File: Attachment FHYD - Extension of Debenture Maturity 2025-11-21 FINAL.pdf

For Immediate Release TSXV/FHYD/OTC/FHYDF/FSE/FIT

FIRST HYDROGEN ANNOUNCES INTENTION TO AMEND CONVERTIBLE DEBENTURE MATURITY DATE

VANCOUVER, BC, November 21, 2025 - First Hydrogen Corp. ("First Hydrogen" or the "Company") (TSXV: FHYD) (OTC: FHYDF) (FSE: FIT), announces it will extend the maturity date of previously issued and amended convertible debentures upto the principal amount of $2,204,425 (the "Debentures") from November 22, 2025 to November 22, 2028 (the "New Maturity Date"). The principal amount of the Debentures will continue to bear interest at a rate of 9% per annum and be convertible at a conversion price of $0.54 per common share in the capital of the Company (see news release dated July 29, 2024). Other than the New Maturity Date, no other terms of the Debentures were amended. The New Maturity Date is subject to acceptance of the TSX Venture Exchange and approval by holders of the Debentures.

Also, the Company proposes to settle up to $206,930.25 in accrued and owing interest (the "Settlement Amount") into 470,296 common shares (the "Shares") of the Company (the "Debt Settlement"). The Shares shall be issued at a deemed price of C$0.44 per Share. The Settlement Amount is payable to debenture holders (the "Debenture Holders") referenced above and 9.0% unsecured convertible debentures of the Company, the full principal balance of which was converted into shares on September 24, 2025, and October 14, 2025, these debentures were issued to the Debenture Holders on November 22, 2023.

About First Hydrogen Corp. (FirstHydrogen.com) First Hydrogen Corp. is a Vancouver, Montreal, Germany and London UK-based company focused on zero- emission vehicles, green hydrogen production and distribution. The Company has designed and built two hydrogen- fuel-cell-powered light commercial vehicles ("FCEV"). The FCEV are road-legal in the United Kingdom (excluding Northern Ireland) with 6,000 km of testing completed and have achieved a range of 630+ kilometres on a single refueling. The vehicles have successfully been trialed in real-world conditions with fleet operators in the United Kingdom.

About First Nuclear Corp. (FirstNuclear.com) First Hydrogen Corp. is committed to developing and commercializing advanced clean energy solutions, including green hydrogen produced by state-of-the-art Small Modular Reactors. The Company aims to provide scalable, sustainable, and economically viable alternatives to meet global climate goals and enhance energy security.

On behalf of the Board of Directors of

FIRST HYDROGEN CORP. "Balraj Mann" Chairman & Chief Executive Officer

Contact: Balraj Mann First Hydrogen Corp. 604-601-2018 investors@firsthydrogen.com

LEGAL_47775629.1 Cautionary Note Regarding Forward-Looking Statements This news release contains information or statements that constitute "forward-looking statements." Such forward looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements, or developments to differ materially from the anticipated results, performance or achievements expressed or implied by such forward-looking statements. Forward-looking statements are statements that are not historical facts and are generally, but not always, identified by words such as "expects," "plans," "anticipates," "believes," "intends," "estimates," "projects," "potential" and similar expressions, or that events or conditions "will," "would," "may," "could" or "should" occur. Forward looking information may include, without limitation, statements regarding the operations, business, financial condition, expected financial results, performance, prospects, opportunities, priorities, targets, goals, ongoing objectives, milestones, strategies and outlook of First Hydrogen, and includes statements about, among other things, future developments and the future operations, strengths and strategies of First Hydrogen. Forward-looking information is provided for the purpose of presenting information about management's current expectations and plans relating to the future and readers are cautioned that such statements may not be appropriate for other purposes. These statements should not be read as guarantees of future performance or results. The forward-looking statements made in this news release are based on management's assumptions and analysis and other factors that may be drawn upon by management to form conclusions and make forecasts or projections, including management's experience and assessments of historical trends, current conditions and expected future developments. Although management believes that these assumptions, analyses and assessments are reasonable at the time the statements contained in this news release are made, actual results may differ materially from those projected in any forward-looking statements. Examples of risks and factors that could cause actual results to materially differ from forward-looking statements may include: the timing and unpredictability of regulatory actions; regulatory, legislative, legal or other developments with respect to its operations or business; limited marketing and sales capabilities; early stage of the industry and product development; limited products; reliance on third parties; unfavourable publicity or consumer perception; general economic conditions and financial markets; the impact of increasing competition; the loss of key management personnel; capital requirements and liquidity; access to capital; the timing and amount of capital expenditures; the impact of COVID-19; shifts in the demand for First Hydrogen's products and the size of the market; patent law reform; patent litigation and intellectual property; conflicts of interest; and general market and economic conditions. The forward-looking information contained in this news release represents the expectations of First Hydrogen as of the date of this news release and, accordingly, is subject to change after such date. Readers should not place undue importance on forward-looking information and should not rely upon this information as of any other date. First Hydrogen undertakes no obligation to update these forward-looking statements in the event that management's beliefs, estimates or opinions, or other factors, should change. NEITHER TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICE PROVIDER (AS THAT TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE

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