| 2014-11-13 | Sale | Bio-Rad Laboratories, Inc. BIO | 10 percent owner | 530 0.0018% | $111.93 | $59,323 | +23.19% | |
| 2011-03-03 | Sale | Bio-Rad Laboratories, Inc. BIO | 10 percent owner | 215.99 0.0008% | $116.62 | $25,189 | -12.55% | |
| 2006-11-09 | Sale | Bio-Rad Laboratories, Inc. BIO | 10 percent owner | 120 0.0005% | $77.86 | $9,343 | +4.78% | |
| 2006-01-09 | Sale | Bio-Rad Laboratories, Inc. BIO | 10 percent owner | 381 0.0014% | $66.45 | $25,317 | -0.16% |