% |
| AMAT | SELL | 2021-06-15 | 2021-06-17 | $140.28 | $28.9M | +4.9% | -4.9% | +4.4% |
| AMAT | SELL | 2021-06-04 | 2021-06-08 | $140.11 | $21.9M | -4.1% | -3.2% | -0.3% |
| AMAT | SELL | 2021-04-09 | 2021-04-09 | $140.00 | $14.7M | -2.0% | -9.5% | -3.8% |
| AMAT | SELL | 2019-11-19 | 2019-11-20 | $61.11 | $61.1M | -2.3% | +9.1% | +15.0% |
| AMAT | SELL | 2016-10-07 | 2016-10-11 | $29.71 | $13.7M | -0.8% | -1.7% | +14.4% |
| AMAT | BUY | 2015-09-24 | 2015-09-25 | $14.34 | $430K | -11.5% | +0.9% | +0.9% |
| AMAT | BUY | 2015-08-21 | 2015-08-24 | $15.68 | $157K | -11.5% | +0.9% | +0.9% |
| AMAT | SELL | 2014-02-24 | 2014-02-26 | $19.14 | $13.6M | -11.5% | +0.9% | +0.9% |
| AMAT | SELL | 2013-05-31 | 2013-06-03 | $15.31 | $4.1M | -11.5% | +0.9% | +0.9% |
| VSEA | SELL | 2011-06-16 | 2011-06-20 | $61.26 | $4.3M | N/A | N/A | N/A |
| VSEA | SELL | 2011-06-07 | 2011-06-08 | $61.45 | $11.5M | N/A | N/A | N/A |
| VSEA | SELL | 2011-02-10 | 2011-02-11 | $45.40 | $7.2M | N/A | N/A | N/A |
| VSEA | SELL | 2011-02-08 | 2011-02-10 | $45.00 | $1.9M | N/A | N/A | N/A |
| VSEA | SELL | 2011-01-18 | 2011-01-19 | $42.66 | $2.6M | N/A | N/A | N/A |
| VSEA | SELL | 2010-12-09 | 2010-12-13 | $35.50 | $888K | N/A | N/A | N/A |
| VSEA | SELL | 2010-12-01 | 2010-12-03 | $32.88 | $2.5M | N/A | N/A | N/A |
| VSEA | SELL | 2007-09-12 | 2007-09-13 | $55.01 | $2.5M | N/A | N/A | N/A |
| VSEA | SELL · 10b5-1 | 2007-09-11 | 2007-09-12 | $55.00 | $232K | N/A | N/A | N/A |
| VSEA | SELL | 2007-09-05 | 2007-09-06 | $57.57 | $23K | 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.