Third Quarter of 2025 Outlook We expect earnings in the third quarter of 2025 to be nominally lower than the second quarter of 2025, due to decreased earnings in the steel mills segment and similar earnings in the steel products and raw materials segments. In the steel mills segment, despite resilient backlogs and a stable demand outlook, we expect margin compression in the third quarter of 2025 as compared to the second quarter of 2025. Earnings Conference Call An earnings call is scheduled for July 29, 2025 at 10:00 a.m. Eastern Time to review Nucor’s second quarter of 2025 financial results and provide a business update. The call can be accessed via webcast from the Investor Relations section of Nucor’s website (nucor.com/investors). A presentation with supplemental information to accompany the call has been posted to Nucor’s Investor Relations website. A playback of the webcast will be posted to the same site within one day of the live event. About Nucor Nucor and its affiliates are manufacturers of steel and steel products, with operating facilities in the United States, Canada and Mexico. Products produced include: carbon and alloy steel — in bars, beams, sheet and plate; hollow structural section tubing; electrical conduit; steel racking; steel piling; steel joists and joist Page 3 of 10 Nucor Executive Offices: 1915 Rexford Road, Charlotte, North Carolina 28211 Phone 704-366-7000 Fax 704-362-4208 www.nucor.com News Release Nucor Reports Results for the Second Quarter of 2025 (Continued) girders; steel deck; fabricated concrete reinforcing

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Text is the filed exhibit, verbatim.