William Tu is VP & Controller at Glass House Brands Inc. (GLASF). They have made 3 open-market trades across 2 companies since 2026, most recently 2026-09-16.
CIK 0002120766
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 3 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GLAS | 28,951 | $75K |
| GLASF | 3,818 | — |
| Total | $75K |
Shares reported on the most recent Form 4, priced at the 2026-09-18 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.