First Quantum Minerals Announces Extension of the Expiration Date, Guaranteed Delivery Date and Settlement Date of Cash Tender Offer to Purchase Any and All of Its Outstanding 6.875% Senior Notes Due 2027

(In United States dollars, except where noted otherwise)

TORONTO, Aug. 06, 2025 (GLOBE NEWSWIRE) -- First Quantum Minerals Ltd. (“First Quantum” or the “Company”) (TSX: FM), in connection with the offer to purchase for cash (the “Tender Offer”) any and all of its outstanding 6.875% Senior Notes due 2027 (the “Notes”) from holders of the Notes (“Holders”), as further described in the offer to purchase (the “Offer to Purchase”) and the related Notice of Guaranteed Delivery, each dated August 6, 2025, and as previously announced on August 6, 2025, hereby announces that, following the upsizing and pricing of the New Notes (as announced separately by the Company on the date hereof), the Company is extending (i) the Price Determination Date from 2:00 p.m., New York City time, on August 12, 2025 to 2:00 p.m., New York City time, on August 18, 2025, (ii) the Expiration Date from 5:00 p.m., New York City time, on August 12, 2025 to 5:00 p.m., New York City time, on August 18, 2025, (iii) the Guaranteed Delivery Date from 5:00 p.m., New York City time, on August 14, 2025 to 5:00 p.m., New York City time, on August 20, 2025 and (iv) the expected Settlement Date from August 15, 2025 to August 21, 2025.

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