ZeroStack Corp. (ZSTK)
Nasdaq · Finance Services · Inc. TX
What they're doing
Between 2026-06-21 and 2026-09-19, public records show 4 signals for ZeroStack Corp.. Most notable: 2026-07-20: Heinrich Michael (director) bought $3.5M of stock; 2026-07-23: Filed 8-K disclosing acquisition or disposition of assets; 2026-08-19: Filed 8-K disclosing material agreement, acquisition or disposition of assets, director or officer change. Federal contract obligations over the last 24 months total $0. This summary was assembled automatically from SEC EDGAR, USAspending.gov, U.S. Senate lobbying disclosures and Wikimedia pageview counts.
Generated 2026-09-19 from public records.
Signals, last 12 months
- Material 8-K filingFiled 8-K disclosing material agreement, acquisition or disposition of assets, director or officer change
- Material 8-K filingFiled 8-K disclosing acquisition or disposition of assets
- Insider purchaseHeinrich Michael (director) bought $3.5M of stock
- Material 8-K filingFiled 8-K disclosing director or officer change
- Material 8-K filingFiled 8-K disclosing director or officer change
- Material 8-K filingFiled 8-K disclosing material agreement
- Material 8-K filingFiled 8-K disclosing director or officer change
- Material 8-K filingFiled 8-K disclosing material agreement
- Material 8-K filingFiled 8-K disclosing director or officer change
- Material 8-K filingFiled 8-K disclosing director or officer change
- Material 8-K filingFiled 8-K disclosing material agreement
- Material 8-K filingFiled 8-K disclosing material agreement, acquisition or disposition of assets, director or officer change
- Material 8-K filingFiled 8-K disclosing material agreement
Insider transactions
| Date | Insider | Role | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-08-19 | Rong Rudy | officer | S | 1,000 | 7.57 | $7,570 |
| 2026-07-20 | Heinrich Michael | director | P | 4,608,575 | 0.75 | $3,479,013 |
| 2026-07-20 | Reis-Faria Daniel | director | X | 5,954,743 | 0 | $595 |
| 2024-12-15 | WOO EDWARD | director | A | 50,000 | — | — |
| 2024-12-15 | Starke Clifford | director | A | 900,000 | — | — |
| 2024-12-15 | DORF SAMMY | director | A | 250,000 | — | — |
| 2024-12-15 | WOO EDWARD | director | A | 50,000 | — | — |
| 2024-12-15 | Starke Clifford | director | A | 900,000 | — | — |
| 2024-12-15 | DORF SAMMY | director | A | 250,000 | — | — |
| 2024-09-13 | Starke Clifford | director | P | 6,795 | 0.95 | $6,455 |
| 2024-09-13 | Starke Clifford | director | P | 6,795 | 0.95 | $6,455 |
| 2024-09-06 | Wolkin Harold | director | P | 5,000 | 0.96 | $4,800 |
| 2024-09-06 | Wolkin Harold | director | P | 15,000 | 0.98 | $14,700 |
| 2024-09-06 | Wolkin Harold | director | P | 5,000 | 0.95 | $4,750 |
| 2024-09-06 | Wolkin Harold | director | P | 5,000 | 0.96 | $4,810 |
| 2024-09-06 | Wolkin Harold | director | P | 5,000 | 0.95 | $4,760 |
| 2024-09-06 | Wolkin Harold | director | P | 15,000 | 0.98 | $14,685 |
| 2024-09-05 | Starke Clifford | director | P | 51 | 0.95 | $48 |
| 2024-09-05 | Starke Clifford | director | P | 51 | 0.95 | $48 |
| 2024-04-08 | Starke Clifford | director | P | 526,315 | 1.9 | $999,999 |
| 2023-11-15 | Vaiman Dany | officer | A | 149,024 | — | — |
| 2023-11-15 | SOLOMON THOMAS | director | A | 35,766 | — | — |
| 2023-11-15 | WOO EDWARD | director | A | 74,512 | — | — |
| 2023-11-15 | Taylor Kevin | director | A | 124,186 | — | — |
| 2023-11-15 | Starke Clifford | director | A | 327,851 | — | — |
| 2023-03-17 | LESLIE JOHN TIMOTHY | director | A | 125,000 | 0 | $0 |
| 2023-03-17 | Richardson Beverley | director | A | 150,000 | 0 | $0 |
| 2023-03-17 | MASTRONARDI MARC | director | A | 150,000 | 0 | $0 |
| 2023-03-17 | ROA JUAN CARLOS GOMEZ | director | A | 150,000 | 0 | $0 |
| 2023-03-17 | Konigsberg Brandon | director | A | 100,000 | 0 | $0 |
Federal contracts
No federal contract actions on record for this recipient mapping.
Lobbying
No federal lobbying filings on record for this client mapping.
Public attention
No Wikipedia pageview data linked to this company.
Recent filings
- 2026-09-15 EFFECT
- 2026-09-04 SCHEDULE 13G
- 2026-09-04 AW
- 2026-09-04 POS AM
- 2026-09-02 EFFECT
- 2026-09-02 EFFECT
- 2026-09-02 EFFECT
- 2026-09-02 EFFECT
- 2026-09-02 SCHEDULE 13G
- 2026-09-02 D
- 2026-08-28 POS AM
- 2026-08-28 POS AM
- 2026-08-28 POS AM
- 2026-08-28 POS AM
- 2026-08-26 S-3
- 2026-08-26 S-8
- 2026-08-25 S-8 POS
- 2026-08-25 S-8 POS
- 2026-08-25 S-8 POS
- 2026-08-25 S-8 POS