Mr. Chris Verrico reports

RIO SILVER ANNOUNCES INCREASE TO OFFERING AMOUNT

Further to Rio Silver Inc.'s announcement on Sept. 11, 2025, regarding the intended non-brokered private placement offering of up to 13 million units of the company at a price of 10 cents per unit for gross proceeds of up to $1.3-million, subject to regulatory approval, the company confirms that the aggregate amount of the offering will be composed of 22 million units at a price of 10 cents per unit, by increasing the initial amount of the offering of 13 million units by an additional $900,000 by issuing up to an additional nine million units at 10 cents per unit.

The additional net proceeds are intended to be used for exploration and development of the company's Maria Norte gold-silver-lead-zinc project in Peru, its existing Gerow Lake project in Northern Ontario, and general working capital purposes. All other terms remain unchanged from the previous announcement. The closing of the offering remains subject to receipt of all necessary regulatory approvals, including approval by the TSX Venture Exchange.

We seek Safe Harbor.