Biggest changeRefer to the Aluminum Operations segment discussion for additional information. 39 Table of Contents Segment Operating Results ( dollars in thousands ) Years Ended December 31, 2024 % Change 2023 Net sales Steel Operations $ 12,527,066 (4)% $ 13,067,622 Metals Recycling Operations 4,136,913 (1)% 4,158,588 Steel Fabrication Operations 1,771,795 (37)% 2,806,777 Aluminum Operations 318,689 11% 285,907 Other 1,451,723 24% 1,171,901 20,206,186 21,490,795 Intra-company (2,665,796) (2,695,479) $ 17,540,390 (7)% $ 18,795,316 Operating income (loss) Steel Operations $ 1,582,374 (16)% $ 1,881,600 Metals Recycling Operations 76,807 61% 47,735 Steel Fabrication Operations 666,984 (58)% 1,593,261 Aluminum Operations (72,331) (522)% 17,146 Other (317,408) 20% (394,577) 1,936,426 3,145,165 Intra-company 6,611 6,016 $ 1,943,037 (38)% $ 3,151,181 40 Table of Contents Steel Operations Segment Steel operations include our 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, Roanoke Bar Division, Steel of West Virginia, steel coating and processing operations at The Techs, Heartland Flat Roll Division, United Steel Supply, Vulcan Threaded Products, Inc., warehouse operations in Mexico, and SDI Biocarbon Solutions, LLC, a joint venture to construct and operate a biocarbon production facility.
Biggest changeManagement’s Discussion and Analysis of Financial Condition and Results of Operations in Part II of our Annual Report on Form 10-K for the year ended December 31, 2024, for additional information regarding results of operations for the year ended December 31, 2024, as compared to the year ended December 31, 2023, and segment operating results for 2024 as compared to 2023. 38 Table of Contents Segment Operating Results ( dollars in thousands ) Years Ended December 31, 2025 % Change 2024 Net sales Steel Operations $ 13,412,773 7% $ 12,527,066 Metals Recycling Operations 4,346,074 5% 4,136,913 Steel Fabrication Operations 1,418,665 (20)% 1,771,795 Aluminum Operations 473,881 49% 318,689 Other 1,335,454 (8)% 1,451,723 20,986,847 20,206,186 Inter-segment (2,810,266) (2,665,796) $ 18,176,581 4% $ 17,540,390 Operating income (loss) Steel Operations $ 1,427,544 (10)% $ 1,582,374 Metals Recycling Operations 97,176 27% 76,807 Steel Fabrication Operations 407,425 (39)% 666,984 Aluminum Operations (172,970) (139)% (72,331) Other (281,851) 11% (317,408) 1,477,324 1,936,426 Inter-segment (1,338) 6,611 $ 1,475,986 (24)% $ 1,943,037 39 Table of Contents Steel Operations Segment Steel operations include our 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, Roanoke Bar Division, and Steel of West Virginia; steel coating and processing operations at The Techs, Heartland Flat Roll Division, United Steel Supply, New Process Steel, L.P.
Net sales from our operations are a factor of volumes shipped, product mix, and related pricing. We charge premium prices for certain grades of steel, product dimensions, certain smaller volumes, and for value-added processing or coating of our steel products.
Net sales from our operations are a factor of volumes shipped, product mix, and related pricing. We charge premium prices for certain grades of steel and aluminum, product dimensions, certain smaller volumes, and for value-added processing or coating of our steel products.
Our goodwill, relating to various business combinations, consisted of the following at December 31, 2024 and 2023 (in thousands): Steel Operations Segment $ 272,133 Aluminum Operations Segment 14,000 Metals Recycling Operations Segment 189,413 Steel Fabrication Operations Segment 1,925 $ 477,471 At least once annually (as of October 1), or when indicators of impairment exist, we perform a goodwill impairment analysis.
Our goodwill, relating to various business combinations, consisted of the following at December 31, 2025 and 2024 (in thousands): Steel Operations Segment $ 272,133 Aluminum Operations Segment 14,000 Metals Recycling Operations Segment 189,413 Steel Fabrication Operations Segment 1,925 $ 477,471 At least once annually (as of October 1), or when indicators of impairment exist, we perform a goodwill impairment analysis.
We have firm contracts with various vendors for the completion of certain construction projects at our various divisions at December 31, 2024. Refer to Note 8. Commitments and Contingencies to the consolidated financial statements elsewhere in this report for this information. Lease commitments. We have entered into operating leases relating principally to transportation and other equipment, and some real estate.
We have firm contracts with various vendors for the completion of certain construction projects at our various divisions at December 31, 2025. Refer to Note 8. Commitments and Contingencies to the consolidated financial statements elsewhere in this report for this information. Lease commitments. We have entered into operating leases relating principally to transportation and other equipment, and some real estate.
The principal elements of these costs are scrap and scrap substitutes (which represent the most significant single component of our consolidated costs of goods sold), steel substrate, direct and indirect labor and related benefits, alloys, zinc, transportation and freight, repairs and maintenance, utilities such as electricity and natural gas, and depreciation. 38 Table of Contents Selling, General and Administrative Expenses .
The principal elements of these costs are scrap and scrap substitutes (which represent the most significant single component of our consolidated costs of goods sold), steel substrate, direct and indirect labor and related benefits, alloys, zinc, transportation and freight, repairs and maintenance, utilities such as electricity and natural gas, and depreciation. 37 Table of Contents Selling, General and Administrative Expenses .
Results may differ from these estimates due to actual outcomes being different from those on which we based our assumptions. We believe the following critical accounting estimates affect our more significant judgments and estimates used in the preparation of our consolidated financial statements. 47 Table of Contents Impairments of Long-Lived Tangible and Definite-Lived Intangible Assets.
Results may differ from these estimates due to actual outcomes being different from those on which we based our assumptions. We believe the following critical accounting estimates affect our more significant judgments and estimates used in the preparation of our consolidated financial statements. 46 Table of Contents Impairments of Long-Lived Tangible and Definite-Lived Intangible Assets.
A tax benefit that has been previously reserved because of a failure to meet the "more likely than not" recognition threshold would be recognized in our income tax expense in the first interim period when the uncertainty disappears. Settlement of any particular issue would usually require the use of cash. 49 Table of Contents
A tax benefit that has been previously reserved because of a failure to meet the "more likely than not" recognition threshold would be recognized in our income tax expense in the first interim period when the uncertainty disappears. Settlement of any particular issue would usually require the use of cash. 48 Table of Contents
We consider historical and anticipated future results, general 48 Table of Contents economic and market conditions, the impact of planned business and operational strategies and all available information at the time the fair values of reporting units are estimated. Those estimates and judgments may or may not ultimately prove accurate.
We consider historical and anticipated future results, general 47 Table of Contents economic and market conditions, the impact of planned business and operational strategies and all available information at the time the fair values of reporting units are estimated. Those estimates and judgments may or may not ultimately prove accurate.
Accordingly, our qualitative assessments consider changes in interest rates and our quantitative tests include discount rate scenario analysis to evaluate the impact on estimated reporting unit fair values. Our fourth quarter 2024, 2023, and 2022 annual goodwill impairment analyses did not result in any impairment charges.
Accordingly, our qualitative assessments consider changes in interest rates and our quantitative tests include discount rate scenario analysis to evaluate the impact on estimated reporting unit fair values. Our fourth quarter 2025, 2024, and 2023 annual goodwill impairment analyses did not result in any impairment charges.
We consider historical and anticipated future results, general economic and market conditions, the impact of planned business and operational strategies, and all other available information at the time the estimates are made. Those estimates and judgments may or may not ultimately prove accurate. There were no indicators of impairment or impairment charges recorded during 2024, 2023, or 2022. Goodwill.
We consider historical and anticipated future results, general economic and market conditions, the impact of planned business and operational strategies, and all other available information at the time the estimates are made. Those estimates and judgments may or may not ultimately prove accurate. There were no material indicators of impairment or impairment charges recorded during 2025, 2024, or 2023. Goodwill.
At December 31, 2024, we had $1.2 billion of availability on the Revolver, $9.3 million of outstanding letters of credit and other obligations which reduce availability, and there were no borrowings outstanding. The financial covenants under our Facility state that we must maintain an interest coverage ratio of not less than 2.50:1.00.
At December 31, 2025, we had $1.2 billion of availability on the Revolver, $9.2 million of outstanding letters of credit and other obligations which reduce availability, and there were no borrowings outstanding. The financial covenants under our Facility state that we must maintain an interest coverage ratio of not less than 2.50:1.00.
Revenues from these plants are generated from the fabrication of girders, steel joists and steel deck used within the non-residential construction industry.
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.
The determination to pay cash dividends in the future is at the discretion of our board of directors, after taking into account various factors, including our financial condition, results of operations, outstanding indebtedness, current and anticipated cash needs and growth plans. Other.
The determination to pay cash dividends in the future is at the discretion of our board of directors, after taking into account various factors provided by executive management, including our financial condition, results of operations, outstanding indebtedness, current and anticipated cash needs and growth plans. Other.
The purchase of various steel products is the largest single cost of production for our steel fabrication operations, historically representing approximately two-thirds of the total cost of manufacturing. The average cost of steel consumed decreased 5% in 2024, as compared to 2023.
The purchase of various steel products is the largest single cost of production for our steel fabrication operations, historically representing approximately two-thirds of the total cost of manufacturing. The average cost of steel consumed decreased 7% in 2025, as compared to 2024.
The share repurchase programs do not require us to acquire any specific number of shares, and may be modified, suspended, extended, or terminated by us at any time. The share repurchase programs do not have an expiration date. There were $1.2 billion and $1.5 billion of share repurchases during 2024 and 2023, respectively.
The share repurchase programs do not require us to acquire any specific number of shares, and may be modified, suspended, extended, or terminated by us at any time. The share repurchase programs do not have an expiration date. There were $900.9 million and $1.2 billion of share repurchases during 2025 and 2024, respectively.
Some factors that could cause such forward-looking statements to turn out differently than anticipated include: (1) domestic and global economic factors; (2) global steelmaking overcapacity and imports of steel, together with increased scrap prices; (3) pandemics, epidemics, widespread illness or other health issues; (4) the cyclical nature of the steel industry and the industries we serve; (5) volatility and major fluctuations in prices and availability of scrap metal, scrap substitutes and supplies, and our potential inability to pass higher costs on to our customers; (6) cost and availability of electricity, natural gas, oil, and other energy resources are subject to volatile market conditions; (7) increased environmental, greenhouse gas emissions and sustainability considerations from our customers and investors or related regulations; (8) compliance with and changes in environmental and remediation requirements; (9) significant price and other forms of competition from other steel and aluminum producers, scrap processors and alternative materials; (10) availability of an adequate source of supply of scrap for our metals recycling operations; (11) cybersecurity threats and risks to the security of our sensitive data and information technology; (12) the implementation of our growth strategy; (13) our ability to retain, develop and attract key personnel; (14) litigation and legal compliance; (15) unexpected equipment downtime or shutdowns; (16) governmental agencies may refuse to grant or renew some of our licenses and permits; (17) our senior unsecured credit facility contains, and any future financing agreements may contain, restrictive covenants that may limit our flexibility; and (18) the impacts of impairment charges.
Some factors that could cause such forward-looking statements to turn out differently than anticipated include: (1) domestic and global economic factors; (2) global steelmaking overcapacity and imports of steel, together with increased scrap prices; (3) the cyclical nature of the metals industries and the industries we serve; (4) volatility and major fluctuations in prices and availability of scrap metal, scrap substitutes and supplies, and our potential inability to pass higher costs on to our customers; (5) cost and availability of electricity, natural gas, oil, and other energy resources are subject to volatile market conditions; (6) increased environmental, greenhouse gas emissions and sustainability considerations from our customers and investors or related regulations; (7) compliance with and changes in environmental and remediation requirements; (8) significant price and other forms of competition from other steel and aluminum producers, scrap processors and alternative materials; (9) availability of an adequate source of supply of scrap for our metals recycling operations; (10) cybersecurity threats and risks to the security of our sensitive data and information technology; (11) the implementation of our growth strategy; (12) our ability to retain, develop and attract key personnel; (13) litigation and legal compliance; (14) unexpected equipment downtime or shutdowns; (15) difficulties in the launch or production ramp-up of new products; (16) our aluminum operations depend on a core group of significant customers; (17) governmental agencies may refuse to grant or renew some of our licenses and permits; (18) our existing debt agreements contain, and any future financing agreements may contain, restrictive covenants that may limit our flexibility; and (19) the impacts of impairment charges.
Of the costs incurred during 2024 for monitoring and compliance, approximately 74% were related to the normal transportation of certain types of by-products produced in our steelmaking processes and other facilities in accordance with legal requirements. We incurred combined environmental remediation costs of approximately $4.9 million at all of our facilities during 2024.
Of the costs incurred during 2025 for monitoring and compliance, approximately 72% were related to the normal transportation and disposal of certain types of by-products produced in our steelmaking processes and other facilities in accordance with legal requirements. We incurred combined environmental remediation costs of approximately $9.3 million at all of our facilities during 2025.
Our total long-term debt to capitalization ratio (representing our long-term debt, including current maturities, divided by the sum of our long-term debt, redeemable noncontrolling interests, and our total stockholders’ equity) was 26.5% and 25.8% at December 31, 2024 and 2023, respectively.
Our total long-term debt to capitalization ratio (representing our long-term debt, including current maturities, divided by the sum of our long-term debt, redeemable noncontrolling interests, and our total stockholders’ equity) was 32.1% and 26.5% at December 31, 2025, and December 31, 2024, respectively.
We have an accrual of $3.8 million recorded for environmental remediation related to our metals recycling operations, $2.6 million related to our idled Minnesota ironmaking operations, and $712,000 related to our steel operations.
We have an accrual of $4.4 million recorded for environmental remediation related to our metals recycling operations, $2.6 million related to our idled Minnesota ironmaking operations, and $566,000 related to our steel operations.
As a reflection of continued confidence in our current and future cash flow generation capability and financial position, we increased our quarterly cash dividend by 8% to $0.46 per share in the first quarter of 2024 (from $0.425 per share for each quarter in 2023), resulting in declared cash dividends of $284.1 million during 2024, compared to $280.5 million in 2023.
As a reflection of continued confidence in our current and future cash flow generation capability and financial position, we increased our quarterly cash dividend by 9% to $0.50 per share in the first quarter of 2025 (from $0.46 per share for each quarter in 2024), resulting in declared cash dividends of $294.1 million during 2025, compared to $284.1 million during 2024.
Our board of directors has authorized share repurchase programs during prior years, the most recent of which occurred in November 2023 for a program of up to $1.5 billion of the company’s common stock. In February 2025, our board of directors authorized an additional share repurchase program of up to $1.5 billion of our common stock.
Our board of directors has authorized share repurchase programs during prior years and the current year, the most recent of which occurred in February 2025 for a program of up to $1.5 billion of the company’s common stock.
As of December 31, 2024, we had $193.5 million remaining available to purchase under the November 2023 share repurchase program. See Part II, Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities for additional information.
As of December 31, 2025, we had $801.0 million remaining available to purchase under the February 2025 share repurchase program. See Part II, Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities for additional information.
Steel fabrication operations accounted for 10% and 15% of our consolidated net sales during 2024 and 2023, respectively. Segment Results 2024 vs. 2023 Net sales for the steel fabrication operations decreased 37% during 2024 compared to 2023, as average selling prices decreased 31% and volumes decreased 8% compared to 2023.
Steel fabrication operations accounted for 8% and 10% of our consolidated net sales during 2025 and 2024, respectively. Steel Fabrication Operations Segment Results 2025 vs. 2024 Net sales for the steel fabrication operations decreased 20% during 2025 compared to 2024, as average selling prices decreased 13% and volumes decreased 8% compared to 2024.
During 2024, we incurred costs related to the monitoring and compliance of environmental matters in the amount of approximately $60.2 million and capital expenditures related to environmental compliance of approximately $4.3 million.
During 2025, we incurred costs related to the monitoring and compliance of environmental matters in the amount of approximately $60.4 million and capital expenditures related to environmental compliance of approximately $10.0 million.
Our metallic raw material cost consumed in our steel mills decreased $28 per net ton, or 7%, in 2024 compared to 2023, consistent with overall decreased domestic scrap pricing noted below in the metals recycling operations segment discussion. As a result of average selling prices decreasing more than scrap costs, specifically for long products, metal spread (which we define as the difference between average steel mill selling prices and the cost of ferrous scrap consumed in our steel mills) decreased 3% in 2024 compared to 2023.
Our metallic raw material cost consumed in our steel mills was unchanged on a per net ton basis in 2025 compared to 2024, consistent with overall steady domestic scrap pricing noted below in the metals recycling operations segment discussion. As a result of average selling prices decreasing more than scrap costs, metal spread (which we define as the difference between average steel mill selling prices and the cost of ferrous scrap consumed in our steel mills) decreased 2% in 2025 compared to 2024.
Due to metal spread compression, operating income for the steel operations decreased 16% to $1.6 billion in 2024 compared to 2023. Metals Recycling Operations Segment Metals recycling operations include our OmniSource ferrous and nonferrous processing, transportation, marketing, brokerage, and scrap management services primarily throughout the United States and Mexico.
Due to metal spread compression, operating income for the steel operations decreased 10% to $1.4 billion in 2025 compared to 2024. Metals Recycling Operations Segment Metals recycling operations include our Omni ferrous and nonferrous processing, transportation, marketing, brokerage, and scrap management services located throughout the United States and in Central and Northern Mexico.
During 2024, we performed a qualitative assessment and performed quantitative tests in 2023 and 2022.
During 2025 and 2024, we performed a qualitative assessment and performed a quantitative test in 2023.
Our interest coverage ratio is calculated by dividing our last-twelve-months (LTM) consolidated Adjusted EBITDA as defined in the Facility (earnings before interest, taxes, depreciation, amortization, and certain other non-cash transactions as defined in the Facility) by our LTM gross interest expense, less amortization of financing fees.
Our interest coverage ratio is calculated by dividing our last-twelve-months (LTM) consolidated EBITDA as defined in the Facility (earnings before interest, taxes, depreciation, amortization, and certain other non-cash transactions as defined in the Facility) by our LTM gross interest expense, less amortization of financing fees. In addition, a debt to capitalization ratio of not more than 0.60:1.00 must be maintained.
We paid cash dividends of $282.6 million and $271.3 million during 2024 and 2023, respectively. Our board of directors, along with executive management, approves the payment of dividends on a quarterly basis.
We paid cash dividends of $291.2 million and $282.6 million during 2025 and 2024, respectively. Our board of directors approves the payment of dividends on a quarterly basis.
Net sales for the steel operations segment were 4% lower in 2024 when compared to 2023, due to lower average steel selling prices on consistent volumes. 41 Table of Contents Metallic raw materials used in our electric arc furnaces represent our single most significant steel manufacturing cost, generally comprising approximately 55% to 65% of our steel mill operations’ manufacturing costs.
Net sales for the steel operations segment were 7% higher in 2025 when compared to 2024, due to a 9% increase in segment shipments. Metallic raw materials used in our electric arc furnaces represent our single most significant steel manufacturing cost, generally comprising approximately 55% to 65% of our steel mill operations’ manufacturing costs.
Our business is capital intensive and requires substantial expenditures for, among other things, the purchase and maintenance of equipment used in our operations, and to remain in compliance with environmental laws.
Liquidity and Capital Resources Capital Resources and Long-term Debt. Our business is capital intensive and requires substantial expenditures for, among other things, the purchase and maintenance of equipment used in our operations.
Other expense consists of any non-operating costs, such as certain acquisition and financing expenses. 2024 Overview During 2024 we achieved steel shipments of 12.7 million tons, our second highest annual volume behind 2023’s 12.8 million tons.
Other expense consists of any non-operating costs, such as certain acquisition and financing expenses. 2025 Overview During 2025 we achieved record steel shipments of 13.7 million tons.
At this time, we do not believe there will be any significant examination adjustments that would result in a material change to our financial position, results of operations or cash flows.
The tax years 2022 through 2025 remain open to examination by the Internal Revenue Service and various state and local jurisdictions. At this time, we do not believe there will be any significant examination adjustments that would result in a material change to our financial position, results of operations or cash flows.
In 2024 and 2023, 62% of metals recycling operations ferrous scrap was sold to our own steel mills, while our steel mill utilization remained consistent at 81% and 82% in 2024 and 2023, respectively. Metals recycling operations accounted for 11% of our consolidated net sales during 2024 and 2023.
In 2025 and 2024, 65% and 62%, respectively, of metals recycling operations ferrous scrap was sold to our own steel mills, as our steel mill utilization increased to 86% in 2025 compared to 81% 2024, with production levels at our Sinton facility increasing during 2025. Metals recycling operations accounted for 11% of our consolidated net sales during 2025 and 2024.
Metal spread compression in our steel and, particularly, steel fabrication segments resulted in significantly lower operating income in 2024 compared to 2023. Consolidated operating income for 2024 decreased $1.2 billion, or 38%, to $1.9 billion, compared to $3.2 billion in 2023.
Metal spread compression in our steel and, particularly, steel fabrication segments resulted in lower operating income in 2025 compared to 2024. Consolidated operating income for 2025 decreased $467.1 million, or 24%, to $1.5 billion, compared to $1.9 billion in 2024. Net income attributable to Steel Dynamics, Inc. for 2025 decreased $351.5 million, or 23%, to $1.2 billion, compared to 2024.
Metals Recycling Operations Shipments: Years Ended December 31, 2024 % Change 2023 Ferrous metal (gross tons) Total 5,850,544 1% 5,792,484 Inter-company (3,656,034) (3,593,328) External shipments 2,194,510 - 2,199,156 Nonferrous metal (thousands of pounds) Total 965,491 (1)% 970,445 Inter-company (171,915) (207,866) External shipments 793,576 4% 762,579 Segment Results 2024 vs. 2023 During 2024, our metals recycling operations continued to benefit from solid domestic steel industry demand, resulting in consistent ferrous and nonferrous scrap shipments compared to 2023.
Metals Recycling Operations Segment Shipments: Years Ended December 31, 2025 % Change 2024 Ferrous metal (gross tons) Total 6,160,797 5% 5,850,544 Inter-segment (4,013,035) (3,656,034) External shipments 2,147,762 (2)% 2,194,510 Nonferrous metal (thousands of pounds) Total 916,502 (5)% 965,491 Inter-segment (178,716) (171,915) External shipments 737,786 (7)% 793,576 41 Table of Contents Metals Recycling Operations Segment Results 2025 vs. 2024 During 2025, our metals recycling operations continued to benefit from solid domestic steel industry demand, resulting in increased ferrous scrap shipments compared to 2024.
Due to decreased selling prices per ton more than offsetting decreased steel input costs per ton, metal spread (which we define as the difference between average selling prices and the cost of purchased steel) contracted 41% in 2024 compared to 2023.
Lower selling prices per ton offset decreased steel input costs per ton, 42 Table of Contents resulting in contraction of metal spread (which we define as the difference between average selling prices and the cost of purchased steel) by 17% in 2025 compared to 2024.
As a result of the overall increased metals spreads, metals recycling operations operating income increased 61% to $76.8 million in 2024 compared to 2023. 42 Table of Contents Steel Fabrication Operations Segment Steel fabrication operations include the company’s New Millennium Building Systems’ joist and deck plants located throughout the United States, and in Northern Mexico.
As a result of these volume and metal spread changes, metals recycling operations operating income in 2025 of $97.2 million increased 27% from 2024. Steel Fabrication Operations Segment Steel fabrication operations include our New Millennium Building Systems’ joist and deck plants located throughout the United States, and in Northern Mexico.
Estimated interest payments also include a 0.175% commitment fee on our available Revolver, and an average interest rate of 6.23% on our other debt of $28.8 million. Our estimated interest payments are $116.4 million, $109.4 million, $89.0 million, $83.4 million, and $82.2 million, for the years 2025 through 2029, respectively, and $442.4 million thereafter. 46 Table of Contents Purchase obligations.
Estimated interest payments also include a 0.175% commitment fee on our available Revolver, and an average interest rate of 5.44% on our other debt of $36.6 million. Our estimated interest payments are $180.5 million, $177.4 million, $168.5 million, $144.6 million, and $129.9 million, for the years 2026 through 2030, respectively, and $1.1 billion thereafter. 45 Table of Contents Purchase obligations.
In addition, a debt to capitalization ratio of not more than 0.60:1.00 must be maintained. At December 31, 2024, our interest coverage ratio and debt to capitalization ratio were 21.68:1.00 and 0.27:1.00, respectively. We were, therefore, in compliance with these covenants at December 31, 2024, and we anticipate we will continue to be in compliance during the next twelve months.
At December 31, 2025, our interest coverage ratio and debt to capitalization ratio were 13.33:1.00 and 0.32:1.00, respectively. We were in compliance with these covenants at December 31, 2025, and we anticipate we will continue to be in compliance during the next twelve months. Working Capital (representing excess of current assets over current liabilities).
Net income attributable to Steel Dynamics, Inc. for 2024 decreased $913.7 million, or 37%, to $1.5 billion, compared to 2023. Diluted earnings per share attributable to Steel Dynamics, Inc. was $9.84 for 2024, compared to $14.64 for 2023. Refer to Item 7.
Diluted earnings per share attributable to Steel Dynamics, Inc. was $7.99 for 2025, compared to $9.84 for 2024. Refer to Item 7.
Working Capital (representing excess of current assets over current liabilities). We generated cash flow from operations of $1.8 billion in 2024 compared to $3.5 billion in 2023.
We generated cash flow from operations of $1.4 billion in 2025 compared to $1.8 billion in 2024.
Steel operations accounted for 69% and 67% of our consolidated net sales during 2024 and 2023, respectively. See Item 1. Business for further information on Steel Operations segment operations.
(acquired December 1, 2025), and Vulcan Threaded Products, Inc.; warehouse operations in Mexico; and a 75% controlling equity interest in SDI Biocarbon Solutions, LLC. Steel operations accounted for 72% and 69% of our consolidated net sales during 2025 and 2024, respectively. See Item 1. Business for further information on Steel Operations segment operations.
Our liquidity of $2.2 billion and anticipated future operating cash flow generation is sufficient to provide for our planned 2025 capital requirements. Cash Dividends.
Capital Investments. During 2025, we invested $948.0 million in property, plant and equipment, primarily within our aluminum operations and steel operations segments, compared with $1.9 billion invested during 2024. Our liquidity of $2.2 billion and anticipated future operating cash flow generation is sufficient to provide for our planned 2026 capital requirements. Cash Dividends.
Due to a challenging pricing environment throughout much of 2024, ferrous average selling prices decreased 7% while nonferrous average selling prices increased 10% during 2024 compared to 2023. Ferrous metal spread (which we define as the difference between average selling prices and the cost of purchased scrap) was flat and nonferrous metal spread increased 13% during 2024 compared to 2023.
Ferrous shipments increased 5% and nonferrous shipments decreased 5% in 2025 compared to 2024. Ferrous metal spreads (which we define as the difference between average selling prices and the cost of purchased scrap) were flat, while nonferrous metal spreads, primarily aluminum, increased 24% in 2025 compared to 2024, with aluminum prices rising in the fourth quarter of 2025.
Profit sharing expense for eligible employees is 8% of consolidated pretax income excluding noncontrolling interests and other items. Refer to Note 10. Retirement Plans to the consolidated financial statements elsewhere in this report for further information. Interest Expense, net of Capitalized Interest. During 2024, interest expense of $56.3 million decreased 26% from $76.5 million during 2023.
Retirement Plans to the consolidated financial statements elsewhere in this report for further information. Interest Expense, net of Capitalized Interest. During 2025, interest expense of $70.0 million increased 24% from $56.3 million during 2024.
Our liquidity at December 31, 2024, is as follows (in thousands): Cash and equivalents $ 589,464 Short-term and other investments 388,563 Unsecured revolver availability 1,190,741 Total liquidity $ 2,168,768 Our total outstanding debt of $3.2 billion increased $160.0 million compared to December 31, 2023, due to our issuance of $600.0 million of senior unsecured notes in July 2024 as described in Note 3, the proceeds of which were used for general corporate purposes, including the repayment of our 2.800% senior notes due December 2024, working capital, capital expenditures, advances for or investments in subsidiaries, acquisitions, redemption and repayment of other outstanding indebtedness, and purchases of the company’s common stock.
Our liquidity at December 31, 2025, is as follows (in thousands): Cash and equivalents $ 769,878 Short-term and other investments 255,731 Unsecured revolver availability 1,190,820 Total liquidity $ 2,216,429 Our total outstanding debt of $4.2 billion increased $980.2 million compared to December 31, 2024, due to our issuance of $600.0 million of 5.250% notes due 2035 and $400.0 million of 5.750% notes due 2055 in March 2025 and $650.0 million of 4.000% notes due 2028 and an additional $150.0 million of 5.250% notes due 2035 in November 2025 as described in Note 3, the proceeds of which were used to redeem our $400.0 million of 2.400% notes due June 2025 and our $400.0 million of 5.000% notes due December 2026, and other general corporate purposes.
Included in the balance of unrecognized tax benefits at December 31, 2024, are potential benefits of $26.4 million that, if recognized, would affect the effective tax rate. We recognize interest and penalties related to our tax contingencies on a net-of-tax basis in income tax expense.
We recognize interest and penalties related to our tax contingencies on a net-of-tax basis in income tax expense. During the year ended December 31, 2025, we recognized income from the decrease of interest expense and penalties of $340,000, net of tax.
Selling, general and administrative expenses of $664.1 million during 2024 increased 13% from $588.6 million during 2023 primarily due to an increase in payroll and benefits expense related to the growth of the aluminum operations segment during 2024. Selling, general and administrative expenses represented 3.8% and 3.1% of net sales during 2024 and 2023, respectively.
Selling, general and administrative expenses of $765.3 million during 2025 increased 15% from $664.1 million during 2024 primarily due to an increase in payroll and benefits expense primarily related to construction, start-up, and commissioning costs associated with the recycled aluminum flat rolled products mill and satellite recycled aluminum slab centers during 2025.
During the year ended December 31, 2024, we recognized expense from the increase of interest expense and penalties of $710,000, net of tax. In addition to the unrecognized tax benefits noted above, we had $4.2 million accrued for the payment of interest and penalties at December 31, 2024.
In addition to the unrecognized tax benefits noted above, we had $3.7 million accrued for the payment of interest and penalties at December 31, 2025. We file income tax returns in the U.S. federal jurisdiction as well as income tax returns in various state jurisdictions.
Income Tax Expense. During 2024, income tax expense of $432.9 million, at an effective income tax rate of 21.8%, decreased 42% compared to the $751.6 million, at an effective income tax rate of 23.3%, during 2023, consistent with decreased pretax earnings.
Income tax expense of $305.7 million, at an effective income tax rate of 20.5%, during 2025 decreased 29% compared to $432.9 million, at an effective income tax rate of 21.8%, during 2024, consistent with decreased pretax earnings. In July 2025, U.S. Congress enacted the One Big Beautiful Bill Act (“OBBBA”), which included significant provisions modifying the U.S. tax framework.
Steel Operations Shipments (tons): Years Ended December 31, 2024 % Change 2023 Total shipments 12,660,487 (1)% 12,821,753 Intra-segment shipments (1,306,364) (1,449,832) Steel Operations Segment shipments 11,354,123 - 11,371,921 External shipments 10,929,453 - 10,976,707 Segment Results 2024 vs. 2023 During 2024, our steel operations achieved annual shipments of 12.7 million tons (11.4 million excluding intra-segment), slightly less than 2023 total record shipments.
Steel Operations Segment Shipments (tons): Years Ended December 31, 2025 % Change 2024 Total shipments 13,748,801 9% 12,660,487 Intra-segment shipments (1,429,299) (1,306,364) Steel Operations Segment shipments 12,319,502 9% 11,354,123 External shipments 11,960,582 9% 10,929,453 40 Table of Contents Steel Operations Segment Results 2025 vs. 2024 During 2025, our steel operations achieved record annual shipments of 13.7 million tons (12.3 million excluding intra-segment), 9% higher than 2024 shipments, primarily due to significant sales volume increases at our Sinton and Heartland facilities as the four new value-added lines operated for a full year in 2025.
Profit sharing expense during 2024 of $164.9 million decreased 39% from $272.0 million during 2023, consistent with decreased pretax earnings. This decrease in profit sharing expense was the primary driver of decreased operating loss for other operations of 20% in 2024 compared to 2023.
This decrease in profit sharing expense was the primary driver of decreased operating loss for our other operations of 11% in 2025 compared to 2024. Profit sharing expense for eligible employees is 8% of consolidated pretax income excluding noncontrolling interests and other items. Refer to Note 10.
Customer order activity and steel demand were stable during 2024, with the construction, automotive, industrial, and energy sectors leading demand. In spite of strong market demand, average selling prices were lower during 2024 compared to 2023, as total steel segment average selling prices decreased 4%, or $46 per ton, compared to 2023.
Despite these favorable market demand conditions, in the face of trade policy uncertainty, average selling prices were modestly lower during 2025 compared to 2024. Steel segment average selling prices decreased 1%, or $14 per ton, compared to 2024.
Net other income was $96.2 million in 2024, compared to $144.2 million in 2023, due primarily to the impact of foreign currency exchange rate losses of $18.7 million in 2024 compared to gains of $10.5 million in 2023, as well as a $21.8 million reduction in interest income on investments in 2024 compared to 2023 due to a decrease in the balance of invested cash during 2024.
Net other income was $87.0 million in 2025, compared to $96.2 million in 2024, a decrease of $9.2 million due primarily to the impact of decreased interest income due to declining rates of return and lower invested cash balances in 2025 compared to 2024. Income Tax Expense.
Working capital decreased $1.2 billion, or 26%, during 2024 to $3.3 billion at December 31, 2024, due primarily to a $1.4 billion decrease in cash and equivalents and short-term investments in support of our capital investments within our aluminum and steel operations. 45 Table of Contents Capital Investments.
Working capital increased $1.1 billion, or 33%, 44 Table of Contents during 2025 to $4.4 billion at December 31, 2025, due to a $265.5 million increase in accounts receivable, as well as a $624.8 million dollar increase in inventories, primarily within our aluminum operations segment as our recycled aluminum flat rolled products mill began commissioning and operations in the second half of 2025.