Form 4 for ZSTK ZeroStack Corp.
Accepted 2026-07-20 18:31:03 ET · period of report 2026-07-20 · accession 0000912282-26-000998 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DI | 2026-07-20 18:31 | 2026-07-20 | ZSTK | Heinrich Michael | Executive COB, Dir | P - Purchase | $0.7549 | +4.61M | 4.61M | New | +$3.48M |
| D | 2026-07-20 18:31 | 2026-07-20 | ZSTK | Heinrich Michael | Executive COB, Dir | A - Grant | $0.00 | +500.0K | 500.0K | New | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Shares | 2026-07-20 | P | A | 4,608,575 | $0.7549 | 4,608,575 | I Held by Zero Gravity Labs, Inc. | — | — | (F1) Purchase price in the form of native blockchain tokens; each token deemed to have a value of US$0.7549. (F2) Held by Zero Gravity Labs Inc., a Delaware corporation owned and controlled by the Reporting Person. |
| 2 | Derivative | Employee Stock Option (Right to Buy) | 2026-07-20 | A | A | 500,000 | $0.00 | 500,000 | D | $5.10 · — to 2036-05-05 | 500,000 Common Shares | (F3) The options were approved by the Issuer's board of directors on March 5, 2026, subject to shareholder approval, which occurred on July 20, 2026. The options vest in five equal installments; the vesting of each 20% installment is contingent on the Issuer's volume weighted average price reaching a specified threshold. |