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This page shows the rows from one Form 4 filing as reported to the SEC.
Big buy
Michael Heinrich: large open-market buy of ZSTK
$3.5M open-market purchase by Michael Heinrich, Executive Chairman at ZeroStack Corp, filed July 20, 2026. Learn more
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Big BuyZSTK
$1.86-4.12% today
Michael Heinrich · Executive Chairman at ZeroStack Corp
$3.5M
Michael Heinrich bought $3.5M of ZSTK (ZeroStack Corp).
Insider purchase
Transaction details
Michael Heinrich, a Executive Chairman, reported a $3.5M open-market purchase equal to 99% of ZSTK's market cap.
Michael Heinrich (Executive Chairman) bought 4,608,575 shares of ZSTK, ZeroStack Corp, Financial Services ($3.5M market cap), at $0.7549 per share on July 20, 2026 for a total of $3.5M (99% of the market cap).
Michael Heinrich
Executive Chairman
Purchase value$3.5M
Shares purchased4,608,575
Price per share$0.7549 per share
- % of market cap
- 99%
- Trade date
- July 20, 2026
- Filed
- July 20, 2026
- Filing delay
- 0 days
Permalink https://bluecollarpicks.com/insider-trading/ZSTK/buy/2108519
Market context
ZSTK market snapshot
Current price$1.86
1-day change-4.12%
Market cap$3.5M
SectorFinancial Services
Next earningsNovember 3, 2026
$1.86
Current price$1.86
Analyst target$11.00 (+614.3%)
Last enriched August 6, 2026 at 8:07 AM EDT.
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Public Form 4 filings, normalized for cleaner scanning. What do these codes mean?
| Ticker | Type & Role | Value | |
|---|---|---|---|
| This filing | Big Buy Director | $3.5M | |
Exercise and Sell CEO | $595 | ||
Grant CFO | $0 | ||
Grant Director | $0 | ||
Grant Director | $0 | ||
Other Director | Not reported | ||
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