Porter Stuart D (CIK 1520346) reported 10 SEC Form 4 insider transactions across 4 companies over the past 18 months (most recent 2026-06-01). Recent activity: Buy LIXT (25,000 shares), Buy AIRJ (28,037 shares), Buy AIRJ (153,846 shares), Buy AIRJ (46,800 shares), Buy AIRJ (31,695 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-01 | LIXTE BIOTECHNOLOGY HOLDINGS, INC. (LIXT) | Director | Buy | 25,000 | $0 |
| 2026-06-01 | AirJoule Technologies Corp. (AIRJ) | Director | Buy | 28,037 | $0 |
| 2026-01-20 | AirJoule Technologies Corp. (AIRJ) | Director | Buy | 153,846 | $500,000 |
| 2025-12-10 | AirJoule Technologies Corp. (AIRJ) | Director | Buy | 46,800 | $132,912 |
| 2025-12-10 | AirJoule Technologies Corp. (AIRJ) | Director | Buy | 31,695 | $87,795 |
| 2025-12-10 | AirJoule Technologies Corp. (AIRJ) | Director | Buy | 264,150 | $779,242 |
| 2025-12-09 | GameSquare Holdings, Inc. (GAME) | Director | Buy | 150,000 | $0 |
| 2025-07-16 | ChampionX Corp (CHX) | Director | Buy | 2,771 | $0 |
| 2025-07-16 | ChampionX Corp (CHX) | Director | Sell | 26,066 | $0 |
| 2025-06-02 | AirJoule Technologies Corp. (AIRJ) | Director | Buy | 5,400 | $0 |
Source: SEC Form 4 filings · as of 2026-06-01