Biggest changeThe year-over-year change in the provision for income taxes was primarily related to the timing and mix of income, and to the release of liabilities for uncertain tax positions in 2022. 54 Generics The following table sets forth the results of operations for our Generics segment (dollars in thousands): Years Ended December 31, Increase (Decrease) 2023 2022 $ % Net revenue $ 1,471,401 $ 1,432,073 $ 39,328 2.7% Cost of goods sold 913,869 896,031 17,838 2.0% Gross profit 557,532 536,042 21,490 4.0% Selling, general and administrative 119,912 109,781 10,131 9.2% Research and development 132,233 167,509 (35,276) (21.1)% In-process research and development impairment charges 26,500 12,970 13,530 104.3% Intellectual property legal development expenses 3,708 4,251 (543) (12.8)% Acquisition, transaction-related and integration expenses — 25 (25) (100.0)% Restructuring and other charges 211 821 (610) (74.3)% Insurance recoveries for property losses and associated expenses — (1,911) 1,911 (100.0)% (Credit) charges related to legal matters, net (64) 22,400 (22,464) (100.3)% Other operating income (1,138) (3,960) 2,822 (71.3)% Operating income $ 276,170 $ 224,156 $ 52,014 23.2% nm - not meaningful Net Revenue Generics net revenue for the year ended December 31, 2023 increased 2.7% as compared to the prior year, primarily due to new generic products launched in 2023 and 2022, which included biosimilars that contributed $62.6 million and new generic products that contributed $47.4 million, partially offset by price erosion.
Biggest changeIncome Taxes for additional information. 56 Affordable Medicines The following table sets forth the results of operations for our Affordable Medicines segment (dollars in thousands): Years Ended December 31, Change 2024 2023 $ % Net revenue $ 1,685,263 $ 1,471,401 $ 213,862 14.5% Cost of goods sold 1,011,363 913,869 97,494 10.7% Gross profit 673,900 557,532 116,368 20.9% Selling, general and administrative 129,578 119,912 9,666 8.1% Research and development 171,771 132,233 39,538 29.9% In-process research and development impairment charges — 26,500 (26,500) (100.0)% Intellectual property legal development expenses 5,685 3,708 1,977 53.3% Restructuring and other charges 70 211 (141) (66.8)% Charges (credit) related to legal matters, net 96,692 (64) 96,756 nm Other operating income — (1,138) 1,138 (100.0)% Operating income $ 270,104 $ 276,170 $ (6,066) (2.2)% nm - not meaningful Net Revenue Affordable Medicines net revenue for the year ended December 31, 2024 increased 14.5% as compared to the prior year, primarily due to new products launched in 2024 and 2023, which included biosimilars that contributed $59.7 million of year-over-year growth and other new products that contributed $144.1 million of year-over-year growth, and strong volume growth, partially offset by price erosion.
The timing and amount of payments may also be accelerated under certain conditions, such as a change of control or other early termination event, which could give rise to our obligation to make TRA payments in advance of tax benefits being realized. For further information, refer to Item 1A. Risk Factors and Note 7. Income Taxes .
The timing and amount of payments may also be accelerated under certain conditions, such as a change of control or other early termination event, which could give rise to our obligation to make TRA payments in advance of tax benefits being realized. For further information, refer to Item 1A. Risk Factors and Note 6. Income Taxes .
Annually, we are also required to calculate the amount of excess cash flow payments, as defined in our term loan agreements. Based on the results of the excess cash flows calculation for the years ended December 31, 2023, 2022 and 2021, no excess cash flows principal payments were required.
Annually, we are also required to calculate the amount of excess cash flow payments, as defined in our term loan agreements. Based on the results of the excess cash flows calculation for the years ended December 31, 2024, 2023 and 2022, no excess cash flows principal payments were required.
In-Process Research and Development Impairment Charges In process research and development (“IPR&D”) impairment charges of $30.8 million for the year ended December 31, 2023 were related to one Generics asset and one Specialty asset, both of which experienced adverse clinical trials results in the fourth quarter of 2023 and resulted in significantly lower than expected future cash flows.
In-Process Research and Development Impairment Charges In process research and development (“IPR&D”) impairment charges of $30.8 million for the year ended December 31, 2023 were related to one Affordable Medicines asset and one Specialty asset, both of which experienced adverse clinical trials results in the fourth quarter of 2023 and resulted in significantly lower than expected future cash flows.
Debt ), including $225.2 million of available capacity on our Amended New Revolving Credit Facility and $28.0 million of available capacity under the Amended Rondo Revolving Credit Facility as of December 31, 2023 . We believe these sources are sufficient to fund our planned operations, meet our interest and contractual obligations and provide sufficient liquidity over the next 12 months.
Debt ), including $495.2 million of available capacity on our Amended New Revolving Credit Facility and $28.0 million of available capacity under the Amended Rondo Revolving Credit Facility as of December 31, 2024 . We believe these sources are sufficient to fund our planned operations, meet our interest and contractual obligations and provide sufficient liquidity over the next 12 months.
(Credit) Charges Related to Legal Matters, Net For the year ended December 31, 2023, Generics credit related to legal matters, net was $(0.1) million, comprised of a $(10.0) million credit from the settlement of patent infringement matters, net of $3.9 million in charges associated with civil prescription opioid litigation, a $3.0 million charge for the settlement of a customer claim, and a $3.0 million charge for the settlement of commercial antitrust litigation.
For the year ended December 31, 2023, the Affordable Medicines credit related to legal matters, net was $(0.1) million , comprised of $10.0 million received from the settlement of patent infringement matters, net of $3.9 million in charges associated with civil prescription opioid litigation, a $3.0 million charge for the settlement of a customer claim, and a $3.0 million charge for the settlement of commercial antitrust litigation.
The primary objectives of our investment policy are liquidity and safety of principal. 58 Cash Flows For a discussion comparing of our cash flows for the fiscal years 2022 to 2021, see Cash Flows under
The primary objectives of our investment policy are liquidity and safety of principal. Cash Flows For a discussion comparing of our cash flows for the fiscal years 2023 to 2022, see Cash Flows under
Charges Related to Legal Matters, Net For the year ended December 31, 2023, charges related to legal matters, net was $1.8 million, comprised of $3.9 million in charges associated with Generics civil prescription opioid litigation, a $3.0 million charge for the settlement of a Generics customer claim, a $3.0 million charge for the settlement of Generics commercial antitrust litigation, and a $1.9 million charge for the settlement of a corporate stockholder derivative lawsuit, partially offset by a $10.0 million credit from the settlement of Generics patent infringement matters.
For the year ended December 31, 2023, charges related to legal matters, net of $1.8 million were comprised of $3.9 million in charges associated with Affordable Medicines civil prescription opioid litigation, a $3.0 million charge for the settlement of an Affordable Medicines customer claim, a $3.0 million charge for the settlement of Affordable Medicines commercial antitrust litigation, and a $1.9 million charge for the settlement of a corporate stockholder derivative lawsuit, partially offset by $10.0 million from the settlement of Affordable Medicines patent infringement matters.
Cost of goods sold for the year ended December 31, 2023 included $11.0 million associated with the non-recurring customer order discussed above. Generics gross profit as a percentage of net revenue increased to 37.9% for the year ended December 31, 2023 from 37.4% in the prior year as a result of the factors described above.
Cost of goods sold for the year ended December 31, 2023 included $11.0 million associated with the non-recurring customer order discussed above. Affordable Medicines gross profit as a percentage of net revenue increased to 40.0% for the year ended December 31, 2024 from 37.9% in the prior year as a result of the factors described above.
At various times during the year, our cash balances held in the U.S. may exceed amounts that are insured by the Federal Deposit Insurance Corporation. We make our investments in accordance with our investment policy.
We maintain cash balances at both U.S. based and foreign country based commercial banks. At various times during the year, our cash balances held in the U.S. may exceed amounts that are insured by the Federal Deposit Insurance Corporation. We make our investments in accordance with our investment policy.
Specialty gross profit as a percentage of net revenue decreased to 45.1% for the year ended December 31, 2023 as compared to 51.2% in the prior year as a result of the factors described above.
Specialty gross profit as a percentage of net revenue increased to 54.5% for the year ended December 31, 2024 as compared to 45.1% in the prior year as a result of the factors described above.
Cost of Goods Sold and Gross Profit Generics cost of goods sold for the year ended December 31, 2023 increased 2.0% compared to the prior year primarily due to costs associated with increased sales volume and an increased inventory provision, partially offset by efficiencies in our supply costs.
Cost of Goods Sold and Gross Profit Affordable Medicines cost of goods sold for the year ended December 31, 2024 increased 10.7% compared to the prior year primarily due to costs associated with increased sales volume and increased plant and freight costs and an increased inventory provision, partially offset by efficiencies in our supply costs.
Item 1. Business and Item 1A. Risk Factors in this Form 10-K. Inflation While it is difficult to accurately measure the impact of inflation, we estimate our business experienced an increase in costs due to inflation of approximately $15.0 million for the year ended December 31, 2023.
Item 1. Business and Item 1A. Risk Factors in this Form 10-K. Inflation While it is difficult to accurately measure the impact of inflation, we estimate our business did not experience a material increase in costs due to inflation for the year ended December 31, 2024.
The timing and amount of any payments under the TRA may vary, depending upon a number of factors including the timing and amount of our taxable income, and the corporate tax rate in effect at the time of realization of our taxable income (the TRA liability is determined based on a percentage of the corporate tax savings from the use of the TRA’s attributes).
The timing and amount of any payments under the TRA may vary, depending upon a number of factors including the timing and amount of our taxable income, and the corporate tax rate in effect at the time of realization of our taxable income.
Provision For Income Taxes The provision for income taxes was $8.5 million and $6.7 million for the years ended December 31, 2023 and 2022 , respectively. The effective tax rates for the years ended December 31, 2023 and 2022 were (21.0)% and (2.7%), respectively.
Provision For Income Taxes The provision for income taxes was $18.9 million and $8.5 million for the years ended December 31, 2024 and 2023 , respectively. The effective tax rates for the years ended December 31, 2024 and 2023 were (34.3)% and (21.0)% , respectively.
The $15.2 million decrease in the change in fair value of contingent consideration for the year ended December 31, 2023 as compared to the prior year was primarily related to a reduction in promotional focus on LYVISPAH TM .
Change in Fair Value of Contingent Consideration The year-over-year variance of $13.6 million in change in fair value of contingent consideration for the year ended December 31, 2024 as compared to the prior year was primarily related to a reduction in promotional focus on LYVISPAH TM during the year ended December 31, 2023. Refer to Note 18.
A portion of our cash flows are derived outside the U.S. As a result, we are subject to market risk associated with changes in foreign exchange rates. We maintain cash balances at both U.S. based and foreign country based commercial banks.
Cash Balances At December 31, 2024, our cash and cash equivalents consist of cash on deposit and highly liquid investments. A portion of our cash flows are derived outside the U.S. As a result, we are subject to market risk associated with changes in foreign exchange rates.
Cost of Goods Sold and Gross Profit AvKARE cost of goods sold for the year ended December 31, 2023 increased 27.4% as compared to the prior year, and gross profit as a percentage of net revenue increased to 16.3% for the year ended December 31, 2023 from 14.0% in the prior year primarily due to the increase in sales through our higher margin government channel, including higher margin new product introductions.
Cost of Goods Sold and Gross Profit AvKARE cost of goods sold for the year ended December 31, 2024 increased 25.7% as compared to the prior year, and gross profit as a percentage of net revenue decreased to 15.6% for the year ended December 31, 2024 from 16.3% in the prior year primarily due to the increase in sales through our lower margin distribution channel and an increased inventory provision.
Cost of Goods Sold and Gross Profit Specialty cost of goods sold for the year ended December 31, 2023 increased 17.5% as compared to the prior year primarily due to an increase in volumes and a $25.0 million increase in marketed product intangible asset impairment charges primarily related to a reduction in promotional focus on LYVISPAH™ .
Cost of Goods Sold and Gross Profit Specialty cost of goods sold for the year ended December 31, 2024 decreased 5.3% as compared to the prior year due to a marketed product intangible asset impairment charge of $34.1 million in 2023 related to reduced promotional focus on LYVISPAH ® , partially offset by increased sales in our promoted products.
Net revenue for the year ended December 31, 2023 included a non-recurring customer order of $21.0 million. • Growth in our AvKARE segment of $125.6 million primarily driven by growth in our distribution and government channels resulting from new product introductions. • Growth in our Specialty segment of $16.3 million primarily driven by growth in our endocrinology portfolio of $21.0 million, or 23.8% and a $2.2 million, or 1.2% increase in our neurology portfolio, which was negatively impacted by Medicare rebates associated with the Inflation Reduction Act of approximately $6.4 million.
Net revenue for the year ended December 31, 2023 included a non-recurring customer order of $21.0 million. • Growth in our AvKARE segment of $131.2 million primarily driven by growth in our distribution and government channels resulting from new product introductions. • Growth in our Specialty segment of $55.3 million primarily driven by a $44.7 million increase in our promoted Parkinson’s franchise, of which $16.6 million was comprised of sales of ONGENTYS ® , which launched in January 2024, and initial sales of CREXONT ® , which launched in September 2024.
AvKARE The following table sets forth the results of operations for our AvKARE segment (dollars in thousands): Years Ended December, 31 Increase 2023 2022 $ % Net revenue $ 531,749 $ 406,110 $ 125,639 30.9% Cost of goods sold 444,896 349,133 95,763 27.4% Gross profit 86,853 56,977 29,876 52.4% Selling, general and administrative 55,341 53,659 1,682 3.1% Operating income $ 31,512 $ 3,318 $ 28,194 849.7% Net Revenue AvKARE net revenue for the year ended December 31, 2023 increased 30.9% as compared to the prior year primarily driven by growth in our distribution and government channels resulting from new product introductions.
AvKARE The following table sets forth the results of operations for our AvKARE segment (dollars in thousands): Years Ended December, 31 Change 2024 2023 $ % Net revenue $ 662,945 $ 531,749 $ 131,196 24.7% Cost of goods sold 559,335 444,896 114,439 25.7% Gross profit 103,610 86,853 16,757 19.3% Selling, general and administrative 60,709 55,341 5,368 9.7% Operating income $ 42,901 $ 31,512 $ 11,389 36.1% Net Revenue AvKARE net revenue for the year ended December 31, 2024 increased 24.7% as compared to the prior year primarily driven by growth in our distribution and government channels resulting from new product introductions.
Cost of goods sold for the year ended December 31, 2023 included $11.0 million associated with the non-recurring customer order in our Generics segment discussed above.
Cost of goods sold for the year ended December 31, 2023 included $11.0 million associated with the non-recurring customer order in our Affordable Medicines segment discussed above and a marketed product intangible asset impairment charge of $34.1 million in our Specialty segment related to a reduction in the promotional focus on LYVISPAH ® .
Notwithstanding our estimates, rising inflationary pressures due to higher input costs, including higher material, transportation, labor and other costs, could exceed our expectations and may adversely impact our operating results in future periods. 52 Results of Operations Consolidated Results The following table sets forth our summarized, consolidated results of operations (dollars in thousands): Years Ended December 31, Increase (Decrease) 2023 2022 $ % Net revenue $ 2,393,607 $ 2,212,304 $ 181,303 8.2% Cost of goods sold 1,573,042 1,427,596 145,446 10.2% Gross profit 820,565 784,708 35,857 4.6% Selling, general and administrative 429,675 399,700 29,975 7.5% Research and development 163,950 195,688 (31,738) (16.2)% In-process research and development impairment charges 30,800 12,970 17,830 137.5% Intellectual property legal development expenses 3,828 4,358 (530) (12.2)% Acquisition, transaction-related and integration expenses — 709 (709) (100.0)% Restructuring and other charges 1,749 1,421 328 23.1% Change in fair value of contingent consideration (14,497) 731 (15,228) nm Insurance recoveries for property losses and associated expenses — (1,911) 1,911 (100.0)% Charges related to legal matters, net 1,824 269,930 (268,106) (99.3)% Other operating income (1,138) (3,960) 2,822 (71.3)% Operating income (loss) 204,374 (94,928) 299,302 nm Total other expense, net (244,644) (153,199) (91,445) 59.7% Loss before income taxes (40,270) (248,127) 207,857 (83.8)% Provision for income taxes 8,452 6,662 1,790 26.9% Net loss $ (48,722) $ (254,789) $ 206,067 (80.9)% nm - not meaningful Net Revenue Net revenue for the year ended December 31, 2023 increased 8.2% from the prior year primarily due to: • Growth in our Generics segment of $39.3 million primarily due to new generics products launched in 2023 and 2022, which included biosimilars that contributed $62.6 million and new generic products that contributed $47.4 million, partially offset by price erosion.
Notwithstanding our estimates, rising inflationary pressures due to higher input costs, including higher material, transportation, labor and other costs, could exceed our expectations and may adversely impact our operating results in future periods. 54 Results of Operations Consolidated Results The following table sets forth our summarized, consolidated results of operations (dollars in thousands): Years Ended December 31, Change 2024 2023 $ % Net revenue $ 2,793,957 $ 2,393,607 $ 400,350 16.7% Cost of goods sold 1,773,519 1,573,042 200,477 12.7% Gross profit 1,020,438 820,565 199,873 24.4% Selling, general and administrative 476,436 429,675 46,761 10.9% Research and development 190,714 163,950 26,764 16.3% In-process research and development impairment charges — 30,800 (30,800) (100.0)% Intellectual property legal development expenses 5,845 3,828 2,017 52.7% Restructuring and other charges 2,355 1,749 606 34.6% Change in fair value of contingent consideration (930) (14,497) 13,567 (93.6)% Charges related to legal matters, net 96,692 1,824 94,868 nm Other operating income — (1,138) 1,138 (100.0)% Operating income 249,326 204,374 44,952 22.0% Total other expense, net (304,339) (244,644) (59,695) 24.4% Loss before income taxes (55,013) (40,270) (14,743) 36.6% Provision for income taxes 18,863 8,452 10,411 123.2% Net loss $ (73,876) $ (48,722) $ (25,154) 51.6% nm - not meaningful Net Revenue Net revenue for the year ended December 31, 2024 increased 16.7% from the prior year primarily due to: • Growth in our Affordable Medicines segment of $213.9 million, primarily due to new products launched in 2024 and 2023, which included biosimilars that contributed $59.7 million of year-over-year growth and other new products that contributed $144.1 million of year-over-year growth, and strong volume growth, partially offset by price erosion.
The increase in cost of goods sold was primarily due to increased AvKARE and Generics volume, a $25.0 million increase in marketed product intangible asset impairment charges primarily related to a reduction in promotional focus on LYVISPAH™ in our Specialty segment, and an increase in the inventory provision, partially offset by efficiencies in our supply costs.
The increase in cost of goods sold was primarily due to increased AvKARE and Affordable Medicines volume, increased plant and freight costs, and an increased inventory provision, partially offset by efficiencies in our supply costs.
Specialty The following table sets forth the results of operations for our Specialty segment (dollars in thousands): Years Ended December 31, Increase (Decrease) 2023 2022 $ % Net revenue $ 390,457 $ 374,121 $ 16,336 4.4% Cost of goods sold 214,277 182,432 31,845 17.5% Gross profit 176,180 191,689 (15,509) (8.1)% Selling, general and administrative 88,137 90,031 (1,894) (2.1)% Research and development 31,717 28,179 3,538 12.6% In-process research and development impairment charges 4,300 — 4,300 nm Intellectual property legal development expenses 120 107 13 12.1% Acquisition, transaction-related and integration expenses — 49 (49) (100.0)% Restructuring and other charges 1,105 — 1,105 nm Change in fair value of contingent consideration (14,497) 731 (15,228) nm Operating income $ 65,298 $ 72,592 $ (7,294) (10.0)% nm - not meaningful Net Revenue Specialty net revenue for the year ended December 31, 2023 increased 4.4% as compared to the prior year, driven by the growth in our endocrinology portfolio of $21.0 million, or 23.8%, and a $2.2 million, or 1.2%, increase in our neurology portfolio, which was negatively impacted by Medicare rebates associated with the Inflation Reduction Act of approximately $6.4 million.
Specialty The following table sets forth the results of operations for our Specialty segment (dollars in thousands): Years Ended December 31, Change 2024 2023 $ % Net revenue $ 445,749 $ 390,457 $ 55,292 14.2% Cost of goods sold 202,821 214,277 (11,456) (5.3)% Gross profit 242,928 176,180 66,748 37.9% Selling, general and administrative 109,658 88,137 21,521 24.4% Research and development 18,943 31,717 (12,774) (40.3)% In-process research and development impairment charges — 4,300 (4,300) (100.0)% Intellectual property legal development expenses 160 120 40 33.3% Restructuring and other charges 1,517 1,105 412 37.3% Change in fair value of contingent consideration (930) (14,497) 13,567 (93.6)% Operating income $ 113,580 $ 65,298 $ 48,282 73.9% Net Revenue Specialty net revenue for the year ended December 31, 2024 increased 14.2% as compared to the prior year, primarily driven by a $44.7 million increase in our promoted Parkinson’s franchise, of which $16.6 million was comprised of sales of ONGENTYS ® , which launched in January 2024, and initial sales of CREXONT ® , which launched in September 2024.
In-Process Research and Development Impairment Charges Generics IPR&D impairment charges of $26.5 million for the year ended December 31, 2023 were related to one asset that experienced adverse clinical trials results in the fourth quarter of 2023 and resulted in significantly lower than expected future 55 cash flows.
In-Process Research and Development Impairment Charges Affordable Medicines IPR&D impairment charges for the year ended December 31, 2023 were related to one asset that experienced adverse clinical trials results in the fourth quarter of 2023 and resulted in significantly lower than expected future cash flows. 57 Charges (Credit) Related to Legal Matters, Net For the year ended December 31, 2024, Affordable Medicines charges related to legal matters, net of $96.7 million were primarily associated with a settlement in principle on the primary financial terms for a nationwide resolution to the opioids cases that have been filed and that might have been filed against us by political subdivisions and Native American tribes across the U.S.
The increase was primarily driven by a $52.3 million increase in net interest expense as a result of higher rates on our variable rate debt and a $40.8 million loss on refinancing the Term Loan Due 2025 and amending the New Revolving Credit Facility.
The increase was primarily driven by a $48.0 million increase in net interest expense as a result of higher rates on our variable rate debt and an increase in the average amount outstanding on our revolving credit facility throughout 2024, and a $47.6 million increase in our tax receivable agreement liability (refer to Note 6.
Selling, General, and Administrative AvKARE SG&A expense for the year ended December 31, 2023 increased 3.1% as compared to the prior year primarily due to higher employee compensation. Liquidity and Capital Resources Our primary source of liquidity is cash generated from operations, available cash and borrowings under debt financing arrangements (as defined and described in Note 16.
Liquidity and Capital Resources Our primary source of liquidity is cash generated from operations, available cash and borrowings under debt financing arrangements (as defined and described in Note 15.
Fair Value Measurements for information about the estimation of our contingent consideration liabilities. The $15.2 million decrease in the change in fair value of contingent consideration for the year ended December 31, 2023 as compared to the prior year was primarily related to a reduction in promotional focus on LYVISPAH TM .
Research and Development Specialty R&D expense for the year ended December 31, 2024 decreased 40.3% as compared to the prior year primarily due to reduced project spend of $8.6 million and reduced infrastructure costs. 58 Change in Fair Value of Contingent Consideration The year-over-year variance of $13.6 million in change in fair value of contingent consideration for the year ended December 31, 2024 as compared to the prior year was primarily related to a reduction in promotional focus on LYVISPAH TM during the year ended December 31, 2023.
Gross profit as a percentage of net revenue decreased to 34.3% for the year ended December 31, 2023 from 35.5% in the prior year, primarily as a result of the factors noted above. 53 Selling, General and Administrative Selling, general and administrative (“SG&A”) expenses for the year ended December 31, 2023 increased 7.5% as compared to the prior year primarily due to increases in employee compensation, higher costs associated with our biosimilar launches, higher freight charges driven by increased sales volume, and higher professional fees associated with the Reorganization, partially offset by a decrease of $5.0 million associated with a biosimilar regulatory approval in the prior year.
Gross profit as a percentage of net revenue increased to 36.5% for the year ended December 31, 2024 from 34.3% in the prior year, primarily as a result of the factors noted above. 55 Selling, General and Administrative Selling, general and administrative (“SG&A”) expenses for the year ended December 31, 2024 increased 10.9% as compared to the prior year primarily due to increases in employee compensation, promotion associated with ONGENTYS ® and CREXONT ® , increased expenses associated with our growing biosimilars, and annual fees assessed on branded prescription drug manufacturers, which are also applicable to certain of our Affordable Medicines products.
As part of the Reorganization, the TRA was amended to reduce our future obligation to pay 85% of the realized tax benefits subject to the TRA to 75% of such realized benefits. As of December 31, 2023, the contingent TRA liability, including the impact of the amendment, was $185.2 million.
Refer to Note 20. Commitments and Contingencies for additional information. Refer to Note 20. Commitments and Contingencies for additional information. Tax Receivable Agreement As part of the Reorganization, our existing tax receivable agreement (“TRA”) was amended to reduce our future obligation to pay 85% of the realized tax benefits subject to the TRA to 75% of such realized benefits.
We estimate that we will invest approximately $60.0 million to $70.0 million during 2024 for capital expenditures to support and grow our existing operations, primarily related to investments in manufacturing equipment, IT and facilities. 57 Debt Instruments Over the next 12 months, we expect to make substantial payments for monthly interest and quarterly principal amounts due for our Term Loan Due 2028, monthly interest under our Term Loan Due 2025, and contractual payments for leased premises.
We expect such reimbursements to primarily be included in our financing cash flows. Debt Instruments Over the next 12 months, we expect to make substantial payments for monthly interest and quarterly principal amounts due for our Term Loan Due 2028, monthly interest on our Amended New Credit Facility, and contractual payments for leased premises.
Research and Development Generics R&D expense for the year ended December 31, 2023 decreased 21.1% compared to the prior year primarily due to lower project spend of $25.0 million and operating efficiencies in our infrastructure, including reduced employee compensation costs, partially offset by an increase in in-licensing and upfront milestone payments of $2.0 million.
Research and Development Affordable Medicines R&D expense for the year ended December 31, 2024 increased 29.9% as compared to the prior year primarily due to an increase in in-licensing and upfront milestone payments of $30.0 million, including $20.0 million associated with our exclusive license of Omalizumab (refer to Note 23.
Research and Development R&D expenses for the year ended December 31, 2023 decreased 16.2% from the prior year primarily due to lower project spend of $17.3 million, a decrease in in-licensing and upfront milestone payments of $2.5 million and operating efficiencies in our infrastructure.
Research and Development Research and development (“R&D”) expenses for the year ended December 31, 2024 increased 16.3% from the prior year primarily due to an increase in in-licensing and upfront milestone payments of $30.0 million, including $20.0 million associated with our exclusive license of Omalizumab (refer to Note 23.
Excluding these rebates, net revenue from our neurology portfolio increased 4.7%. Cost of Goods Sold and Gross Profit Cost of goods sold increased 10.2% for the year ended December 31, 2023 as compared to the prior year.
Additionally, growth in our promoted endocrinology portfolio of $20.8 million was partially offset by declines in our non-promoted products. Cost of Goods Sold and Gross Profit Cost of goods sold increased 12.7% for the year ended December 31, 2024 as compared to the prior year.
Total Other Expense, Net Total other expense, net increased 59.7% for the year ended December 31, 2023.
For additional information, refer to Note 20. Commitments and Contingencies. Total Other Expense, Net Total other expense, net increased 24.4% for the year ended December 31, 2024.
Selling, General, and Administrative Generics SG&A for the year ended December 31, 2023 increased by 9.2% compared to the prior year primarily due to an increase in employee compensation, higher costs associated with our biosimilar launches, and higher freight charges driven by increased sales volume, partially offset by a decrease of $5.0 million associated with a biosimilar regulatory approval in the prior year.
Selling, General, and Administrative Affordable Medicines SG&A for the year ended December 31, 2024 increased by 8.1% compared to the prior year primarily due to increases in employee compensation driven by infrastructure expansion and promotion associated with our biosimilar launches and the annual fees assessed on branded prescription drug manufacturers, which are also applicable to certain of our affordable medicine products, partially offset by reduced legal fees.
We expect an inflationary impact of approximately $15.0 million to $20.0 million for the year ending December 31, 2024.
We do not expect a material impact related to inflation for the year ending December 31, 2025.
Change in Fair Value of Contingent Consideration Refer to Note 19. Fair Value Measurements for information about the estimation of our contingent consideration liabilities.
Refer to Note 18. Fair Value Measurements for additional information.
Subsequent to the Reorganization, we are no longer obligated to make tax distributions to the Members. There was no liability for tax distributions payable to the Members as of December 31, 2023 and 2022. Cash Balances At December 31, 2023, our cash and cash equivalents consist of cash on deposit and highly liquid investments.
There was no liability for tax distributions payable to the AvKARE Sellers as of December 31, 2024 or 2023.
Selling, General, and Administrative Specialty SG&A expense for the year ended December 31, 2023 decreased 2.1% as compared to the prior year primarily due to a decrease in third-party marketing spend for our promoted products. 56 Research and Development Specialty R&D expense for the year ended December 31, 2023 increased 12.6% as compared to the prior year primarily due to an increase in project related spend of $7.7 million and increased employee compensation, partially offset by a decrease in in-licensing and upfront milestone payments of $4.5 million.
Selling, General, and Administrative AvKARE SG&A expense for the year ended December 31, 2024 increased 9.7% as compared to the prior year primarily due to higher sales-related expenses, increases in employee compensation and higher professional fees.