SILVER X MINING ANNOUNCES NON-BROKERED LIFE PRIVATE PLACEMENT CONCURRENT WITH BOUGHT DEAL LIFE OFFERING FOR AGGREGATE GROSS PROCEEDS OF UP TO C$21.5 MILLION

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

Vancouver, British Columbia, September 15, 2025 – Silver X Mining Corp. (TSX-V: AGX) (OTCQB: AGXPF) (F: AGX) (“Silver X” or the “Company“) is pleased to announce that further to the Company’s press release dated September 11 and September 12, 2025 and as a result of strong investor demand, the Company is proceeding with a non-brokered private placement (the “Non-Brokered Offering”) for the sale of a minimum of 6,000,000 units of the Company (each, a “Unit”) to a maximum of 11,000,000 Units at a price of C$0.50 per Unit (the “Offering Price”) for minimum gross proceeds of C$3,000,000 to maximum gross proceeds of C$5,500,000. Red Cloud Securities Inc. (“Red Cloud”) and Laurentian Bank Securities Inc. (“LBS”) are acting as finders for the Company in connection with the Non-Brokered Offering.

The Non-Brokered Offering is being completed concurrent with the Company’s previously announced “bought deal” private placement (the “Brokered Offering”, and collectively with the Non-Brokered Offering, the “Offerings”) for gross proceeds of C$13,000,000 from the sale of 26,000,000 Units at the Offering Price. Red Cloud, as lead underwriter, and Laurentian Bank Securities (collectively with Red Cloud, the “Underwriters”) are acting as underwriters in connection with the Brokered Offering. The Company will grant to the Underwriters an option, exercisable up to 48 hours prior to the closing date of the Brokered Offering, to purchase for resale up to an additional 6,000,000 Units at the Offering Price to raise up additional gross proceeds of up to C$3,000,000 (the “Over-Allotment Option”). In the event that the Company sells the maximum number of Units issuable under the Offerings, which includes the exercise in full of the Over-Allotment Option, the Company would raise aggregate gross proceeds of C$21.5 million.

Each Unit will consist of one common share of the Company (each, a “Common Share”) and one-half Common Share purchase warrant (each, a “Warrant”). Each whole Warrant shall entitle the holder to purchase one Common Share (each, a “Warrant Share”) at a price of C$0.70 at any time on or before that date which is 36 months after the closing date of the Offerings.

The Company intends to use the net proceeds from the Offerings for capital and exploration expenditures related to the Company’s operations in the Nueva Recuperada Silver District in Peru as well as for working capital and general corporate purposes.

Subject to compliance with applicable regulatory requirements and in accordance with National Instrument 45-106 – Prospectus Exemptions (“NI 45-106”), the Units under the Non-Brokered Offering will be offered for sale to purchasers resident in all of the provinces of Canada except Québec pursuant to the listed issuer financing exemption under Part 5A of NI 45-106, as amended by Coordinated Blanket Order 45-935 – Exemptions from Certain Conditions of the Listed Issuer Financing Exemption (the “Listed Issuer Financing Exemption”). The Unit Shares and the Warrant Shares underlying the Units are expected to be immediately freely tradeable in accordance with applicable Canadian securities legislation if sold to purchasers resident in Canada. The Units may also be sold in offshore jurisdictions and in the United States on a private placement basis pursuant to one or more exemptions from the registration requirements of the United States Securities Act of 1933, as amended (the “U.S. Securities Act”). All securities not issued pursuant to the Listed Issuer Financing Exemption will be subject to a hold period in accordance with applicable Canadian securities law, expiring four months and one day following the closing date of the Non-Brokered Offering.

The Offerings are scheduled to close on September 29, 2025 (the “Closing Date”), or such other date as the Company and Red Cloud may agree. Completion of the Offerings are subject to certain conditions including, but not limited to the receipt of all necessary approvals, including the approval of the TSX Venture Exchange.

There is an amended and restated offering document (the “Amended Offering Document”) related to the Offerings that can be accessed under the Company’s profile at www.sedarplus.ca and on the Company’s website at www.silverxmining.com. Prospective investors should read this Amended Offering Document before making an investment decision.

This news release does not constitute an offer to sell or solicitation of an offer to sell any securities in the United States. The securities have not been and will not be registered under the U.S. Securities Act, as amended or any state securities laws and may not be offered or sold within the United States or to U.S. Persons unless registered under the U.S. Securities Act and applicable state securities laws or an exemption from such registration is available.