NUCOR CORP Segments Disclosure

22. Segments

Nucor reports its results in the following segments: steel mills, steel products and raw materials. The steel mills segment includes carbon and alloy steel in sheet, bars, structural and plate; steel trading businesses; rebar distribution businesses; and Nucor’s equity method investment in NuMit. The steel products segment includes steel joists and joist girders, steel deck, fabricated concrete reinforcing steel, cold finished steel, precision castings, steel fasteners, metal building systems, insulated metal panels, steel grating, tubular products businesses, steel racking, piling products business, wire and wire mesh, overhead doors, and utility towers and structures. The raw materials segment includes The David J. Joseph Company and its affiliates (“DJJ”), primarily a scrap broker and processor; Nu-Iron Unlimited and Nucor Steel Louisiana LLC, two facilities that produce direct reduced iron used by the steel mills; and our natural gas production operations.

Corporate/eliminations include items such as net interest expense on long-term debt, charges and credits associated with changes in allowances to eliminate intercompany profit in inventory, profit sharing expense and stock-based compensation. Corporate assets primarily include cash and cash equivalents, short-term investments, allowances to eliminate intercompany profit in inventory, deferred income tax assets, federal and state income taxes receivable and investments in and advances to affiliates.

Segment results are regularly reviewed by the Company's Chief Operating Decision Makers ("CODMs"), the Chief Executive Officer and the Chief Operating Officer, to manage the business, make decisions about resources to be allocated to the segments and to assess performance. The measure of profit and loss that is used by the CODMs to assess segment performance and to allocate resources is earnings before income taxes and noncontrolling interests by segment (“segment earnings”). Our CODMs evaluate each segment’s performance based on metrics such as net sales, segment earnings and other key financial indicators, guiding strategic decisions to align with company-wide goals.

Segment cost of products sold is considered a significant segment expense and is regularly provided to the CODMs. Segment cost of products sold includes amounts related to both net sales to external customers and intercompany sales.

In 2025, we recast the following "results by segment" tables for the reclassification of the elimination of intrasegment sales from DJJ’s scrap processing operations to DJJ’s scrap brokerage operations. We made this change so that the presentation of other segment items for the raw materials segment would be more consistent with other segment items in the steel mills and steel products segments, which consist of other segment expenses that are not considered significant. This reclassification was applied to all periods presented and did not have an impact on segment earnings before income taxes and noncontrolling interests for the raw materials segment.