It has been a mixed year for ZeroStack Corp. insiders: $3.5 million bought by one person and $7,570 sold by one, so more buying than selling overall.
The largest purchase came from Heinrich Michael (Chair), about $3.5 million.
Looking at the quarterly pattern: Last full quarter: net buying by insiders. Insiders bought in 1 of the last 7 full quarters. 11 investment managers listed ZSTK in their latest 13F filings (Q2 2026); more funds sold than bought.
| Filed | Insider | Role | Type | Shares | Price | Value | Source |
|---|---|---|---|---|---|---|---|
| Aug 21, 2026 | Rong Rudy | President | Sell | 1,000 | $7.57 | $8K | SEC |
| Jul 20, 2026 | Heinrich Michael | Chair | Buy | 4,608,575 | $0.75 | $3.5M | SEC |
In the last 12 months ZeroStack Corp. insiders made open-market purchases worth about $3.5 million and sales worth about $7,570. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
The most recent open-market insider trade in ZSTK was filed on 2026-08-21.
11 investment managers reported holding ZSTK in SEC Form 13F filings for Q2 2026.
No congressional trades in ZSTK were reported in the past two years. The full list is free on CapitalSnitch.
Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1). Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).