Porter Stuart D — SEC Form 4 filings
SEC reporting owner CIK 1520346. 15 Form 4 filings on record with FilingPulse; latest filed 2026-07-14.
Transaction summary — filings shown
Covers all 15 filings on record, filed 2024-03-12 to 2026-07-14. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 4 legs across 2 filings — 496,491 shares, $1,499,949 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 26.
- Largest priced transaction: purchase of 264,150 shares @ $2.95 ($779,242) in AirJoule Technologies Corp., filed 2025-12-10.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| AirJoule Technologies Corp. (AIRJ) | Director, 10% owner | 7 | 4 legs · 496,491 sh · $1,499,949 | — | 12 |
| GameSquare Holdings, Inc. (GAME) | Director | 4 | — | — | 9 |
| ChampionX Corp (CHX) | Director | 2 | — | — | 3 |
| KLX Energy Services Holdings, Inc. (KLXE) | 10% owner | 1 | — | — | 1 |
| LIXTE BIOTECHNOLOGY HOLDINGS, INC. (LIXT) | Director | 1 | — | — | 1 |
Form 4 filings — Porter Stuart D
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-07-14 | 4 | GameSquare Holdings, Inc. (GAME) | Option exercise (M): 150,000 · Grant/award (A): 150,000 (derivative) @ $0 · Option exercise (M): 150,000 (derivative) @ $0 | EDGAR |
| 2026-06-01 | 4 | LIXTE BIOTECHNOLOGY HOLDINGS, INC. (LIXT) | Grant/award (A): 25,000 @ $0 | EDGAR |
| 2026-06-01 | 4 | AirJoule Technologies Corp. (AIRJ) | Option exercise (M): 28,037 @ $0 · Option exercise (M): 28,037 (derivative) @ $0 · Grant/award (A): 30,227 (derivative) @ $0 | EDGAR |
| 2026-01-20 | 4 | AirJoule Technologies Corp. (AIRJ) | Purchase (P): 153,846 @ $3.25 | EDGAR |
| 2025-12-10 | 4 | AirJoule Technologies Corp. (AIRJ) | Purchase (P): 31,695 @ $2.77 · Purchase (P): 46,800 @ $2.84 · Purchase (P): 264,150 @ $2.95 | EDGAR |
| 2025-12-09 | 4 | GameSquare Holdings, Inc. (GAME) | Option exercise (M): 150,000 · Grant/award (A): 150,000 (derivative) @ $0 · Option exercise (M): 150,000 (derivative) @ $0 | EDGAR |
| 2025-07-16 | 4 | ChampionX Corp (CHX) | Grant/award (A): 2,771 @ $0 · Disposition to issuer (D): 26,066 | EDGAR |
| 2025-06-02 | 4 | AirJoule Technologies Corp. (AIRJ) | Option exercise (M): 5,400 @ $0 · Option exercise (M): 5,400 (derivative) @ $0 · Grant/award (A): 28,037 (derivative) @ $0 | EDGAR |
| 2025-01-06 | 4 | AirJoule Technologies Corp. (AIRJ) | Gift (G): 17,600 @ $0 · Gift (G): 1,530 @ $0 | EDGAR |
| 2024-11-18 | 4 | ChampionX Corp (CHX) | Grant/award (A): 4,135 @ $0 | EDGAR |
| 2024-08-20 | 4 | GameSquare Holdings, Inc. (GAME) | Grant/award (A): 129,246 (derivative) @ $0 | EDGAR |
| 2024-06-10 | 4 | Montana Technologies Corp. (AIRJ) | Grant/award (A): 5,400 (derivative) @ $0 · Grant/award (A): 14,220 (derivative) @ $0 | EDGAR |
| 2024-03-19 | 4 | Montana Technologies Corp. (AIRJ) | Grant/award (A): 294,118 @ $8.50 · Grant/award (A): 18,755,774 | EDGAR |
| 2024-03-13 | 4 | KLX Energy Services Holdings, Inc. (KLXE) jointly with Denham Capital Management GP LLC, Denham Capital Management LP, Denham IV Continuation GP LLC, Denham IV Continuation Fund GP LP, Denham IV Continuation Fund LP, Greene's Investment Holdings LLC | Other (J): 170,421 | EDGAR |
| 2024-03-12 | 4 | GameSquare Holdings, Inc. (GAME) | Grant/award (A): 719,424 @ $1.39 · Grant/award (A): 107,914 (derivative) @ $1.39 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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