Blackrock Silver Corp. (TSX-V: BRC) (OTCQX: BKRRF) (FSE: AHZ0) is pleased to announce the receipt of an aggregate total of C$ $4,244,838.89 in cash proceeds from the exercise of 9,830,880 previously issued common share purchase warrants of the Company since July 8, 2025.

After including the common shares of the Company issued as a result of such Warrant exercises, there are a total of 325,490,026 Common Shares issued and outstanding as of the date hereof.

A total of 5,733,000 Warrants issued on August 30,2022 with an exercise price of C$0.75 per share expired unexercised on September 2, 2025.

The Company is also pleased to announce the addition of 7 drillholes to its previously announced eastern expansion drill program at its Tonopah West mineral project located in Nye and Esmeralda Counties, Nevada, United States, targeting the 1.2 kilometre Eastern Expansion zone between the DPB resource area and the eastern extent of Tonopah West (see July 21, 2025 news release). With the inclusion of the additional 7 drillholes, the Eastern Expansion Program consists of a total of 22 drillholes and up to 7,000 metres (23,000 feet) of drilling. A total of 19 drillholes have been completed to date and are pending assay results.

Andrew Pollard, Blackrock’s President and Chief Executive Officer, stated, “The C$4.24 million from warrant exercises has strengthened our treasury, positioning us to continue advancing Tonopah West aggressively towards development. Drilling on our Eastern Resource Expansion program is progressing rapidly, with 19 of 22 holes already completed. Our updated mineral resource estimate remains on track for early September 2025, aimed at upgrading a portion of the DPB-South inferred resources to higher confidence categories to help de-risk the early years of our conceptual mine plan. A further resource update, focused on extending mine life, is scheduled for Q1 2026. With a robust treasury, assays pending, and multiple mineral resource updates in view, we are well positioned to close out 2025 with strong momentum as we continue to de-risk and advance the Tonopah West project.”

Qualified Persons

Blackrock’s exploration activities at Tonopah West are conducted and supervised by Mr. William Howald, Executive Chairman of Blackrock. Mr. William Howald, AIPG Certified Professional Geologist #11041, is a Qualified Person as defined under National Instrument 43-101 – Standards of Disclosure for Mineral Projects. He has reviewed and approved the contents of this news release.

About Blackrock Silver Corp.

Backed by gold and silver ounces in the ground, Blackrock is a junior precious metal focused exploration and development company driven to add shareholder value. Anchored by a seasoned Board of Directors, the Company is focused on its 100% controlled Nevada portfolio of properties consisting of low-sulphidation, epithermal gold and silver mineralization located along the established Northern Nevada Rift in north-central Nevada and the Walker Lane trend in western Nevada.