See up to 3 months of ZSTK. The 7-day demo opens the 1M and 3M ranges and puts ZSTK on your watchlist.
Start 7-day demoLatest ZSTK insider trades
About ZeroStack Corp. (ZSTK)
ZeroStack Corp. files with the SEC under CIK 0001790169 and is classified as drugs, proprietaries and druggists' sundries. It is grouped with Consumer Staples companies on this site. A registration statement was filed on 28 November 2025. No offering has priced.
ZSTK Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 1 | 4,608,575 | $3.48M |
| Open-market sale | 1 | 1,000 | $8K |
| Grant or award | 3 | 1,250,000 | |
ZSTK insider transactions (Form 4)
3724 Form 4 filings on record, the earliest from Dec 17, 2024, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Rudy Rong - Officer | Open-market sale | Common Shares | 1,000 | $7.57 | $8K | |
| Michael Heinrich - Officer | Open-market purchase | Common Shares | 4,608,575 | $0.75 footnote F1 | $3.48M | |
| Michael Heinrich - Officer | Grant or award | Employee Stock Option (Right to Buy) | 500,000 | $0.00 | - | |
| ||||||
| Daniel Reis-Faria - Officer | Other | Common Shares | 5,954,743 | $0.00 | $595 | |
| Daniel Reis-Faria - Officer | Grant or award | Employee Stock Option (Right to Buy) | 500,000 | $0.00 | - | |
| Daniel Reis-Faria - Officer | Other | Pre-Funded Token Warrants | 5,954,743 | $25.19 | $150.00M | |
| Dany Vaiman - Officer | Grant or award | Employee Stock Option ("Right to Buy") | 250,000 | $0.00 | - | |
| Laurence Zeifman | Grant or award | Director Stock Option ("Right to Buy") | 28,000 | $0.00 | - | |
| Edward Woo | Grant or award | Director Stock Option ("Right to Buy") | 35,000 | $0.00 | - | |
| Manfred Leventhal | Grant or award | Director Stock Option ("Right to Buy") | 35,000 | $0.00 | - | |
| Michael Heinrich - Officer | Other | Convertible Promissory Note | 4,902,220 | - footnote F2 | - | |
| ||||||
| Dany Vaiman - Officer | Grant or award | Employee Stock Option ("Right to Buy") | 235,604 | $0.00 | - | |
| Daniel Reis-Faria - Officer | Grant or award | Employee Stock Option (Right to Buy) | 471,208 | $0.00 | - | |
| Michael Heinrich - Officer | Grant or award | Director Stock Option (Right to Buy) | 471,208 | $0.00 | - | |
| Michael Heinrich - Officer | Other | Convertible Promissory Note | 4,902,220 footnote F1 | - footnote F1 | - | |
| ||||||
| Michael John Brown | Grant or award | Deferred Share Units ("DSUs") | 7,468 | $0.00 | - | |
| Daniel Reis-Faria - Officer | Open-market purchase | Pre-Funded Token Warrants | 5,954,743 | $25.19 | $150.00M | |
| Manfred Leventhal | Derivative | Stock Appreciation Rights (SARs) | 5,000 | - | - | |
| Manfred Leventhal | Grant or award | Stock Appreciation Rights (SARs) | 5,000 | - | - | |
| Clifford Starke - Officer | Derivative | Stock Appreciation Rights (SARs) | 1,028,665 | - | - | |
| Clifford Starke - Officer | Grant or award | Stock Appreciation Rights (SARs) | 1,028,665 | - | - | |
| Clifford Starke - Officer | Derivative | Stock Appreciation Rights (SARs) | 575,319 | - | - | |
| Clifford Starke - Officer | Grant or award | Stock Appreciation Rights (SARs) | 575,319 | - | - | |
| Dany Vaiman - Officer | Derivative | Stock Appreciation Rights (SARs) | 342,888 | - | - | |
| Dany Vaiman - Officer | Grant or award | Stock Appreciation Rights (SARs) | 342,888 | - | - | |
| Dany Vaiman - Officer | Derivative | Stock Appreciation Rights (SARs) | 191,773 | - | - | |
| Dany Vaiman - Officer | Grant or award | Stock Appreciation Rights (SARs) | 191,773 | - | - | |
| Dany Vaiman - Officer | Derivative | Stock Appreciation Rights (SARs) | 372,500 | - | - | |
| Dany Vaiman - Officer | Grant or award | Stock Appreciation Rights (SARs) | 372,500 | - | - | |
| Harold Wolkin | Derivative | Stock Appreciation Rights (SARs) | 30,000 | - | - | |
| Harold Wolkin | Grant or award | Stock Appreciation Rights (SARs) | 30,000 | - | - | |
| Edward Woo | Grant or award | Common Shares | 50,000 | - | - | |
| Dany Vaiman - Officer | Grant or award | Stock Appreciation Rights ("SARs") | 372,500 | $0.00 | - | |
| Clifford Starke - Officer | Grant or award | Common Shares | 900,000 | - | - | |
| Manfred Leventhal | Grant or award | Stock Appreciation Rights ("SARs") | 5,000 | $0.00 | - | |
| Sammy Dorf - Officer | Grant or award | Common Shares | 250,000 | - | - | |
| Harold Wolkin | Grant or award | Stock Appreciation Rights ("SARs") | 30,000 | $0.00 | - | |
Item 8.01
Item 1.01, 2.01, 3.02, 5.02, 9.01
Item 3.03, 5.03, 8.01, 9.01
Item 2.01
ZSTK insider trading FAQ
What is the latest insider trade for ZSTK?
ZeroStack Corp. (ZSTK) had 4 insider filings in the last 90 days, with the most recent on 2026-08-21. The full record for ZSTK runs to 24 Form 4 filings, the earliest from 2024-12-17. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying ZSTK stock?
1 insider purchase of ZSTK was filed in the last 90 days, totaling $3.48M.
How many insiders are selling ZSTK stock?
1 insider sale of ZSTK was filed in the last 90 days, totaling $8K.
Where can I see ZSTK SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects ZSTK Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Consumer Staples companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Rudy Rong view on EDGAR
- - Michael Heinrich view on EDGAR
- - Daniel Reis-Faria view on EDGAR
- - Dany Vaiman view on EDGAR
- - Laurence Zeifman view on EDGAR
- - Edward Woo view on EDGAR
- - Manfred Leventhal view on EDGAR
- - Michael Heinrich view on EDGAR
- - Dany Vaiman view on EDGAR
Related companies with recent insider activity
Learn more
- How to read insider buying signals
- What an open-market purchase by an insider can and cannot tell you.
- Insider activity in Consumer Staples
- Where ZSTK's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
Follow ZSTK with a 7-day demo
- ZSTK on your watchlist
- Every ZSTK Form 4 filing on record
- Up to 3 months of ZSTK price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
Start 7-day demoCard required. Your card is never charged for the demo.
