Michael J. Mattina is VP at WESTLAKE CHEMICAL CORP (WLK). They have made 2 open-market trades across 1 company since 2016, most recently 2017-02-15.
CIK 0001262823
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 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| WLK | 6,723 | $425K |
Shares reported on the most recent Form 4, priced at the 2017-02-16 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.