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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
CRK price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
7TH FLOOR
BOSTON, MA 02116
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| GAME | Director | 177,003 | $2.24 | $396.5K | $0 | 4 | 2026-07-14 |
| AIRJW | Director | 19,560,690 | $0.69 | $13.50M | $1.50M | 7 | 2026-06-01 |
| LIXTE BIOTECHNOLOGY HOLDINGS, INC. (LIXT) Delisted | 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 | $14.43 | $274.70M | -$220.47M | 5 | 2020-08-28 |
| NGL | Director | 1,262,342 | $15.99 | $20.18M | $0 | 1 | 2011-05-26 |
Recent Filings · Page 2 of 3
24 filings| 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 |
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.