Form
SCHEDULE 13G
Passive or exempt beneficial ownership filing.
Hack VC Management, LLC - 20 Jul 2026 SCHEDULE 13G Report for ZeroStack Corp. Common Stock, $0.0001 par value per share (ZSTK)
- Filing manager
- Hack VC Management, LLC
- Reporting owner
- Alexander Pack
- Beneficially owned shares
- 1,920,360 shares
- Large-stake signal
-
Ownership
8.6%Beneficial ownership of this reported class.
Shares
1,920,360 sharesShares beneficially owned as disclosed.
Event date
20 Jul 2026Date tied to the ownership event or amendment.
Accepted by SEC
19 Oct 2026EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 8.6%
- Symbol
- ZSTK
- Shares outstanding
- 22,329,767 shares
- SEC form
- SCHEDULE 13G
- Accepted by SEC
- 19 Oct 2026, 16:43:58 UTC
- Event date
- 20 Jul 2026
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
4 source fields
Filing notes and source
Key filing fact
Hack VC Management, LLC disclosed 8.6% ownership in ZeroStack Corp. Common Stock, $0.0001 par value per share (ZSTK) on 20 Jul 2026.
Key facts
- Hack VC Management, LLC filed SCHEDULE 13G for ZeroStack Corp. Common Stock, $0.0001 par value per share (ZSTK).
- Disclosed ownership: 8.6%.
- Date of event: 20 Jul 2026.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 19 Oct 2026, 16:43.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (9)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Hack VC Management, LLC | 0.4% | 80,015 | 0 | 80,015 | /s/ Daniel Bulaevsky | By Daniel Bulaevsky, General Counsel | |
| 0G Segregated Portfolio, a designated Segregated Portfolio of Sybil Ventures SPC Ltd. | 0.4% | 80,015 | 0 | 80,015 | /s/ Daniel Bulaevsky | By Hack VC Management, LLC, its Manager, By Daniel Bulaevsky, General Counsel | |
| Hack Seed Fund II GP LLC | 7.5% | 1,680,315 | 0 | 1,680,315 | /s/ Daniel Bulaevsky | By Daniel Bulaevsky, Authorized Signatory | |
| Hack Seed Fund II LP | 7.5% | 1,680,315 | 0 | 1,680,315 | /s/ Daniel Bulaevsky | By Hack Seed Fund II GP LLC, its general partner, By Daniel Bulaevsky, Authorized Signatory | |
| Sybil Capital Fund I GP LLC | 0.4% | 80,015 | 0 | 80,015 | /s/ Daniel Bulaevsky | By Daniel Bulaevsky, Authorized Signatory | |
| Hack VC 2021 LP | 0.4% | 80,015 | 0 | 80,015 | /s/ Daniel Bulaevsky | By Sybil Capital Fund I GP LLC, its general partner, By Daniel Bulaevsky, Authorized Signatory | |
| Hack VF 2022 GP LLC | 0.4% | 80,015 | 0 | 80,015 | /s/ Daniel Bulaevsky | By Daniel Bulaevsky, Authorized Signatory | |
| Hack VF 2022 LP | 0.4% | 80,015 | 0 | 80,015 | /s/ Daniel Bulaevsky | By Hack VF 2022 GP LLC, its general partner, By Daniel Bulaevsky, Authorized Signatory | |
| Alexander Pack | 8.6% | 1,920,360 | 0 | 1,920,360 | /s/ Alexander Pack | Alexander Pack |
CIK / CUSIP context first