Peter Wirth is Chairman at ROFIN SINAR TECHNOLOGIES INC (RSTI). They have made 36 open-market trades across 4 companies since 2006, most recently 2026-06-17.
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.
18 open-market purchases totalling $5.5M since 2006, against 18 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ZLAB | SELL | 2022-12-08 | 2022-12-09 | $35.36 | $414K | -9.6% | +22.4% | -0.3% |
| ZLAB | BUY | 2021-12-08 | 2021-12-08 | $71.36 | $285K | -6.0% | -24.1% | -49.4% |
| RSTI | SELL | 2015-11-19 | 2015-11-19 | $28.04 | $2.2M | N/A | N/A | N/A |
| RSTI | BUY | 2013-02-11 | 2013-02-12 | $17.11 | $342K | N/A | N/A | N/A |
| RSTI | SELL | 2013-02-11 | 2013-02-12 | $27.81 | $556K | N/A | N/A | N/A |
| RSTI | BUY | 2012-08-15 | 2012-08-16 | $19.62 | $128K | N/A | N/A | N/A |
| GENZ | SELL | 2010-05-25 | 2010-05-26 | $45.62 | $304K | N/A | N/A | N/A |
| GENZ | SELL · 10b5-1 | 2010-05-17 | 2010-05-19 | $50.51 | $2.4M | N/A | N/A | N/A |
| RSTI | BUY | 2009-12-02 | 2009-12-02 | $17.11 | $351K | N/A | N/A | N/A |
| RSTI | SELL | 2009-12-02 | 2009-12-02 | $23.24 | $476K | N/A | N/A | N/A |
| RSTI | SELL | 2009-12-01 | 2009-12-01 | $23.28 | $233K | N/A | N/A | N/A |
| RSTI | BUY | 2009-12-01 | 2009-12-01 | $17.11 | $171K | N/A | N/A | N/A |
| RSTI | BUY | 2009-11-25 | 2009-11-25 | $17.11 | $248K | N/A | N/A | N/A |
| RSTI | SELL | 2009-11-25 | 2009-11-25 | $23.24 | $337K | N/A | N/A | N/A |
| RSTI | SELL | 2009-11-24 | 2009-11-24 | $23.15 | $694K | N/A | N/A | N/A |
| RSTI | BUY | 2009-11-24 | 2009-11-24 | $17.11 | $513K | N/A | N/A | N/A |
| RSTI | BUY | 2009-11-23 | 2009-11-24 | $16.50 | $454K | N/A | N/A | N/A |
| RSTI | SELL | 2009-11-23 | 2009-11-24 | $23.22 | $639K | N/A | N/A | N/A |
| RSTI | BUY | 2009-11-18 | 2009-11-18 | $16.36 | $41K | N/A | N/A | N/A |
| RSTI | SELL | 2009-11-18 | 2009-11-18 | $23.78 | $59K | N/A | N/A | N/A |
| RSTI | BUY | 2009-11-16 | 2009-11-17 | $16.36 | $568K | N/A | N/A | N/A |
| RSTI | SELL | 2009-11-16 | 2009-11-17 | $23.68 | $822K | N/A | N/A | N/A |
| RSTI | BUY | 2009-11-13 | 2009-11-13 | $12.67 | $473K | N/A | N/A | N/A |
| RSTI | SELL | 2009-11-13 | 2009-11-13 | $23.11 | $862K | N/A | N/A | N/A |
| GENZ | SELL · 10b5-1 | 2009-01-16 | 2009-01-20 | $66.50 | $15.4M | 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.