SEC Form 4
PMA Graphene Technology Group Inc. (PMA) insider trading
In the 12 months to Oct 26, 2026, one PMA insider reported open-market sales of $1.3M across 5 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $1.3M
- 5 filings · 1 insider
- Open-market purchases
- $0
- 0 filings
Who traded PMA, and when
- Sale
PMA daily close from Jul 9, 2026 to Oct 26, 2026, between $1.16 and $1.73, last $1.27. 5 sale and 0 purchase filings by 1 insider, marked at their filing dates. Chi Ming Lam, Director: sold $1.3M across 5 filings, first filed Sep 11, 2026, last Sep 25, 2026.
Largest mark · tap a row for others
Chi Ming Lam · Director
Filing 1 of 3 within a week · $885,990 total
Sale $413,241
320,000 shares
Filed Sep 11, 2026 · traded Aug 13
Close on filing date $1.30
Chi Ming Lam · Director
Director
$1.3M soldOpen-market trades
5 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Chi Ming Lam | Director | $1.3M | — | 5 | — |
| Filed | Insider | Type | Shares | Value | Held after | Source |
|---|---|---|---|---|---|---|
traded | Chi Ming Lam Director | Sale | 167,865 ordinary shares | $218.4K | 1,431,886 | |
traded | Chi Ming Lam Director | Sale | 126,000 ordinary shares | $163.8K | 192,751 | |
traded | Chi Ming Lam Director | Sale | 99,114 ordinary shares | $128.9K | 318,751 | |
traded | Chi Ming Lam Director | Sale | 320,000 ordinary shares | $413.2K | 687,865 | |
traded | Chi Ming Lam Director | Sale | 270,000 ordinary shares | $343.9K | 417,865 |
Shares are as filed (ordinary shares or ADS); values are as converted to US$ in the filing.
GET /stocks/filings/vX/form-4?tickers=PMA&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"PMA"
],
"issuer_cik": "0001956166",
"owner_cik": "0002028403",
"accession_number": "0002028403-26-000019",
"form_type": "4",
"filing_date": "2026-09-25",
"period_of_report": "2026-09-24",
"issuer_name": "PMA Graphene Technology Group Inc.",
"issuer_trading_symbol": "PMA",
"owner_name": "Lam Chi Ming",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Ordinary Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-24",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 120000,
"transaction_price_per_share": 1.3005,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 1479751,
"transaction_value": 156060,
"not_subject_to_section_16": false,
"direct_or_indirect": "I",
"nature_of_ownership": "Held in individual account with broker"
},
{
"tickers": [
"PMA"
],
"issuer_cik": "0001956166",
"owner_cik": "0002028403",
"accession_number": "0002028403-26-000019",
"form_type": "4",
"filing_date": "2026-09-25",
"period_of_report": "2026-09-24",
"issuer_name": "PMA Graphene Technology Group Inc.",
"issuer_trading_symbol": "PMA",
"owner_name": "Lam Chi Ming",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Ordinary Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-25",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 47865,
"transaction_price_per_share": 1.3023,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 1431886,
"transaction_value": 62334.5895,
"not_subject_to_section_16": false,
"direct_or_indirect": "I",
"nature_of_ownership": "Held in individual account with broker"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 3 records
- Other3 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
- Counted once
- When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.
Frequently asked questions
How current is PMA’s insider data?
These are PMA Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track PMA insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for PMA every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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