Samuel J. Anderson is Director at VICOR CORP (VICR). They have made 15 open-market trades across 2 companies since 2006, most recently 2026-08-20.
CIK 0001195966
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 $54K since 2010, against 14 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| VICR | 7,443 | $1.2M |
| AATI | 470 | — |
| Total | $1.2M |
Shares reported on the most recent Form 4, priced at the 2026-08-24 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 |
|---|---|---|---|---|---|---|---|---|
| VICR | SELL | 2026-08-17 | 2026-08-18 | $252.60 | $524K | -22.6% | -10.8% | — |
| VICR | SELL | 2026-02-23 | 2026-02-24 | $171.44 | $650K | -15.3% | -17.8% | +73.2% |
| VICR | SELL | 2021-08-10 | 2021-08-12 | $120.00 | $678K | +4.0% | +6.1% | +30.5% |
| VICR | SELL | 2019-12-19 | 2019-12-23 | $45.00 | $235K | +5.5% | +18.0% | -27.6% |
| VICR | SELL | 2019-11-13 | 2019-11-15 | $40.00 | $200K | +7.0% | +12.6% | +42.8% |
| VICR | SELL | 2019-04-24 | 2019-04-25 | $36.06 | $180K | -1.6% | -16.4% | -6.1% |
| VICR | SELL | 2019-03-14 | 2019-03-21 | $30.95 | $563K | -6.6% | -3.4% | -8.7% |
| VICR | SELL | 2016-11-14 | 2016-11-14 | $14.24 | $206K | +8.3% | +11.6% | +3.6% |
| VICR | SELL | 2015-08-14 | 2015-08-17 | $11.21 | $110K | -15.1% | +1.6% | +1.6% |
| VICR | SELL | 2013-11-04 | 2013-11-05 | $8.76 | $76K | -15.1% | +1.6% | +1.6% |
| VICR | SELL | 2010-07-30 | 2010-08-02 | $15.64 | $143K | -15.1% | +1.6% | +1.6% |
| AATI | BUY | 2010-05-07 | 2010-05-12 | $3.59 | $54K | N/A | N/A | N/A |
| VICR | SELL | 2006-06-01 | 2006-06-02 | $17.90 | $117K | -15.1% | +1.6% | +1.6% |
| AATI | SELL | 2006-05-09 | 2006-05-11 | $11.26 | $619K | N/A | N/A | N/A |
| VICR | SELL | 2006-03-01 | 2006-03-03 | $19.98 | $105K | -15.1% | +1.6% | +1.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.