David M. Wurzer is Director at DUSA PHARMACEUTICALS INC (DUSA). They have made 4 open-market trades across 4 companies since 2007, most recently 2020-07-16.
CIK 0001207118
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.
3 open-market purchases totalling $35K since 2010, 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.