Stuart D. Porter
CIK: 0001520346
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (18 total)
- Jul 10, 2026GAME
GameSquare Holdings, Inc.
Exercise(M)Direct150K shares- - Jul 10, 2026GAME
GameSquare Holdings, Inc.
Award(A)DirectRestricted Stock Units
150K shares- - May 29, 2026LIXT
LIXTE BIOTECHNOLOGY HOLDINGS, INC.
Award(A)Direct25K shares- - May 28, 2026AIRJ
AirJoule Technologies Corp.
Award(A)DirectRestricted Stock Units
30.2K shares- - May 28, 2026AIRJ
AirJoule Technologies Corp.
Exercise(M)Direct28K shares- - Jan 15, 2026AIRJ
AirJoule Technologies Corp.
Purchase(P)Direct153.8K shares at avg. $3.25$500K - Dec 10, 2025AIRJ
AirJoule Technologies Corp.
Purchase(P)Direct264.2K shares at avg. $2.95$779K - Dec 9, 2025AIRJ
AirJoule Technologies Corp.
Purchase(P)Direct46.8K shares at avg. $2.84$133K - Dec 8, 2025AIRJ
AirJoule Technologies Corp.
Purchase(P)Direct31.7K shares at avg. $2.77$88K - Dec 4, 2025GAME
GameSquare Holdings, Inc.
Award(A)DirectRestricted Stock Units
150K shares- - Dec 4, 2025GAME
GameSquare Holdings, Inc.
Exercise(M)Direct150K shares- - Jul 16, 2025CHX
ChampionX Corp
Disposition(D)Direct26.1K shares- - Jul 16, 2025CHX
ChampionX Corp
Award(A)Direct2.8K shares- - May 29, 2025AIRJ
AirJoule Technologies Corp.
Award(A)DirectRestricted Stock Units
28K shares- - May 29, 2025AIRJ
AirJoule Technologies Corp.
Exercise(M)Direct5.4K shares- - Dec 30, 2024AIRJ
AirJoule Technologies Corp.
Gift(G)Direct1.5K shares- - Dec 26, 2024AIRJ
AirJoule Technologies Corp.
Gift(G)Direct17.6K shares- - Nov 15, 2024CHX
ChampionX Corp
Award(A)Direct4.1K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jul 10, 2026 |  GAME GameSquare Holdings, Inc. | Exercise(M) | 150,000 | - | $0 | Direct |
| Jul 10, 2026 | GAME GameSquare Holdings, Inc. | Award(A) Restricted Stock Units | 150,000 | - | - | Direct |
| May 29, 2026 |  LIXT LIXTE BIOTECHNOLOGY HOLDINGS, INC. | Award(A) | 25,000 | - | $0 | Direct |
| May 28, 2026 |  AIRJ AirJoule Technologies Corp. | Award(A) Restricted Stock Units | 30,227 | - | - | Direct |
| May 28, 2026 | AIRJ AirJoule Technologies Corp. | Exercise(M) | 28,037 | - | $0 | Direct |
| Jan 15, 2026 | AIRJ AirJoule Technologies Corp. | Purchase(P) | 153,846 | $3.25 | $500,000 | Direct |
| Dec 10, 2025 | AIRJ AirJoule Technologies Corp. | Purchase(P) | 264,150 | $2.95 | $779,243 | Direct |
| Dec 9, 2025 | AIRJ AirJoule Technologies Corp. | Purchase(P) | 46,800 | $2.84 | $132,912 | Direct |
| Dec 8, 2025 | AIRJ AirJoule Technologies Corp. | Purchase(P) | 31,695 | $2.77 | $87,795 | Direct |
| Dec 4, 2025 | GAME GameSquare Holdings, Inc. | Award(A) Restricted Stock Units | 150,000 | - | - | Direct |
| Dec 4, 2025 | GAME GameSquare Holdings, Inc. | Exercise(M) | 150,000 | - | - | Direct |
| Jul 16, 2025 |  CHX ChampionX Corp | Disposition(D) | 26,066 | - | - | Direct |
| Jul 16, 2025 | CHX ChampionX Corp | Award(A) | 2,771 | - | - | Direct |
| May 29, 2025 | AIRJ AirJoule Technologies Corp. | Award(A) Restricted Stock Units | 28,037 | - | - | Direct |
| May 29, 2025 | AIRJ AirJoule Technologies Corp. | Exercise(M) | 5,400 | - | - | Direct |
| Dec 30, 2024 | AIRJ AirJoule Technologies Corp. | Gift(G) | 1,530 | - | $0 | Direct |
| Dec 26, 2024 | AIRJ AirJoule Technologies Corp. | Gift(G) | 17,600 | - | $0 | Direct |
| Nov 15, 2024 | CHX ChampionX Corp | Award(A) | 4,135 | - | $0 | Direct |
1-18 of 18 transactions
About Porter Stuart D
Porter Stuart D (SEC CIK 0001520346) files insider reports with the SEC as Director of GameSquare Holdings, Inc. (GAME), Director of AirJoule Technologies Corp. (AIRJ) and Director of LIXTE BIOTECHNOLOGY HOLDINGS, INC. (LIXT). Signal8 also holds filings tied to 1 other company.
Signal8 holds 11 ownership filings by Porter Stuart D (1 Form 3, 10 Form 4), filed between Nov 18, 2024 and Jul 14, 2026. Those filings report 18 transactions, from Nov 15, 2024 to Jul 10, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Porter Stuart D's filings is in FRISCO, TX.
Recent filings by Porter Stuart D
- Jul 10, 2026: Option exercise of GAME shares (Form 4, code M).
- Jul 10, 2026: Grant or award of GAME derivative securities (Form 4, code A).
- May 29, 2026: Grant or award of LIXT shares (Form 4, code A).
- May 28, 2026: Grant or award of AIRJ derivative securities (Form 4, code A).
- May 28, 2026: Option exercise of AIRJ shares (Form 4, code M).
Other insiders filing for GameSquare Holdings, Inc. (GAME)
- Vichairattanawong Amaree Elizabeth, Chief Operating Officer
- Munoz Michael Patrick, Chief Financial Officer
- Kenna Justin, CEO and Director
- Hamilton Paul, Director
- Gorman Jeremi, Director
- Blue & Silver Ventures, Ltd., Officer