Robert Thomas is 10% at ASPEN AEROGELS INC (ASPN). They have made 3 open-market trades across 3 companies since 2012, most recently 2018-08-15.
2 open-market purchases totalling $27.2M since 2012, against 1 sale. Too few scored purchases to measure a record yet.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.