Taseko Announces Closing of Bought Deal Financing for Gross Proceeds of US$170 Million

VANCOUVER, British Columbia, Oct. 22, 2025 (GLOBE NEWSWIRE) -- Taseko Mines Limited (TSX: TKO; NYSE American: TGB; LSE: TKO) (“Taseko” or the “Company”) is pleased to announce that it has closed its previously announced bought deal offering (the “Offering”). A total of 42,000,000 common shares (the “Common Shares”) of the Company (including 4,900,000 Common Shares issued upon the Underwriters’ partial exercise of the over-allotment option) were sold at the price of US$4.05 per Common Share for gross proceeds of US$170,100,000. The Offering was completed pursuant to an underwriting agreement dated October 17, 2025 among the Company and BMO Capital Markets and Canaccord Genuity Corp., as co-lead managers, and National Bank Financial Inc., each as joint bookrunners, and TD Securities Inc. (collectively, the “Underwriters”).

The proceeds of the Offering are anticipated to be used to repay outstanding indebtedness under the Company’s revolving credit facility and for general corporate and working capital purposes.

The Offering was completed by way of a prospectus supplement (the “Prospectus Supplement”) dated October 17, 2025 to the Company’s existing Canadian short form base shelf prospectus (the “Base Shelf Prospectus”) and related U.S. registration statement on Form F-10 (U.S. Securities and Exchange Commission (“SEC”) File No. 333-288490) (the “Registration Statement”). The U.S. form of the Base Shelf Prospectus is included in the Registration Statement. The Prospectus Supplement has been filed with the securities commissions in each of the provinces and territories of Canada, except Quebec and Nunavut, and with the SEC. The Canadian form of the Prospectus Supplement is available on the SEDAR+ website maintained by the Canadian Securities Administrators at www.sedarplus.ca. The U.S. form of the Prospectus Supplement (together with the related U.S. form of the Base Shelf Prospectus) is available on EDGAR at www.sec.gov.

For further information on Taseko, see the Company’s website at tasekomines.com or contact:

Caution Regarding Forward-Looking Information

uncertainties as to our ability to achieve reduced costs for Gibraltar and to otherwise control our operating costs without impacting our planned copper production;

our ability to draw down on our financing arrangements for the commissioning and ramp up of operations at Florence Copper is subject to our meeting the required conditions for drawdown;

the risk of inadequate insurance or inability to obtain insurance to cover our business risks;

the risk that the results from our commissioning, ramp up and initial operations of Florence Copper will not meet our estimates of operating costs, revenue, sustaining capital, rates of return and cash flows from operations which have been projected by the technical report for Florence;

the risk of commissioning and ramp up of the commercial facilities at Florence Copper, resulting in not commencing commercial production within our current projected timeline or within our current projected cost estimates;

uncertainties related to the commencement of commercial operations at Florence Copper resulting from inflation risk, supply chain disruptions, material and labour shortages or other execution risks;

the availability of, and uncertainties relating to, any additional financing necessary for the continued operation and development of our projects, including with respect to our ability to obtain any additional financing, if needed, to commence commercial operations at Florence Copper;

our ability to comply with the extensive governmental regulation to which our business is subject;

uncertainties related to unexpected judicial or regulatory proceedings;

our ability to extend existing concentrate off-take agreements or enter into new agreements;

litigation risks and the inherent uncertainty of litigation;

our ability to renegotiate our existing union agreement for Gibraltar when it expires in May 2027;

our reliance upon key personnel;

the competitive environment in which we operate;