{"url_path":"/sec/stld/10-k/2026/item-16","section_key":"item-16","section_title":"Item 16 FORM 10-K SUMMARY","topic":"sec","document":{"doc_type":"10-K","doc_date":"2026-02-27","source_url":"https://www.sec.gov/Archives/edgar/data/1022671/0001104659-26-021395-index.html","accession_number":"0001104659-26-021395","cik":"0001022671","ticker":"STLD","issuer_name":"STEEL DYNAMICS INC","edgar_url":"https://www.sec.gov/Archives/edgar/data/1022671/0001104659-26-021395-index.html","primary_entity_key":"0001022671","primary_entity_name":"STEEL DYNAMICS INC"},"word_count":1835,"has_tables":true,"body_markdown":"ITEM 16.       FORM 10-K SUMMARY\n\nNone.\n\n​\n\n86\n\n[Table of Contents](#TOC)\n\nEXHIBIT INDEX\n\n​\n\n**Articles of Incorporation**\n\n​\n\n​\n\n​\n\n​\n\n3.1\n\n[Amended and Restated Articles of Incorporation of Steel Dynamics, Inc., reflecting all amendments thereto through May 11, 2023, incorporated herein by reference from Exhibit 3.1 to our Form 10-Q filed August 8, 2023 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000155837023013968/stld-20230630xex3d1.htm)\n\n​\n\n​\n\n3.2\n\n[Amended and Restated Bylaws of Steel Dynamics, Inc., reflecting all amendments thereto through January 31, 2024, incorporated herein by reference from Exhibit 3.2 to our Form 10-K filed February 29, 2024 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000155837024002152/stld-20231231xex3d2.htm)\n\n​\n\n​\n\n**Instruments Defining the Rights of Security Holders, Including Indentures**\n\n​\n\n​\n\n4.1\n\n[Description of Common Stock, incorporated herein by reference from Exhibit 4.1 to our Form 10-K filed February 27, 2020 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000155837020001641/ex-4d1.htm)\n\n​\n\n​\n\n4.31\n\n[Indenture dated December 4, 2019, among Steel Dynamics, Inc., as Issuer, and Wells Fargo Bank, National Association, as Trustee, incorporated herein by reference from Exhibit 4.1 to our Registration Statement on Form S-3 filed December 4, 2019 (File No.: 333-235343).](https://www.sec.gov/Archives/edgar/data/1022671/000110465919069748/a19-24378_1ex4d1.htm)\n\n​\n\n​\n\n4.32\n\n[First Supplemental Indenture, dated as of December 11, 2019, relating to our issuance of $600 million 3.450% Notes due 2030 among Steel Dynamics, Inc., as Issuer, and Wells Fargo Bank, National Association, as Trustee, incorporated herein by reference from Exhibit 4.2 to our Form 8-K filed December 11, 2019 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465919071897/tm1924646d4_ex4-2.htm)\n\n​\n\n​\n\n4.34\n\n[Form of 3.450% Notes due 2030 (included in Exhibit 4.32), incorporated herein by reference from Exhibit 4.4 to our Form 8-K filed December 11, 2019 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465919071897/tm1924646d4_ex4-2.htm)\n\n​\n\n​\n\n4.35\n\n[Second Supplemental Indenture, dated as of June 5, 2020, relating to our issuance of $500 million 3.250% Notes due 2031, between Steel Dynamics, Inc. and Wells Fargo Bank, National Association, as Trustee, incorporated herein by reference from Exhibit 4.2 to our Form 8-K filed June 5, 2020 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465920070271/tm2021405d4_ex4-2.htm)\n\n​\n\n​\n\n4.37\n\n[Form of 3.250% Notes due 2031 (included in Exhibit 4.35), incorporated herein by reference from Exhibit 4.4 to our Form 8-K filed June 5, 2020 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465920070271/tm2021405d4_ex4-2.htm)\n\n​\n\n​\n\n4.38\n\n[Third Supplemental Indenture, dated as of October 9, 2020, relating to our issuance of $350 million 1.650% Notes due 2027 and $400 million 3.250% Notes due 2050, between Steel Dynamics, Inc. and Wells Fargo Bank, National Association, as Trustee, incorporated herein by reference from Exhibit 4.2 to our Form 8-K filed October 9, 2020 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465920113839/tm2032546d4_ex4-2.htm)\n\n​\n\n​\n\n4.39\n\n[Form of 1.650% Notes due 2027 (included in Exhibit 4.38), incorporated herein by reference from Exhibit 4.3 to our Form 8-K filed October 9, 2020 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465920113839/tm2032546d4_ex4-2.htm)\n\n​\n\n​\n\n4.40\n\n[Form of 3.250% Notes due 2050 (included in Exhibit 4.38), incorporated herein by reference from Exhibit 4.4 to our Form 8-K filed October 9, 2020 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465920113839/tm2032546d4_ex4-2.htm)\n\n​\n\n​\n\n4.41\n\n[Indenture, dated as of December 7, 2022, between Steel Dynamics, Inc., as Issuer, and U.S. Bank Trust Company, National Association, as Trustee, incorporated herein by reference from Exhibit 4.1 to our Registration Statement on Form S-3 filed December 7, 2022 (File No.: 333-268703).](https://www.sec.gov/Archives/edgar/data/1022671/000110465922125219/tm2231991d2_ex4-1.htm)\n\n87\n\n[Table of Contents](#TOC)\n\n​\n\n​\n\n4.42\n\n[First Supplemental Indenture, dated as of July 3, 2024, relating to our issuance of $600 million 5.375% Notes due 2034, between Steel Dynamics, Inc. and U.S. Bank Trust Company, National Association, as Trustee, incorporated herein by reference from Exhibit 4.2 to our Form 8-K filed July 5, 2024 (File No. 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465924078017/tm2418907d1_ex4-2.htm)\n\n​\n\n​\n\n4.43\n\n[Form of 5.375% Notes due 2034 (included in Exhibit 4.42), incorporated herein by reference from Exhibit 4.3 to our Form 8-K filed July 5, 2024 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465924078017/tm2418907d1_ex4-2.htm)\n\n​\n\n​\n\n4.44\n\n[Second Supplemental Indenture, dated as of March 12, 2025, relating to our issuance of $750 million 5.250% Notes due 2035 and $400 million 5.750% Notes due 2055, between Steel Dynamics, Inc. and U.S. Bank Trust Company, National Association, as Trustee, incorporated herein by reference from Exhibit 4.2 to our Form 8-K filed March 12, 2025 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465925022903/tm257874d4_ex4-2.htm)\n\n​\n\n​\n\n4.45\n\n[Form of 5.250% Notes due 2035 (included in Exhibit 4.44), incorporated herein by reference from Exhibit 4.3 to our Form 8-K filed March 12, 2025 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465925022903/tm257874d4_ex4-2.htm)\n\n​\n\n​\n\n4.46\n\n[Form of 5.750% Notes due 2055 (included in Exhibit 4.44), incorporated herein by reference from Exhibit 4.4 to our Form 8-K filed March 12, 2025 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465925022903/tm257874d4_ex4-2.htm)\n\n​\n\n​\n\n4.47\n\n[Third Supplemental Indenture, dated as of November 21, 2025, related to our issuance of $650 million 4.000% Notes due 2028, between Steel Dynamics, Inc. and U.S. Bank Trust Company, National Association, as Trustee, incorporated herein by reference from Exhibit 4.3 to our Form 8-K filed November 21, 2025 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465925114956/tm2531907d1_ex4-3.htm)\n\n​\n\n​\n\n4.48\n\n[Form of 4.000% Notes due 2028 (included in Exhibit 4.47), incorporated herein by reference from Exhibit 4.4 to our Form 8-K filed November 21, 2025 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465925114956/tm2531907d1_ex4-3.htm)\n\n​\n\n​\n\n**Material Contracts**\n\n​\n\n​\n\n10.20†\n\n[Steel Dynamics, Inc., Change in Control Benefit Plan, incorporated herein by reference from our Exhibit 10.20 to our 8-K filed December 4, 2012 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465912081791/a12-28484_2ex10d20.htm)\n\n​\n\n​\n\n10.61†\n\n[2018 Executive Incentive Compensation Plan, approved by stockholders on May 17, 2018, incorporated herein by reference from our Definitive Proxy Statement on Schedule 14A filed March 28, 2018 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000104746918002209/a2235065zdef14a.htm)\n\n​\n\n​\n\n10.62\n\n[Credit Agreement dated as of July 19, 2023, among Steel Dynamics, Inc. and the agents and lenders named therein, incorporated herein by reference from Exhibit 10.62 to our Form 8-K filed July 21, 2023 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000110465923082924/tm2321771d1_10-62.htm)\n\n​\n\n​\n\n10.63†\n\n[Steel Dynamics, Inc. 2023 Equity Incentive Plan, approved by stockholders on May 11, 2023, incorporated herein by reference from our Definitive Proxy Statement on Schedule 14A filed March 30, 2023 (File No.: 000-21719).](https://www.sec.gov/ix?doc=/Archives/edgar/data/1022671/000110465923039039/tm231847d2_def14a.htm)\n\n​\n\n​\n\n10.64†\n\n[Steel Dynamics, Inc. 2024 Employee Stock Purchase Plan, approved by stockholders on May 9, 2024, incorporated herein by reference from our Definitive Proxy Statement on Schedule 14A filed March 28, 2024 (File No.: 000-21719).](https://www.sec.gov/ix?doc=/Archives/edgar/data/1022671/000110465924040422/tm242683d2_def14a.htm)\n\n​\n\n​\n\n​\n\n88\n\n[Table of Contents](#TOC)\n\n**Other**\n\n​\n\n​\n\n19.1\n\n[Policy Regarding Insider Trading and Certain Prohibited Transactions, incorporated herein by reference from Exhibit 19.1 to our Form 10-K filed February 28, 2025 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000155837025001886/stld-20241231xex19d1.htm)\n\n​\n\n​\n\n21.1*\n\n[List of our Subsidiaries.](stld-20251231xex21.htm)\n\n​\n\n​\n\n23.1*\n\n[Consent of Ernst & Young LLP.](stld-20251231xex23.htm)\n\n​\n\n​\n\n24.1\n\n[Powers of attorney (see signature pages on pages 90 and 91 of this Report).](#POWEROFATTORNEY_980144)\n\n​\n\n​\n\n97.1\n\n[Policy on Recoupment of Executive Officer Incentive-Based Compensation In the Event of Restatements, incorporated herein by reference from Exhibit 97.1 to our Form 10-K filed February 29, 2024 (File No.: 000-21719).](https://www.sec.gov/Archives/edgar/data/1022671/000155837024002152/stld-20231231xex97d1.htm#Exhibit:https://www.sec.gov/Archives/edgar/data/1022671/000155837024002152/stld-20231231xex97d1.htm)\n\n​\n\n​\n\n**Executive Officer Certifications**\n\n​\n\n​\n\n31.1*\n\n[Certification of Chief Executive Officer required by Item 307 of Regulation S-K as promulgated by the Securities and Exchange Commission and pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](stld-20251231xex31d1.htm)\n\n​\n\n​\n\n31.2*\n\n[Certification of Chief Financial Officer required by Item 307 of Regulation S-K as promulgated by the Securities and Exchange Commission and pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](stld-20251231xex31d2.htm)\n\n​\n\n​\n\n32.1*\n\n[Certification of Chief Executive Officer Pursuant to 18 U.S.C Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.](stld-20251231xex32d1.htm)\n\n​\n\n​\n\n32.2*\n\n[Certification of Chief Financial Officer Pursuant to 18 U.S.C Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.](stld-20251231xex32d2.htm)\n\n​\n\n​\n\n**XBRL Documents**\n\n​\n\n​\n\n101.INS*\n\nXBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.\n\n​\n\n​\n\n101.SCH*\n\nInline XBRL Taxonomy Extension Schema Document\n\n​\n\n​\n\n101.CAL*\n\nInline XBRL Taxonomy Extension Calculation Linkbase Document\n\n​\n\n​\n\n101.DEF*\n\nInline XBRL Taxonomy Extension Definition Linkbase Document\n\n​\n\n​\n\n101.LAB*\n\nInline XBRL Taxonomy Extension Label Linkbase Document\n\n​\n\n​\n\n101.PRE*\n\nInline XBRL Taxonomy Presentation Linkbase Document\n\n​\n\n​\n\n104*\n\nCover page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)\n\n​\n\n*     Filed concurrently herewith\n\n†     Indicates a management contract or compensatory plan or arrangement.\n\n​\n\n89\n\n[Table of Contents](#TOC)\n\nSIGNATURES\n\nPursuant to the requirements of Section 13 or 15(d) of Securities Exchange Act of 1934, Steel Dynamics, Inc. has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.\n\n​\n\n​\n\n​\n\nFebruary 27, 2026\n\n​\n\n​\n\n​\n\n​\n\nSTEEL DYNAMICS, INC.\n\n​\n\n​\n\n​\n\n​\n\n​\n\nBy:\n\n/s/ MARK D. MILLETT\n\n​\n\n​\n\nMark D. Millett\n\n​\n\n​\n\n*Chief Executive Officer*\n\n​\n\n​\n\n*(Principal Executive Officer)*\n\n​\n\nPOWER OF ATTORNEY\n\nEach person whose signature appears below constitutes and appoints Mark D. Millett and Theresa E. Wagler, either of whom may act without the joinder of the other, as his or her true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution, for him or her, and in his or her name, place and stead, in any and all capacities to sign any and all amendments, and supplements to this 2025 Annual Report on Form 10-K, filed pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, and to file the same, with all exhibits thereto, and all other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents full power and authority to do and performs each and every act and thing requisite and necessary to be done, as full to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or their substitute or substitutes may lawfully do or cause to be done by virtue thereof. **Pursuant to the requirements of the Securities Exchange Act of 1934, this 2025 Annual Report on Form 10-K has been signed below by the following persons on behalf of Steel Dynamics, Inc. and in the capacities and on the dates indicated.**\n\n​\n\n​\n\n​\n\n**Signatures**\n\n**Title**\n\n**Date**\n\n​\n\n​\n\n​\n\n*/s/* MARK D. MILLETT\n\nChairman and Chief Executive Officer\n\nFebruary 27, 2026\n\nMark D. Millett\n\n*(Principal Executive Officer)*\n\n​\n\n​\n\n​\n\n​\n\n*/s/* THERESA E. WAGLER\n\nExecutive Vice President and Chief Financial Officer\n\nFebruary 27, 2026\n\nTheresa E. Wagler\n\n*(Principal Financial Officer and*\n\n​\n\n​\n\n*Principal Accounting Officer)*\n\n​\n\n​\n\n​\n\n​\n\n*/s/* SHEREE L. BARGABOS\n\nDirector\n\nFebruary 27, 2026\n\nSheree L. Bargabos\n\n​\n\n​\n\n​\n\n​\n\n​\n\n*/s/* KENNETH W. CORNEW\n\nDirector\n\nFebruary 27, 2026\n\nKenneth W. Cornew\n\n​\n\n​\n\n​\n\n​\n\n​\n\n*/s/* TRACI M. DOLAN\n\nDirector\n\nFebruary 27, 2026\n\nTraci M. Dolan\n\n​\n\n​\n\n​\n\n​\n\n​\n\n*/s/* JENNIFER L HAMANN\n\nDirector\n\nFebruary 27, 2026\n\nJennifer L. Hamann\n\n​\n\n​\n\n​\n\n​\n\n​\n\n*/s/* BRADLEY S. SEAMAN\n\nDirector\n\nFebruary 27, 2026\n\nBradley S. Seaman\n\n​\n\n​\n\n​\n\n​\n\n​\n\n*/s/* GABRIEL L. SHAHEEN\n\nDirector\n\nFebruary 27, 2026\n\nGabriel L. Shaheen\n\n​\n\n​\n\n90\n\n[Table of Contents](#TOC)\n\n​\n\n​\n\n​\n\n*/s/* LUIS M. SIERRA\n\nDirector\n\nFebruary 27, 2026\n\nLuis M. Sierra\n\n​\n\n​\n\n​\n\n​\n\n​\n\n*/s/* RICHARD P. TEETS, JR.\n\nDirector\n\nFebruary 27, 2026\n\nRichard P. Teets, Jr.\n\n​\n\n​\n\n​\n\n​\n\n​\n\n91"}