Private Placement of US$10 Million into GMG

Brisbane, Queensland, Australia--(Newsfile Corp. - September 22, 2026) - Graphene Manufacturing Group Ltd. (TSXV: GMG) (OTCQX: GMGMF) ("GMG" or the "Company") is pleased to announce that it has entered into a subscription agreement (the "Agreement") with a private investor (the "Subscriber"), pursuant to which the Subscriber has agreed to subscribe for 6,465,336 ordinary shares ("Ordinary Shares") of the Company at a price of CA$2.15 per Ordinary Share for total gross proceeds to the Company of approximately US$10,000,000 (the "Private Placement"), subject to the approval of the TSX Venture Exchange (the "Exchange").

Private Placement Details The Private Placement remains subject to the approval of the Exchange. The Company intends to use the net proceeds of the Private Placement for scale-up of graphene production and liquid graphene production capacity, scale-up of battery cell production capacity, commercialisation of liquid graphene products, working capital and general corporate purposes. The Private Placement is expected to close on or about September 23, 2026 (the "Closing Date"), or such other date(s) as the Company and the Subscriber may agree, subject to the receipt of all required regulatory and Exchange approvals. The Company will issue a further news release confirming the material details of the Private Placement upon closing, as required by TSXV Policy 4.1. No finder's fees or commissions are payable in connection with the Private Placement.

The securities described above will be issued in a private placement pursuant to Section 4(a)(2) of the Securities Act of 1933, as amended (the "Securities Act"), and Regulation D promulgated thereunder, and will not been registered under the Securities Act or applicable securities laws of any state of the United States. Accordingly, the securities may not be offered or sold in the United States except pursuant to an effective registration statement or an applicable exemption from the registration requirements of the Securities Act and such applicable securities laws of any state of the United States. The Ordinary Shares issued under the Private Placement will also be subject to on-sale restrictions in Australia for a period of 12 months from the date of issue.

This press release does not constitute an offer to sell or a solicitation of an offer to buy the securities in this offering, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state or other jurisdiction.

Craig Nicol , Chief Executive Officer and Managing Director of the Company, commented: "We are very pleased to welcome this US$10 million investment which further validates our products and business model and allows for significant production expansion to allow for expected sales in the near term of liquid graphene products and progress our next generation graphene battery."

Jack Perkowski , Non-Executive Chairman and Director of the Company, commented: "This investment will allow for the continued execution of GMG's global growth strategy. Securing a significant capital commitment is a strong vote of confidence in our technology and our team. North America remains a key market for GMG, and this additional investment positions us well to scale production and drive long-term adoption of our graphene-enhanced products across the region."

About GMG GMG is an Australian based clean-technology company which develops, makes and sells energy saving and energy storage solutions, enabled by graphene manufactured via in house production process. GMG uses its own proprietary production process to decompose natural gas (i.e. methane) into its natural elements, carbon (as graphene), hydrogen and some residual hydrocarbon gases. This process produces high quality, low cost, scalable, 'tuneable' and low/no contaminant graphene suitable for use in clean-technology and o...