Gerhard F. Burbach is CEO at THORATEC CORP (THOR). They have made 3 open-market trades across 1 company since 2010, most recently 2026-06-04.
CIK 0001307313
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.
0 open-market purchases, against 3 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| THOR | 169,970 | $4.4M |
| SGHT | 123,207 | $1.2M |
| FLDM | 65,913 | $245K |
| BWXT | 1,983 | $241K |
| DRAD | 39,760 | $143K |
| LAB | 96,827 | $59K |
| Total | $6.3M |
Shares reported on the most recent Form 4, priced at the 2026-06-05 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 |
|---|---|---|---|---|---|---|---|---|
| BWXT | SELL | 2026-02-25 | 2026-02-27 | $208.61 | $414K | -4.3% | -6.4% | -2.7% |
| BWXT | SELL | 2024-03-06 | 2024-03-07 | $105.42 | $105K | -3.9% | -5.3% | -13.8% |
| BWXT | SELL | 2023-08-14 | 2023-08-15 | $74.07 | $74K | -0.5% | +1.8% | +5.2% |
| THOR | SELL · 10b5-1 | 2014-03-10 | 2014-03-11 | $36.53 | $807K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2014-02-27 | 2014-03-03 | $37.00 | $185K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2014-02-12 | 2014-02-14 | $36.01 | $180K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2014-02-10 | 2014-02-11 | $34.72 | $694K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2014-01-15 | 2014-01-17 | $38.10 | $358K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2014-01-10 | 2014-01-14 | $36.66 | $1.1M | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2013-12-10 | 2013-12-12 | $38.15 | $1.5M | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2013-11-14 | 2013-11-18 | $43.00 | $860K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2013-11-11 | 2013-11-13 | $41.40 | $4.1M | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2013-10-31 | 2013-11-04 | $42.31 | $2.3M | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2013-10-25 | 2013-10-29 | $40.02 | $600K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2013-10-16 | 2013-10-17 | $39.00 | $374K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2013-10-10 | 2013-10-15 | $38.18 | $1.5M | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2012-11-23 | 2012-11-27 | $38.09 | $442K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2012-11-02 | 2012-11-06 | $38.02 | $34K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2012-07-17 | 2012-07-19 | $36.00 | $1.4M | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2012-07-02 | 2012-07-05 | $34.01 | $246K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2012-05-03 | 2012-05-07 | $34.23 | $1.5M | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2011-10-28 | 2011-11-01 | $38.00 | $110K | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2011-05-19 | 2011-05-23 | $35.05 | $1.1M | -2.7% | -18.1% | -18.1% |
| THOR | SELL · 10b5-1 | 2010-06-03 | 2010-06-07 | $44.38 | $4.4M | -2.7% | -18.1% | -18.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.