Biggest changeInterest income primarily includes interest earned on cash and cash equivalents, realized and unrealized gains and losses on our short-term investments during the period, and the deferred payment obligation associated with the sale of our former Casting segment, as well as the impact of the interest rate differential on our fixed-to-fixed cross-currency swap. 28 OTHER INCOME (EXPENSE) Following are the components of Other Income (Expense) for 2022 and 2021: Debt refinancing and redemption costs In March 2022, we entered into the Amended and Restated Credit Agreement (Amended and Restated Credit Agreement), which, among other things, increased the principal amount of the Term Loan A Facility (Term Loan A Facility) to $520.0 million, extended the maturity date of the Term Loan A Facility and the Revolving Credit Facility (Revolving Credit Facility) and established the use of updated reference rates.
Biggest changeINTEREST INCOME Interest income was $26.2 million in 2023 and $17.0 million in 2022. Interest income primarily includes interest earned on cash and cash equivalents, the deferred payment obligation associated with the sale of our former Casting segment, as well as the impact of the interest rate differential on our fixed-to-fixed cross-currency swap.
Senior Secured Credit Facilities Our Senior Secured Credit Facilities, which are comprised of our Revolving Credit Facility, our Term Loan A Facility, and our Term Loan B Facility, provide back-up liquidity for our foreign credit facilities.
Our Senior Secured Credit Facilities, which are comprised of our Revolving Credit Facility, our Term Loan A Facility, and our Term Loan B Facility, provide back-up liquidity for our foreign credit facilities.
The proceeds from the Refinancing Facility Agreement, together with $50.0 million cash on hand and the proceeds of a $25.0 million borrowing under the Revolving Credit Facility, were used to (a) prepay the entire principal amount of the then outstanding Term Loan B Facility, (b) pay all accrued and unpaid interest due under the Term Loan B Facility and (c) pay fees, costs and expenses payable in connection with the refinancing of the Term Loan B Facility.
The proceeds from the Refinancing Facility Agreement, together with $50.0 million cash on hand and the proceeds of a $25.0 million borrowing under the Revolving Credit Facility, were used to (a) prepay the entire principal amount of the then outstanding term loan B facility, (b) pay all accrued and unpaid interest due under the then outstanding term loan B facility and (c) pay fees, costs and expenses payable in connection with the refinancing of the Term Loan B Facility.
With population growth, increased government regulations to ease congestion and generational shifts in preferences, it is expected that the markets for ride-sharing services will continue to grow, which could cause a change in the type of vehicles utilized.
With population growth, increased government regulations to ease congestion and generational shifts in preferences, it is expected that the markets for autonomous vehicles and ride-sharing services will continue to grow, which could cause a change in the type of vehicles utilized.
If the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to the excess carrying value over fair value. 41 In performing goodwill impairment testing, we utilize a third-party valuation specialist to assist management in determining the fair value of our reporting units.
If the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to the excess carrying value over fair value. In performing goodwill impairment testing, we utilize a third-party valuation specialist to assist management in determining the fair value of our reporting units.
Such information is reconciled to its closest GAAP measure in accordance with Securities and Exchange Commission rules below. 32 We define EBITDA to be earnings before interest expense, income taxes, depreciation and amortization.
Such information is reconciled to its closest GAAP measure in accordance with Securities and Exchange Commission rules below. We define EBITDA to be earnings before interest expense, income taxes, depreciation and amortization.
The credit ratings and outlook currently assigned to our securities by the rating agencies are as follows: Corporate Family Rating Senior Unsecured Notes Rating Senior Secured Notes Rating Outlook Standard & Poor's BB- B+ BB+ Stable Moody's Investors Services B1 B2 Ba1 Stable Dividend program We have not declared or paid any cash dividends on our common stock in 2022 or 2021.
The credit ratings and outlook currently assigned to our securities by the rating agencies are as follows: Corporate Family Rating Senior Unsecured Notes Rating Senior Secured Notes Rating Outlook Standard & Poor's BB- B+ BB+ Stable Moody's Investors Services B1 B2 Ba1 Stable Dividend program We have not declared or paid any cash dividends on our common stock in 2023 or 2022.
We are also a supplier to Ford Motor Company (Ford) for driveline system products on certain vehicle programs including the Bronco Sport, Maverick, Edge, Escape and Lincoln Nautilus, and we also sell various products to Ford from our Metal Forming segment. Sales to Ford were approximately 12% of our consolidated net sales in 2022, 2021 and 2020.
We are also a supplier to Ford Motor Company (Ford) for driveline system products on certain vehicle programs including the Bronco Sport, Maverick, Edge, Escape and Lincoln Nautilus, and we also sell various products to Ford from our Metal Forming segment. Sales to Ford were approximately 12% of our consolidated net sales in 2023, 2022 and 2021.
As a result, we expensed $0.2 million of debt refinancing costs, paid accrued interest of $1.0 million, and paid debt issuance costs of $4.5 million in 2022 related to the Amended and Restated Credit Agreement. 35 In December 2022, Holdings and AAM, Inc. entered into the Refinancing Facility Agreement, under the Amended and Restated Credit Agreement and established a new Term Loan B Facility of $675.0 million.
As a result, we expensed $0.2 million of debt refinancing costs, paid accrued interest of $1.0 million, and paid debt issuance costs of $4.5 million in 2022 related to the Amended and Restated Credit Agreement. 36 In December 2022, Holdings and AAM, Inc. entered into the Refinancing Facility Agreement, under the Amended and Restated Credit Agreement and established a new Term Loan B Facility of $675.0 million.
We continue to monitor the progress and conclusions of all ongoing audits and other communications with tax authorities and adjust our estimated liability as necessary. Other Income Tax Matters We operate in multiple jurisdictions throughout the world and the income tax returns of several subsidiaries in various tax jurisdictions are currently under examination.
We continue to monitor the progress and conclusions of all ongoing audits and other communications with tax authorities and adjust our estimated liability as necessary. Other Income Tax Matters - Pending Tax Litigation We operate in multiple jurisdictions throughout the world and the income tax returns of several subsidiaries in various tax jurisdictions are currently under examination.
As vehicle electrification and electronic components become an increasingly larger focus for OEMs and suppliers, the industry has seen, and will likely continue to see, competition to develop and market new and alternative technologies, including from new market entrants such as non-traditional automotive companies and technology companies.
As vehicle electrification and electronic components become an increasingly larger focus for OEMs and suppliers, the industry has seen, and will likely continue to see, competition to develop and market new and alternative technologies and fuel types, including from new market entrants such as non-traditional automotive companies and technology companies.
Through our e-drive systems, e-beam axle technology, lightweight axles, high-efficiency axles, all-wheel drive systems, high-strength connecting rod technology, refined vibration control systems and forged axle tubes, we have significantly advanced our efforts to improve ride and handling performance, while reducing emissions and mass.
Through our e-drive systems, e-Beam axle technology, lightweight axles, high-efficiency axles, all-wheel drive systems, high-strength connecting rod technology and refined vibration control systems, we have significantly advanced our efforts to improve ride and handling performance, while reducing emissions and mass.
Under the goodwill guidance, we determined that each of our segments represents a reporting unit. The determination of our reporting units and impairment indicators also require us to make significant judgments. At December 31, 2022 all goodwill was associated with our Driveline reporting unit.
Under the goodwill guidance, we determined that each of our segments represents a reporting unit. The determination of our reporting units and impairment indicators also require us to make significant judgments. At December 31, 2023 all goodwill was associated with our Driveline reporting unit.
While we believe that we have selected reasonable assumptions for the valuation of our pension and OPEB obligations at year-end 2022, actual trends could result in materially different valuations. The effect on our pension plans of a 0.5% decrease in both the discount rate and expected return on assets is shown below as of December 31, 2022, our valuation date.
While we believe that we have selected reasonable assumptions for the valuation of our pension and OPEB obligations at year-end 2023, actual trends could result in materially different valuations. 41 The effect on our pension plans of a 0.5% decrease in both the discount rate and expected return on assets is shown below as of December 31, 2023, our valuation date.
(Stellantis), Ford Motor Company (Ford) or other customers; • our ability to respond to changes in technology, increased competition or pricing pressures; • our ability to develop and produce new products that reflect market demand; • lower-than-anticipated market acceptance of new or existing products; • our ability to attract new customers and programs for new products; • reduced demand for our customers' products (particularly light trucks and sport utility vehicles (SUVs) produced by GM, Stellantis and Ford); • risks inherent in our global operations (including tariffs and the potential consequences thereof to us, our suppliers, and our customers and their suppliers, adverse changes in trade agreements, such as the United States-Mexico-Canada Agreement (USMCA), immigration policies, political stability or geopolitical conflicts, taxes and other law changes, potential disruptions of production and supply, and currency rate fluctuations); • supply shortages, such as the semiconductor shortage that the automotive industry is currently experiencing and the availability of natural gas or other fuel and utility sources in certain regions, labor shortages, including increased labor costs, or price increases in raw material and/or freight, utilities or other operating supplies for us or our customers as a result of pandemic or epidemic illness such as COVID-19, geopolitical conflicts, natural disasters or otherwise; • a significant disruption in operations at one or more of our key manufacturing facilities; • negative or unexpected tax consequences; • risks related to a failure of our information technology systems and networks, and risks associated with current and emerging technology threats and damage from computer viruses, unauthorized access, cyber attacks and other similar disruptions; • our suppliers', our customers' and their suppliers' ability to maintain satisfactory labor relations and avoid work stoppages; • cost or availability of financing for working capital, capital expenditures, research and development (R&D) or other general corporate purposes including acquisitions, as well as our ability to comply with financial covenants; • our customers' and suppliers' availability of financing for working capital, capital expenditures, R&D or other general corporate purposes; • an impairment of our goodwill, other intangible assets, or long-lived assets if our business or market conditions indicate that the carrying values of those assets exceed their fair values; • liabilities arising from warranty claims, product recall or field actions, product liability and legal proceedings to which we are or may become a party, or the impact of product recall or field actions on our customers; • our ability or our customers' and suppliers' ability to successfully launch new product programs on a timely basis; • risks of environmental issues, including impacts of climate-related events, that could result in unforeseen issues or costs at our facilities, or risks of noncompliance with environmental laws and regulations, including reputational damage; • our ability to maintain satisfactory labor relations and avoid work stoppages; • our ability to consummate and successfully integrate acquisitions and joint ventures; • our ability to achieve the level of cost reductions required to sustain global cost competitiveness or our ability to recover certain cost increases from our customers; • our ability to realize the expected revenues from our new and incremental business backlog; • price volatility in, or reduced availability of, fuel; • our ability to protect our intellectual property and successfully defend against assertions made against us; • adverse changes in laws, government regulations or market conditions affecting our products or our customers' products; • our ability or our customers' and suppliers' ability to comply with regulatory requirements and the potential costs of such compliance; • changes in liabilities arising from pension and other postretirement benefit obligations; • our ability to attract and retain qualified personnel in key positions and functions; and • other unanticipated events and conditions that may hinder our ability to compete.
(Stellantis), Ford Motor Company (Ford) or other customers; • our ability to respond to changes in technology, increased competition or pricing pressures; • our ability to develop and produce new products that reflect market demand; • lower-than-anticipated market acceptance of new or existing products; • our ability to attract new customers and programs for new products; • reduced demand for our customers' products (particularly light trucks and sport utility vehicles (SUVs) produced by GM, Stellantis and Ford); • risks inherent in our global operations (including tariffs and the potential consequences thereof to us, our suppliers, and our customers and their suppliers, adverse changes in trade agreements, such as the United States-Mexico-Canada Agreement (USMCA), compliance with customs and trade regulations, immigration policies, political stability or geopolitical conflicts, taxes and other law changes, potential disruptions of production and supply, and currency rate fluctuations); • supply shortages and the availability of natural gas or other fuel and utility sources in certain regions, labor shortages, including increased labor costs, or price increases in raw material and/or freight, utilities or other operating supplies for us or our customers as a result of pandemic or epidemic illness such as COVID-19, geopolitical conflicts, natural disasters or otherwise; • a significant disruption in operations at one or more of our key manufacturing facilities; • risks inherent in transitioning our business from internal combustion engine vehicle products to electric vehicle products; • negative or unexpected tax consequences, including those resulting from tax litigation; • risks related to a failure of our information technology systems and networks, including cloud-based applications, and risks associated with current and emerging technology threats and damage from computer viruses, unauthorized access, cyber attacks and other similar disruptions; • our suppliers', our customers' and their suppliers' ability to maintain satisfactory labor relations and avoid or minimize work stoppages; • cost or availability of financing for working capital, capital expenditures, research and development (R&D) or other general corporate purposes including acquisitions, as well as our ability to comply with financial covenants; • our customers' and suppliers' availability of financing for working capital, capital expenditures, R&D or other general corporate purposes; • an impairment of our goodwill, other intangible assets, or long-lived assets if our business or market conditions indicate that the carrying values of those assets exceed their fair values; • liabilities arising from warranty claims, product recall or field actions, product liability and legal proceedings to which we are or may become a party, or the impact of product recall or field actions on our customers; • our ability or our customers' and suppliers' ability to successfully launch new product programs on a timely basis; • risks of environmental issues, including impacts of climate-related events, that could result in unforeseen issues or costs at our facilities, or risks of noncompliance with environmental laws and regulations, including reputational damage; • our ability to maintain satisfactory labor relations and avoid work stoppages; • our ability to consummate and successfully integrate acquisitions and joint ventures; • our ability to achieve the level of cost reductions required to sustain global cost competitiveness or our ability to recover certain cost increases from our customers; • our ability to realize the expected revenues from our new and incremental business backlog; • price volatility in, or reduced availability of, fuel; • our ability to protect our intellectual property and successfully defend against assertions made against us; • adverse changes in laws, government regulations or market conditions affecting our products or our customers' products; • our ability or our customers' and suppliers' ability to comply with regulatory requirements and the potential costs of such compliance; • changes in liabilities arising from pension and other postretirement benefit obligations; • our ability to attract and retain qualified personnel in key positions and functions; and • other unanticipated events and conditions that may hinder our ability to compete.
Net income and EPS were primarily impacted by the factors discussed above. 30 SEGMENT REPORTING Our business is organized into Driveline and Metal Forming segments, with each representing a reportable segment under Accounting Standards Codification (ASC) 280 - Segment Reporting .
Net income (loss) and EPS were primarily impacted by the factors discussed above. 31 SEGMENT REPORTING Our business is organized into Driveline and Metal Forming segments, with each representing a reportable segment under Accounting Standards Codification (ASC) 280 - Segment Reporting .
Some OEMs and suppliers may be preparing for these challenges through merger and acquisition (M&A) activity, development of strategic partnerships and reduction of vehicle platform complexity.
Some OEMs and suppliers may be preparing for these challenges through merger and acquisition activity, development of strategic partnerships and reduction of vehicle platform complexity.
As a result, we expensed $0.2 million of debt refinancing costs related to the Amended and Restated Credit Agreement in 2022. See Note 4 - Long-Term Debt for further detail on the Amended and Restated Credit Agreement.
In March 2022, we entered into the Amended and Restated Credit Agreement (Amended and Restated Credit Agreement). As a result, we expensed $0.2 million of debt refinancing costs related to the Amended and Restated Credit Agreement in 2022. See Note 4 - Long-Term Debt for further detail on the Amended and Restated Credit Agreement.
While evolving expectations and reporting standards are driving increased ESG reporting, this trend aligns with our cultural values and commitment to profitably grow our business in a way that is sustainable and socially responsible.
While evolving expectations, expanding regulatory requirements and reporting standards are driving increased ESG reporting, this trend aligns with our cultural values and commitment to profitably grow our business in a way that is sustainable and socially responsible.
Accordingly, our quarterly results may reflect these trends. LEGAL PROCEEDINGS See Note 11 - Commitments and Contingencies in Item 8, "Financial Statements and Supplementary Data" for discussion of legal proceedings and the effect on AAM.
Accordingly, our quarterly results may reflect these trends. LEGAL PROCEEDINGS See Note 9 - Income Taxes and Note 11 - Commitments and Contingencies in Item 8, "Financial Statements and Supplementary Data" for discussion of legal proceedings and the effect on AAM.
In 2022, the weighted-average discount rates determined on that basis were 5.50% for the valuation of both our pension benefit obligations and the valuation of our OPEB obligations. The discount rates used in the valuations of our non-U.S. pension obligations were based on hypothetical yield curves developed from corporate bond yield information within each regional market.
In 2023, the weighted-average discount rates determined on that basis were 5.15% for the valuation of both our pension benefit obligations and the valuation of our OPEB obligations. The discount rates used in the valuations of our non-U.S. pension obligations were based on hypothetical yield curves developed from corporate bond yield information within each regional market.
Total Segment Adjusted EBITDA is defined as EBITDA for our reportable segments excluding the impact of restructuring and acquisition-related costs, debt refinancing and redemption costs, loss on the sale of a business, impairment charges, pension settlements, unrealized gains or losses on equity securities, and non-recurring items.
Total Segment Adjusted EBITDA is defined as EBITDA for our reportable segments excluding the impact of restructuring and acquisition-related costs, debt refinancing and redemption costs, loss on the sale of a business, unrealized gains or losses on equity securities, pension curtailment and settlement charges and non-recurring items.
On June 1, 2022, our acquisition of Tekfor became effective and we began consolidating the results of Tekfor on that date, which are reported in our Metal Forming segment for the year ended December 31, 2022.
On June 1, 2022, our acquisition of Tekfor became effective and we began consolidating the results of Tekfor on that date, which are reported in our Metal Forming segment for the years ended December 31, 2023 and December 31, 2022.
Expected Discount Return on Rate Assets (in millions) Decline in funded status $ (26.3) N/A Increase in 2022 expense $ 0.1 $ 2.7 No changes in benefit levels or in the amortization of gains or losses have been assumed. For 2023, we assumed a weighted-average annual increase in the per-capita cost of covered health care benefits of 6.4% for OPEB.
Expected Discount Return on Rate Assets (in millions) Decline in funded status $ (23.1) N/A Increase in 2023 expense $ 0.3 $ 2.4 No changes in benefit levels or in the amortization of gains or losses have been assumed. For 2024, we assumed a weighted-average annual increase in the per-capita cost of covered health care benefits of 7.0% for OPEB.
We also supply GM with various products from our Metal Forming segment. Sales to GM were approximately 40% of our consolidated net sales in 2022, 37% in 2021, and 39% in 2020. We also supply driveline system products to Stellantis N.V. (Stellantis) for programs including the heavy-duty Ram full-size pickup trucks and its derivatives and the AWD Chrysler Pacifica.
We also supply GM with various products from our Metal Forming segment. Sales to GM were approximately 39% of our consolidated net sales in 2023, 40% in 2022, and 37% in 2021. We also supply driveline system products to Stellantis N.V. (Stellantis) for programs including the heavy-duty Ram full-size pickup trucks and its derivatives.
We expect our capital spending in 2023 to be 3.5% to 4% of sales, which includes support for our global program launches in 2023 and 2024 within our new and incremental business backlog, as well as program capacity increases and future launches of replacement programs.
We expect our capital spending in 2024 to be 4.0% to 4.5% of sales, which includes support for our global program launches in 2024 and 2025 within our new and incremental business backlog, as well as program capacity increases and future launches of replacement programs.
Management's Discussion and Analysis of Financial Condition and Results of Operations" in our 2021 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC) on February 11, 2022, which discussion is incorporated herein by reference.
Management's Discussion and Analysis of Financial Condition and Results of Operations" in our 2022 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC) on February 17, 2023, which discussion is incorporated herein by reference.
If, based upon available evidence, it is more likely than not the deferred tax assets will not be realized, a valuation allowance is recorded. As of December 31, 2022, we have a valuation allowance of approximately $217.5 million related to net deferred tax assets in several foreign jurisdictions and U.S. federal, state and local jurisdictions.
If, based upon available evidence, it is more likely than not the deferred tax assets will not be realized, a valuation allowance is recorded. As of December 31, 2023, we have a valuation allowance of approximately $267.1 million related to net deferred tax assets in several foreign jurisdictions and U.S. federal, state and local jurisdictions.
Each guarantee by a Subsidiary Guarantor provides by its terms that it will be automatically, fully and unconditionally released and discharged upon: • any sale, exchange or transfer (by merger or otherwise) of the capital stock of such Subsidiary Guarantor, or the sale or disposition of all the assets of such Subsidiary Guarantor, which sale, exchange, transfer or disposition is made in compliance with the applicable provisions of the indentures; • the exercise by the issuer of its legal defeasance option or covenant defeasance option or the discharge of the issuer’s obligations under the indentures in accordance with the terms of the indentures; or • the election of the issuer to affect such a release following the date that such guaranteed Notes have an investment grade rating from both Standard & Poor's Ratings Group, Inc, and Moody's Investors Service, Inc. 37 The following represents summarized financial information of Holdings, AAM Inc. and the Subsidiary Guarantors (collectively, the Combined Entities).
Each guarantee by a Subsidiary Guarantor provides by its terms that it will be automatically, fully and unconditionally released and discharged upon: • any sale, exchange or transfer (by merger or otherwise) of the capital stock of such Subsidiary Guarantor, or the sale or disposition of all the assets of such Subsidiary Guarantor, which sale, exchange, transfer or disposition is made in compliance with the applicable provisions of the indentures; • the exercise by the issuer of its legal defeasance option or covenant defeasance option or the discharge of the issuer’s obligations under the indentures in accordance with the terms of the indentures; or • the election of the issuer to affect such a release following the date that such guaranteed Notes have an investment grade rating from both Standard & Poor's Ratings Group, Inc, and Moody's Investors Service, Inc.
We believe that operating cash flow, available cash and cash equivalent balances and available committed borrowing capacity under our Senior Secured Credit Facilities and foreign credit facilities will be sufficient to meet these needs. OPERATING ACTIVITIES Net cash provided by operating activities was $448.9 million in 2022 as compared to $538.4 million in 2021.
We believe that operating cash flow, available cash and cash equivalent balances and available committed borrowing capacity under our Senior Secured Credit Facilities and foreign credit facilities will be sufficient to meet these needs. OPERATING ACTIVITIES Net cash provided by operating activities was $396.1 million in 2023 as compared to $448.9 million in 2022.
AAM and GM share in the cost of OPEB for eligible retirees proportionally based on the length of service an employee had with AAM and GM. We estimate the future cost sharing payments and present it as an asset on our Consolidated Balance Sheet. As of December 31, 2022, we estimated $138.2 million in future GM cost sharing.
AAM and GM share in the cost of OPEB for eligible retirees proportionally based on the length of service an employee had with AAM and GM. We estimate the future cost sharing payments and present it as an asset on our Consolidated Balance Sheet. As of December 31, 2023, we estimated $120.0 million in future GM cost sharing.
Also, as part of our continued focus on reducing GHG emissions, during 2022 we committed to reaching net-zero carbon emissions by 2040, and achieved the validation of our net-zero emissions targets by the climate-action organization Science Based Targets Initiative (SBTi).
Also, as part of our continued focus on reducing GHG emissions, we have committed to reaching net-zero carbon emissions by 2040, and have received the validation of our net-zero emissions targets by the climate-action organization Science Based Targets Initiative (SBTi).
The information has been prepared on a combined basis and excludes any investments of AAM Holdings, AAM Inc., or the Subsidiary Guarantors in non-guarantor subsidiaries. Intercompany transactions and amounts between Combined Entities have been eliminated.
The following represents summarized financial information of Holdings, AAM Inc. and the Subsidiary Guarantors (collectively, the Combined Entities). The information has been prepared on a combined basis and excludes any investments of AAM Holdings, AAM Inc., or the Subsidiary Guarantors in non-guarantor subsidiaries. Intercompany transactions and amounts between Combined Entities have been eliminated.
In addition, we sell various products to Stellantis from our Metal Forming segment. Sales to Stellantis were approximately 18% of our consolidated net sales in 2022, and 19% in both 2021 and 2020.
In addition, we sell various products to Stellantis from our Metal Forming segment. Sales to Stellantis were approximately 16% of our consolidated net sales in 2023, 18% in 2022 and 19% in 2021.
Treasury stock Treasury stock increased by $1.9 million in 2022 to $218.2 million as compared to $216.3 million at year-end 2021, due to the withholding and repurchase of shares of AAM stock to satisfy employee tax withholding obligations due upon the vesting of stock-based compensation. 36 Credit ratings To access public debt capital markets, the Company relies on credit rating agencies to assign short-term and long-term credit ratings to our securities as an indicator of credit quality for fixed income investors.
Treasury stock Treasury stock increased by $14.7 million in 2023 to $232.9 million, as compared to $218.2 million at year-end 2022, due to the withholding and repurchase of shares of AAM stock to satisfy employee tax withholding obligations due upon the vesting of stock-based compensation. 37 Credit ratings To access public debt capital markets, the Company relies on credit rating agencies to assign short-term and long-term credit ratings to our securities as an indicator of credit quality for fixed income investors.
As of December 31, 2022, in the event AAM is not successful in defending its position, the potential additional income tax expense, including estimated interest charges, related to tax years 2015 through 2022, is estimated to be in the range of approximately $285 million to $335 million.
As of December 31, 2023, in the event AAM is not successful in defending its position, the potential additional income tax expense, including estimated interest charges, related to tax years 2015 through 2023, is estimated to be in the range of approximately $300 million to $350 million.
A 1.0% increase in the assumed health care trend rate would have increased total service and interest cost in 2022 and the postretirement obligation, net of GM cost sharing, at December 31, 2022 by $0.8 million and $14.6 million, respectively.
A 1.0% increase in the assumed health care trend rate would have increased total service and interest cost in 2023 and the postretirement obligation, net of GM cost sharing, at December 31, 2023 by $0.8 million and $12.2 million, respectively.
We record interest and penalties on uncertain tax positions in income tax expense (benefit). As of December 31, 2022 and 2021, we had a liability for unrecognized income tax benefits and related interest and penalties of $40.5 million and $23.4 million, respectively.
We record interest and penalties on uncertain tax positions in income tax expense (benefit). As of December 31, 2023 and 2022, we had a liability for unrecognized income tax benefits and related interest and penalties of $38.1 million and $40.5 million, respectively.
As a result, we expensed $0.4 million of debt refinancing costs related to the Refinancing Facility Agreement. See Note 4 - Long-Term Debt for further detail on the Refinancing Facility Agreement. In 2022, prior to entering into the Refinancing Facility Agreement, we made voluntary prepayments totaling $100.0 million on our then outstanding term loan B facility.
See Note 4 - Long-Term Debt for further detail on the Refinancing Facility Agreement. In 2022, prior to entering into the Refinancing Facility Agreement, we made voluntary prepayments totaling $100.0 million on our then outstanding term loan B facility.
Gross profit and gross margin were impacted by the factors discussed in Net sales and Cost of goods sold above. 27 SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (SG&A) Year Ended December 31, (in millions) 2022 2021 Change Percent Change Selling, general and administrative expenses $ 345.1 $ 344.2 $ 0.9 0.3 % SG&A as a percentage of net sales was 5.9% in 2022 as compared to 6.7% in 2021.
Gross profit and gross margin were impacted by the factors discussed in Net sales and Cost of goods sold above. 28 SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (SG&A) Year Ended December 31, (in millions) 2023 2022 Change Percent Change Selling, general and administrative expenses $ 366.9 $ 345.1 $ 21.8 6.3 % SG&A as a percentage of net sales was 6.0% in 2023 as compared to 5.9% in 2022.
The SBTi is a partnership between CDP (formerly known as the Climate Disclosure Project), the United Nations Global Compact, World Resources Institute (WRI) and the World Wide Fund for Nature (WWF) that drives ambitious climate action in the private sector by enabling companies to set greenhouse gas emissions reduction targets that are in line with what the latest climate science deems necessary to meet the goals of the Paris Agreement. 24 AAM’s commitment to DEI begins with our Board of Directors (Board).
The SBTi is a partnership between CDP (formerly known as the Climate Disclosure Project), the United Nations Global Compact, World Resources Institute (WRI) and the World Wide Fund for Nature (WWF) that drives ambitious climate action in the private sector by enabling companies to set greenhouse gas emissions reduction targets that are in line with what the latest climate science deems necessary to meet the goals of international agreements on climate change, such as the Paris Agreement.
The rate is assumed to decrease gradually to 5.0% by 2030 and remain at that level thereafter. A 0.5% decrease in the discount rate for our OPEB would have increased total expense in 2022 and the postretirement obligation, net of GM cost sharing, at December 31, 2022 by $0.2 million and $9.3 million, respectively.
The rate is assumed to decrease gradually to 5.0% by 2034 and remain at that level thereafter. A 0.5% decrease in the discount rate for our OPEB would have increased total expense in 2023 and the postretirement obligation, net of GM cost sharing, at December 31, 2023 by $0.4 million and $8.4 million, respectively.
AMORTIZATION OF INTANGIBLE ASSETS Amortization expense for the year ended December 31, 2022 was $85.7 million as compared to $85.8 million for the year ended December 31, 2021. RESTRUCTURING AND ACQUISITION-RELATED COSTS Restructuring and acquisition-related costs were $30.2 million in 2022 and $49.4 million in 2021.
AMORTIZATION OF INTANGIBLE ASSETS Amortization expense for the year ended December 31, 2023 was $85.6 million as compared to $85.7 million for the year ended December 31, 2022. RESTRUCTURING AND ACQUISITION-RELATED COSTS Restructuring and acquisition-related costs were $25.2 million in 2023 and $30.2 million in 2022.
Further, due to the uncertainty associated with the extent and ultimate impact of the significant supply chain constraints affecting the automotive industry, including COVID-19, the semiconductor shortage and resulting impact on global automotive production volumes, and the conflict between Russia and Ukraine, we may experience lower than projected earnings in certain jurisdictions in future periods, and as a result, it is reasonably possible that changes in valuation allowances could be recognized in future periods and such changes could be material to our financial statements. 39 Unrecognized Income Tax Benefits We record uncertain tax positions on the basis of a two-step process whereby: (1) we determine whether it is "more likely than not" that the tax positions will be sustained based on the technical merits of the position: and (2) for those positions that meet the "more likely than not" recognition threshold, we recognize the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority.
Further, due to the uncertainty associated with the extent and ultimate impact of the significant supply chain constraints affecting the automotive industry, as well as the potential impact of geopolitical conflicts or events and macroeconomic factors, including sustained or increased inflation, we may experience lower than projected earnings in certain jurisdictions in future periods and, as a result, it is reasonably possible that changes in valuation allowances could be recognized in future periods and such changes could be material to our financial statements. 40 Unrecognized Income Tax Benefits We record uncertain tax positions on the basis of a two-step process whereby: (1) we determine whether it is "more likely than not" that the tax positions will be sustained based on the technical merits of the position: and (2) for those positions that meet the "more likely than not" recognition threshold, we recognize the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority.
We also expensed approximately $1.8 million for the write-off of a portion of the unamortized debt issuance costs that we had been amortizing over the expected life of the borrowing, and approximately $3.4 million for the payment of an early redemption premium.
This resulted in a principal payment of $220.0 million and $0.2 million in accrued interest. We also expensed approximately $1.8 million for the write-off of a portion of the unamortized debt issuance costs that we had been amortizing over the expected life of the borrowing, and approximately $3.4 million for the payment of an early redemption premium.
As of December 31, 2022, our investment in REE shares was valued at $1.9 million resulting in an unrealized loss of $25.5 million for the year ended December 31, 2022. This compares to an unrealized gain of $24.4 million associated with our investment in REE shares for the year ended December 31, 2021.
As of December 31, 2023, our investment in REE shares was valued at $0.8 million resulting in an unrealized loss of $1.1 million for the year ended December 31, 2023. This compares to an unrealized loss of $25.5 million associated with our investment in REE shares for the year ended December 31, 2022.
Year Ended December 31, 2022 2021 2020 (in millions) Net income (loss) $ 64.3 $ 5.9 $ (561.1) Interest expense 174.5 195.2 212.3 Income tax expense (benefit) 2.0 (4.7) (49.2) Depreciation and amortization 492.1 544.3 521.9 EBITDA $ 732.9 $ 740.7 $ 123.9 Restructuring and acquisition-related costs 30.2 49.4 67.2 Debt refinancing and redemption costs 6.4 34.0 7.9 Loss on sale of business — 2.7 1.0 Impairment charges — — 510.0 Unrealized loss (gain) on equity securities 25.5 (24.4) — Pension settlements — 42.3 0.5 Non-recurring items: Malvern Fire charges (insurance recoveries), net (39.1) (11.4) 9.3 Gain on bargain purchase of business (13.6) — — Acquisition-related fair value inventory adjustment 5.0 — — Total Segment Adjusted EBITDA $ 747.3 $ 833.3 $ 719.8 33 LIQUIDITY AND CAPITAL RESOURCES Our primary liquidity needs are to fund debt service obligations, capital expenditures and working capital requirements, in addition to advancing our strategic initiatives.
Year Ended December 31, 2023 2022 2021 (in millions) Net income (loss) $ (33.6) $ 64.3 $ 5.9 Interest expense 201.7 174.5 195.2 Income tax expense (benefit) 9.1 2.0 (4.7) Depreciation and amortization 487.2 492.1 544.3 EBITDA $ 664.4 $ 732.9 $ 740.7 Restructuring and acquisition-related costs 25.2 30.2 49.4 Debt refinancing and redemption costs 1.3 6.4 34.0 Loss on sale of business — — 2.7 Unrealized loss (gain) on equity securities 1.1 25.5 (24.4) Pension curtailment and settlement charges 1.3 — 42.3 Non-recurring items: Malvern Fire insurance recoveries, net of charges — (39.1) (11.4) Gain on bargain purchase of business — (13.6) — Acquisition-related fair value inventory adjustment — 5.0 — Total Segment Adjusted EBITDA $ 693.3 $ 747.3 $ 833.3 34 LIQUIDITY AND CAPITAL RESOURCES Our primary liquidity needs are to fund debt service obligations, capital expenditures, R&D spending, including further development of our electrification product portfolio, and working capital requirements, in addition to advancing our strategic initiatives.
In 2021, we made voluntary prepayments totaling $21.2 million on our Term Loan A Facility and $238.8 million on our Term Loan B Facility. As a result, we expensed approximately $2.5 million for the write-off of a portion of the unamortized debt issuance costs that we had been amortizing over the expected life of these borrowings.
Also in 2023, we made voluntary prepayments totaling $26.0 million on our Term Loan A Facility and $20.2 million on our Term Loan B Facility. As a result, we expensed approximately $1.1 million for the write-off of a portion of the unamortized debt issuance costs that we had been amortizing over the expected life of these borrowings.
Other, net Other, net, which includes the net effect of foreign exchange gains and losses, our proportionate share of earnings from equity in unconsolidated subsidiaries, and all components of net periodic pension and postretirement benefit costs other than service costs, was expense of $1.8 million in 2022, as compared to expense of $3.2 million in 2021. 29 INCOME TAX EXPENSE (BENEFIT) Income tax expense was $2.0 million in 2022, as compared to an income tax benefit of $4.7 million in 2021.
Other income (expense), net We include the net effect of foreign exchange gains and losses, our proportionate share of earnings from equity in unconsolidated subsidiaries, and all components of net periodic pension and postretirement benefit costs other than service costs in Other income (expense), net, which was income of $8.1 million in 2023, as compared to expense of $1.8 million in 2022. 30 INCOME TAX EXPENSE Income tax expense was $9.1 million in 2023, as compared to $2.0 million in 2022.
As a result, we have experienced increased volatility in our production schedules, including manufacturing downtime, often with little notice from customers, higher inventory levels and increased labor costs, which have negatively impacted our results of operations and cash flows during this period.
As a result, we have continued to experience volatility in our production schedules, including manufacturing downtime, often with limited notice from customers, higher inventory levels and increased labor costs, which have negatively impacted our results of operations and cash flows during these periods.
The following factors impacted cash provided by operating activities: Impact of Supply Chain Constraints We experienced an adverse impact on cash flows from operating activities as a result of the significant supply chain constraints that continued to impact the automotive industry during the year ended December 31, 2022, including increased metal and commodity costs, higher utility costs, increased transportation costs, higher labor costs and labor shortages.
The following factors impacted cash provided by operating activities: Impact of Supply Chain Constraints In both 2023 and 2022, we experienced an adverse impact on cash flows from operating activities as a result of the significant supply chain constraints that continued to impact the automotive industry, including volatility in metal, commodity and utility costs, shortages of certain raw materials and components, increased transportation costs, higher labor costs and labor shortages.
Statement of Operations Information (in millions) Year Ended December 31, 2022 Year Ended December 31, 2021 Net sales $ 4,429.5 $ 3,983.0 Gross profit 445.2 410.8 Income (loss) from operations 25.1 (27.4) Net loss (59.7) (158.6) Balance Sheet Information (in millions) December 31, 2022 December 31, 2021 Current assets $ 1,061.9 $ 1,034.6 Noncurrent assets 2,317.9 2,524.2 Current liabilities 1,360.4 1,183.7 Noncurrent liabilities 3,345.3 3,791.1 Redeemable preferred stock — — Noncontrolling interest — — At December 31, 2022 and December 31, 2021, amounts owed by the Combined Entities to non-guarantor entities totaled approximately $945 million and $800 million, respectively, and amounts owed to the Combined Entities from non-guarantor entities totaled approximately $620 million and $655 million, respectively. 38 CYCLICALITY AND SEASONALITY Our operations are cyclical because they are directly related to worldwide automotive production, which is itself cyclical and dependent on general economic conditions and other factors.
Statement of Operations Information (in millions) Year Ended December 31, 2023 Year Ended December 31, 2022 Net sales $ 4,376.7 $ 4,429.5 Gross profit 339.2 445.2 Income (loss) from operations (91.4) 25.1 Net loss (182.4) (59.7) Balance Sheet Information (in millions) December 31, 2023 December 31, 2022 Current assets $ 1,009.2 $ 1,061.9 Noncurrent assets 2,723.4 2,317.9 Current liabilities 1,512.2 1,360.4 Noncurrent liabilities 3,252.2 3,345.3 Redeemable preferred stock — — Noncontrolling interest — — At December 31, 2023 and December 31, 2022, amounts owed by the Combined Entities to non-guarantor entities totaled approximately $1,090 million and $945 million, respectively, and amounts owed to the Combined Entities from non-guarantor entities totaled approximately $580 million and $620 million, respectively. 39 CYCLICALITY AND SEASONALITY Our operations are cyclical because they are directly related to worldwide automotive production, which is itself cyclical and dependent on general economic conditions and other factors.
SHIFT IN CONSUMER PREFERENCE AND OEM PRODUCTION TO LIGHT TRUCK, CROSS-OVER VEHICLES (CUVs) AND SPORT-UTILITY VEHICLES (SUVs) There has been a trend toward increased demand for light trucks, CUVs and SUVs in certain markets, while demand for passenger cars has decreased.
CONSUMER PREFERENCE AND OEM PRODUCTION FAVORING LIGHT TRUCKS, CROSS-OVER VEHICLES (CUVs) AND SPORT-UTILITY VEHICLES (SUVs) There continues to be increased demand for light trucks, CUVs and SUVs in certain markets, while demand for passenger cars has decreased.
As part of our restructuring actions, we incurred severance charges of approximately $3.5 million, as well as implementation costs, consisting primarily of plant exit costs and professional fees, of approximately $18.2 million during 2022.
As part of our restructuring actions, we incurred severance charges of approximately $7.2 million, as well as implementation costs, consisting primarily of plant exit costs and professional fees, of approximately $11.1 million during 2023.
Accounts receivable For the year ended December 31, 2022, we experienced a decrease in cash flow from operating activities of $62 million related to the change in our accounts receivable balance from December 31, 2021 to December 31, 2022, as compared to the change in our accounts receivable balance from December 31, 2020 to December 31, 2021.
Accounts receivable For the year ended December 31, 2023, we experienced an increase in cash flow from operating activities of approximately $46 million related to the change in our accounts receivable balance from December 31, 2022 to December 31, 2023, as compared to the change in our accounts receivable balance from December 31, 2021 to December 31, 2022.
Due to the ongoing uncertainty associated with the impact of the COVID-19 pandemic, the conflict between Russia and Ukraine and other factors causing, or exacerbating, these supply chain constraints, the ultimate impact on our net sales, results of operations and cash flows is unknown. INDUSTRY TRENDS There are a number of significant trends affecting the markets in which we compete.
Due to the ongoing uncertainty associated with these supply chain constraints, the ultimate impact on our net sales, results of operations and cash flows is unknown. 24 INDUSTRY TRENDS There are a number of significant trends affecting the markets in which we compete.
The changes in operating income and operating margin in 2022, as compared to 2021, were due to the factors discussed in Net sales, Cost of goods sold, SG&A and Restructuring and acquisition-related costs above. INTEREST EXPENSE Interest expense was $174.5 million in 2022 and $195.2 million in 2021.
Operating margin was 2.4% in 2023 as compared to 4.2% in 2022. The changes in operating income and operating margin in 2023, as compared to 2022, were primarily due to the factors discussed in Net sales, Cost of goods sold and SG&A above. INTEREST EXPENSE Interest expense was $201.7 million in 2023 and $174.5 million in 2022.
At December 31, 2022 we had over $1.4 billion of liquidity consisting of approximately $512 million of cash and cash equivalents, approximately $866 million of available borrowings under our Revolving Credit Facility and approximately $58 million of available borrowings under foreign credit facilities. We have no significant debt maturities before 2026.
At December 31, 2023 we had approximately $1.5 billion of liquidity consisting of approximately $520 million of cash and cash equivalents, approximately $892 million of available borrowings under our Revolving Credit Facility and approximately $85 million of available borrowings under foreign credit facilities. We have no significant debt maturities before 2026.
In 2021, we incurred severance charges of approximately $2.9 million, as well as implementation costs, consisting primarily of plant exit costs and professional fees, of approximately $40.3 million. We expect to incur approximately $10 million to $20 million of total restructuring costs in 2023.
In 2022, we incurred severance charges of approximately $3.5 million, as well as implementation costs, consisting primarily of plant exit costs and professional fees, of approximately $18.2 million. We expect to incur approximately $10 million to $20 million of total restructuring costs in 2024. We incurred integration charges of $6.9 million in 2023 as we furthered the integration of Tekfor.
In addition to our ordinary warranty provisions with our customers, we may be responsible for certain costs associated with product recalls and field actions, which are recorded at the time our obligation is probable and can be reasonably estimated. Our warranty accrual was $54.1 million as of December 31, 2022 and $59.5 million as of December 31, 2021.
In addition to our ordinary warranty provisions with our customers, we may be responsible for certain costs associated with product recalls and field actions, which are recorded at the time our obligation is probable and can be reasonably estimated.
IMPAIRMENT OF LONG-LIVED ASSETS Long-lived assets, excluding goodwill, to be held and used are reviewed for impairment whenever adverse events or changes in circumstances indicate a possible impairment.
See Note 3 - Goodwill and Other Intangible Assets for further detail regarding our goodwill. 42 IMPAIRMENT OF LONG-LIVED ASSETS Long-lived assets, excluding goodwill, to be held and used are reviewed for impairment whenever adverse events or changes in circumstances indicate a possible impairment.
During 2022 and 2021, we made adjustments to our warranty accrual to reflect revised estimates regarding our projected future warranty obligations. Actual experience could differ from the amounts estimated requiring adjustments to these liabilities in future periods.
Our warranty accrual was $66.3 million as of December 31, 2023 and $54.1 million as of December 31, 2022. During 2023 and 2022, we made adjustments to our warranty accrual to reflect revised estimates regarding our projected future warranty obligations. Actual experience could differ from the amounts estimated requiring adjustments to these liabilities in future periods.
As of December 31, 2021 and 2020, our valuation allowance was $201.7 million and $208.0 million, respectively.
As of December 31, 2022 and 2021, our valuation allowance was $217.5 million and $201.7 million, respectively.
Our effective income tax rate was 3.0% in 2022 as compared to (391.7)% in 2021. For the year ended December 31, 2022, we recognized a net income tax benefit of $7.5 million related to the release of a valuation allowance in a foreign jurisdiction.
In the year ended December 31, 2022, we recognized a net income tax benefit of $7.5 million related to the release of a valuation allowance in a foreign jurisdiction.
This resulted in principal payments totaling $700.0 million and $19.4 million in accrued interest. We also expensed approximately $9.6 million for the write-off of the unamortized debt issuance costs that we had been amortizing over the expected life of the borrowing, and approximately $21.9 million for the payment of an early redemption premium.
This resulted in a principal payment of $50.0 million and $0.9 million in accrued interest. We also expensed approximately $0.2 million for the write-off of a portion of the unamortized debt issuance costs that we had been amortizing over the expected life of this borrowing.
In addition to AAM's technology development relationships and organic growth in technology and processes, our joint venture partnerships and strategic acquisitions, including the Tekfor acquisition during 2022, have provided us with complementary technologies, expanded our product portfolio, diversified our global customer base, and strengthened our long-term financial profile through greater scale.
In order to effectively drive technology development, recognize cost synergies, and increase global footprint, the industry may continue to see consolidation in the supply base as companies recognize and respond to the need for scalability. 26 In addition to AAM's technology development relationships and organic growth in technology and processes, our joint venture partnerships and strategic acquisitions, including the Tekfor acquisition during 2022, have provided us with complementary technologies, expanded our product portfolio, diversified our global customer base, and strengthened our long-term financial profile through greater scale.
The Board’s active oversight reflects the importance of our DEI journey to our business and demonstrates the power of accountability to this critical initiative. With oversight from our Board and direction from senior leadership, our DEI Steering Committee (DEI Committee) helps to ensure that our initiatives are guided by the experiences and recommendations of our associates.
With oversight from our Board and direction from senior leadership, our DEI Steering Committee (DEI Committee) helps to ensure that our initiatives are guided by the experiences and recommendations of our associates.
Due to the uncertainty associated with the extent and ultimate impact of the significant supply chain constraints affecting the automotive industry, including COVID-19, the semiconductor shortage and resulting impact on global automotive production volumes, and the conflict between Russia and Ukraine, we may experience lower than projected earnings in certain jurisdictions in future periods, and as a result, it is reasonably possible that changes in valuation allowances could be recognized in future periods and such changes could be material to our financial statements.
Due to the uncertainty associated with the extent and ultimate impact of the significant supply chain constraints affecting the automotive industry, as well as the potential impact of geopolitical conflicts or events and macroeconomic factors, including sustained or increased inflation, we may experience lower than projected earnings in certain jurisdictions in future periods, and as a result, it is reasonably possible that changes in valuation allowances could be recognized in future periods and such changes could be material to our financial statements.
The ability to respond timely to the continued advancement of technology and product innovation, as well as the capability to source programs on a global basis, are critical to attracting and retaining business in our global markets. 23 INCREASED INVESTMENT IN VEHICLE ELECTRIFICATION AND DEMAND FOR EMISSIONS REDUCTIONS The electrification of vehicles continues to expand, driven by a shift in focus by certain OEMs toward battery and hybrid electric vehicles, government regulations related to emissions, such as the Corporate Average Fuel Economy standards, and consumer demand for greater vehicle performance, enhanced functionality, increased electronic content and vehicle connectivity, reduced environmental impact and affordable convenience options.
INDUSTRY SHIFT TO VEHICLE ELECTRIFICATION AND INCREASED DEMAND FOR EMISSIONS REDUCTIONS The electrification of vehicles continues to expand, driven by a shift in focus by certain OEMs toward battery and hybrid electric vehicles, government regulations related to emissions, such as the Corporate Average Fuel Economy standards, and consumer demand for greater vehicle performance, enhanced functionality, increased electronic content and vehicle connectivity, reduced environmental impact and affordable convenience options.
See Note 4 - Long-Term Debt for further detail on the Amended and Restated Credit Agreement.
In March 2022, Holdings and AAM, Inc. entered into the Amended and Restated Credit Agreement. See Note 4 - Long-Term Debt for further detail on the Amended and Restated Credit Agreement.
We have responded to this trend by implementing and launching programs and initiatives addressing each topic under ESG, such as E 4 (E-to-the-fourth), AAM’s energy and environmental sustainability program to drive continuous improvement in our operations by reducing energy consumption, greenhouse gas (GHG) emissions and water use while minimizing waste and lessening the environmental impact of our production operations.
The ability of OEMs and suppliers to continually communicate and meet expectations on ESG programs and initiatives, and comply with expanding regulatory requirements, will impact their competitive advantage to attract and retain business, as well as a skilled workforce. 25 We have responded to this trend by implementing and launching programs and initiatives addressing each topic under ESG, such as E 4 (E-to-the-fourth), AAM’s energy and environmental sustainability program to drive continuous improvement in our operations by reducing energy consumption, greenhouse gas (GHG) emissions and water use while minimizing waste and lessening the environmental impact of our production operations.
NET INCOME AND EARNINGS PER SHARE (EPS) Net income was $64.3 million in 2022 as compared to $5.9 million in 2021. Diluted earnings per share was $0.53 in 2022 as compared to $0.05 per share in 2021.
NET INCOME (LOSS) AND EARNINGS (LOSS) PER SHARE (EPS) Net loss was $33.6 million in 2023 as compared to net income of $64.3 million in 2022. Diluted loss per share was $0.29 in 2023 as compared to diluted income per share of $0.53 in 2022.
Gain on bargain purchase of business On June 1, 2022, our acquisition of Tekfor became effective, which resulted in a gain on bargain purchase of $13.6 million. See Note 16 - Acquisitions and Dispositions for additional detail on this acquisition. Unrealized gain (loss) on equity securities We have an investment in the equity securities of REE Automotive, an e-mobility company.
Gain on bargain purchase of business On June 1, 2022, our acquisition of Tekfor became effective, which resulted in a gain on bargain purchase of $13.6 million for the year ended December 31, 2022. See Note 16 - Acquisitions and Dispositions for additional detail on this acquisition.
(units in millions, except percentages) 2023 Outlook % change 2022 % change 2021 North America 15.1 5.6 % 14.3 10.0 % 13.0 Source: IHS Markit January 2023 Production volumes in North America increased in 2022 as compared to 2021, as the impact of the semiconductor shortage and other supply chain constraints lessened in 2022 as compared to 2021.
(units in millions, except percentages) 2024 Outlook % change 2023 % change 2022 North America 15.8 1.3 % 15.6 9.1 % 14.3 Source: S&P Global Mobility, January 2024 Production volumes in North America increased in 2023, as compared to 2022, as the impact of supply chain constraints lessened.
Supply Chain Constraints Impacting the Automotive Industry During 2022, the automotive industry has experienced, and continues to experience, significant disruptions in the supply chain, including a shortage of semiconductor chips used by our customers, increased metal and commodity costs, higher utility costs, increased transportation costs, higher labor costs and labor shortages.
Supply Chain Constraints Impacting the Automotive Industry The automotive industry continues to experience significant disruptions in the supply chain, including volatility in metal, commodity and utility costs, increased transportation costs, higher labor costs and labor shortages.
The synergies achieved, or expected to be achieved through our strategic initiatives, enhance AAM's ability to compete in today's technological and regulatory environment, while remaining cost competitive through increased scale and integration. 25 EVOLUTION OF THE AUTOMOTIVE INDUSTRY AS DEMAND FOR AUTONOMOUS VEHICLES AND RIDE-SHARING INCREASES A developing trend is the expectation that autonomous, self-driving cars are expected to become more common with continued advancements in technology, including applications such as last mile delivery.
EVOLUTION OF THE AUTOMOTIVE INDUSTRY AS DEMAND FOR AUTONOMOUS VEHICLES AND RIDE-SHARING INCREASES A developing trend is the expectation that autonomous, self-driving cars are expected to become more common with continued advancements in technology, including applications such as last mile delivery.
For products and customers with actual warranty payment experience, we estimate warranty costs principally based on past claims history. For certain products and customers, actual warranty payment experience does not exist or is not mature.
Our estimated warranty obligations for products sold are based on significant management estimates, with input from our warranty, sales, engineering, quality and legal departments. For products and customers with actual warranty payment experience, we estimate warranty costs principally based on past claims history. For certain products and customers, actual warranty payment experience does not exist or is not mature.
In January 2023, we paid $10.1 million as a result of the Notice of Tax Due that was received from the Internal Revenue Service in December 2022. See Note 9 - Income Taxes for additional detail regarding the Notice of Tax Due.
Income taxes Income taxes paid, net was $54.9 million in 2023, as compared to $40.4 million in 2022. In 2023, we paid $10.1 million as a result of the Notice of Tax Due that was received from the Internal Revenue Service in the fourth quarter of 2022.
Reconciliation of Non-GAAP and GAAP Information In addition to results reported in accordance with accounting principles generally accepted in the United States of America (GAAP) in this MD&A, we have provided certain non-GAAP financial measures such as EBITDA and Total Segment Adjusted EBITDA.
The remainder of the change in Segment Adjusted EBITDA for the Metal Forming segment was attributable to increased manufacturing costs, primarily labor costs, as well as the impact of production inefficiencies at certain of our locations due, in part, to labor shortages. 33 Reconciliation of Non-GAAP and GAAP Information In addition to results reported in accordance with accounting principles generally accepted in the United States of America (GAAP) in this MD&A, we have provided certain non-GAAP financial measures such as EBITDA and Total Segment Adjusted EBITDA.
The expected weighted-average long-term rates of return on our plan assets were 6.75% for our U.S. plans, and 4.00% for our non-U.S. plans in 2022. 40 We developed these rates of return assumptions based on future capital market expectations for the asset classes represented within our portfolio and a review of long-term historical returns.
We developed these rates of return assumptions based on future capital market expectations for the asset classes represented within our portfolio and a review of long-term historical returns. The asset allocation for our plans was developed in consideration of the demographics of the plan participants and expected payment stream of the liability.