Lam Chi Ming
SEC Form 4 insider trading activity
Lam Chi Ming has filed 7 SEC Form 4 filings (20 transaction rows) across 2 companies, including PMA, MSW, with disclosures dating back to 2026. 7 of those filings fall inside the rolling window. Most recent filing: Sep 25, 2026.
On the most recent filing, Lam Chi Ming is listed as Director at PMA Graphene Technology Group Inc. Inside the rolling window, Lam Chi Ming reported no open-market purchases and 12 open-market sales totaling $1.3M in PMA. The largest disclosed transaction in the window is a sale of 150,000 PMA shares on Sep 9, 2026, worth $188K.
Companies traded
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$1.3M
reported sales (SEC code S)
Companies
2
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| PMA | Director | Sale | 120,000 | $156K | Sep 25 | SEC ↗ | |
| PMA | Director | Sale | 47,865 | $62K | Sep 25 | SEC ↗ | |
| PMA | Director | Sale | 120,000 | $156K | Sep 23 | SEC ↗ | |
| PMA | Director | Sale | 6,000 | $8K | Sep 23 | SEC ↗ | |
| PMA | Director | Sale | 99,114 | $129K | Sep 15 | SEC ↗ | |
| PMA | Director, 10% Owner | Sale | 100,000 | $110K | Sep 11 | SEC ↗ | |
| PMA | Director, 10% Owner | Sale | 100,000 | $137K | Sep 11 | SEC ↗ | |
| PMA | Director, 10% Owner | Sale | 15,000 | $26K | Sep 11 | SEC ↗ | |
| PMA | Director, 10% Owner | Sale | 5,000 | $8K | Sep 11 | SEC ↗ | |
| PMA | Director, 10% Owner | Sale | 100,000 | $132K | Sep 11 | SEC ↗ | |
| PMA | Director | Sale | 150,000 | $188K | Sep 11 | SEC ↗ | |
| PMA | Director | Sale | 120,000 | $156K | Sep 11 | SEC ↗ |
Frequently asked questions
How many SEC Form 4 filings has Lam Chi Ming made?
Lam Chi Ming has filed 7 SEC Form 4 filings (20 transaction rows) across 2 companies, including PMA, MSW since 2026.
Which companies does Lam Chi Ming trade?
Lam Chi Ming has filed SEC Form 4 disclosures for 2 companies, including PMA, MSW.
When was Lam Chi Ming's most recent SEC Form 4 filing?
Lam Chi Ming's most recent SEC Form 4 filing on Tracefour is dated Sep 25, 2026.
What is Lam Chi Ming's total buy and sell value in the current window?
Inside the rolling retention window, Lam Chi Ming bought $0 and sold $1.3M based on SEC Form 4 filings.
What was Lam Chi Ming's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 150,000 PMA shares on 2026-09-09, worth $188K, per SEC Form 4 filings.