Biggest changeOperating expenses increased for 2024, driven by higher amortization expense from Horizon acquisition-related assets, higher R&D and SG&A expenses, including expenses from the acquired Horizon business, and higher profit share and royalty expense. 63 Results of Operations Product sales Worldwide product sales were as follows (dollar amounts in millions): Year ended December 31, 2024 Change Year ended December 31, 2023 Change Year ended December 31, 2022 Prolia $ 4,374 8 % $ 4,048 12 % $ 3,628 ENBREL 3,316 (10) % 3,697 (10) % 4,117 XGEVA 2,225 5 % 2,112 5 % 2,014 Repatha 2,222 36 % 1,635 26 % 1,296 Otezla 2,126 (3) % 2,188 (4) % 2,288 TEPEZZA (1) 1,851 * 448 N/A — EVENITY 1,563 35 % 1,160 47 % 787 KYPROLIS 1,503 7 % 1,403 13 % 1,247 Nplate 1,456 (1) % 1,477 13 % 1,307 Aranesp 1,342 (1) % 1,362 (4) % 1,421 BLINCYTO 1,216 41 % 861 48 % 583 KRYSTEXXA (1) 1,185 * 272 N/A — Vectibix 1,045 6 % 984 10 % 893 TEZSPIRE 972 71 % 567 * 170 Other products (2) 5,630 20 % 4,696 (7) % 5,050 Total product sales $ 32,026 19 % $ 26,910 9 % $ 24,801 Total U.S. $ 23,301 21 % $ 19,272 9 % $ 17,743 Total ROW 8,725 14 % 7,638 8 % 7,058 Total product sales $ 32,026 19 % $ 26,910 9 % $ 24,801 * Change in excess of 100% N/A = not applicable ____________ (1) TEPEZZA and KRYSTEXXA were acquired from our Horizon acquisition on October 6, 2023, and include product sales in the periods after the acquisition date.
Biggest changeRisk Factors, of this Annual Report on Form 10-K. 63 Results of operations Product sales Worldwide product sales were as follows (dollar amounts in millions): Year ended December 31, 2025 Change Year ended December 31, 2024 Change Year ended December 31, 2023 Prolia $ 4,414 1 % $ 4,374 8 % $ 4,048 Repatha 3,016 36 % 2,222 36 % 1,635 Otezla 2,265 7 % 2,126 (3) % 2,188 ENBREL 2,226 (33) % 3,316 (10) % 3,697 EVENITY 2,100 34 % 1,563 35 % 1,160 XGEVA 2,084 (6) % 2,225 5 % 2,112 TEPEZZA (1) 1,903 3 % 1,851 * 448 BLINCYTO 1,559 28 % 1,216 41 % 861 Nplate 1,524 5 % 1,456 (1) % 1,477 TEZSPIRE (2) 1,478 52 % 972 71 % 567 KYPROLIS 1,412 (6) % 1,503 7 % 1,403 Aranesp 1,389 4 % 1,342 (1) % 1,362 KRYSTEXXA (1) 1,340 13 % 1,185 * 272 Vectibix 1,175 12 % 1,045 6 % 984 Other products (3) 7,263 29 % 5,630 20 % 4,696 Total product sales $ 35,148 10 % $ 32,026 19 % $ 26,910 Total U.S. $ 25,656 10 % $ 23,301 21 % $ 19,272 Total ROW 9,492 9 % 8,725 14 % 7,638 Total product sales $ 35,148 10 % $ 32,026 19 % $ 26,910 * Change in excess of 100% ____________ (1) TEPEZZA and KRYSTEXXA were acquired from our Horizon acquisition on October 6, 2023, and include product sales in the periods after the acquisition date.
These categories are described below: Category Description Research and early pipeline R&D expenses incurred in activities substantially in support of early research through the completion of phase 1 clinical trials, including drug discovery, toxicology, pharmacokinetics and drug metabolism and process development Later-stage clinical programs R&D expenses incurred in or related to phase 2 and phase 3 clinical programs intended to result in registration of a new product or a new indication for an existing product primarily in the United States or the EU Marketed products R&D expenses incurred in support of the Company’s marketed products that are authorized to be sold primarily in the United States or the EU.
These categories are described below: Category Description Research and Early Pipeline R&D expenses incurred in activities substantially in support of early research through the completion of Phase 1 clinical trials, including drug discovery, toxicology, pharmacokinetics and drug metabolism and process development Later-Stage Clinical Programs R&D expenses incurred in or related to Phase 2 and Phase 3 clinical programs intended to result in registration of a new product or a new indication for an existing product primarily in the United States or the EU Marketed Product Support R&D expenses incurred in support of the Company’s marketed products that are authorized to be sold primarily in the United States or the EU.
Cash provided by operating activities increased in 2024 as compared to 2023 due to higher net income after adjustments for noncash items and timing of working capital items primarily driven by higher collections in the fourth quarter.
Cash provided by operating activities increased in 2024 as compared to 2023 due to higher net income after adjustments for noncash items and the timing of working capital items primarily driven by higher collections in the fourth quarter of 2024.
We believe our estimations of future cash flows used for assessing impairment of long-lived assets are based on reasonable assumptions given the facts and circumstances as of the related dates of the assessments. 80 Recently Issued Accounting Standards See Part IV—Note 1, Summary of significant accounting policies, to the Consolidated Financial Statements for a discussion of recently issued accounting pronouncements.
We believe our estimations of future cash flows used for assessing impairment of long-lived assets are based on reasonable assumptions given the facts and circumstances as of the related dates of the assessments. Recently issued accounting standards See Part IV—Note 1, Summary of significant accounting policies, to the Consolidated Financial Statements for a discussion of recently issued accounting pronouncements. 80
These models require the use of significant estimates and assumptions, including but not limited to: • determining the timing and expected costs to complete in-process projects, taking into account the stage of completion at the acquisition date; • projecting the probability and timing of obtaining marketing approval from the FDA and other regulatory agencies for product candidates; • estimating the timing of and future net cash flows from product sales resulting from completed products and in-process projects; and • developing appropriate discount rates to calculate the present values of the cash flows.
These models require the use of significant estimates and assumptions, including but not limited to: 79 • determining the timing and expected costs to complete in-process projects, taking into account the stage of completion at the acquisition date; • projecting the probability and timing of obtaining marketing approval from the FDA and other regulatory agencies for product candidates; • estimating the timing of and future net cash flows from product sales resulting from completed products and in-process projects; and • developing appropriate discount rates to calculate the present values of the cash flows.
See Part IV—Note 10, Investments; Note 16, Financing arrangements; and Note 17, Stockholders’ equity, to the Consolidated Financial Statements. 75 Capital requirements We have material cash requirements to pay third parties under various contractual obligations discussed below.
See Part IV—Note 10, Investments; Note 16, Financing arrangements; and Note 17, Stockholders’ equity, to the Consolidated Financial Statements. Capital requirements We have material cash requirements to pay third parties under various contractual obligations discussed below.
We helped launch the biotechnology industry more than 40 years ago and have grown to be one of the world’s leading independent biotechnology companies. Our robust pipeline includes potential first-in-class medicines at all stages of development. Our principal products are Prolia, ENBREL, XGEVA, Repatha, Otezla, TEPEZZA, EVENITY, KYPROLIS, Nplate, Aranesp, BLINCYTO, KRYSTEXXA, Vectibix and TEZSPIRE.
We helped launch the biotechnology industry more than 45 years ago and have grown to be one of the world’s leading independent biotechnology companies. Our robust pipeline includes potential first-in-class medicines at all stages of development. Our principal products are Prolia, Repatha, Otezla, ENBREL, EVENITY, XGEVA, TEPEZZA, BLINCYTO, Nplate, TEZSPIRE, KYPROLIS, Aranesp, KRYSTEXXA and Vectibix.
We must grow sales from existing and new products to achieve revenue growth and to offset revenue losses caused by products’ loss of their exclusivity or launches of competing products. For example, our patents for RANKL antibodies, including sequences, for Prolia and XGEVA expire in February 2025 in the United States and in November 2025 in select countries in Europe.
We must grow sales from existing and new products to achieve revenue growth and to offset revenue losses caused by products’ loss of their exclusivity or launches of competing products. For example, our patents for RANKL antibodies, including sequences, for Prolia and XGEVA expired in February 2025 in the United States and in November 2025 in select countries in Europe.
For information on scheduled debt maturities and payments under derivative contracts associated with our long-term debt obligations, see Part IV—Note 16, Financing arrangements, and Note 19, Derivative instruments, to the Consolidated Financial Statements. We are obligated to make payments for operating leases, including rental commitments on abandoned leases and leases that have not yet commenced.
For information on scheduled debt maturities and payments under derivative contracts associated with our long-term debt obligations, see Part IV—Note 16, Financing arrangements, and Note 19, Derivative instruments, to the Consolidated Financial Statements. We are obligated to make payments for operating leases, including rental commitments on unoccupied leases and leases that have not yet commenced.
The carrying values of our long-term borrowings are net of fair value adjustments for interest rate swaps and unamortized discounts, premiums and offering costs. As of December 31, 2024, S&P, Moody’s and Fitch assigned credit ratings to our outstanding senior notes of BBB+, Baa1 and BBB, respectively, which are considered investment grade.
The carrying values of our long-term borrowings are net of fair value adjustments for interest rate swaps and unamortized discounts, premiums and offering costs. As of December 31, 2025, S&P, Moody’s and Fitch assigned credit ratings to our outstanding senior notes of BBB+, Baa1 and BBB+, respectively, which are considered investment grade.
Annual commitment fees for this agreement are 0.09% of the unused portion of the facility based on our current credit rating.
Annual commitment fees for this agreement are 0.09% of the 74 unused portion of the facility based on our current credit rating.
We were in compliance with all applicable covenants under these arrangements as of December 31, 2024. These financing arrangements are more fully discussed in Part IV—Note 16, Financing arrangements, and Note 19, Derivative instruments, to the Consolidated Financial Statements.
We were in compliance with all applicable covenants under these arrangements as of December 31, 2025. These financing arrangements are more fully discussed in Part IV—Note 16, Financing arrangements, and Note 19, Derivative instruments, to the Consolidated Financial Statements.
During 2024, 2023 and 2022, we did not issue any commercial paper. No commercial paper was outstanding as of December 31, 2024 and 2023. In 2023, we amended and restated our syndicated, unsecured, revolving credit agreement, under which we may borrow up to $4.0 billion for general corporate purposes, including as a liquidity backstop for our commercial paper program.
We did not issue any commercial paper during 2025, 2024 or 2023, and no commercial paper was outstanding as of December 31, 2025 and 2024. In 2023, we amended and restated our syndicated, unsecured, revolving credit agreement, under which we may borrow up to $4.0 billion for general corporate purposes, including as a liquidity backstop for our commercial paper program.
We intend to continue investing in our business while reducing our debt and returning capital to stockholders through the payment of cash dividends and stock repurchases. This reflects our desire to optimize our cost of capital and our confidence in the future cash flows of our business.
We intend to continue investing in our business while returning capital to stockholders through the payment of cash dividends and stock repurchases. This reflects our desire to optimize our cost of capital and our confidence in the future cash flows of our business.
Additionally, with public and private healthcare-provider focus, the industry continues to be subject to cost containment measures and significant pricing pressures, resulting in net price declines. Moreover, provisions of the IRA, as well as the 340B Program, have affected, and are likely to continue to affect, our business.
Additionally, with public and private healthcare-provider focus, the industry continues to be subject to cost containment measures and significant pricing pressures, resulting in net price declines. Moreover, provisions of the IRA, as well as the expanded utilization of the 340B Program, have negatively affected, and are likely to continue to negatively affect, our business.
In addition, the timing and amount of stock repurchases may also be affected by our overall level of cash, stock price and blackout periods, during which we are restricted from repurchasing stock. The manner of stock repurchases may include block purchases, tender offers, ASRs and market transactions.
In addition, the timing and amount of stock repurchases may also be affected by our overall level of cash, stock price and blackout periods, during which we are restricted from repurchasing stock. The manner of stock repurchases may include block purchases, tender offers, accelerated share repurchases and market transactions.
The 2023 net unrealized gains on our strategic equity investments were principally composed of amounts recognized on our BeiGene investment in the first quarter of 2023 as a result of a change from the equity method of accounting to recording this investment at fair value with changes in fair value recognized in earnings.
The 2023 net unrealized gains on equity investments were principally composed of amounts recognized on our BeOne investment in the first quarter of 2023 as a result of a change from the equity method of accounting to recording this investment at fair value with changes in fair value recognized in earnings.
As of both December 31, 2024 and 2023, we had interest rate swap contracts with an aggregate notional amount of $6.7 billion.
As of both December 31, 2025 and 2024, we had interest rate swap contracts with an aggregate notional amount of $6.7 billion.
As KRYSTEXXA was acquired on October 6, 2023, there were no recorded product sales in the periods prior to the acquisition date.
As KRYSTEXXA was acquired on October 6, 2023, there were no recorded product sales in the period prior to the acquisition date.
We continue to believe our accrual for income tax liabilities is appropriate based on past experience, interpretations of tax law, application of the tax law to our facts and judgments about potential actions by tax authorities; however, due to the complexity of the provision for income taxes and uncertain resolution of these matters, the ultimate outcome of any tax matters may result in payments substantially greater than amounts accrued and could have a material adverse impact on our consolidated financial statements. 72 See Part I, Item 1A.
We continue to believe our accrual for income tax liabilities is appropriate based on past experience, interpretations of tax law, application of the tax law to our facts and judgments about potential actions by tax authorities; however, due to the complexity of the provision for income taxes and uncertain resolution of these matters, the ultimate outcome of any tax matters may result in payments substantially greater than amounts accrued and could have a material adverse impact on our consolidated financial statements.
Research and development The Company groups all of its R&D activities and related expenditures into three categories: (i) research and early pipeline, (ii) later-stage clinical programs and (iii) marketed products.
Research and development The Company groups all of its R&D activities and related expenditures into three categories: (i) Research and Early Pipeline, (ii) Later-Stage Clinical Programs and (iii) Marketed Product Support.
Any additional tax that could be imposed for the years 2013–2015 would be reduced by up to approximately $2.2 billion of repatriation tax previously accrued on our foreign earnings. We firmly believe that the IRS positions set forth in the 2010–2012 and 2013–2015 Notices are without merit. We are contesting the 2010–2012 and 2013–2015 Notices through the judicial process.
Any additional tax that could be imposed for the years 2013–2015 would be reduced by up to approximately $2.2 billion of repatriation tax previously accrued and paid on our foreign earnings. We firmly believe that the IRS positions set forth in the 2010–2012 and 2013–2015 Notices are without merit.
Any additional tax that could be imposed for the years 2013–2015 would be reduced by up to approximately $2.2 billion of repatriation tax previously accrued on our foreign earnings. We firmly believe that the IRS positions set forth in the 2010–2012 and 2013–2015 Notices are without merit. We are contesting the 2010–2012 and 2013–2015 Notices through the judicial process.
Any additional tax that could be imposed for the years 2013–2015 would be reduced by up to approximately $2.2 billion of repatriation tax previously accrued and paid on our foreign earnings. We firmly believe that the IRS positions set forth in the 2010–2012 and 2013–2015 Notices are without merit.
We also market a number of other products, including but not limited to AMJEVITA/AMGEVITA, MVASI, Neulasta, RAVICTI, UPLIZNA, Parsabiv, LUMAKRAS/LUMYKRAS, Aimovig, TAVNEOS, PROCYSBI, EPOGEN and IMDELLTRA. For additional information about our products, see Part I, Item 1. Business—Marketing, Distribution and Selected Marketed Products.
We also market a number of other products, including but not limited to MVASI, PAVBLU, UPLIZNA, IMDELLTRA/IMDYLLTRA, AMJEVITA/AMGEVITA, TAVNEOS, Neulasta, LUMAKRAS/LUMYKRAS, RAVICTI, Parsabiv, Aimovig, WEZLANA/WEZENLA and PROCYSBI. For additional information about our products, see Part I, Item 1. Business—Marketing, Distribution and Selected Marketed Products.
Risk Factors— Global economic conditions may negatively affect us and may magnify certain risks that affect our business . Financing arrangements To help meet our liquidity requirements, we have entered into various financing arrangements. The noncurrent portions of our long-term borrowings as of December 31, 2024 and 2023, were $56.5 billion and $63.2 billion, respectively.
Risk Factors— Global economic conditions may negatively affect us and may magnify certain risks that affect our business . Financing arrangements To help meet our liquidity requirements, we have entered into various financing arrangements. The noncurrent portions of our long-term borrowings as of December 31, 2025 and 2024, were $50.0 billion and $56.5 billion, respectively.
As of December 31, 2024 and 2023, no amounts were outstanding under this facility.
As of December 31, 2025 and 2024, no amounts were outstanding under this facility.
As of December 31, 2024, we have purchase obligations of $5.7 billion primarily related to (i) R&D commitments (including those related to clinical trials) for new and existing products, (ii) capital expenditures and (iii) open purchase orders for the acquisition of goods and services in the ordinary course of business.
As of December 31, 2025, we have purchase obligations of approximately $6.9 billion primarily related to (i) R&D commitments (including those related to clinical trials) for new and existing products, (ii) capital expenditures and (iii) open purchase orders for the acquisition of goods and services in the ordinary course of business.
Except with respect to the fair value of the contingent consideration of approximately $106 million as of December 31, 2024, these obligations are not recorded on our Consolidated Balance Sheets. As of December 31, 2024, the maximum amount that may be payable in the future for agreements we have entered into with third parties is $5.6 billion.
Except with respect to the fair value of the contingent consideration of approximately $161 million as of December 31, 2025, these obligations are not recorded on our Consolidated Balance Sheets. As of December 31, 2025, the maximum amount that may be payable in the future for agreements we have entered into with third parties is approximately $7.2 billion.
Further, the first quarter of a year historically represents the lowest product sales quarter for the year, in part due to plan changes, insurance reverifications and higher co-pay expenses as U.S. patients work through deductibles, particularly for products acquired through pharmacy benefit programs.
Further, the first quarter of a year historically represents the lowest product sales quarter for the year, in part due to plan changes, insurance reverifications and higher co-pay expenses as U.S. patients work through deductibles, including for ENBREL and Otezla, and to a lesser extent for KRYSTEXXA, TEZSPIRE and Repatha, particularly for products acquired through pharmacy benefit programs.
These are ongoing adjustments that are likely to occur in the future. We are a vertically integrated enterprise with operations in the United States and various foreign jurisdictions. In the jurisdictions where we conduct operations, we are subject to income tax based on the tax laws and principles of such jurisdictions and on the functions, risks and activities performed therein.
We are a vertically integrated enterprise with operations in the United States and various foreign jurisdictions. In the jurisdictions where we conduct operations, we are subject to income tax based on the tax laws and principles of such jurisdictions and on the functions, risks and activities performed therein.
Financing Cash used in financing activities during 2024 was primarily due to the payment of dividends of $4.8 billion, the repayment and extinguishment of debt of $3.6 billion and $659 million, respectively, and payments to repurchase our common stock of $200 million.
Financing Cash used in financing activities during 2025 was primarily due to the repayment and extinguishment of debt of $5.0 billion and $683 million, respectively, and the payment of dividends of $5.1 billion. 75 Cash used in financing activities during 2024 was primarily due to the payment of dividends of $4.8 billion, the repayment and extinguishment of debt of $3.6 billion and $659 million, respectively, and payments to repurchase common stock of $200 million.
Cash flows Our summarized cash flow activity was as follows (in millions): Years ended December 31, 2024 2023 2022 Net cash provided by operating activities $ 11,490 $ 8,471 $ 9,721 Net cash used in investing activities $ (1,046) $ (26,204) $ (6,044) Net cash (used in) provided by financing activities $ (9,415) $ 21,048 $ (4,037) Operating Cash provided by operating activities has been and is expected to continue to be our primary recurring source of funds.
Cash flows Our summarized cash flow activity was as follows (in millions): Years ended December 31, 2025 2024 2023 Net cash provided by operating activities $ 9,958 $ 11,490 $ 8,471 Net cash used in investing activities $ (1,943) $ (1,046) $ (26,204) Net cash (used in) provided by financing activities $ (10,859) $ (9,415) $ 21,048 Operating Cash provided by operating activities has been and is expected to continue to be our primary recurring source of funds.
In December 2024, the Board of Directors declared a cash dividend of $2.38 per share of common stock for the first quarter of 2025, an increase of 6% over the same period in the prior year, to be paid in March 2025. We also returned capital to stockholders through our stock repurchase program.
In December 2025, the Board of Directors declared a cash dividend of $2.52 per share of common stock for the first quarter of 2026, an increase of 6% over the same period in the prior year, which will be paid in March 2026. 73 We also return capital to stockholders through our stock repurchase program.
Vectibix Total Vectibix sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2024 Change Year ended December 31, 2023 Change Year ended December 31, 2022 Vectibix — U.S. $ 519 13 % $ 461 16 % $ 396 Vectibix — ROW 526 1 % 523 5 % 497 Total Vectibix $ 1,045 6 % $ 984 10 % $ 893 The increase in global Vectibix sales for 2024 was driven by higher net selling price of 8% and volume growth of 4%, partially offset by unfavorable changes to foreign currency exchange rates.
Vectibix Total Vectibix sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2025 Change Year ended December 31, 2024 Change Year ended December 31, 2023 Vectibix — U.S. $ 604 16 % $ 519 13 % $ 461 Vectibix — ROW 571 9 % 526 1 % 523 Total Vectibix $ 1,175 12 % $ 1,045 6 % $ 984 The increase in global Vectibix sales for 2025 was primarily driven by volume growth. 68 The increase in global Vectibix sales for 2024 was driven by higher net selling price of 8% and volume growth of 4%, partially offset by unfavorable changes to foreign currency exchange rates.
In 2017, we received an RAR and a modified RAR from the IRS for the years 2010–2012, proposing significant adjustments that primarily relate to the allocation of profits between certain of our entities in the United States and the U.S. territory of Puerto Rico.
The legislation has multiple effective dates, with certain provisions effective in 2026 and beyond. In 2017, we received an RAR and a modified RAR from the IRS for the years 2010–2012, proposing significant adjustments that primarily relate to the allocation of profits between certain of our entities in the United States and the U.S. territory of Puerto Rico.
The increase in global Prolia sales for 2023 was primarily driven by volume growth and higher net selling price. 64 As disclosed in Part I, Item 1. Business—Marketing, Distribution and Selected Marketed Products—Patents, our patents for RANKL antibodies, including sequences, for Prolia expire in February 2025 in the United States and in November 2025 in select countries in Europe.
The increase in global XGEVA sales for 2024 was driven by higher net selling price. As disclosed in Part I, Item 1. Business—Marketing, Distribution and Selected Marketed Products, our patents for RANKL antibodies, including sequences, for XGEVA expired in February 2025 in the United States and in November 2025 in select countries in Europe.
The Board of Directors declared quarterly cash dividends of $2.25, $2.13 and $1.94 per share of common stock paid in 2024, 2023 and 2022, respectively, reflecting year-over-year increases of 6% and 10% for 2024 and 2023, respectively.
The Board of Directors declared quarterly cash dividends of $2.38, $2.25 and $2.13 per share of common stock paid in 2025, 2024 and 2023, respectively, reflecting year-over-year increases of 6% for both 2025 and 2024.
Includes clinical trials designed to gather information on product safety (certain of which may be required by regulatory authorities) and their product characteristics after regulatory approval has been obtained, as well as the costs of obtaining regulatory approval of a product in a new market after approval in either the United States or the EU has been obtained 70 R&D expense by category was as follows (in millions): Years ended December 31, 2024 2023 2022 Research and early pipeline $ 1,534 $ 1,584 $ 1,611 Later-stage clinical programs 2,830 1,898 1,627 Marketed products 1,600 1,302 1,196 Total R&D expense $ 5,964 $ 4,784 $ 4,434 The increase in R&D expense for 2024 was driven by higher spend in later-stage clinical programs and marketed product support, including Horizon-acquired programs.
Includes clinical trials designed to gather information on product safety (certain of which may be required by regulatory authorities) and their product characteristics after regulatory approval has been obtained, as well as the costs of obtaining regulatory approval of a product in a new market after approval in either the United States or the EU has been obtained 70 R&D expense by category was as follows (in millions): Years ended December 31, 2025 2024 2023 Research and Early Pipeline $ 1,732 $ 1,534 $ 1,584 Later-Stage Clinical Programs 4,281 2,830 1,898 Marketed Product Support 1,259 1,600 1,302 Total R&D expense $ 7,272 $ 5,964 $ 4,784 The increase in R&D expense for 2025 was driven by investments in Later-Stage Clinical Programs, including those related to MariTide, and in Research and Early Pipeline, partially offset by lower spend in Marketed Product Support.
For the years ended December 31, 2024, 2023 and 2022, total sales deductions were 52%, 53% and 51% of gross product sales, respectively. The increase in the total sales deductions balance as of December 31, 2024, compared with December 31, 2023, was primarily driven by higher gross sales.
For the years ended December 31, 2025, 2024 and 2023, total sales deductions were 54%, 52% and 53% of gross product sales, respectively. The increase in the total sales deductions balance as of December 31, 2025, compared with December 31, 2024, was primarily driven by an increase in gross sales and timing of payments.
The increase in global Repatha sales for 2023 was driven by volume growth, partially offset by lower net selling price. 65 For 2025, we expect lower declines in net selling price. For a discussion of ongoing litigation related to Repatha, see Part IV—Note 20, Contingencies and commitments, to the Consolidated Financial Statements.
The increase in global Repatha sales for 2024 was primarily driven by volume growth of 43%, partially offset by lower net selling price of 10%. For a discussion of ongoing litigation related to Repatha, see Part IV—Note 20, Contingencies and commitments, to the Consolidated Financial Statements.
A majority of the increase in expenditures relates to expansion of manufacturing capacity to enable supply of products and product candidates.
A majority of the increase in expenditures relates to construction costs for new plants and expansion of manufacturing capacity to enable supply of products and product candidates.
Risk Factors— We could be subject to additional tax liabilities, including from an adverse outcome in our ongoing tax dispute with the IRS and other tax examinations, enactment of the OECD minimum corporate tax rate agreement and the adoption and interpretation of new tax legislation, and we anticipate additional tax liabilities from certain provisions of the 2017 Tax Act that will go into effect in 2026; such tax liabilities could adversely affect our profitability and results of operations.
Risk Factors— We could be subject to additional tax liabilities, including from an adverse outcome in our ongoing tax dispute with the IRS and other tax examinations, enactment of the OECD minimum corporate tax rate agreement and the adoption and interpretation of new tax legislation, including OB3. Such tax liabilities could adversely affect our profitability and results of operations.
To hedge our exposure to foreign currency exchange rate risk associated with certain of our long-term notes denominated in foreign currencies, we entered into cross-currency swap contracts, which effectively convert the interest payments and principal repayment of the respective notes from euros, pounds sterling and Swiss francs to U.S. dollars.
To hedge our exposure to foreign currency exchange rate risk associated with certain of our long-term notes denominated in foreign currencies, we entered into cross-currency swap contracts, which effectively converted the interest payments and principal repayment of the respective notes from euros and pounds sterling to U.S. dollars. These cross-currency swap contracts qualify and are designated as cash flow hedges.
To continue on our path to greater environmental sustainability, in January 2021 we announced a new set of long-term environmental targets to achieve by 2027, including achieving carbon neutrality, reducing water consumption by 40% and reducing waste disposed by 75%. 2,3 Our long-term success depends, to a great extent, on our ability to continue to discover, develop and commercialize innovative products and acquire or collaborate on therapies currently in development by other companies.
As part of our environmental sustainability efforts, we have established long-term targets to meet by 2027, including achieving carbon neutrality, reducing water consumption by 40% and reducing waste disposed by 75%. 2,3 Our long-term success depends, to a great extent, on our ability to continue to discover, develop and commercialize innovative products and acquire or collaborate on therapies currently in development by other companies.
Cash used in investing activities during 2023 was primarily due to $27.0 billion of net cash used for the purchase of Horizon and $1.1 billion of capital expenditures, partially offset by net cash inflows related to marketable securities of $1.7 billion.
Cash used in investing activities during 2023 was primarily due to $27.0 billion of net cash used for the purchase of Horizon and $1.1 billion of capital expenditures, partially offset by net cash inflows related to marketable securities of $1.7 billion. We currently estimate 2026 investments in capital projects to be approximately $2.6 billion.
Tax Court to contest a Notice for the years 2013–2015 that we previously reported receiving in April 2022 that seeks to increase our U.S. taxable income for the years 2013–2015 by an amount that would result in additional federal tax of approximately $5.1 billion, plus interest. In addition, the Notice asserts penalties of approximately $2.0 billion.
The Notice seeks to increase our U.S. taxable income for the years 2013–2015 by an amount that would result in additional federal tax of approximately $5.1 billion, plus interest, and asserts penalties of approximately $2.0 billion.
Tax Court to contest a Notice for the years 2013–2015 that we previously reported receiving in April 2022 that seeks to increase our U.S. taxable income for the years 2013–2015 by an amount that would result in additional federal tax of approximately $5.1 billion, plus interest. In addition, the Notice asserts penalties of approximately $2.0 billion.
The Notice seeks to increase our U.S. taxable income for the years 2013–2015 by an amount that would result in additional federal tax of approximately $5.1 billion, plus interest, and asserts penalties of approximately $2.0 billion.
Excluding the U.S. government orders from this comparison, global Nplate sales increased 12% for 2024, driven by volume growth of 8% and higher net selling price of 6%. The increase in global Nplate sales for 2023 was primarily driven by volume growth, including U.S. government orders totaling $286 million.
Excluding the U.S. government orders from this comparison, global Nplate sales increased 12% for 2024, driven by volume growth of 8% and higher net selling price of 6%.
Amounts recorded in Accrued liabilities in the Consolidated Balance Sheets for sales deductions were as follows (in millions): Rebates Chargebacks Other deductions Total Balance as of December 31, 2021 $ 4,147 $ 797 $ 230 $ 5,174 Amounts charged against product sales 12,500 10,630 2,288 25,418 Payments (11,768) (10,578) (2,260) (24,606) Balance as of December 31, 2022 4,879 849 258 5,986 Additions (1) 263 24 39 326 Amounts charged against product sales 14,328 13,349 2,533 30,210 Payments (13,634) (13,125) (2,492) (29,251) Balance as of December 31, 2023 5,836 1,097 338 7,271 Amounts charged against product sales 17,404 14,882 3,060 35,346 Payments (16,423) (14,817) (2,972) (34,212) Balance as of December 31, 2024 $ 6,817 $ 1,162 $ 426 $ 8,405 ____________ (1) Represents sales deductions assumed from the Horizon acquisition.
Amounts recorded in Accrued liabilities in the Consolidated Balance Sheets for sales deductions were as follows (in millions): Rebates Chargebacks Other deductions Total Balance as of December 31, 2022 $ 4,879 $ 849 $ 258 $ 5,986 Additions (1) 263 24 39 326 Amounts charged against product sales 14,328 13,349 2,533 30,210 Payments (13,634) (13,125) (2,492) (29,251) Balance as of December 31, 2023 5,836 1,097 338 7,271 Amounts charged against product sales 17,404 14,882 3,060 35,346 Payments (16,423) (14,817) (2,972) (34,212) Balance as of December 31, 2024 6,817 1,162 426 8,405 Amounts charged against product sales 21,697 16,988 3,298 41,983 Payments (19,675) (16,852) (3,255) (39,782) Balance as of December 31, 2025 $ 8,839 $ 1,298 $ 469 $ 10,606 ____________ (1) Represents sales deductions assumed from the Horizon acquisition.
Under this shelf registration statement, all of the securities available for issuance may be offered from time to time, with terms to be determined at the time of issuance. This shelf registration statement expires in February 2026. 74 Certain of our financing arrangements contain nonfinancial covenants.
Under this shelf registration statement, all of the securities available for issuance may be offered from time to time, with terms to be determined at the time of issuance. This shelf registration statement expired in February 2026, and our Board has approved a new shelf registration statement to replace it. Certain of our financing arrangements contain nonfinancial covenants.
For 2024, we increased our quarterly cash dividend by 6% to $2.25 per share of common stock. In December 2024, the Board of Directors declared a cash dividend of 61 $2.38 per share of common stock for the first quarter of 2025, an increase of 6% over the same period in the prior year, to be paid in March 2025.
In December 2025, the Board of Directors declared a cash dividend of $2.52 per share of common stock for the first quarter of 2026, an increase of 6% over the same period in the prior year, to be paid in March 2026.
Other operating expenses for 2023 primarily consisted of a net IPR&D intangible asset impairment charge for AMG 340 and expenses related to our restructuring plan that were both initiated and substantially completed in 2023. Other operating expenses for 2022 primarily consisted of a loss on the divestiture of Gensenta.
Other operating expenses for 2023 included a net IPR&D intangible asset impairment charge for AMG 340 and expenses related to our restructuring plan that were both initiated and substantially completed in 2023.
We expect to continue to grow our spend on later-stage clinical programs as we advance our pipeline. The increase in R&D expense for 2023 was driven by higher spend in later-stage clinical programs and marketed product support, including Horizon-acquired programs.
This increase includes the impact of business development activities in 2025. The increase in R&D expense for 2024 was driven by investments in Later-Stage Clinical Programs and Marketed Product Support, including Horizon-acquired programs. We expect to continue to grow our spend on Later-Stage Clinical Programs as we advance our pipeline.
Nplate Total Nplate sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2024 Change Year ended December 31, 2023 Change Year ended December 31, 2022 Nplate — U.S. $ 970 (3) % $ 996 17 % $ 848 Nplate — ROW 486 1 % 481 5 % 459 Total Nplate $ 1,456 (1) % $ 1,477 13 % $ 1,307 Global Nplate sales for 2024 decreased 1% and included U.S. government orders of $128 million and $286 million for 2024 and 2023, respectively.
Nplate Total Nplate sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2025 Change Year ended December 31, 2024 Change Year ended December 31, 2023 Nplate — U.S. $ 1,027 6 % $ 970 (3) % $ 996 Nplate — ROW 497 2 % 486 1 % 481 Total Nplate $ 1,524 5 % $ 1,456 (1) % $ 1,477 Global Nplate sales for 2025 increased 5% and included U.S. government orders of $90 million and $128 million for 2025 and 2024, respectively.
Investing Cash used in investing activities during 2024 was primarily due to $1.1 billion of capital expenditures, including construction costs for new plants in North Carolina and Ohio.
Investing Cash used in investing activities during 2025 and 2024 was primarily due to $1.9 billion and $1.1 billion, respectively, of capital expenditures, including construction costs for new plants and expansion of manufacturing capacity.
The increase in global KYPROLIS sales for 2023 was driven by volume growth.
The increase in global KYPROLIS sales for 2024 was driven by volume growth outside the United States.
Tax Court to contest two duplicate Statutory Notices of Deficiency (Notices) for the years 2010–2012 that we received in May and July 2021, which seek to increase our U.S. taxable income for the years 2010–2012 by an amount that would result in additional federal tax of approximately $3.6 billion plus interest.
The Notices seek to increase our U.S. taxable income for the years 2010–2012 by an amount that would result in additional federal tax of approximately $3.6 billion plus interest.
While it is not possible to accurately predict or determine the eventual outcomes of these items, an adverse determination in one or more of these items currently pending could have a material adverse effect on our consolidated results of operations, financial position or cash flows. 79 Valuation of assets and liabilities in connection with acquisitions We have acquired and continue to acquire intangible assets in connection with business combinations and asset acquisitions.
While it is not possible to accurately predict or determine the eventual outcomes of these items, an adverse determination in one or more of these items currently pending could have a material adverse effect on our consolidated results of operations, financial position or cash flows.
In addition, any reference to increases or decreases in inventory refers to changes in inventory held by wholesaler customers and end users (such as pharmacies). Total product sales increased 19% in 2024, primarily driven by volume growth of 23%, partially offset by declines in net selling price of 2%. U.S. volume grew 26% and ROW volume grew 17%.
In addition, any reference to increases or decreases in inventory refers to changes in inventory held by wholesaler customers and end users (such as pharmacies). Total product sales increased 10% in 2025, driven by volume growth of 13%, partially offset by declines in net selling price of 3%.
Management’s Discussion and Analysis or Financial Condition and Results of Operations—Critical Accounting Policies and Estimates, Income taxes; and Part IV—Note 7, Income taxes, to the Consolidated Financial Statements for further discussion.
Such tax liabilities could adversely affect our profitability and results of operations; Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates— Income taxes ; and Part IV—Note 7, Income taxes, to the Consolidated Financial Statements for further discussion.
ENBREL Total ENBREL sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2024 Change Year ended December 31, 2023 Change Year ended December 31, 2022 ENBREL — U.S. $ 3,288 (10) % $ 3,650 (10) % $ 4,044 ENBREL — Canada 28 (40) % 47 (36) % 73 Total ENBREL $ 3,316 (10) % $ 3,697 (10) % $ 4,117 The decrease in ENBREL sales for 2024 was driven by lower net selling price.
ENBREL Total ENBREL sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2025 Change Year ended December 31, 2024 Change Year ended December 31, 2023 ENBREL — U.S. $ 2,199 (33) % $ 3,288 (10) % $ 3,650 ENBREL — Canada 27 (4) % 28 (40) % 47 Total ENBREL $ 2,226 (33) % $ 3,316 (10) % $ 3,697 The decrease in ENBREL sales for 2025 was primarily driven by lower net selling price of 36% resulting from the impact of increased 340B Program mix, U.S.
(2) 916 34 % 685 5 % 650 Other — ROW (2) 217 3 % 210 (31) % 305 Total other product sales $ 5,630 20 % $ 4,696 (7) % $ 5,050 Total U.S. — other products $ 4,037 22 % $ 3,307 (8) % $ 3,606 Total ROW — other products 1,593 15 % 1,389 (4) % 1,444 Total other product sales $ 5,630 20 % $ 4,696 (7) % $ 5,050 N/A = not applicable * Change in excess of 100% ____________ (1) RAVICTI, UPLIZNA and PROCYSBI were acquired from our Horizon acquisition on October 6, 2023, and include product sales in the periods after the acquisition date.
(2) 895 (11) % 1,010 11 % 911 Other — ROW (2) 203 7 % 190 (10) % 210 Total other product sales $ 7,263 29 % $ 5,630 20 % $ 4,696 Total U.S. — other products $ 5,437 35 % $ 4,037 22 % $ 3,307 Total ROW — other products 1,826 15 % 1,593 15 % 1,389 Total other product sales $ 7,263 29 % $ 5,630 20 % $ 4,696 * Change in excess of 100% N/A = not applicable ____________ (1) UPLIZNA, RAVICTI and PROCYSBI were acquired from our Horizon acquisition on October 6, 2023, and include product sales in the periods after the acquisition date.
As disclosed in Part I, Item 1. Business—Marketing, Distribution and Selected Marketed Products—Patents, our patents for RANKL antibodies, including sequences, for XGEVA expire in February 2025 in the United States and in November 2025 in select countries in Europe. For 2025, we expect sales erosion driven by biosimilar competition.
The increase in global Prolia sales for 2024 was driven by volume growth. As disclosed in Part I, Item 1. Business—Marketing, Distribution and Selected Marketed Products, our patents for RANKL antibodies, including sequences, for Prolia expired in February 2025 in the United States and in November 2025 in select countries in Europe.
Nonoperating expenses/income and income taxes Nonoperating expenses/income and income taxes were as follows (dollar amounts in millions): Years ended December 31, 2024 2023 2022 Interest expense, net $ (3,155) $ (2,875) $ (1,406) Other income (expense), net $ 506 $ 2,833 $ (814) Provision for income taxes $ 519 $ 1,138 $ 794 Effective tax rate 11.3 % 14.5 % 10.8 % Interest expense, net The increases in Interest expense, net, in 2024 and 2023 over the respective prior years were primarily due to higher average debt outstanding and higher weighted-average fixed and floating interest rates on the debt.
Nonoperating expenses/income and income taxes Nonoperating expenses/income and income taxes were as follows (dollar amounts in millions): Years ended December 31, 2025 2024 2023 Interest expense, net $ (2,755) $ (3,155) $ (2,875) Other income, net $ 2,651 $ 506 $ 2,833 Provision for income taxes $ 1,265 $ 519 $ 1,138 Effective tax rate 14.1 % 11.3 % 14.5 % Interest expense, net The decrease in Interest expense, net, for 2025 was primarily due to lower average debt outstanding driven by deleveraging and, to a lesser extent, lower weighted-average fixed and floating interest rates on the debt.
These cross-currency swap contracts qualify and are designated as cash flow hedges. As of both December 31, 2024 and 2023, we had cross-currency swap contracts with an aggregate notional amount of $2.7 billion. As of December 31, 2024, our commercial paper program allows us to issue up to $2.5 billion of unsecured commercial paper to fund our working capital needs.
As of both December 31, 2025 and 2024, we had cross-currency swap contracts with an aggregate notional amount of $2.7 billion. In 2025, we increased the capacity of our commercial paper program from $2.5 billion to $4.0 billion, which allows us to issue up to $4.0 billion of unsecured commercial paper to fund working capital needs.
Management’s Discussion and Analysis of Financial Condition and Results of Operations—Results of Operations, Income taxes; and Part IV—Note 7, Income taxes, to the Consolidated Financial Statements for further discussion.
Such tax liabilities could adversely affect our profitability and results of operations; Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Results of Operations—Income taxes; and Part IV—Note 7, Income taxes, to the Consolidated Financial Statements for further discussion.
(2) Consists of product sales of our non-principal products. Future sales of our products will depend in part on the factors discussed in the Overview, Part I, Item 1. Business—Marketing, Distribution and Selected Marketed Products—Competition, Part I, Item 1. Business—Reimbursement, Part I, Item 1A. Risk Factors, and any additional factors discussed in the individual product sections below.
(2) TEZSPIRE is marketed by our collaborator AstraZeneca outside the United States. (3) Consists of product sales of our non-principal products. Future sales of our products will depend in part on the factors discussed in the Overview, Part I, Item 1. Business—Marketing, Distribution and Selected Marketed Products— Competition , Part I, Item 1. Business—Reimbursement, Part I, Item 1A.
In 2020, we received an RAR and a modified RAR from the IRS for the years 2013–2015, also proposing significant adjustments that primarily relate to the allocation of profits between certain of our entities in the United States and the U.S. territory of Puerto Rico similar to those proposed for the years 2010–2012.
Any additional tax that could be imposed for the years 2010–2012 would be reduced by up to approximately $900 million of repatriation tax previously accrued and paid on our foreign earnings. 78 In 2020, we received an RAR and a modified RAR from the IRS for the years 2013–2015, also proposing significant adjustments that primarily relate to the allocation of profits between certain of our entities in the United States and the U.S. territory of Puerto Rico similar to those proposed for the years 2010–2012.
For 2025, we expect sales erosion driven by biosimilar competition. For a discussion of ongoing litigation related to Prolia, see Part IV—Note 20, Contingencies and commitments, to the Consolidated Financial Statements.
For 2026, we expect accelerated sales erosion driven by increased competition, as multiple biosimilars have launched in the United States and ROW. For a discussion of ongoing litigation related to Prolia, see Part IV—Note 20, Contingencies and commitments, to the Consolidated Financial Statements.
These intangible assets consist primarily of technology associated with currently marketed human therapeutic products and IPR&D product candidates. Discounted cash flow models are typically used to determine the fair values of these intangible assets for purposes of allocating consideration paid to the net assets acquired in an acquisition. See Part IV—Note 4, Acquisitions and divestitures, to the Consolidated Financial Statements.
Discounted cash flow models are typically used to determine the fair values of these intangible assets for purposes of allocating consideration paid to the net assets acquired in an acquisition. See Part IV—Note 4, Acquisition, to the Consolidated Financial Statements.
XGEVA Total XGEVA sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2024 Change Year ended December 31, 2023 Change Year ended December 31, 2022 XGEVA — U.S. $ 1,507 (1) % $ 1,527 3 % $ 1,480 XGEVA — ROW 718 23 % 585 10 % 534 Total XGEVA $ 2,225 5 % $ 2,112 5 % $ 2,014 The increases in global XGEVA sales for 2024 and 2023 were driven by higher net selling price.
XGEVA Total XGEVA sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2025 Change Year ended December 31, 2024 Change Year ended December 31, 2023 XGEVA — U.S. $ 1,355 (10) % $ 1,507 (1) % $ 1,527 XGEVA — ROW 729 2 % 718 23 % 585 Total XGEVA $ 2,084 (6) % $ 2,225 5 % $ 2,112 The decrease in global XGEVA sales for 2025 was driven by lower volume.
Our strategy is the integrated set of actions we take to improve our competitive position in the industry. In 2024, we advanced our innovative pipeline; generated strong sales growth across our product portfolio and regions; and expanded our world-class manufacturing network. We accomplished these objectives while maintaining a strategic and disciplined approach to capital allocation.
Our strategy is the integrated set of actions we take to improve our competitive position in the industry. In 2025, we generated strong sales growth across our product portfolio and regions; advanced our innovative pipeline; and continued to expand and enhance our world-class manufacturing network.
Income taxes The decrease in our effective tax rate for 2024 compared with 2023 was primarily due to a change in earnings mix, including the net unrealized impact of our strategic equity investments, partially offset by the deferred tax adjustments associated with U.S. minimum tax on the earnings of our foreign subsidiaries.
Income taxes The increase in our effective tax rate for 2025 compared with 2024 was primarily due to a change in earnings mix, including the net unrealized gains on equity investments compared to net unrealized losses on equity investments in the prior year, partially offset by the prior-year deferred tax adjustments associated with U.S. tax on the earnings of our foreign subsidiaries and the current year Otezla intangible asset impairment charges and related tax impacts.
Macroeconomic and other challenges Uncertain macroeconomic conditions, including the risk of inflation, tariffs or trade protection measures, higher interest rates and instability in the financial system, as well as rising healthcare costs, continue to pose challenges to our business. Further, ongoing geopolitical conflicts continue to create additional uncertainty in global macroeconomic conditions.
Macroeconomic and other challenges Uncertain macroeconomic conditions, including the risk of inflation, fluctuating interest rates and instability in the financial system, as well as rising healthcare costs, continue to pose challenges to our business.
Selling, general and administrative The increase in SG&A expense for 2024 was primarily driven by expenses from the acquired Horizon business and other commercial expenses, partially offset by lower acquisition-related expenses related to the Horizon acquisition incurred in 2024.
The increase in SG&A expense for 2024 was primarily driven by expenses from the acquired Horizon business and other commercial expenses, partially offset by lower acquisition-related expenses related to the Horizon acquisition incurred in 2024. Other Other operating expenses for 2025 included Otezla intangible asset impairment charges of $1.2 billion.
(2) Consists of product sales from (i) KANJINTI, RIABNI, AVSOLA, NEUPOGEN, Corlanor, IMLYGIC, BEKEMV, PAVBLU, WEZLANA/WEZENLA and Sensipar/Mimpara; and (ii) ACTIMMUNE, RAYOS, BUPHENYL, QUINSAIR, PENNSAID and DUEXIS in the periods after our Horizon acquisition on October 6, 2023. 69 Operating expenses Operating expenses were as follows (dollar amounts in millions): Year ended December 31, 2024 Change Year ended December 31, 2023 Change Year ended December 31, 2022 Cost of sales $ 12,858 52 % $ 8,451 32 % $ 6,406 % of product sales 40.1 % 31.4 % 25.8 % % of total revenues 38.5 % 30.0 % 24.3 % Research and development $ 5,964 25 % $ 4,784 8 % $ 4,434 % of product sales 18.6 % 17.8 % 17.9 % % of total revenues 17.8 % 17.0 % 16.8 % Selling, general and administrative $ 7,096 15 % $ 6,179 14 % $ 5,414 % of product sales 22.2 % 23.0 % 21.8 % % of total revenues 21.2 % 21.9 % 20.6 % Other $ 248 (72) % $ 879 75 % $ 503 Total operating expenses $ 26,166 29 % $ 20,293 21 % $ 16,757 Cost of sales Cost of sales increased to 38.5% of total revenues for 2024, driven by higher amortization expense from Horizon acquisition-related assets and, to a lesser extent, higher profit share and royalty expense, partially offset by the prior year impact of the 2022 Puerto Rico tax law change that replaced an excise tax with an income tax beginning in 2023.
(2) Consists of product sales from (i) AVSOLA, KANJINTI, EPOGEN, RIABNI, BKEMV/BEKEMV, IMLYGIC, NEUPOGEN, Corlanor and Sensipar/Mimpara; and (ii) ACTIMMUNE, BUPHENYL, RAYOS, QUINSAIR, DUEXIS, VIMOVO and PENNSAID in the periods after our Horizon acquisition on October 6, 2023. 69 Operating expenses Operating expenses were as follows (dollar amounts in millions): Year ended December 31, 2025 Change Year ended December 31, 2024 Change Year ended December 31, 2023 Cost of sales $ 12,037 (6) % $ 12,858 52 % $ 8,451 % of product sales 34.2 % 40.1 % 31.4 % % of total revenues 32.8 % 38.5 % 30.0 % Research and development $ 7,272 22 % $ 5,964 25 % $ 4,784 % of product sales 20.7 % 18.6 % 17.8 % % of total revenues 19.8 % 17.8 % 17.0 % Selling, general and administrative $ 7,050 (1) % $ 7,096 15 % $ 6,179 % of product sales 20.1 % 22.2 % 23.0 % % of total revenues 19.2 % 21.2 % 21.9 % Other $ 1,312 * $ 248 (72) % $ 879 Total operating expenses $ 27,671 6 % $ 26,166 29 % $ 20,293 * Change in excess of 100% Cost of sales Cost of sales decreased to 32.8% of total revenues for 2025, driven by lower amortization expense from acquisition-related assets, including the fair value step-up of inventory acquired from Horizon, and lower manufacturing costs, partially offset by higher profit share expense and changes in our sales mix.
Other Other operating expenses for 2024 primarily consisted of impairment charges associated with IPR&D intangible assets related to our Teneobio acquisition in 2021 and expenses related to cost-savings initiatives incurred in 2024.
See Part IV—Note 13, Goodwill and other intangible assets, to the Consolidated Financial Statements. Other operating expenses for 2024 included impairment charges associated with IPR&D intangible assets related to our Teneobio acquisition in 2021 and expenses related to cost-savings initiatives incurred in 2024.
Our accumulated deficit is not anticipated to affect our future ability to operate, repurchase stock, pay dividends or repay our debt given our expected continued profitability and strong financial position. 73 We believe that existing funds, cash generated from operations and existing sources of and access to financing are adequate to satisfy our needs for working capital, capital expenditure and debt service requirements as well as our plans to reduce debt, pay dividends and repurchase stock, and other business initiatives we plan to strategically pursue, including acquisitions and licensing activities.
We believe that existing funds, cash generated from operations and existing sources of and access to financing are adequate to satisfy our needs for working capital, capital expenditure and debt service requirements, pay dividends and repurchase stock, and other business initiatives we plan to strategically pursue, including acquisitions and licensing activities.
Repatha Total Repatha sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2024 Change Year ended December 31, 2023 Change Year ended December 31, 2022 Repatha — U.S. $ 1,139 44 % $ 793 30 % $ 608 Repatha — ROW 1,083 29 % 842 22 % 688 Total Repatha $ 2,222 36 % $ 1,635 26 % $ 1,296 The increase in global Repatha sales for 2024 was primarily driven by volume growth of 43%, partially offset by lower net selling price of 10%.
Repatha Total Repatha sales by geographic region were as follows (dollar amounts in millions): Year ended December 31, 2025 Change Year ended December 31, 2024 Change Year ended December 31, 2023 Repatha — U.S. $ 1,663 46 % $ 1,139 44 % $ 793 Repatha — ROW 1,353 25 % 1,083 29 % 842 Total Repatha $ 3,016 36 % $ 2,222 36 % $ 1,635 The increase in global Repatha sales for 2025 was driven by volume growth.
Financial Condition, Liquidity and Capital Resources Selected financial data was as follows (in millions): December 31, 2024 2023 Cash and cash equivalents $ 11,973 $ 10,944 Total assets $ 91,839 $ 97,154 Current portion of long-term debt $ 3,550 $ 1,443 Long-term debt $ 56,549 $ 63,170 Stockholders’ equity $ 5,877 $ 6,232 Cash and cash equivalents Our balance of cash and cash equivalents was $12.0 billion on December 31, 2024.
Financial condition, liquidity and capital resources Selected financial data was as follows (in millions): December 31, 2025 2024 Cash and cash equivalents $ 9,129 $ 11,973 Total assets $ 90,586 $ 91,839 Current portion of long-term debt $ 4,599 $ 3,550 Long-term debt $ 50,005 $ 56,549 Stockholders’ equity $ 8,658 $ 5,877 Cash and cash equivalents Our balance of cash and cash equivalents was $9.1 billion as of December 31, 2025.