Insider · CIK 0001296853
Jeffrey S Mathiesen
Files at NMTC (NEUROONE MEDICAL TECHNOLOGIES Corp), HSDT (HELIUS MEDICAL TECHNOLOGIES, INC.). First filing -, latest -.
In brief
Jeffrey S Mathiesen files SEC Form 4 as CFO and director at NMTC (NEUROONE MEDICAL TECHNOLOGIES Corp), and also at HSDT (HELIUS MEDICAL TECHNOLOGIES, INC.). 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; Jeffrey S Mathiesen has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 5 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Apr 3, 2026 | NMTC NEUROONE MEDICAL TECHNOLOGIES Corp | AGrant or award Common Stock | +41,929 | $0.00 | $0 | 156,343 | Apr 7, 2026 |
| Apr 3, 2026 | NMTC NEUROONE MEDICAL TECHNOLOGIES Corp | AGrant or award Option to Purchase Common Stockderivative | +26,036 | $0.00 | $0 | 26,036 | Apr 7, 2026 |
| Jul 2, 2025 | HSDT HELIUS MEDICAL TECHNOLOGIES, INC. | AGrant or award Stock Option (Right to Buy)derivative | +26,200 | $0.00 | $0 | 26,200 | Jul 3, 2025 |
| Jun 23, 2025 | NMTC NEUROONE MEDICAL TECHNOLOGIES Corp | AGrant or award Option to Purchase Common Stockderivative | +50,000 | $0.00 | $0 | 50,000 | Jun 25, 2025 |
| Jan 6, 2025 | HSDT HELIUS MEDICAL TECHNOLOGIES, INC. | AGrant or award Stock Option (Right to Buy)derivative | +139,857 | $0.00 | $0 | 139,857 | Jan 8, 2025 |
Questions about Jeffrey S Mathiesen
Answered from the filings on this page, as of the latest one.
Is Jeffrey S Mathiesen buying or selling?
Jeffrey S Mathiesen has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Jeffrey S Mathiesen's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Jeffrey S Mathiesen has 0.
Where does Jeffrey S Mathiesen file Form 4?
Jeffrey S Mathiesen has filed Form 4 at NMTC (NEUROONE MEDICAL TECHNOLOGIES Corp); HSDT (HELIUS MEDICAL TECHNOLOGIES, INC.) as CFO and Treasurer. 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.