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Are ZeroStack Insiders Buying or Selling?
ZeroStack (ZSTK) has had 2 insider transactions in the past 90 days, including 1 buy and 1 sell. The most recent was Rudy Rong, who sold 1,000 shares at $7.57 on August 19, 2026.
Insider trading patterns can signal confidence or concern from the people who know the company best. AltIndex tracks insider transactions as one of 25+ alternative data signals in the ZSTK AI Score. For government officials trading this stock, see ZSTK congressional trading.
Recent ZeroStack Insider Transactions
| Insider | Transaction Date | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Rudy Rong | Aug 19, 2026 | Sell | 1,000 | $7.57 | $7,600 |
| Michael Heinrich | Jul 20, 2026 | Buy | 4,608,575 | $0.75 | $3.5M |
Frequently Asked Questions: ZeroStack Insider Trading
In the past 90 days, ZeroStack insiders have made 1 buy and 1 sell. The net buying may indicate insider confidence in the company’s outlook.
The most recent sale was by Rudy Rong who sold 1,000 shares on August 19, 2026. View all transactions in the table on this page.
Insider buying is generally a stronger signal than insider selling, since insiders may sell for personal reasons (diversification, taxes) but typically buy only when they believe the stock is undervalued. AltIndex uses insider transaction patterns alongside 25+ other signals in the AI Score.
Heinrich Michael has bought the most ZSTK stock in the last 2 years, with a total value of $3.5M.
Rong Rudy has sold the most ZSTK stock in the last 2 years, with a total value of $7,600.
According to our estimates, the total value of insider transactions for ZeroStack in the last 2 years is positive, amounting to $3.5M. This indicates that insiders have predominantly bought shares, showcasing their confidence in the company's future prospects.




