STLLR Files the NI 43-101 Technical Report for the Tower Gold Project Updated Mineral Resource Estimate and Preliminary Economic Assessment

Press Release

TORONTO, Ontario, June 30, 2025 – STLLR Gold Inc. (TSX: STLR) (OTCQX: STLRF) (FSE: 09D) (“STLLR” or the “Company”) announced the filing of a Technical Report for the updated Mineral Resource Estimate (“2025 MRE”) and Preliminary Economic Assessment (“2025 PEA”) for its 100%-owned Tower Gold Project (“Tower” or the “Project”) located in the prolific Timmins Mining Camp in Ontario, Canada (the “Technical Report”). A copy of the Technical Report is available on www.sedarplus.ca or on the Company’s website www.stllrgold.com.

The Technical Report, titled “Preliminary Economic Assessment NI 43-101 Technical Report Tower Gold Project”, was prepared by Qualified Persons in accordance with the National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”) from InnovExplo (a member of Norda Stelo), G Mining Services (“GMS”), and WSP Inc. (“WSP”). These persons have the ability and authority to verify the authenticity and validity of this data and are independent from the Company.

About STLLR Gold

STLLR Gold Inc. is a Canadian gold development company actively advancing high-potential gold projects in Canada: The Tower Gold Project and the Hollinger Tailings Project in the Timmins Mining Camp in Ontario and the Colomac Gold Project located north of Yellowknife, Northwest Territories. Tower and Colomac have the potential to become large-scale, long-life operations and are surrounded by exploration land with favourable upside potential. Hollinger has the potential for near-term value creation. STLLR’s experienced management team, with a track record of successfully advancing projects and operating mines, is working towards rapidly advancing these projects.

Contact Us

STLLR Gold Investor Relations

+1 (416) 863-2105 | investors@stllrgold.com | www.STLLRgold.com

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