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Graphene & Solar Technologies Ltd

NYSE:GSTX
US$0.086Close 7 Oct 2026 · delayed

Past year: ▲ 28567%(0.03c – 10.0c USD)

Market cap
A$90.0m
Shares on issue
740m
Story beats
12 since 2012
Last event
24 June 2026

Announcements, explained

Each one in plain English, with the numbers worked through for a shareholder.

24 June 2026material agreement● NeutralMajor

GSTX's subsidiary Quartz & Silicon Materials Company (QSM USA) was awarded a $45 million California Competes Tax Credit over five years to support planned silicon ingot and wafer manufacturing projects - a real state incentive, but one earned only against future California tax liability and tied to investment/job milestones the company has not yet shown it can fund, given its history of unfunded MOUs and years of losses.

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12 Feb 2024material agreement● NeutralMajor

Three days later, GSTX signed a second non-binding MOU, this time with American Solar Manufacturing Company, to form a joint venture (75% GSTX / 25% ASMC) to manufacture silicon wafers, with GSTX committing to fund $10 million in working capital - a large sum relative to a company that has reported no meaningful revenue and routine annual losses for years.

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9 Feb 2024material agreement● NeutralMajor

Signed a non-binding memorandum of understanding with New Zealand's Henosis Limited over buying its shareholding in Ausquartz Group Holdings, which tests, develops and produces high-purity quartz sand and crucibles for solar and semiconductor wafer making. The parties gave themselves 90 days to reach a definitive agreement; no price, structure or funding source is stated.

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4 June 2020auditor change▼ Bad

The company dismissed Pinnacle (whose fiscal-2019 audit report had flagged going-concern doubt) and engaged M&K CPAS as its fourth auditor since the 2017 reverse merger.

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23 Aug 2019auditor change● Neutral

Three days after its prior auditor's alarming resignation, the company engaged Pinnacle Accountancy Group of Utah as its new auditor.

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20 Aug 2019auditor change▼ BadMajor

Farber Hass Hurley resigned as auditor after just seven months, citing "inconsistent and incomplete information" and a lack of support for transactions involving the company, its subsidiary and an affiliate - it could not even complete its review of the June 2019 quarter.

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5 Feb 2019auditor change● NeutralMajor

The company engaged Farber Hass Hurley LLP as its new auditor and completed another name change and ticker swap, from Solar Quartz Technologies to Graphene & Solar Technologies Limited (GSTX) - its second rebrand in under two years.

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22 Jan 2019financial restatement▼ BadMajor

New management (in place since the 2017 reverse merger) discovered a fiscal-2015 annual report had never actually been filed, and when it was finally filed in 2018 it was never sent to the outside auditors for required review - the company disclosed that report should not be relied upon.

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12 Oct 2017capital raising announcement● NeutralMajor

Newly renamed SQTX detailed plans for a small private placement (up to $1.5 million) and a much larger future $150 million capital raise to build high-purity-quartz-sand factories in Australia and Texas - ambitious plans for a company whose own books showed just $66 in total assets against $286,500 in liabilities.

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13 July 2017business combination● NeutralMajor

After three years as a dormant, asset-less shell, Vanguard Energy acquired all of Solar Quartz Technology Limited (a New Zealand holding company for high-purity-quartz mining rights in Queensland, Australia) for 213.4 million shares - nominally valued at "$530 million" in the filing, though the shell had essentially no real assets to back that figure - and renamed itself Solar Quartz Technologies Corporation (SQTX).

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7 Oct 2014material agreement● Neutral

Vanguard Energy filed an amended report on the April/June 2014 asset sale, attaching the purchase agreement exhibit without disclosing anything new.

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19 June 2014asset acquisition disposition● NeutralMajor

The $5.5 million asset sale closed; Vanguard Energy used the proceeds to buy out a net profits interest from Vanguard Net Profits, LLC and pay off its noteholders, resolving the debt crisis but leaving the company with essentially no operating assets.

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17 Apr 2014material agreement▼ BadMajor

Weeks after missing its note interest payment, Vanguard Energy agreed to sell substantially all of its assets to an unrelated buyer for $5.5 million, subject to shareholder and note holder approval.

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3 Apr 2014debt default or forbearance▼ BadMajor

Vanguard Energy missed the 31 March 2014 interest payment on its $8.25 million of 15% secured convertible notes ($5.18 million sold for cash in 2012 and $3.08 million swapped out of its 2010 notes), entitling holders to declare a default and call the whole amount, principal and unpaid interest, immediately due.

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5 Sept 2012capital raising announcement● Neutral

Vanguard Energy's note-selling program continued: cumulative sales reached $5.18 million for cash plus $3.08 million exchanged for 2010-vintage notes (now down to a $325,000 balance), placed through Northland Capital Markets, MLV & Co and GVC Capital.

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6 Aug 2012capital raising announcement● Neutral

Vanguard Energy sold more of the same secured convertible notes: $3.8 million for cash plus $3.05 million exchanged for notes originally sold in 2010, paying down that older note balance to $350,000.

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6 July 2012capital raising announcement● NeutralMajor

As Vanguard Energy Corporation (an operating Houston oil and gas company, years before its later pivot to quartz/solar), the company sold $5.91 million of 15%-interest secured convertible notes to private investors, maturing 2015 and convertible at $1.25/share.

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