Graphene & Solar Technologies Ltd SEC filings GSTX
Graphene & Solar Technologies Ltd has 235 filings in SEC EDGAR's recent list, going back to Oct 21, 2010. Its latest annual report, Form 10-K, was filed on Feb 25, 2026 for the period ended Sep 30, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 14, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 25, 2026 (other events). The company's fiscal year ends on September 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| UPLOAD | Letter from the SEC | Apr 13, 2026 | — |
| NT 10-K | Filing | Dec 31, 2025 | Sep 30, 2025 |
| CORRESP | Letter to the SEC | Dec 31, 2025 | — |
| UPLOAD | Letter from the SEC | Sep 12, 2025 | — |
| NT 10-K | Filing | Jan 8, 2025 | Sep 30, 2024 |
| NT 10-Q | Filing | Aug 14, 2024 | Jun 30, 2024 |
| NT 10-Q | Filing | May 15, 2024 | Mar 31, 2024 |
| NT 10-Q | Filing | Feb 13, 2024 | Dec 31, 2023 |
| NT 10-K | Filing | Dec 28, 2023 | Sep 30, 2023 |
| NT 10-Q | Filing | Aug 14, 2023 | Jun 30, 2023 |
| NT 10-K | Filing | Dec 27, 2022 | Sep 30, 2022 |
| NT 10-Q | Filing | Aug 15, 2022 | Jun 30, 2022 |
| NT 10-Q | Form 12b-25 | Feb 17, 2022 | Dec 31, 2021 |
| NT 10-K | Form 12b-25 | Dec 22, 2021 | Sep 30, 2021 |
| NT 10-Q | Form 12b-25 | Aug 16, 2021 | Jun 30, 2021 |
| NT 10-Q | Form 12b-25 | Feb 17, 2021 | Dec 31, 2020 |
| NT 10-K | Form 12b-25 | Dec 29, 2020 | Sep 30, 2020 |
| NT 10-Q | Form 12b-25 | Aug 13, 2020 | Jun 30, 2020 |
| NT 10-Q | Filing | Feb 13, 2020 | Dec 31, 2019 |
| NT 10-K | Filing | Dec 27, 2019 | Sep 30, 2019 |
| UPLOAD | Letter from the SEC | Dec 26, 2019 | — |
| UPLOAD | Letter from the SEC | Dec 23, 2019 | — |
| CORRESP | Letter to the SEC | Dec 19, 2019 | — |
| UPLOAD | Letter from the SEC | Dec 17, 2019 | — |
| UPLOAD | Letter from the SEC | Nov 12, 2019 | — |
| UPLOAD | Letter from the SEC | Oct 18, 2019 | — |
| UPLOAD | Letter from the SEC | Sep 18, 2019 | — |
| NT 10-Q | Amendment nt 10-q | Aug 20, 2019 | Jun 30, 2017 |
| NT 10-Q | Filing | Aug 14, 2019 | Jun 30, 2019 |
| NT 10-Q | Filing | May 17, 2019 | May 15, 2019 |
| EFFECT | Filing | Apr 12, 2019 | — |
| CORRESP | Letter to the SEC | Apr 9, 2019 | — |
| UPLOAD | Letter from the SEC | Apr 9, 2019 | — |
| NT 10-Q | Filing | Feb 14, 2019 | Dec 31, 2018 |
| NT 10-K | Filing | Dec 31, 2018 | Sep 30, 2018 |
| NT 10-Q | Notification of late filing | Aug 13, 2018 | Jun 30, 2018 |
| NT 10-K | Filing | Dec 27, 2017 | Sep 30, 2017 |
| NT 10-Q | Form 12b-25 for march 31, 2016 10-q | May 17, 2016 | Mar 31, 2016 |
| NT 10-Q/A | Form 12b-25 for december 31, 2015 10-q amendment | Feb 11, 2016 | Dec 31, 2015 |
| NT 10-Q | Form 12b-25 for december 31, 2015 10-q | Feb 11, 2016 | Dec 31, 2015 |
| NT 10-K | Form 12b-25 for september 30, 2015 10-k | Dec 28, 2015 | Sep 30, 2015 |
| NT 10-Q | Form 12b-25 for march 31, 2015 10-q | May 18, 2015 | Mar 31, 2015 |
| NT 10-Q | Form 12b-25 for december 31, 2014 10-q | Feb 13, 2015 | Dec 31, 2014 |
| NT 10-K | 12b-25 for sept 2014 10-k | Dec 30, 2014 | Sep 30, 2014 |
| UPLOAD | Letter from the SEC | Oct 29, 2014 | — |
| CORRESP | Letter to the SEC | Oct 7, 2014 | — |
| UPLOAD | Letter from the SEC | Jul 28, 2014 | — |
| CORRESP | Letter to the SEC | Jul 3, 2014 | — |
| NT 10-Q | March 2014 10-q extension | May 16, 2014 | Mar 31, 2014 |
| CORRESP | Letter to the SEC | Apr 28, 2014 | — |
| UPLOAD | Letter from the SEC | Apr 10, 2014 | — |
| NT 10-K | 12b-25 for sept 2013 10-k | Dec 31, 2013 | Sep 30, 2013 |
| EFFECT | Filing | Oct 4, 2013 | — |
| CORRESP | Letter to the SEC | Sep 30, 2013 | — |
| EFFECT | Filing | Sep 24, 2013 | — |
| CORRESP | Letter to the SEC | Sep 18, 2013 | — |
| CORRESP | Letter to the SEC | Aug 16, 2013 | — |
| UPLOAD | Letter from the SEC | Jul 31, 2013 | — |
| CORRESP | Letter to the SEC | Jul 22, 2013 | — |
| CORRESP | Letter to the SEC | Jul 22, 2013 | — |
| UPLOAD | Letter from the SEC | Jun 28, 2013 | — |
| UPLOAD | Letter from the SEC | Jun 28, 2013 | — |
| CORRESP | Letter to the SEC | Jun 24, 2013 | — |
| CORRESP | Letter to the SEC | Jun 24, 2013 | — |
| UPLOAD | Letter from the SEC | May 6, 2013 | — |
| UPLOAD | Letter from the SEC | May 6, 2013 | — |
| UPLOAD | Letter from the SEC | Apr 23, 2013 | — |
| CORRESP | Letter to the SEC | Apr 23, 2013 | — |
| EFFECT | Filing | Mar 14, 2013 | — |
| CORRESP | Letter to the SEC | Mar 11, 2013 | — |
| CORRESP | Letter to the SEC | Feb 27, 2013 | — |
| UPLOAD | Letter from the SEC | Feb 12, 2013 | — |
| CORRESP | Letter to the SEC | Jan 31, 2013 | — |
| UPLOAD | Letter from the SEC | Nov 5, 2012 | — |
| CORRESP | Letter to the SEC | Oct 9, 2012 | — |
| D | Filing | Jun 22, 2012 | — |
| UPLOAD | Letter from the SEC | May 18, 2012 | — |
| EFFECT | Filing | Nov 14, 2011 | — |
| CORRESP | Letter to the SEC | Nov 14, 2011 | — |
| CORRESP | Letter to the SEC | Nov 14, 2011 | — |
| CORRESP | Letter to the SEC | Nov 14, 2011 | — |
| CORRESP | Letter to the SEC | Nov 14, 2011 | — |
| CORRESP | Letter to the SEC | Nov 14, 2011 | — |
| CORRESP | Letter to the SEC | Nov 10, 2011 | — |
| CORRESP | Letter to the SEC | Nov 7, 2011 | — |
| UPLOAD | Letter from the SEC | Nov 4, 2011 | — |
| CORRESP | Letter to the SEC | Oct 12, 2011 | — |
| UPLOAD | Letter from the SEC | Oct 6, 2011 | — |
| CORRESP | Letter to the SEC | Sep 15, 2011 | — |
| UPLOAD | Letter from the SEC | Aug 19, 2011 | — |
| CORRESP | Letter to the SEC | Aug 3, 2011 | — |
| UPLOAD | Letter from the SEC | Jul 20, 2011 | — |
| CORRESP | Letter to the SEC | Jun 29, 2011 | — |
| UPLOAD | Letter from the SEC | Jun 9, 2011 | — |
| D/A | Filing | Mar 21, 2011 | — |
| D | Filing | Feb 15, 2011 | — |
| D | Filing | Oct 21, 2010 | — |
Showing 97 filings. 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
- Metal Mining (SIC 1000)
- Listed as
- GSTX (OTC)
- Fiscal year ends
- September 30
- Incorporated in
- CO
- Headquarters
- Phoenix, AZ
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1497649
- Former names
- Solar Quartz Technologies Corp (until Jan 23, 2019); Vanguard Energy Corp (until Jul 13, 2017)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.