Insider · CIK 0001971132
Walter Marc Hertz
Files at GRI (GRI Bio, Inc.). First filing -, latest -.
In brief
Walter Marc Hertz files SEC Form 4 as CEO and director at GRI (GRI Bio, 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; Walter Marc Hertz has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 3 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 18, 2025 | GRI GRI Bio, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +103,067 | $0.00 | $0 | 103,067 | Sep 22, 2025 |
| Aug 26, 2025 | GRI GRI Bio, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +26,688 | $0.00 | $0 | 26,688 | Aug 27, 2025 |
| Jan 23, 2025 | GRI GRI Bio, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +129,730 | $0.69 | $89k | 129,730 | Jan 24, 2025 |
Questions about Walter Marc Hertz
Answered from the filings on this page, as of the latest one.
Is Walter Marc Hertz buying or selling?
Walter Marc Hertz has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Walter Marc Hertz's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Walter Marc Hertz has 0.
Where does Walter Marc Hertz file Form 4?
Walter Marc Hertz has filed Form 4 at GRI (GRI Bio, Inc.) as Chief Executive Officer. 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.