Thunder Mountain Gold, Inc. (TSX-V: THM) (OTCQB: THMG) is pleased to announce that, further to its news release dated July 8, 2026, the Company has closed its non-brokered private placement consisting of 8,090,451 units of the Company at a price of US$0.70 (CAD$1.00) per Unit for gross proceeds of US$5,663,316 (CAD$8,090,451).

Each Unit consists of one share of the Company’s common stock and one-half of one common share purchase warrant. Each Warrant entitles the holder to purchase one additional Common Share at a price of US$1.00 (CAD$1.42) for a period of 24 months from the date of issuance.

The proceeds raised pursuant to the Private Placement will be used for advancing the South Mountain Project, including drilling, assaying, and geophysical surveys and general administration to carry out these programs.

In connection with the completion of the Private Placement, the Company paid a cash finder’s fee to four Canadian brokers in the aggregate amount of US$66,563 (CAD$94,525) and issued an aggregate of 94,089 non-transferable common share purchase warrants. Each Finder Warrant entitles the holder to acquire one Common Share at a price of US$1.00 (CAD$1.42) per Finder Warrant Share for a period of 24 months from the date of issuance.

The Private Placement remains subject to the final approval of the TSX Venture Exchange.

This news release is issued pursuant to, and in accordance with, Rule 135c under the United States Securities Act of 1933, as amended (the “U.S. Securities Act“), and shall not constitute an offer to sell or the solicitation of an offer to buy; nor shall there be any sale of these securities in any state or jurisdiction in which the offer, solicitation, or sale would be unlawful.

The securities described herein have not been, and will not be, registered under the U.S. Securities Act, or any state securities laws, and accordingly, may not be offered or sold within the United States or to “U.S. persons”, as such term is defined in Regulation S promulgated under the U.S. Securities Act, except in compliance with the registration requirements of the U.S. Securities Act and applicable state securities laws, or pursuant to exemptions therefrom. The securities issued in the Private Placement are “restricted securities” under the U.S. Securities Act. The securities issued in the Private Placement to Canadian subscribers are subject to a four-month hold period in accordance with the policies of the TSXV and applicable Canadian securities legislation.