Insider · CIK 0001309349
Samuel M Zentman
Files at ACFN (ACORN ENERGY, INC.), GRML (Greenland Mines Ltd). First filing -, latest -.
Samuel M Zentman files SEC Form 4 as director at ACFN (ACORN ENERGY, INC.), and also at GRML (Greenland Mines Ltd). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; Samuel M Zentman has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 10 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Mar 4, 2026 | GRML Greenland Mines Ltd | AGrant or award Common Stock | +350,000 | - | - | 1,086,440 | Mar 6, 2026 |
| Feb 5, 2026 | ACFN ACORN ENERGY, INC. | MOption exercise common stock | +625 | $4.96 | $3,100 | 7,242 | Feb 9, 2026 |
| Feb 5, 2026 | ACFN ACORN ENERGY, INC. | MOption exercise stock optionsderivative | -625 | $0.00 | $0 | 0 | Feb 9, 2026 |
| Jan 19, 2026 | ACFN ACORN ENERGY, INC. | AGrant or award stock optionsderivative | +3,125 | $0.00 | $0 | 3,125 | Jan 21, 2026 |
| Dec 10, 2025 | GRML Greenland Mines Ltd | AGrant or award Non-Qualified Stock Optionderivative | +20,000 | $0.41 | $8,200 | 60,000 | Dec 10, 2025 |
| Aug 5, 2025 | GRML Greenland Mines Ltd | AGrant or award Common Stock | +153,494 | - | - | 736,440 | Aug 8, 2025 |
| Aug 7, 2025 | GRML Greenland Mines Ltd | AGrant or award Non-Qualified Stock Optionderivative | +10,000 | $0.41 | $4,100 | 40,000 | Aug 8, 2025 |
| Jan 1, 2025 | ACFN ACORN ENERGY, INC. | AGrant or award stock optionsderivative | +625 | $0.00 | $0 | 625 | Jan 3, 2025 |
| Nov 22, 2024 | ACFN ACORN ENERGY, INC. | MOption exercise common stock | +625 | $3.68 | $2,300 | 6,617 | Nov 25, 2024 |
| Nov 22, 2024 | ACFN ACORN ENERGY, INC. | MOption exercise stock optionsderivative | -625 | $0.00 | $0 | 0 | Nov 25, 2024 |
Questions about Samuel M Zentman
Answered from the filings on this page, as of the latest one.
Is Samuel M Zentman buying or selling?
Samuel M Zentman has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Samuel M Zentman's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Samuel M Zentman has 0.
Where does Samuel M Zentman file Form 4?
Samuel M Zentman has filed Form 4 at ACFN (ACORN ENERGY, INC.); GRML (Greenland Mines Ltd). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.