Note 1. Description of the Business and Significant Accounting Policies

Description of the Business

Steel Dynamics, Inc. (SDI), together with its subsidiaries (the company), is a leading industrial metals solutions company, with facilities located throughout the United States and Mexico. SDI is one of the largest domestic steel producers and metal recyclers in North America, combined with meaningful downstream steel fabrication operations. The company has also recently added aluminum operations, further diversifying its product offerings to supply aluminum flat rolled products with higher recycled content to the countercyclical sustainable beverage can industry, in addition to the automotive and industrial sectors. The company has four reporting segments: steel operations, metals recycling operations, steel fabrication operations, and aluminum operations.

Steel Operations Segment. Steel operations include the company’s electric arc furnace (EAF) steel mills, including Butler Flat Roll Division, Columbus Flat Roll Division, Southwest-Sinton Flat Roll Division, Structural and Rail Division, Engineered Bar Products Division, and Roanoke Bar Division; steel coating and processing operations at Steel of West Virigina, The Techs, Heartland Flat Roll Division, United Steel Supply (“USS”), New Process Steel, L.P. (“NPS”), and Vulcan Threaded Products, Inc.; warehouse operations in Mexico; and SDI Biocarbon Solutions, LLC. Effective June 19, 2026, SDI’s ownership in SDI Biocarbon Solutions, LLC increased to 100%.

Metals Recycling Operations Segment. Metals recycling operations include the company’s Omni ferrous and nonferrous processing, transportation, marketing, brokerage, and scrap management services primarily located throughout the United States (US), and in Central and Northern Mexico.

Steel Fabrication Operations Segment. Steel fabrication operations include the company’s New Millennium Building Systems joist and deck plants located throughout the US, and in Northern Mexico. Revenues from these plants are generated from the fabrication of steel joists, joist girders and steel deck systems used within the non-residential construction industry.

Aluminum Operations Segment. Aluminum operations include a 650,000-metric-ton recycled aluminum flat rolled products mill located in Columbus, Mississippi; two 150,000-metric-ton satellite recycled aluminum slab centers, one in Central Mexico and one planned for construction in Columbus, Mississippi; and an ancillary recycled aluminum deox-rod facility. The flat rolled products mill is a joint venture, of which SDI has a 94.4% equity interest, with Unity Aluminum, Inc.

Other. Other operations consist of subsidiary operations that are below the company’s quantitative thresholds required for reportable segments and primarily consists of a joint venture and the company’s idled Minnesota ironmaking operations. Also included in “Other” are certain unallocated corporate accounts, such as the company’s senior unsecured credit facility, senior notes, certain other investments and certain profit sharing expenses.

Significant Accounting Policies

Principles of Consolidation

The consolidated financial statements include the accounts of SDI, together with its wholly- and majority-owned or controlled subsidiaries, after elimination of intercompany accounts and transactions. Noncontrolling and redeemable noncontrolling interests represent the noncontrolling owners’ proportionate share in the equity, income, or losses of the company’s majority-owned or controlled consolidated subsidiaries. Redeemable noncontrolling interests related to USS (owned 95% by SDI) are $32.0 million at June 30, 2026 and $30.0 million at December 31, 2025. Redeemable noncontrolling interests related to Mesabi Nugget (owned 86% by SDI) are $111.2 million at June 30, 2026 and December 31, 2025.

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Note 1. Description of the Business and Significant Accounting Policies (continued)

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Use of Estimates

These consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States, and accordingly, include amounts that require management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and in the notes thereto. Actual results may differ from these estimates and assumptions.

In the opinion of management, these financial statements reflect all normal recurring adjustments necessary for a fair presentation of the interim period results. These consolidated financial statements and notes should be read in conjunction with the audited financial statements and notes thereto included in the company’s Annual Report on Form 10-K for the year ended December 31, 2025.

Cash, Cash Equivalents, and Restricted Cash

Cash and cash equivalents include all highly liquid investments with a maturity of three months or less at the date of acquisition. Restricted cash is primarily funds held in escrow as required by various insurance and government organizations. The balance of cash, cash equivalents, and restricted cash in the consolidated statements of cash flows includes restricted cash of $5.3 million at June 30, 2026, $5.2 million at March 31, 2026, $5.4 million at December 31, 2025, $5.2 million at June 30, 2025 and March 31, 2025, and $5.5 million at December 31, 2024, which are recorded in Other Assets (noncurrent) in the company’s consolidated balance sheets.

Goodwill

The company’s goodwill consisted of the following at June 30, 2026, and December 31, 2025 (in thousands):

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Credit Losses

The company is exposed to credit risk in the event of nonpayment of accounts receivable by customers. The company mitigates its exposure to credit risk, which it generally extends on an unsecured basis, by performing ongoing credit evaluations and taking further action if necessary, such as requiring letters of credit or other security interests to support the customer receivable. The allowance for credit losses for accounts receivable is based on the company’s reasonable estimate of known credit risks and historical experience. Customer accounts receivable are written off when all collection efforts have been exhausted and the amounts are deemed uncollectible.

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At June 30, 2026, the company reported $2,442.9 million of accounts receivable, net of allowances for credit losses of $4.5 million. Changes in the allowance were not material for each of the three and six-month periods ended June 30, 2026 and 2025.

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Note 1. Description of the Business and Significant Accounting Policies (continued)

Derivative Financial Instruments

The company routinely enters into exchange traded futures to manage price risk associated with nonferrous metal inventory, as well as purchases and sales of nonferrous (primarily aluminum and copper) and ferrous metals, to reduce exposure to commodity related price fluctuations. These exchange traded futures contracts meet the definition of derivative financial instruments. The company does not enter into these derivative financial instruments for speculative purposes. The company recognizes all derivatives as either assets or liabilities in the consolidated balance sheets and measures those instruments at fair value. Derivatives that are not designated as cash flow hedges must be adjusted to fair value through earnings. For the effective fair value hedges, the hedged item is recognized on the balance sheet at fair value. Changes in the fair value of the hedged balance sheet item are recognized as an offset against the change in fair value of the derivative in cost of goods sold and included in cash flows from operations. The ineffective portion of a derivative’s change in fair value is immediately recognized in earnings for fair value hedges. Changes in the fair value of cash flow hedges are recognized in other comprehensive income, until the hedged item is recognized in earnings.

The company offsets fair value amounts recognized for derivative instruments executed with the same counterparty under master netting agreements. The fair value of the company’s derivative instruments and required margin deposit amounts totaled $81.8 million and $56.2 million at June 30, 2026 and December 31, 2025, respectively, including required margin deposits of $17.9 million and $112.2 million at June 30, 2026 and December 31, 2025, respectively, which are reflected in other current assets in the consolidated balance sheets. The fair value of the derivative instruments is disclosed in Note 6. Fair Value Measurements. Total gains and losses related to derivatives in fair value hedging relationships, as well as those not designated as hedging instruments, are recognized in costs of goods sold. The company recognized losses of $98.7 million and gains of $4.7 million for the three-month periods ending June 30, 2026 and 2025, respectively, and losses of $159.5 million and $27.6 million for the six-month periods ending June 30, 2026 and 2025, respectively. Derivatives accounted for as cash flow hedges, for which gains and losses are recognized in other comprehensive income, along with net amounts reclassified from accumulated other comprehensive income, were insignificant for each of the three and six-month periods ended June 30, 2026 and 2025.

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Recently Issued Not Yet Adopted Accounting Pronouncements

In November 2024, the FASB issued ASU 2024-03, Income Statement Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, requiring public entities to disclose additional information about specific expense categories in the notes to the financial statements on an interim and annual basis. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of adopting ASU 2024-03.