ZeroStack Corp. SEC filings ZSTK
ZeroStack Corp. has 367 filings in SEC EDGAR's recent list, going back to Oct 11, 2019. Its latest annual report, Form ARS, was filed on May 8, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Jul 31, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 2, 2026 (material agreement, agreement ended, officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Material agreement, Agreement ended, Officer or director change
|
Nov 2, 2026 | Nov 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 19, 2026 | — |
| EFFECT | Filing | Sep 15, 2026 | — |
| POS AM | Form pos am | Sep 4, 2026 | — |
| AW | Form aw | Sep 4, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 4, 2026 | — |
| EFFECT | Filing | Sep 2, 2026 | — |
| EFFECT | Filing | Sep 2, 2026 | — |
| EFFECT | Filing | Sep 2, 2026 | — |
| EFFECT | Filing | Sep 2, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 2, 2026 | — |
| D | Filing | Sep 2, 2026 | — |
| POS AM | Form pos am | Aug 28, 2026 | — |
| POS AM | Form pos am | Aug 28, 2026 | — |
| POS AM | Form pos am | Aug 28, 2026 | — |
| POS AM | Form pos am | Aug 28, 2026 | — |
| S-3 | Shelf registration | Aug 26, 2026 | — |
| S-8 | Employee stock plan registration | Aug 26, 2026 | — |
| S-8 POS | Form s-8 pos | Aug 25, 2026 | — |
| S-8 POS | Form s-8 pos | Aug 25, 2026 | — |
| S-8 POS | Form s-8 pos | Aug 25, 2026 | — |
| S-8 POS | Form s-8 pos | Aug 25, 2026 | — |
| S-8 POS | Form s-8 pos | Aug 25, 2026 | — |
| S-8 POS | Form s-8 pos | Aug 25, 2026 | — |
| S-8 POS | Form s-8 pos | Aug 25, 2026 | — |
| 4 | Insider transaction | Aug 21, 2026 | Aug 19, 2026 |
| 3 | Initial insider ownership | Aug 21, 2026 | Aug 18, 2026 |
| 8-K |
Current report
Other events
|
Aug 21, 2026 | Aug 21, 2026 |
| S-3 | Shelf registration | Aug 21, 2026 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Officer or director change
|
Aug 19, 2026 | Aug 19, 2026 |
| S-4 POS | Form s-4 pos | Aug 18, 2026 | — |
| 8-K12B | Form 8-k12b | Aug 18, 2026 | Aug 18, 2026 |
| 10-Q | Quarterly report | Jul 31, 2026 | Jun 30, 2026 |
| D | Filing | Jul 29, 2026 | — |
| 8-K |
Current report
Acquisition or sale of assets
|
Jul 23, 2026 | Jul 20, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 21, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 21, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 21, 2026 | — |
| 4 | Insider transaction | Jul 20, 2026 | Jul 20, 2026 |
| 4 | Insider transaction | Jul 20, 2026 | Jul 20, 2026 |
| 4 | Insider transaction | Jul 20, 2026 | Jul 20, 2026 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
Jul 20, 2026 | Jul 20, 2026 |
| EFFECT | Filing | Jun 17, 2026 | — |
| 424B3 | Prospectus | Jun 17, 2026 | — |
| S-4 | Registration for a merger or exchange | Jun 10, 2026 | — |
| PRER14A | Form prer14a | May 27, 2026 | — |
| ARS | Annual report to shareholders | May 8, 2026 | Dec 31, 2025 |
| PRE 14A | Preliminary proxy statement | May 8, 2026 | Jul 13, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 8-K |
Current report
Officer or director change
|
May 6, 2026 | May 5, 2026 |
| 10-Q | Quarterly report | May 4, 2026 | Mar 31, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 2, 2026 | — |
| 4 | Insider transaction | Apr 2, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Material agreement, Agreement ended, Unregistered share sale
|
Mar 31, 2026 | Mar 31, 2026 |
| 10-K | Annual report | Feb 27, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Jan 29, 2026 | Jan 29, 2026 |
| 424B5 | Prospectus supplement | Jan 27, 2026 | — |
| FWP | Free writing prospectus | Jan 27, 2026 | — |
| 424B3 | Prospectus | Jan 27, 2026 | — |
| UPLOAD | Letter from the SEC | Jan 27, 2026 | — |
| EFFECT | Filing | Jan 26, 2026 | — |
| CORRESP | Letter to the SEC | Jan 23, 2026 | — |
| 3 | Initial insider ownership | Jan 15, 2026 | Jan 6, 2026 |
| S-3 | Shelf registration | Jan 8, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Jan 6, 2026 | Jan 5, 2026 |
| 8-K |
Current report
Material agreement, Agreement ended, Unregistered share sale
|
Dec 31, 2025 | Dec 29, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 23, 2025 | Dec 19, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 23, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 23, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 23, 2025 | — |
| S-8 | Employee stock plan registration | Dec 23, 2025 | — |
| 4 | Insider transaction | Dec 22, 2025 | Dec 19, 2025 |
| 4 | Insider transaction | Dec 22, 2025 | Dec 19, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Dec 22, 2025 | Dec 19, 2025 |
| 4 | Insider transaction | Dec 22, 2025 | Dec 19, 2025 |
| EFFECT | Filing | Dec 10, 2025 | — |
| S-1 | Registration statement | Nov 28, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Nov 28, 2025 | Nov 28, 2025 |
| S-8 | Employee stock plan registration | Nov 18, 2025 | — |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| DEF 14A | Proxy statement | Nov 4, 2025 | Dec 19, 2025 |
| 4 | Insider transaction | Oct 27, 2025 | Oct 23, 2025 |
| SCHEDULE 13D | Ownership over 5% (active) | Oct 27, 2025 | — |
| PRE 14A | Preliminary proxy statement | Oct 24, 2025 | Dec 19, 2025 |
| 4 | Insider transaction | Oct 23, 2025 | Oct 22, 2025 |
| 3 | Initial insider ownership | Oct 22, 2025 | Sep 20, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 10, 2025 | Oct 9, 2025 |
| SCHEDULE 13D | Ownership over 5% (active) | Oct 10, 2025 | — |
| 4 | Insider transaction | Oct 10, 2025 | Oct 9, 2025 |
| D | Filing | Oct 10, 2025 | — |
| D | Filing | Oct 10, 2025 | — |
| 3 | Initial insider ownership | Oct 6, 2025 | Sep 20, 2025 |
| 8-K |
Current report
Other events
|
Sep 29, 2025 | Sep 29, 2025 |
| 424B5 | Prospectus supplement | Sep 29, 2025 | — |
| 8-K |
Current report
Material agreement
|
Sep 23, 2025 | Sep 23, 2025 |
| 424B5 | Prospectus supplement | Sep 23, 2025 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Unregistered share sale, Officer or director change
|
Sep 23, 2025 | Sep 19, 2025 |
| 8-K |
Current report
Listing notice, Officer or director change
|
Aug 27, 2025 | Aug 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change
|
Aug 4, 2025 | Aug 4, 2025 |
| 10-Q | Quarterly report | Aug 1, 2025 | Jun 30, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 21, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 21, 2025 | — |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 30, 2025 | Jun 30, 2025 |
| EFFECT | Filing | May 22, 2025 | — |
| CORRESP | Letter to the SEC | May 20, 2025 | — |
| UPLOAD | Letter from the SEC | May 20, 2025 | — |
| S-3 | Shelf registration | May 14, 2025 | — |
| 10-Q | Quarterly report | May 13, 2025 | Mar 31, 2025 |
| D | Filing | May 9, 2025 | — |
| DEF 14A | Proxy statement | May 6, 2025 | Jun 30, 2025 |
| ARS | Annual report to shareholders | May 5, 2025 | Dec 31, 2024 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 2, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
May 2, 2025 | May 2, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 29, 2025 | — |
| PRE 14A | Preliminary proxy statement | Apr 15, 2025 | Jul 21, 2025 |
| EFFECT | Filing | Mar 28, 2025 | — |
| CORRESP | Letter to the SEC | Mar 25, 2025 | — |
| CORRESP | Letter to the SEC | Mar 25, 2025 | — |
| S-3/A | Form s-3/a | Mar 25, 2025 | — |
| 10-K | Annual report | Mar 24, 2025 | Dec 31, 2024 |
| UPLOAD | Letter from the SEC | Mar 7, 2025 | — |
| 8-K |
Current report
Listing notice
|
Feb 28, 2025 | Feb 25, 2025 |
| S-3 | Shelf registration | Feb 24, 2025 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale
|
Feb 5, 2025 | Jan 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 21, 2025 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 17, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 17, 2024 | — |
| 4 | Insider transaction | Dec 17, 2024 | Dec 15, 2024 |
| 4 | Insider transaction | Dec 17, 2024 | Dec 15, 2024 |
| 4 | Insider transaction | Dec 17, 2024 | Dec 15, 2024 |
| 4 | Insider transaction | Dec 17, 2024 | Dec 15, 2024 |
| 4 | Insider transaction | Dec 17, 2024 | Dec 15, 2024 |
| 4 | Insider transaction | Dec 17, 2024 | Dec 15, 2024 |
| 8-K |
Current report
Officer or director change
|
Dec 17, 2024 | Dec 15, 2024 |
| 3 | Initial insider ownership | Dec 16, 2024 | Dec 5, 2024 |
| 8-K |
Current report
Material agreement
|
Dec 16, 2024 | Dec 13, 2024 |
| 424B5 | Prospectus supplement | Dec 16, 2024 | — |
| 3 | Initial insider ownership | Dec 13, 2024 | Dec 5, 2024 |
| 253G3 | Form 253(g)(3) | Dec 12, 2024 | — |
| 8-K |
Current report
Agreement ended
|
Dec 12, 2024 | Dec 12, 2024 |
| 424B3 | Prospectus | Dec 12, 2024 | — |
| 8-K |
Current report
Material agreement
|
Dec 12, 2024 | Dec 10, 2024 |
| 8-K | Current report | Dec 11, 2024 | Dec 5, 2024 |
| CORRESP | Letter to the SEC | Dec 9, 2024 | — |
| UPLOAD | Letter from the SEC | Dec 3, 2024 | — |
| QUALIF | Filing | Nov 29, 2024 | — |
| 1-A POS | Filing | Nov 22, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Material agreement, Agreement ended
|
Nov 1, 2024 | Oct 28, 2024 |
| QUALIF | Filing | Oct 22, 2024 | — |
| 1-A POS | Filing | Oct 15, 2024 | — |
| 4 | Insider transaction | Sep 17, 2024 | Sep 13, 2024 |
| SC 13D | Ownership over 5% (active) | Sep 12, 2024 | — |
| 4 | Insider transaction | Sep 11, 2024 | Sep 6, 2024 |
| 3 | Initial insider ownership | Sep 11, 2024 | Aug 29, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 11, 2024 | — |
| S-8 | Employee stock plan registration | Sep 10, 2024 | — |
| 4 | Insider transaction | Sep 9, 2024 | Dec 15, 2023 |
| 4 | Insider transaction | Sep 6, 2024 | Dec 15, 2023 |
| 8-K |
Current report
Officer or director change
|
Sep 5, 2024 | Aug 14, 2024 |
| 8-K |
Current report
Listing notice, Officer or director change
|
Aug 30, 2024 | Aug 26, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Aug 14, 2024 | Aug 14, 2024 |
| 10-Q | Quarterly report | Aug 12, 2024 | Jun 30, 2024 |
| QUALIF | Filing | Aug 7, 2024 | — |
| 1-A/A | Filing | Aug 7, 2024 | — |
| CORRESP | Letter to the SEC | Aug 6, 2024 | — |
| UPLOAD | Letter from the SEC | Jul 22, 2024 | — |
| 1-A | Filing | Jul 16, 2024 | — |
| UPLOAD | Letter from the SEC | Jul 2, 2024 | — |
| DEF 14A | Proxy statement | Jun 28, 2024 | Aug 14, 2024 |
| SC 13G | Ownership over 5% (passive) | Jun 27, 2024 | — |
| PRER14A | Form prer 14a | Jun 21, 2024 | — |
| CORRESP | Letter to the SEC | Jun 21, 2024 | — |
| UPLOAD | Letter from the SEC | Jun 12, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jun 5, 2024 | Jun 4, 2024 |
| 8-K/A |
Amended current report
Acquisition or sale of assets
|
Jun 4, 2024 | Apr 22, 2024 |
| ARS | Annual report to shareholders | May 31, 2024 | Dec 31, 2023 |
| PRE 14A | Preliminary proxy statement | May 31, 2024 | Aug 14, 2024 |
| 3 | Initial insider ownership | May 21, 2024 | May 2, 2024 |
| 10-Q | Quarterly report | May 14, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Other events
|
May 7, 2024 | May 6, 2024 |
| 8-K |
Current report
Officer or director change
|
May 6, 2024 | May 2, 2024 |
| EFFECT | Filing | May 2, 2024 | — |
| CORRESP | Letter to the SEC | Apr 30, 2024 | — |
| UPLOAD | Letter from the SEC | Apr 30, 2024 | — |
| 8-K |
Current report
Material agreement
|
Apr 29, 2024 | Apr 26, 2024 |
| 424B5 | Prospectus supplement | Apr 26, 2024 | — |
| S-3 | Shelf registration | Apr 23, 2024 | — |
| 8-K |
Current report
Acquisition or sale of assets
|
Apr 23, 2024 | Apr 22, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Apr 19, 2024 | Apr 16, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 15, 2024 | — |
| 4 | Insider transaction | Apr 9, 2024 | Apr 8, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Finance Services (SIC 6199)
- Listed as
- ZSTK (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- TX
- Headquarters
- Dallas, TX
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1790169
- Former names
- Flora Growth Corp. (until Jan 27, 2026)
Other Finance Services companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.