Michael Heinrich Reports 10% Stake in ZeroStack Corp. Following Note Settlement

Michael Heinrich, the Chief Executive Officer of Zero Gravity Labs Inc. (0G) and Chairman of ZeroStack Corp. (the Issuer), filed a Schedule 13D/A reporting a 10.0% ownership stake in the Issuer. As of March 31, 2026, Heinrich holds sole voting and dispositive power over 471,208 common shares. This filing follows a Note Settlement Agreement between the Issuer and 0G, a Delaware corporation controlled by Heinrich. Under the agreement, a previously issued convertible promissory note was settled in full upon the Issuer's payment of 50,000,000 Tokens to 0G. Following this settlement, 0G itself reports zero shares, while Heinrich maintains his personal holding of 471,208 shares. The transaction effectively satisfies all principal and interest obligations under the original securities purchase agreement dated September 22, 2025. Heinrich’s position represents a significant stake in the Toronto-based technology company.