David L. Lewis is Chief Scientific Officer at ARROWHEAD RESEARCH CORP (ARWR). They have made 1 open-market trade across 1 company since 2014, most recently 2015-01-05.
CIK 0001595838
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 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ARWR | 15,000 | $838K |
Shares reported on the most recent Form 4, priced at the 2015-01-07 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.