ZeroStack Corp. (ZSTK) insider trading.
In Q3 2026, insiders at ZeroStack Corp. reported 3 non-derivative transactions on 5 Forms 3, 4 and 5: 1 open-market purchase worth $3.5M and 1 sale worth $8K.
- Transactions
- 3
- Purchases (P)
- 1
- Sales (S)
- 1
- Net shares, P minus S
- 4,607,575
- Insiders
- 3
- Last filed
- 2026-08-21
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Rong Rudy | Officer · President | 1 | 0 | 1 |
| Reis-Faria Daniel | Director, Officer · CEO | 1 | 0 | 0 |
| Heinrich Michael | Director, Officer · Executive Chairman | 1 | 1 | 0 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-19 | Rong Rudy | S (D) | 1,000 | $7.57 | 0 | Form 4 |
| 2026-07-20 | Reis-Faria Daniel | X (A) | 5,954,743 | $0 | 5,954,743 | Form 4 |
| 2026-07-20 | Heinrich Michael | P (A) | 4,608,575 | $0.75 | 4,608,575 | Form 4 |
Transaction codes in this quarter
Get ZSTK insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=1790169&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · ZSTK company page · ZeroStack Corp. on SEC.gov
Questions
Are insiders buying or selling ZeroStack Corp. (ZSTK)?
In Q3 2026, insiders at ZeroStack Corp. reported 3 non-derivative transactions on 5 Forms 3, 4 and 5: 1 open-market purchase worth $3.5M and 1 sale worth $8K. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these ZeroStack Corp. insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/zstk.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.