Stuart D. Porter is Director & 10% Owner at Montana Technologies Corp. (AIRJ). They have made 3 open-market trades across 2 companies since 2020, most recently 2026-07-10.
CIK 0001520346
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.
2 open-market purchases totalling $2.4M since 2025, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CRK | 19,013,186 | $265.8M |
| GAME | 1,199,357 | $3.1M |
| AIRJ | 804,916 | $2.5M |
| CHX | 26,066 | $673K |
| LIXT | 25,000 | $181K |
| Total | $272.3M |
Shares reported on the most recent Form 4, priced at the 2026-07-14 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.