🕵️ Zerostack Corp. ($ZSTK)
SEC insider & ownership activity, last 12 months · CIK 1790169 · every row links its SEC filing
Insider buy and sell values were withheld pending verification over the last 12 months. No red-flag 8-Ks in the window.
Insider flow
2 buyers, value withheld pending verification (2 lots) · 1 seller, value withheld pending verification (1 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Heinrich Michael | 1 | value withheld pending verification | 0 | – | Jul 20, 2026 |
| Reis-Faria Daniel | 1 | value withheld pending verification | 0 | – | Oct 9, 2025 |
| Rong Rudy | 0 | – | 1 | value withheld pending verification | Aug 19, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Reis-Faria Daniel | 37.5% | 13D | Jul 20, 2026 | filing ↗ | |
| Heinrich Michael | 30.2% | 13D | Jul 20, 2026 | filing ↗ | |
| ZERO Gravity LABS Inc. | 26.4% | 13D | Jul 20, 2026 | filing ↗ | |
| Starke Clifford | 17.1% | 13D | May 9, 2025 | filing ↗ | |
| Blockcat PTE. Ltd. | 8.3% | 13G | Sep 4, 2026 | filing ↗ | |
| Puple AI Inc. | 8.3% | 13G | Sep 2, 2026 | filing ↗ | |
| Empery Asset Management, LP | 5.4% | 13G | Jan 21, 2025 | filing ↗ | |
| Ryan M. Lane | 5.4% | 13G | Jan 21, 2025 | filing ↗ | |
| Martin D. Hoe | 5.4% | 13G | Jan 21, 2025 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Other events (8.01) | Aug 21, 2026 | filing ↗ |
| Material agreement (1.01) | Aug 19, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | Aug 19, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Aug 19, 2026 | filing ↗ |
| Officer/director changes (5.02) | Aug 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 19, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | Jul 20, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 20, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jul 20, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jul 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 20, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Material agreement (1.01) | Mar 31, 2026 | filing ↗ |
| Agreement terminated (1.02) | Mar 31, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Mar 31, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 31, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jan 29, 2026 | filing ↗ |
| Other events (8.01) | Jan 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 29, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 5, 2026 | filing ↗ |
| Material agreement (1.01) | Dec 29, 2025 | filing ↗ |
| Agreement terminated (1.02) | Dec 29, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Dec 29, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 29, 2025 | filing ↗ |
| Officer/director changes (5.02) | Dec 19, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 19, 2025 | filing ↗ |
| Officer/director changes (5.02) | Dec 19, 2025 | filing ↗ |
| Shareholder vote (5.07) | Dec 19, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 19, 2025 | filing ↗ |