No open-market buys or sells in this period. The transactions below are grants, option exercises and gifts, which carry no market price.
Trading track record · all companies
Not enough open-market trades to chart a track record yet.
Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.
Transactions · 365d
No open-market buys or sells in this period — showing all activity (grants, exercises & gifts).
-
ZSTK Other·J
Executive Chairman
—
4.9M sh
-
ZSTK Grant·A
Executive Chairman
$0
471.2K sh
Own New
-
ZSTK Exercise·X
Executive Chairman
—
4.9M sh
Own New
| Date▾ | Ticker | Type | Shares | Value |
|---|---|---|---|---|
| Mar 31, 2026 | ZSTK | Other J | 4.9M | — |
| Dec 19, 2025 | ZSTK | Grant A | 471.2K | $0 |
| Oct 23, 2025 | ZSTK | Exercise X | 4.9M | — |
Buy Sell Non-market (grant · exercise · gift)
About Heinrich Michael
This profile aggregates every SEC Form 4 insider transaction reported by Heinrich Michael across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.