Heinrich Michael 4
4 · ZeroStack Corp. · Filed Apr 2, 2026
Research Summary
AI-generated summary of this filing
ZeroStack (ZSTK) Exec Chairman Heinrich Disposes 4.9M Derivative Shares
What Happened
- Heinrich Michael, Executive Chairman and Director of ZeroStack Corp. (ZSTK), reported an "other acquisition or disposition" (transaction code J) on March 31, 2026 that disposed of 4,902,220 derivative securities. No per‑share price or cash proceeds are reported on the Form 4 (price listed as N/A). This was not an open‑market sale of common stock but a derivative transaction tied to a note settlement between the issuer and an affiliated entity.
Key Details
- Transaction date: 2026-03-31. Price: N/A (derivative settlement). Shares affected: 4,902,220 (derivative).
- Shares owned after the transaction: Not stated in the filing excerpt provided.
- Footnote summary: The issuer entered a Note Settlement Agreement with Zero Gravity Labs Inc. (0G), a Delaware company owned and controlled by Heinrich Michael, under which the issuer paid 50,000,000 Tokens to 0G by March 31, 2026 to satisfy a convertible promissory note. The original note represented a principal amount of 50,000,000 0G bitcoin tokens.
- Filing timeliness: Form 4 filed 2026-04-02 for a 2026-03-31 transaction — appears to have been filed within the standard two business days.
Context
- This was a related‑party derivative settlement (the company settled a convertible note held by an entity owned by the reporting person) rather than a conventional stock sale or purchase. Such transactions typically reflect contract settlement terms and do not necessarily signal the insider's buy/sell sentiment about the company's common stock.
Insider Transaction Report
Form 4
ZeroStack Corp.ZSTK
Heinrich Michael
DirectorExecutive Chairman
Transactions
- Other
Convertible Promissory Note
[F1][F2]2026-03-31−4,902,220→ 0 total(indirect: Held by Zero Gravity Labs Inc., a corporation owned and controlled by the Reporting Person)Exercise: $33.34From: 2025-10-23Exp: 2035-09-22→ Common Shares (4,902,220 underlying)
Footnotes (2)
- [F1]On March 31, 2026, the Issuer entered into a note settlement agreement (the "Note Settlement Agreement") with Zero Gravity Labs Inc., a Delaware corporation ("0G") pursuant to which the convertible promissory note (the "Note") issued to 0G pursuant to the securities purchase agreement dated September 22, 2025, as amended on October 9, 2025, by and between the Issuer and 0G was settled. The Note Settlement Agreement provides that upon payment by the Issuer to 0G on or before March 31, 2026, of 50,000,000 Tokens (as defined in the Note), the Issuer shall be deemed to have paid the entire Principal (as defined in the Note) and Interest (as defined in the Note) of the Note in full and the Issuer shall have no further obligations under the Note and the Note shall be deemed to be satisfied.
- [F2]Represents issuance of convertible promissory note to Zero Gravity Labs Inc., a Delaware corporation owned and controlled by the Reporting Person, in the principal amount of 50,000,000 0G bitcoin tokens.
Signature
/s/ Dany Vaiman as attorney-in-fact for Michael Heinrich|2026-04-02