4 Form 4 filings for ZSTK between 2026-07-20 and 2026-08-21, from 4 filers. 4 discretionary (1 sales, 1 purchases). None state a filing-level total — that aggregate began on 2026-08-17 — so each row below shows only its largest transaction. Prices ran $1 to $8.
| Filed | Filer | Role | Action | Shares largest txn | Price | Filing total | Txns |
|---|---|---|---|---|---|---|---|
| 2026-08-21 | Rong Rudy | sold | 1,000 | $7.57 | — | — | |
| 2026-07-20 | Heinrich Michael | purchased | 4,608,575 | $0.75 | — | — | |
| 2026-07-20 | Reis-Faria Daniel | CEO | — | 5,954,743 | $0.00 | — | — |
| 2026-07-20 | Vaiman Dany (CFO at ZeroStack Corp.) filed a Form 4; no parseable transaction details were found in the filing. | ||||||
| 4 filings · 4 filers · disclosed totals only | $0 (0/4) | — | |||||