Form4.ai tracks every SEC insider trade in real time. See every PMA insider filing with a free account — no card.
See every PMA insider filing — free account, no card.
Free accountPMA Graphene Technology Group Inc. (PMA) has 5 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 5 sales totalling $1.3M. Most recent filing: Sept. 25, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Sep 25, 2026 SEC filing | Lam Chi Ming Director | Sold | $218,395 | — |
| Sep 23, 2026 SEC filing | Lam Chi Ming Director | Sold | $163,829 | — |
| Sep 15, 2026 SEC filing | Lam Chi Ming Director | Sold | $128,868 | — |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.