Stuart D Porter
CIK 1520346 · last filed 2026-07-14
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$276.63M
Companies
6
Total Filings
24
Lifetime Open-Market Net
-$218.97M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| GAME | Director | 1,416,023 | $0.36 | $507.6K | $0 | 4 | 2026-07-14 |
| AIRJW | Director | 19,560,690 | $1.09 | $21.32M | $1.50M | 7 | 2026-06-01 |
| LIXT | Director | 25,000 | $7.21 | $180.2K | $0 | 1 | 2026-06-01 |
| ChampionX Corp (CHX) Delisted | Director | 0 | $25.81 | $0 | $0 | 6 | 2025-07-16 |
| CRK | Director | 19,036,420 | $12.38 | $235.67M | -$220.47M | 5 | 2020-08-28 |
| NGL | Director | 1,262,342 | $15.01 | $18.95M | $0 | 1 | 2011-05-26 |
Recent Filings · Page 2 of 3
24 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-08-20 | GAME | Grant (A) | — | $0 | EDGAR |
| 2024-06-10 | AIRJW | Grant (A) | — | $0 | EDGAR |
| 2024-03-19 | AIRJW | Grant (A) | +19,049,892 | $2.50M | EDGAR |
| 2024-03-12 | GAME | Grant (A) | +719,424 | $1000.0K | EDGAR |
| 2023-11-16 | ChampionX Corp (CHX) Delisted | Grant (A) | +4,204 | $0 | EDGAR |
| 2022-11-16 | ChampionX Corp (CHX) Delisted | Grant (A) | +3,919 | $0 | EDGAR |
| 2021-11-17 | ChampionX Corp (CHX) Delisted | Grant (A) | +5,230 | $0 | EDGAR |
| 2020-11-18 | ChampionX Corp (CHX) Delisted | Grant (A) | +5,807 | $0 | EDGAR |
| 2020-08-28 | CRK | Mixed | −19,731,468 | -$110.24M | EDGAR |
| 2020-08-21 | CRK | Mixed | −19,776,840 | -$110.24M | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.