| 2018-08-09 | Sale | Repligen Corporation RGEN | 10 percent owner | 232,146 0.5311% | $49.63 | $11.52M | +19.23% | |
| 2018-08-08 | Sale | Repligen Corporation RGEN | 10 percent owner | 9,540 0.0219% | $49.05 | $467,941 | +21% | |
| 2018-08-07 | Sale | Repligen Corporation RGEN | 10 percent owner | 32,030 0.0732% | $49.05 | $1.57M | +20.38% | |
| 2018-08-06 | Sale | Repligen Corporation RGEN | 10 percent owner | 66,284 0.1516% | $49.05 | $3.25M | +20.52% | |
| 2018-05-16 | Sale | Repligen Corporation RGEN | 10 percent owner | 237,700 0.5434% | $42.07 | $10M | +31.99% | |
| 2018-05-09 | Sale | Repligen Corporation RGEN | 10 percent owner | 45,773 0.105% | $40.44 | $1.85M | +37.07% | |
| 2018-05-08 | Sale | Repligen Corporation RGEN | 10 percent owner | 74,227 0.1706% | $40.73 | $3.02M | +36.23% |