Shannon Hall is President & VP at BIO RAD LABORATORIES INC (BIO). They have made 10 open-market trades across 2 companies since 2015, most recently 2026-08-15.
CIK 0001621222
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 10 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MLAB | SELL | 2022-12-08 | 2022-12-09 | $174.98 | $40K | -4.8% | +2.9% | -0.9% |
| BIO | SELL | 2017-09-13 | 2017-09-14 | $221.20 | $275K | -0.6% | -0.6% | +12.2% |
| BIO | SELL | 2017-05-31 | 2017-06-01 | $222.65 | $200K | -1.0% | +1.0% | -3.1% |
| BIO | SELL | 2016-11-07 | 2016-11-08 | $165.62 | $14K | -1.4% | +3.2% | +10.4% |
| BIO | SELL | 2016-09-13 | 2016-09-14 | $158.08 | $15K | +2.1% | +2.9% | +15.4% |
| BIO | SELL | 2016-09-12 | 2016-09-13 | $155.02 | $128K | +2.8% | +2.6% | +14.3% |
| BIO | SELL | 2016-06-13 | 2016-06-14 | $145.31 | $416K | -3.8% | +0.7% | +10.5% |
| BIO | SELL | 2015-09-14 | 2015-09-15 | $139.11 | $25K | -8.1% | -0.7% | -0.7% |
| BIO | SELL | 2015-09-11 | 2015-09-14 | $137.50 | $13K | -8.1% | -0.7% | -0.7% |
| BIO | SELL | 2015-09-09 | 2015-09-10 | $139.01 | $12K | -8.1% | -0.7% | -0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.