ZSTK Insider Transactions
8 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–8; provenance stays internal.
ZSTK insiders transaction timeline
PurchaseSale
| Insider profile | Role | Date | Transaction | Shares | Price |
|---|---|---|---|---|---|
| Rong Rudy | President | 2026-08-19 | Sale | 1,000 | $7.57 |
| Heinrich Michael | Executive Chairman | 2026-07-20 | Purchase | 4,608,575 | $0.7549 |
| Starke Clifford | CEO | 2024-09-13 | Purchase | 6,795.0 | $0.95 |
| Wolkin Harold | Director | 2024-09-06 | Purchase | 15,000.0 | $0.98 |
| Wolkin Harold | Director | 2024-09-06 | Purchase | 5,000.0 | $0.95 |
| Wolkin Harold | Director | 2024-09-06 | Purchase | 5,000.0 | $0.96 |
| Starke Clifford | CEO | 2024-09-05 | Purchase | 51.0 | $0.95 |
| Starke Clifford | CEO | 2024-04-08 | Purchase | 526,315.0 | $1.9 |