POSCO announces pricing results of its Offer to Purchase for cash up to US$400,000,000 aggregate principal amount of its outstanding 5.750% Notes due 2028

SEOUL, South Korea, July 16, 2026 /PRNewswire/ -- POSCO, a corporation organized under the laws of the Republic of Korea (the "Offeror"), today announced the pricing results in connection with its offer to purchase for cash up to US$400,000,000 aggregate principal amount (the "Maximum Acceptance Amount") of its outstanding 5.750% Notes due 2028 (CUSIP: 73730EAD5 (144A) / Y7S272AG7 (Reg S) ISIN: US73730EAD58 (144A) / USY7S272AG74 (Reg S)) (the "Notes") issued by the Offeror, from the Noteholders (the "Offer"). The Offer commenced on June 30, 2026 and is being made pursuant to an Offer to Purchase dated June 30, 2026 (the "Offer to Purchase"), which is available on the offer to purchase website at https://clients.dfkingltd.com/posco. Capitalized terms used but not defined herein have the meanings assigned to them in the Offer to Purchase.