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 |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Sep 25, 2026 | Sep 21, 2026 |
| 8-K |
Current report
Other events
|
Sep 17, 2026 | Sep 16, 2026 |
| 10-Q | Quarterly report | Aug 14, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
Jun 30, 2026 | Jun 26, 2026 |
| 8-K |
Current report
Officer or director change
|
Jun 26, 2026 | Jun 21, 2026 |
| 8-K |
Current report
Material agreement, Other events
|
Jun 24, 2026 | Jun 24, 2026 |
| 10-Q | Quarterly report | May 15, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Officer or director change
|
Apr 23, 2026 | Apr 21, 2026 |
| 8-K |
Current report
Officer or director change
|
Apr 17, 2026 | Apr 14, 2026 |
| UPLOAD | Letter from the SEC | Apr 13, 2026 | — |
| 10-Q | Quarterly report | Apr 10, 2026 | Dec 31, 2025 |
| 10-K/A | Amended annual report | Mar 18, 2026 | Sep 30, 2024 |
| 10-K | Annual report | Feb 25, 2026 | Sep 30, 2025 |
| 10-K/A | Amended annual report | Feb 2, 2026 | Sep 30, 2024 |
| NT 10-K | Filing | Dec 31, 2025 | Sep 30, 2025 |
| CORRESP | Letter to the SEC | Dec 31, 2025 | — |
| 10-Q/A | Amended quarterly report | Nov 12, 2025 | Jun 30, 2025 |
| 10-Q | Quarterly report | Nov 12, 2025 | Jun 30, 2025 |
| 10-Q | Quarterly report | Oct 20, 2025 | Mar 31, 2025 |
| 10-Q | Quarterly report | Oct 20, 2025 | Dec 31, 2024 |
| UPLOAD | Letter from the SEC | Sep 12, 2025 | — |
| 10-K | Annual report | Jul 15, 2025 | Sep 30, 2024 |
| NT 10-K | Filing | Jan 8, 2025 | Sep 30, 2024 |
| 10-Q | Quarterly report | Oct 9, 2024 | Jun 30, 2024 |
| NT 10-Q | Filing | Aug 14, 2024 | Jun 30, 2024 |
| 10-Q | Quarterly report | May 24, 2024 | Mar 31, 2024 |
| NT 10-Q | Filing | May 15, 2024 | Mar 31, 2024 |
| 10-Q | Quarterly report | Mar 27, 2024 | Dec 31, 2023 |
| NT 10-Q | Filing | Feb 13, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Material agreement
|
Feb 12, 2024 | Feb 9, 2024 |
| 8-K |
Current report
Material agreement
|
Feb 9, 2024 | Feb 5, 2024 |
| 10-K | Annual report | Jan 16, 2024 | Sep 30, 2023 |
| NT 10-K | Filing | Dec 28, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Other events
|
Nov 9, 2023 | Nov 9, 2023 |
| 10-Q | Quarterly report | Sep 13, 2023 | Jun 30, 2023 |
| NT 10-Q | Filing | Aug 14, 2023 | Jun 30, 2023 |
| 10-Q | Quarterly report | Aug 4, 2023 | Mar 31, 2023 |
| 10-Q | Quarterly report | Jun 29, 2023 | Dec 31, 2022 |
| 10-K | Annual report | Apr 12, 2023 | Sep 30, 2022 |
| NT 10-K | Filing | Dec 27, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Officer or director change
|
Aug 30, 2022 | Dec 20, 2021 |
| 10-Q | Quarterly report | Aug 18, 2022 | Jun 30, 2022 |
| NT 10-Q | Filing | Aug 15, 2022 | Jun 30, 2022 |
| 10-Q | Quarterly report | Aug 4, 2022 | Mar 31, 2022 |
| 10-Q | Quarterly report | Jul 29, 2022 | Dec 31, 2021 |
| 10-K | Annual report | May 24, 2022 | Sep 30, 2021 |
| NT 10-Q | Form 12b-25 | Feb 17, 2022 | Dec 31, 2021 |
| NT 10-K | Form 12b-25 | Dec 22, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Officer or director change
|
Dec 22, 2021 | Dec 20, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 28, 2021 | Sep 27, 2021 |
| 10-Q | Quarterly report | Sep 2, 2021 | Jun 30, 2021 |
| NT 10-Q | Form 12b-25 | Aug 16, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Officer or director change, Other events
|
Jul 29, 2021 | May 6, 2021 |
| 10-Q | Quarterly report | May 27, 2021 | Mar 31, 2021 |
| 10-Q | Quarterly report | Mar 23, 2021 | Dec 31, 2020 |
| NT 10-Q | Form 12b-25 | Feb 17, 2021 | Dec 31, 2020 |
| 10-K | Annual report | Feb 17, 2021 | Sep 30, 2020 |
| NT 10-K | Form 12b-25 | Dec 29, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Other events
|
Dec 16, 2020 | Dec 15, 2020 |
| 10-Q | Quarterly report | Sep 8, 2020 | Jun 30, 2020 |
| NT 10-Q | Form 12b-25 | Aug 13, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Officer or director change
|
Jul 23, 2020 | Jul 20, 2020 |
| 10-Q | Quarterly report | Jul 16, 2020 | Mar 31, 2020 |
| 10-Q | Quarterly report | Jul 7, 2020 | Dec 31, 2019 |
| 3 | Initial insider ownership | Jun 9, 2020 | Jun 1, 2020 |
| 8-K |
Current report
Officer or director change
|
Jun 9, 2020 | Jun 1, 2020 |
| 8-K |
Current report
Auditor change
|
Jun 4, 2020 | May 7, 2020 |
| 8-K |
Current report
Other events
|
Mar 31, 2020 | Mar 28, 2020 |
| NT 10-Q | Filing | Feb 13, 2020 | Dec 31, 2019 |
| 10-K | Annual report | Jan 21, 2020 | Sep 30, 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 | — |
| 8-K |
Current report
Agreement ended, Officer or director change
|
Dec 10, 2019 | Dec 10, 2019 |
| UPLOAD | Letter from the SEC | Nov 12, 2019 | — |
| UPLOAD | Letter from the SEC | Oct 18, 2019 | — |
| 8-K |
Current report
Officer or director change
|
Sep 24, 2019 | Sep 16, 2019 |
| UPLOAD | Letter from the SEC | Sep 18, 2019 | — |
| 10-Q | Quarterly report | Sep 12, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Auditor change
|
Aug 23, 2019 | Aug 22, 2019 |
| 8-K |
Current report
Auditor change
|
Aug 20, 2019 | Aug 14, 2019 |
| NT 10-Q | Amendment nt 10-q | Aug 20, 2019 | Jun 30, 2017 |
| NT 10-Q | Filing | Aug 14, 2019 | Jun 30, 2019 |
| 10-Q | Quarterly report | May 21, 2019 | Mar 31, 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 | — |
| S-1 | Registration statement | Apr 5, 2019 | — |
| 10-Q | Quarterly report | Feb 28, 2019 | Dec 31, 2018 |
| NT 10-Q | Filing | Feb 14, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Auditor change, Other events
|
Feb 5, 2019 | Dec 14, 2018 |
| 10-K | Annual report | Jan 23, 2019 | Sep 30, 2018 |
| 8-K |
Current report
Restatement
|
Jan 22, 2019 | Sep 7, 2018 |
| 8-K |
Current report
Officer or director change
|
Jan 14, 2019 | Dec 14, 2018 |
| NT 10-K | Filing | Dec 31, 2018 | Sep 30, 2018 |
| 10-K | Annual report | Sep 7, 2018 | Sep 30, 2015 |
| 10-Q | Quarterly report | Aug 20, 2018 | Jun 30, 2018 |
| NT 10-Q | Notification of late filing | Aug 13, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Officer or director change
|
Jul 25, 2018 | Jun 19, 2018 |
| 10-Q | Quarterly report | May 22, 2018 | Mar 31, 2018 |
| 10-Q | Quarterly report | Feb 14, 2018 | Dec 31, 2017 |
| 10-Q | Quarterly report | Jan 17, 2018 | Jun 30, 2017 |
| 10-Q | Quarterly report | Jan 17, 2018 | Mar 31, 2017 |
| 10-Q | Quarterly report | Jan 17, 2018 | Dec 31, 2016 |
| 10-Q | Quarterly report | Jan 17, 2018 | Jun 30, 2016 |
| 10-Q | Quarterly report | Jan 17, 2018 | Mar 31, 2016 |
| 10-Q | Quarterly report | Jan 17, 2018 | Dec 31, 2015 |
| 10-K | Annual report | Jan 16, 2018 | Sep 30, 2017 |
| NT 10-K | Filing | Dec 27, 2017 | Sep 30, 2017 |
| 10-K | Annual report | Nov 17, 2017 | Sep 30, 2016 |
| 8-K |
Current report
Results of operations, Unregistered share sale
|
Oct 12, 2017 | Oct 10, 2017 |
| 8-K/A |
Amended current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Change in control, Officer or director change, Bylaw or fiscal year change
|
Oct 4, 2017 | Jul 1, 2017 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Change in control, Officer or director change, Bylaw or fiscal year change
|
Jul 13, 2017 | Jul 1, 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 |
| 10-Q | Quarterly report | Aug 10, 2015 | Jun 30, 2015 |
| 10-Q | Quarterly report | May 20, 2015 | Mar 31, 2015 |
| NT 10-Q | Form 12b-25 for march 31, 2015 10-q | May 18, 2015 | Mar 31, 2015 |
| 10-Q | Quarterly report | Feb 20, 2015 | Dec 31, 2014 |
| 8-K |
Current report
Officer or director change
|
Feb 13, 2015 | Feb 11, 2015 |
| NT 10-Q | Form 12b-25 for december 31, 2014 10-q | Feb 13, 2015 | Dec 31, 2014 |
| 10-K | Annual report | Jan 5, 2015 | Sep 30, 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 | — |
| 8-K/A |
Amended current report
Material agreement
|
Oct 7, 2014 | Apr 11, 2014 |
| 10-K/A | Amended annual report | Oct 6, 2014 | Sep 30, 2013 |
| 10-Q | Quarterly report | Aug 14, 2014 | Jun 30, 2014 |
| UPLOAD | Letter from the SEC | Jul 28, 2014 | — |
| CORRESP | Letter to the SEC | Jul 3, 2014 | — |
| 8-K |
Current report
Acquisition or sale of assets
|
Jun 19, 2014 | Jun 17, 2014 |
| 8-K |
Current report
Shareholder vote results, Other events
|
Jun 10, 2014 | Jun 5, 2014 |
| 10-Q/A | Amended quarterly report | May 19, 2014 | Mar 31, 2014 |
| 8-K |
Current report
Shareholder vote results
|
May 19, 2014 | May 15, 2014 |
| NT 10-Q | March 2014 10-q extension | May 16, 2014 | Mar 31, 2014 |
| 10-Q | Quarterly report | May 15, 2014 | Mar 31, 2014 |
| CORRESP | Letter to the SEC | Apr 28, 2014 | — |
| 8-K |
Current report
Material agreement
|
Apr 17, 2014 | Apr 11, 2014 |
| UPLOAD | Letter from the SEC | Apr 10, 2014 | — |
| 8-K | Current report | Apr 3, 2014 | Mar 31, 2014 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2014 | — |
| 10-Q | Quarterly report | Feb 13, 2014 | Dec 31, 2013 |
| 10-K | Annual report | Jan 3, 2014 | Sep 30, 2013 |
| 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 | — |
| S-3/A | Form s-3 amendment no. 3 | Sep 17, 2013 | — |
| CORRESP | Letter to the SEC | Aug 16, 2013 | — |
| 10-Q | Quarterly report | Aug 9, 2013 | Jun 30, 2013 |
| 8-K |
Current report
Officer or director change
|
Aug 1, 2013 | Jul 31, 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 | — |
| S-3/A | Form s-3 amend #2 | Jul 19, 2013 | — |
| POS AM | S-1 post-effect amend. #4 | Jul 9, 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 | — |
| S-3/A | Form s-3 amendment no. 1 | Jun 21, 2013 | — |
| POS AM | Post-effect amendment no. 3 | Jun 20, 2013 | — |
| POS AM | Post effect amend #2 | Jun 18, 2013 | — |
| 10-Q | Quarterly report | May 14, 2013 | Mar 31, 2013 |
| UPLOAD | Letter from the SEC | May 6, 2013 | — |
| UPLOAD | Letter from the SEC | May 6, 2013 | — |
| POS AM | Post effect amend #1 withdraw reg.stmt. | Apr 26, 2013 | — |
| UPLOAD | Letter from the SEC | Apr 23, 2013 | — |
| CORRESP | Letter to the SEC | Apr 23, 2013 | — |
| S-8 | Employee stock plan registration | Apr 12, 2013 | — |
| S-3 | Shelf registration | Apr 3, 2013 | — |
| 8-K |
Current report
Officer or director change
|
Mar 25, 2013 | Mar 22, 2013 |
| EFFECT | Filing | Mar 14, 2013 | — |
| CORRESP | Letter to the SEC | Mar 11, 2013 | — |
| CORRESP | Letter to the SEC | Feb 27, 2013 | — |
| S-1/A | Amended registration statement | Feb 27, 2013 | — |
| SC 13G | Ownership over 5% (passive) | Feb 19, 2013 | — |
| 10-Q | Quarterly report | Feb 13, 2013 | Dec 31, 2012 |
| UPLOAD | Letter from the SEC | Feb 12, 2013 | — |
| CORRESP | Letter to the SEC | Jan 31, 2013 | — |
| S-1/A | Amended registration statement | Jan 30, 2013 | — |
| 10-K | Annual report | Dec 28, 2012 | Sep 30, 2012 |
| 4 | Insider transaction | Nov 27, 2012 | Sep 28, 2012 |
| SC 13D | Ownership over 5% (active) | Nov 27, 2012 | — |
| UPLOAD | Letter from the SEC | Nov 5, 2012 | — |
| CORRESP | Letter to the SEC | Oct 9, 2012 | — |
| S-1/A | Amended registration statement | Oct 9, 2012 | — |
| 8-K |
Current report
Shareholder vote results
|
Sep 20, 2012 | Sep 13, 2012 |
| 8-K |
Current report
Unregistered share sale
|
Sep 5, 2012 | Aug 31, 2012 |
| 8-K |
Current report
Other events
|
Aug 14, 2012 | Aug 14, 2012 |
| 10-Q | Quarterly report | Aug 14, 2012 | Jun 30, 2012 |
| 8-K |
Current report
Unregistered share sale
|
Aug 6, 2012 | Jul 31, 2012 |
| 8-K/A |
Amended current report
Unregistered share sale, Regulation FD disclosure
|
Jul 9, 2012 | Jun 29, 2012 |
| 8-K |
Current report
Unregistered share sale, Regulation FD disclosure
|
Jul 6, 2012 | Jun 29, 2012 |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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.