FLGC SCHEDULE 13G: SEC filing

Blockchain Builders Fund I, LP

Filed with the SEC on Nov 13, 2026 · accession 0001969361-26-000001

FLGC filed a SCHEDULE 13G (schedule 13g) with the SEC on Nov 13, 2026. Blockchain Builders Fund I, LP filed a Schedule 13G reporting beneficial ownership of 82,886 shares (9.9%) of ZeroStack Corp. common stock, issuable upon exercise of pre-funded warrants subject to a 9.99% ownership blocker.

Summary of the filing

Blockchain Builders Fund I, LP filed a Schedule 13G reporting beneficial ownership of 82,886 shares (9.9%) of ZeroStack Corp. common stock, issuable upon exercise of pre-funded warrants subject to a 9.99% ownership blocker. The filing is a passive investment disclosure under Rule 13d-1(c).

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Key details

Shares beneficially owned (issuable upon exercise of pre-funded warrants)$83K

Total shares underlying Token Pre-Funded Warrants held by the Fund$226K

Shares of Common Stock outstanding as of December 19, 2025$747K

Reporting person / beneficial ownerBlockchain Builders Fund I, LP

General partner of the fundBlockchain Builders GP, LLC

Investment manager of the fundBlockchain Builders, LLC

IssuerZeroStack Corp.

Manager of blockchain builders, llc (investment manager)Gil Rosen

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Frequently asked questions

What did FLGC file with the SEC on Nov 13, 2026?

FLGC filed a SCHEDULE 13G (SEC filing). Blockchain Builders Fund I, LP filed a Schedule 13G reporting beneficial ownership of 82,886 shares (9.9%) of ZeroStack Corp. common stock, issuable upon exercise of pre-funded warrants subject to a 9.99% ownership blocker. The filing is a passive investment disclosure under Rule 13d-1(c).

How do I read a SCHEDULE 13G?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G (schedule 13g): A report the company filed with the SEC (the US market regulator).

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