HydroGraph Announces Upsize of Previously Announced Bought Deal Offering to C$61 Million

THE PROSPECTUS SUPPLEMENT, CORRESPONDING BASE SHELF PROSPECTUS AND ANY AMENDMENT TO THE DOCUMENTS ARE ACCESSIBLE THROUGH SEDAR+ OR WILL BE ACCESSIBLE THROUGH SEDAR+ WITHIN ONE BUSINESS DAY, AS APPLICABLE

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VANCOUVER, British Columbia, Aug. 18, 2026 (GLOBE NEWSWIRE) — HydroGraph Clean Power Inc. (CSE: HG) (OTCQB: HGRAF) (“ HydroGraph ” or the “ Company ”), a leading producer of ultra‑pure graphene, is pleased to announce that due to investor demand, it has entered into an amended agreement with Canaccord Genuity Corp., as sole underwriter and bookrunner (“ Canaccord ” or the “ Underwriter ”), to increase the size of HydroGraph’s previously announced “bought deal” public offering from C$50,000,000 to C$61,200,000 (as amended, the “ Underwritten Offering ”). Pursuant to the amended terms of the Underwritten Offering, the Underwriter has agreed to purchase, on a “bought deal” basis, an aggregate of 9,000,000 units of the Company (the “ Units ”), at a price of C$6.80 per Unit (the “ Offering Price ”).

Each Unit will consist of one common share of the Company (each, a “ Common Share ”) and one‑half (½) of one common share purchase warrant (each whole warrant, a “ Warrant ”). Each Warrant will entitle the holder thereof to acquire one Common Share at a price of C$8.16 for a period of 60 months following the Closing Date (as defined herein).

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The Company has also granted the Underwriter an option to purchase up to an additional 1,350,000 Units to cover over-allotments, if any, and for market stabilization purposes at the Offering Price for additional gross proceeds of up to C$9,180,000 (the “ Over-Allotment Option ” and together with the Underwritten Offering, the “ Offering ”). The Over-Allotment Option is exercisable, in whole or in part, for a period of 30 days after and including the Closing Date.

The net proceeds of the Offering are expected to be used for business development activities, expansion of American facilities, working capital and general corporate purposes.

The Units will be offered by way of prospectus supplement (the “ Prospectus Supplement ”) to the Company’s (final) short form base shelf prospectus dated June 24, 2026 (the “ Base Shelf Prospectus ”) to purchasers in each of the provinces and territories of Canada (other than Québec) and may also be offered by way of private placement (or equivalent basis) in the United States and such other jurisdictions as agreed between the Company and the Underwriter.

The Offering is expected to close on or about August 25, 2026 (the “ Closing Date ”), or such other date as may be agreed upon by the Company and the Underwriter.