GSTX lines up $40 million convertible note offering for U.S. wafer buildout

Graphene & Solar Technologies Limited has hired US Capital Global Securities to place a proposed $40 million convertible note offering aimed at funding planned silicon wafer manufacturing in California. The financing is tied to GSTX’s push to rebuild domestic solar materials capacity and reduce reliance on imported critical inputs.

Why it matters: - GSTX is trying to finance a U.S. manufacturing push in a supply chain still heavily linked to overseas production. - The company’s plan centers on silicon wafers, a key input for solar panels and other advanced technologies. - The offering could help GSTX move from project development toward commercial production.

What happened: - Graphene & Solar Technologies Limited retained US Capital Global Securities LLC as placement agent for a proposed $40 million convertible note offering with room for oversubscription. - The financing is intended to support planned U.S. silicon wafer manufacturing and broader domestic solar materials production. - The announcement was made Aug. 20, 2026.

The details: - GSTX is building a vertically integrated platform spanning high-purity quartz, silicon, polysilicon and silicon wafers. - The company says the platform is designed to rebuild critical solar materials manufacturing capacity outside China. - GSTX plans a global network of QSM-branded manufacturing subsidiaries in the United States, Australia, New Zealand and Europe. - Through Quartz & Silicon Materials Company Limited, or QSM USA, GSTX is focusing first on a silicon wafer plant in San Diego, California. - The existing industrial facility is expected to support 10 GW of annual wafer manufacturing capacity. - QSM USA has a long-term offtake agreement with a U.S. solar manufacturer for 30% of the plant’s annual output, or 3 GW. - In June, QSM USA received a $45 million California Competes Tax Credit over five years for two planned solar materials manufacturing projects in California. - GSTX is headquartered in Phoenix and trades on the OTCID Basic Market under the symbol GSTX. - More information is available at www.quartz.rocks.

Between the lines: - The financing reflects a broader bet that domestic solar supply chains will remain a policy and investor priority. - US Capital Global Securities framed the deal as part of a strategically important effort to strengthen energy security and manufacturing resilience. - GSTX’s staged approach suggests the company is prioritizing near-term wafer output while it builds upstream partnerships for scale.

What’s next: - GSTX will look to complete the proposed note offering and advance its California wafer project. - The company also expects to keep developing upstream materials partnerships needed for long-term expansion. - Eligible investors were invited to learn more about the financing opportunity through US Capital Global Securities.