Mr. Benoit Veilleux reports

CHARBONE ENGAGES US-BASED INVESTOR RELATIONS FIRM RBMG

Charbone Hydrogen Corp. has retained the U.S.-based corporate communications firm RB Milestone Group LLC (RBMG), to provide investor relations services, including corporate communications advisory, non-deal road show advisory, market intelligence advisory and business referrals to the management team of the company. RBMG has been retained for an initial term of six months starting Oct. 20, 2025, paid in cash totalling $59,500 (U.S.) and billed on a monthly basis. Following the first six months, the agreement automatically renews on a monthly basis until termination. RBMG is at arm's length to the company. The agreement is subject to regulatory approval.

Dave B. Gagnon, chief executive officer of Charbone, commented: "We are very pleased to welcome the RBMG team as a key addition to our communications and investor relations strategy in the United States and Canada. Their proven expertise in capital markets, corporate visibility and strategic advisory will play a vital role as Charbone enters its next phase of growth and expansion across North America. This collaboration reinforces our commitment to transparency, shareholder engagement and long-term value creation."

About RB Milestone Group LLC

Founded in 2009, RB Milestone Group is a U.S.-based corporate communications firm that specializes in investor relations advisory and has offices in New York and Stamford, Conn. RBMG's U.S. advisory practice delivers investor relations programs tailor-made for emerging companies that are private and publicly traded on the New York Stock Exchange, the Nasdaq Stock Market, the OTCQB, the OTCQX, the Toronto Stock Exchange, the TSX Venture Exchange, the Canadian Securities Exchange, the Australian Securities Exchange and the Alternative Investment Market. RBMG refines communications strategies, weighs data and advises clients on how to penetrate new markets. It helps clients target and secure relationships with niche U.S. stakeholders and key industry strategics globally. Utilizing digital techniques, artificial intelligence (AI) and machine learning, RBMG has developed methods that improve traditional client IR initiatives to maximize ROI (return on investment). RBMG partners with clients across a wide range of industry segments, including: cannabis, clean technology, consumer goods, crypto, fintech (financial technology), health care, metals and mining, professional services, renewable energy, and technology.

Updated terms of shares-for-debt settlement

Charbone announces an update to its previously disclosed shares-for-debt settlement dated Aug. 14, 2025. Following discussion with the TSX-V, including a review of the restrictions imposed upon shares-for-debt transactions in the context of market-making services, the company has revised the total amount and number of shares to be issued under the settlement. Under the revised terms, Charbone will settle $30,000 of the original $118,095 payable to an arm's-length market maker through the issuance of common shares. The company successfully negotiated that the remaining balance will be reduced by the value of the shares at the current market price. Upon closing, Charbone will issue 500,000 common shares. The settlement will be documented in a formal agreement and remains subject to final approval by the TSX-V. The common shares issued will be subject to the statutory four-month hold period.

About Charbone Hydrogen Corp.

Charbone is an integrated company specializing in clean ultrahigh-purity (UHP) hydrogen and the strategic distribution of industrial gases in North America and Asia Pacific. Through a modular approach, the company is building a distributed network of green hydrogen production plants while diversifying revenues through helium and specialty gas partnerships. This disciplined model reduces risk, enhances flexibility and positions Charbone as a leader in the transition to a low-carbon future. Charbone is listed on the TSX-V, the OTCQB and the Frankfurt Stock Exchange.

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