Summary
Updated Aug 31, 2026
Clifford Starke is CEO of ZeroStack Corp. (ZSTK). 2 SEC Form 4 filings on record going back to 2024, most recently on 30 June 2025.
Recent Transactions
1Every recent SEC Form 4 transaction Clifford Starke has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Clifford Starke files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Daniel Reis-Faria - $150.00M of ZSTK open-market activity in the last 12 months
- Michael Heinrich - $3.48M of ZSTK open-market activity in the last 12 months
- Rudy Rong - $8K of ZSTK open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Clifford Starke?
Clifford Starke is a corporate insider, tracked as CEO of ZeroStack Corp. (ZSTK). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Clifford Starke last file a Form 4?
The most recent primary Form 4 on record is dated 30 June 2025, one of 2 filings going back to 2024.
Where can I see all of Clifford Starke's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Follow Clifford Starke and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial
