ZeroStack holder reports 10% stake in company
Michael Heinrich filed an amended ownership report for ZeroStack Corp., showing beneficial ownership of 471,208 common shares, equal to 10.0% of the outstanding common shares.
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Form Type
SCHEDULE 13D/A
Rhea-AI Filing Summary
Michael Heinrich filed an amended ownership report for ZeroStack Corp., showing beneficial ownership of 471,208 common shares, equal to 10.0% of the outstanding common shares. He holds sole voting and dispositive power over these shares.
A related entity, Zero Gravity Labs Inc., now reports ownership of 0 shares of ZeroStack. On March 31, 2026, ZeroStack entered into a Note Settlement Agreement with Zero Gravity Labs under which payment of 50,000,000 Tokens fully satisfied the principal and interest of a prior convertible promissory note, eliminating further obligations under that note.
Key Figures
Beneficial ownership: 471,208 common shares
Ownership percentage: 10.0%
Zero Gravity Labs ownership: 0 shares
+2 more
5 metrics
Beneficial ownership
471,208 common shares
Shares beneficially owned by Michael Heinrich
Ownership percentage
10.0%
Portion of ZeroStack common shares held by Heinrich
Zero Gravity Labs ownership
0 shares
Aggregate amount beneficially owned by Zero Gravity Labs Inc.
Token payment
50,000,000 Tokens
Consideration to settle convertible promissory note under Note Settlement Agreement
Event date
March 31, 2026
Date triggering the filing and Note Settlement Agreement
Key Terms
beneficially owned, sole voting power, dispositive power, Note Settlement Agreement, +2 more
6 terms
beneficially owned financial
"Number of Shares Beneficially Owned by Each Reporting Person With:"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
sole voting power financial
"Number of Shares Beneficially Owned by Each Reporting Person With: | 7 | Sole Voting Power 471,208.00"
Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.
dispositive power financial
"9 | Sole Dispositive Power 471,208.00 10 | Shared Dispositive Power 0.00"
Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.
Note Settlement Agreement financial
"On March 31, 2026, the Issuer entered into a note settlement agreement (the "Note Settlement Agreement") with 0G"
convertible promissory note financial
"the convertible promissory note issued to 0G pursuant to the securities purchase agreement dated September 22, 2025"
A convertible promissory note is a loan a company takes now that can later be turned into shares instead of being repaid in cash. Think of it as lending money with the option to accept ownership in the business down the road; that matters to investors because it affects who gets paid first, how much ownership existing shareholders keep, and the company’s future valuation and cash needs. Terms such as conversion price, interest and maturity determine the financial impact.
Schedule 13D regulatory
"If the filing person has previously filed a statement on Schedule 13G to report the acquisition"
A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What ownership stake in ZeroStack Corp. does Michael Heinrich report?
Michael Heinrich reports beneficial ownership of 471,208 common shares of ZeroStack Corp., representing 10.0% of the company’s common shares. He has sole voting and dispositive power over this stake, with no shared authority reported in the filing.
What is the Note Settlement Agreement between ZeroStack and Zero Gravity Labs?
The Note Settlement Agreement between ZeroStack Corp. and Zero Gravity Labs Inc. settles a prior convertible promissory note. Upon payment of 50,000,000 Tokens by ZeroStack on or before March 31, 2026, the note’s principal and interest are deemed fully paid and satisfied.
How was the convertible promissory note between ZeroStack and Zero Gravity Labs resolved?
ZeroStack Corp. agreed to pay 50,000,000 Tokens to Zero Gravity Labs Inc. under the Note Settlement Agreement. That payment causes the entire principal and interest of the convertible promissory note to be treated as fully paid, leaving ZeroStack with no further obligations under the note.
What roles does Michael Heinrich hold with ZeroStack Corp. and Zero Gravity Labs?
Michael Heinrich is the Chief Executive Officer of Zero Gravity Labs Inc. and serves as a director and Chairman of the Board of ZeroStack Corp. as of September 20, 2025, according to the filing’s background information section.
Were there any reported legal or regulatory proceedings involving Michael Heinrich or Zero Gravity Labs?
The filing states that Michael Heinrich and Zero Gravity Labs Inc. have not been convicted in criminal proceedings and have not been parties to civil proceedings resulting in orders related to securities law violations during the past five years.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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