Zerostack Corp (ZSTK)

Zerostack Corp recorded a single significant insider purchase during the past ninety days. Director Michael Heinrich acquired shares valued at approximately 54.34 million dollars on July 20, 2026. This transaction occurred shortly before the company released its latest earnings report, which showed a substantial miss on earnings per share expectations.

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Ticker: ZSTK Exchange: NAS

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings

Insider activity signals

0 activity signals detected for Zerostack Corp

No insider activity signals detected

Insider trades have not triggered unusual activity signals for this company.

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Trades

Heinrich, Michael Director of Issuer, Senior Officer of Issuer Executive Director

Transaction date 20 Jul 2026

Purchase

Price

443.71

Quantity 35,713

Value US$2,589,001

Notification date	Transaction date	B/S Transaction type	Insider and/or position	Nb. shares Price Value	Number of shares	Price	Value	Details
2026-07-20	2026-07-20	B Purchase	Heinrich, Michael Director of Issuer, Senior Officer of Issuer Executive Director	35,713 443.71 US$2,589,001	35,713	443.71	US$2,589,001