CNA Financial Corporation (CNAF) was incorporated in 1967 and is an insurance holding company. References to “CNA,” “the Company,” “we,” “our,” “us” or like terms refer to the business of CNAF and its subsidiaries. CNA's property and casualty and remaining life and group insurance operations are primarily conducted by Continental Casualty Company (CCC), The Continental Insurance Company, Western Surety Company, CNA Insurance Company Limited, Hardy Underwriting Bermuda Limited and its subsidiaries (Hardy), and CNA Insurance Company (Europe) S.A. Loews Corporation (Loews) owned approximately 89.6%92% of our outstanding common stock as of December 31, 2020.2023.

Our insurance products primarily include commercial property and casualty coverages, including surety. Our services include warranty, risk management information services and claims administration. Our products and services are primarily marketed through independent agents, brokers and managing general underwriters to a wide variety of customers, including small, medium and large businesses, insurance companies, associations, professionals and other groups. The property and casualty insurance industry is highly competitive, both as it relates to rate and service. We compete with a large number of stock and mutual insurance companies, as well as other entities, for both distributors and customers.

Our commercial property and casualty underwriting operations presence in the United States of America (U.S.) consists of field underwriting locations and centralized processing operations which handle policy processing, billing and collection activities and also act as call centers to optimize service. Our claim operations in the U.S. consists of primary locations where we handle multiple claim types and key business functions, as well as regional claim offices which are aligned with our underwriting field structure. We also have property and casualty underwriting operations in Canada, the United Kingdom (U.K.) and Continental Europe, as well as access to business placed at Lloyd's of London through Syndicate 382.

Our commercial property and casualty insurance operations are managed and reported in three business segments: Specialty, Commercial and International, which we refer to collectively as Property & Casualty Operations. Our operations outside of Property & Casualty Operations are managed and reported in two business segments: Life & Group and Corporate & Other. Each segment is managed separately due to differences in their markets and product mix. Discussion of each segment, including the products offered, customers served and distribution channels used, is set forth in the Management's Discussion and Analysis (MD&A) included under Item 7 and in Note OP to the Consolidated Financial Statements included under Item 8.

The insurance industry is subject to comprehensive and detailed regulation and supervision. Regulatory oversight by applicable agencies is exercised through review of submitted filings and information, examinations (both financial and market conduct), direct inquiries and interviews. Each domestic and foreign jurisdiction has established supervisory agencies with broad administrative powers relative to licensing insurers and agents, approving policy forms, establishing reserve requirements, prescribing the form and content of statutory financial reports and regulating capital adequacy and the type, quality and amount of investments permitted. Such regulatory powers also extend to premium rate regulations requiring rates not be excessive, inadequate or unfairly discriminatory. In addition to regulation of dividends by insurance subsidiaries, intercompany transfers of assets or payments may be subject to prior notice or approval by insurance regulators, depending on the size of such transfers and payments in relation to the financial position of the insurance subsidiaries making the transfer or payments.

As our insurance operations are conducted in both domestic and foreign jurisdictions, we are subject to a number of regulatory agency requirements applicable to a portion, or all, of our operations. These include but are not limited to, the State of Illinois Department of Insurance (which is our global group-wide supervisor), the U.K. Prudential Regulatory Authority and Financial Conduct Authority, the Office of Superintendent of Financial Institutions in Canada, the Luxembourg insurance regulator Commissariat aux Assurances (the CAA) and the Bermuda Monetary Authority.

Domestic insurers are also required by state insurance regulators to provide coverage to certain insureds who would not otherwise be considered eligible by the insurers. Each state dictates the types of insurance and the level of coverage that must be provided to such involuntary risks. Our share of these involuntary risks is mandatory and generally a function of our respective share of the voluntary market by line of insurance in each state.

Further, domestic insurance companies are subject to state guaranty fund and other insurance-related assessments. Guaranty funds are governed by state insurance guaranty associations which levy assessments to meet the funding needs of insolvent insurer estates. Other insurance-related assessments are generally levied by state agencies to fund various organizations, including disaster relief funds, rating bureaus, insurance departments and workers' compensation second injury funds, and by industry organizations that assist in the statistical analysis and ratemaking process, and we have the ability to recoup certain of these assessments from policyholders.

Although the U.S. federal government does not currently directly regulate the business of insurance, federal legislative and regulatory initiatives can affect the insurance industry. These initiatives and legislation include proposals relating to terrorism and natural catastrophe exposures, cybersecurity risk management, federal financial services reforms and certain tax reforms.

Hardy, a specialized Lloyd's of London (Lloyd's) underwriter, is also supervised by the Council of Lloyd's, which is the franchisor for all Lloyd's operations. The Council of Lloyd's has wide discretionary powers to regulate Lloyd's underwriting, such as establishing the capital requirements for syndicate participation. In addition, the annual business plan of each syndicate is subject to the review and approval of the Lloyd's Franchise Board, which is responsible for business planning and monitoring for all syndicates.

The IAIS has adopted a Common Framework (ComFrame) for the Supervisionsupervision of Internationally Active Insurance Groups (IAIGs), which is focused on the effective group-wide supervision of internationally active insurance groups,IAIGs, such as CNA. As part of ComFrame, the IAIS is developinghas developed a global insurance capital standard for insurance groups. Whilethat, if adopted in the general parametersU.S., would be applicable to U.S.-based IAIGs. Certain elements of ComFrame have been finalized, many critical areas ofwere incorporated into regulatory guidelines issued by the global insurance capital standard are still under consideration. Certain jurisdictional regulatory regimes are subject to revision in response to these global developments.

The NAIC developed an approach to group capital regulation and solvency-monitoring activities using the Group Capital Calculation (GCC). While historically the current U.S. regulatory regime iswas primarily based on legal entity regulation, the GCC will quantifyquantifies risk across the insurance group and also provide additional financial information to regulators to assess the financial condition of non-insurance

There have also been definitive developments with respect to prudential insurance supervision unrelated to the IAIS activities. On September 22, 2017,In addition, the U.S. Treasury Department, the U.S. Trade Representative (USTR) and the E.U. announced they had formally signed a covered agreement on Prudential Measures Regarding Insuranceforeign regulatory environment in which we operate is continuously evolving, with both existing and Reinsurance (U.S.-E.U. Covered Agreement). The U.S.-E.U. Covered Agreement requires U.S. states to prospectively eliminate the requirementprospective regulations that domestic insurance companies must obtain collateral from E.U. reinsurance companies that are not licensed in their state (alien reinsurers) in order to obtain reserve credit under statutory accounting. In exchange, the E.U. will not impose local presence requirements on U.S. firms operating in the E.U.,implicate aspects of our corporate governance, risk management practices, public disclosures, environmental, social and effectively must defer to U.S. group capital regulation for these firms. On December 18, 2018, the U.S. Treasury Department, the USTR,governance (ESG) related issues, artificial intelligence and the U.K. announced they formally signed the Bilateral Agreement on Prudential Measures Regarding Insurance and Reinsurance (U.S.-U.K. Covered Agreement). This Agreement has similar terms as the U.S.-E.U. Covered Agreement. Because these covered agreements are not self-executing, U.S. state laws will need to be revised to change reinsurance collateral requirements to conform to the provisions within each of the agreements.

We focus on attracting, developing and retaining top-tier talent to reflect the bestspecialist nature of our business.

CNA leaders engage regularly with our employees on their performance and professional development. We gather employee feedback through pulse surveys and routine dialogue with our employee resource groups and leaders from across the enterprise. Our annual talent and ultimately drivingsuccession planning process culminates in a review with leadership of key talent retention and promotion, as well as a review of our business performance.succession plans. Our Diversity and Inclusion strategy includes employee-led resource groups, regular trainingperformance management cycle seeks to ensure that employees have goals and development for all employeesplans refreshed at least annually and partnerships with diverse colleges, universitiesperformance review conversations are held between managers and non-profit organizations that share in our inclusion mission.We also have an established corporate social responsibility strategy with a focus on four core areas: education, environment, inclusion and well-being.Our employees participate in a wide array of volunteer activities and we support their charitable giving by matching employee contributions to qualified nonprofit organizations.direct reports throughout the annual performance period.

We offer comprehensive compensation and benefits packages to oureligible employees including a 401k Plan,plan, healthcare and insurance benefits, health savings and flexible spending accounts, paid time off and certain family assistance programs, including paid family leave, flexible work arrangements and surrogacy and adoption assistance plans, amongst others.plans.

In response to the COVID-19 pandemic in March 2020, we pivoted toWe also have a remote working environment for substantially all of our employeescorporate social responsibility strategy with a commitmentfocus on four core areas: DEI, protecting the environment, science, technology, engineering and mathematics (STEM) education, and disaster preparedness and recovery. Our employees are encouraged to the safetyparticipate in a wide array of our employeesvolunteer activities and the communities we serve. In the fourth quarter we began re-opening some offices on a voluntary basissupport their charitable giving by matching employee contributions to accommodate employees seeking the flexibility to work from the office, while carefully monitoring the conditions in those areas and continuing to adhere to health and safety protocols.qualified nonprofit organizations.

We maintain insurance reserves to cover our estimated ultimate unpaid liability for claim and claim adjustment expenses, including the estimated cost of the claims adjudication process, for reported and unreported claims. Insurance reserves are not an exact calculation of liability but instead are complex management estimates developed utilizing a variety of actuarial reserve estimation techniques as of a given reporting date. The reserve estimation process involves a high degree of judgment and variability and is subject to a number of factors which are highly uncertain. These variablesfactors can be affected by both changes in internal processes and external events. Key variables include frequency of claims, claim severity, mortality, morbidity, discount rates, economic, social and medical inflation, claim handling policies and procedures, case reserving approach, underwriting and pricing policies, changes in the legal and regulatory environment and the lag time between the occurrence of an insured event and the time of its ultimate settlement. Mortality is the relative incidence of death. Morbidity is the frequency and severity of injury, illness, sickness and diseases contracted.

There is generally a higher degree of variability in estimating required reserves for long-tail coverages, such as long-term care, workers' compensation, general liability and professional liability, as they require a relatively longer period of time for claims to be reported and settled. The impact of changes in economic and social inflation, and medical costs are also more pronounced for long-tail coverages due to the longer settlement period. Certain risks and uncertainties associated with our insurance reserves are outlined in the Critical Accounting Estimates and the Reserves - Estimates and Uncertainties sections of MD&A in Item 7.

Our active lifefuture policy benefit reserves for long termlong-term care policies are based on our best estimate actuarial assumptions, as of September 30, 2020, due to a reserve unlockingwhich are assessed quarterly and updated at that date.least annually. Key actuarial assumptions include morbidity, persistency (the percentage(inclusive of policies remaining in force)mortality), discount rate andanticipated future premium rate increases. Estimating future experience for long term care policies is highly uncertain because theincreases and expenses. The adequacy of the reserves is contingent upon actual experience and our future expectations related to these key assumptions. If actual or expected future experience differs from these assumptions, the reserves may not be adequate, requiring us to addincrease reserves. The required increase in reserves would beis recorded as a charge against our earnings in the period in which reserves are determined to be insufficient. These charges have been and in the future could be substantial. The reserves are discounted using upper-medium grade fixed income instrument yields as of each reporting date. Discount rates are subject to interest rate and market volatility. See the Life & Group Policyholder Reserves portion of Reserves - Estimates and Uncertainties section of MD&A in Item 7 for more information.

The extent of our losses from catastrophes is a function of the total amount of our insured exposures in the affected areas, the frequency and severity of the events themselves, the level of our reinsurance coverage, reinsurance reinstatement premiums and state residual market assessments, if any. It can take a long time for the ultimate cost of any catastrophe losses to us to be finally determined, as a multitude of factors contribute to such costs, including evaluation of general liability and pollution exposures, infrastructure disruption, business interruption and reinsurance collectibility. Further, significant catastrophic events or a series of catastrophic events have the potential to impose financial stress on the reinsurance industry, which could impact our ability to collect amounts owed to us by reinsurers, thereby resulting in higher net incurred losses.

or eliminate the program, which could adversely affect our business by increasing our exposure to terrorism losses, or by lowering our business volume through efforts to avoid that exposure. For a further discussion of TRIPRA, see Part II, Item 7, MD&A - Catastrophes and Related Reinsurance.

As a result of the items discussed above, catastrophe losses are particularly difficult to estimate, could cause us to exhaust our available reinsurance limits, could lead to large losses and could adversely affect the cost and availability of reinsurance. Accordingly, catastrophic events could have a material adverse effect on our business, results of operations, financial condition and liquidity.

We face potential exposure to various types of existing, new and emerging mass tort claims, including those related to exposure to potentially harmful products or substances, such as glyphosate, lead paint, per- and polyfluoroalkyl substances (PFAS) and opioids; claims arising from changes that expand the right to sue, remove limitations on recovery, extend the statutes of limitations or otherwise repeal or weaken tort reforms, such as those related to abuse reviver statutes, including New York reviver statutes; and claims related to new and emerging theories of liability, such as those related to global warming and climate change. Evolving judicial interpretations and new legislation regarding the application of various tort theories and defenses, including application of various theories of joint and several liability, as well as the application of insurance coverage to these claims, give rise to new claimantand potentially more severe claim activity. EmergingFor example, we have recorded, and may continue to record, increases in our mass tort reserves, driven substantially by abuse reviver statutes that have resulted in increased claims. Similar and continuing mass tort claim activity, including activity based on such changing judicial interpretations and recent and proposed legislation, could have a material adverse effect on our business, results of operations and financial condition.

All aspects of the insurance industry are highly competitive and we must continuously allocate resources to refine and improve our insurance products and services to remain competitive. We compete with a large number of stock and mutual insurance companies and other entities, some of which may be larger or have greater financial or other resources than we do, for both distributors and customers. This includes agents, brokers and managing general underwriters who may increasingly compete with us to the extent that markets continue to provide them with direct access to providers of capital seeking exposure to insurance risk. Insurers compete on the basis of many factors, including products, price, services, ratings and financial strength. The competitor landscape has evolved substantially in recent years, with significant consolidation and new market entrants, such as insurtech firms, resulting in increased pressures on our ability to remain competitive, particularly in obtaining pricing that is both attractive to our customer base and risk-appropriate to us.

In addition, the property and casualty market is cyclical and has experienced periods characterized by relatively high levels of price competition, resulting in less restrictive underwriting standards and relatively low premium rates, followed by periods of relatively lower levels of competition, more selective underwriting standards and relatively high premium rates. During periods in which price competition is high, weWe may lose business to competitors offering competitive insurance products at lower prices. As a result, our premium levels and expense ratio could be materially adversely impacted.

Technological changes in the way insurance transactions are completed in the marketplace, and our ability to react effectively to such change, may present significant competitive risks. For example, more insurers are utilizing "big data" analytics to make underwriting and other decisions that impact product design and pricing. If such utilization is more effective than how we use similarour data and information, we will be at a competitive disadvantage. There can be no assurance that we will continue to compete effectively with our industry peers due to technological changes; accordingly, this may have a material adverse effect on our business, results of operations and financial condition.

In addition, agents and brokers, technology companies, or other third parties may create alternate distribution channels for commercial business that may adversely impact product differentiation and pricing. For example, they may create a digitally enabled distribution channel that may adversely impact our competitive position. Our efforts or the efforts of agents and brokers with respect to new products or alternate distribution channels, as well as changes in the way agents and brokers utilize greater levels of data and technology, could adversely

The successful execution of our business planstrategies depends on our ability to attract and retain qualified talent. Due to the intense competition in our industry and from businesses outside the industry for qualified employees, especially those in key positions and those possessing highly specialized knowledge and industry experience in areas such as underwriting, data and analytics and technology, we may encounter obstacles to our ability to attract and retain such employees, which could materially adversely affect our business, results of operations and financial condition.

Loews beneficially owned approximately 89.6%92% of our outstanding shares of common stock as of December 31, 2020,2023, and is in a position to control actions that require the consent of stockholders, including the election of directors, amendment of our Restated Certificate of Incorporation and any merger or sale of substantially all of our assets. In addition, fivefour officers of Loews, currentlyalong with the Co-Chairman of the Board of Loews, serve on our Board of Directors. We have also entered into services agreements and a registration rights agreement with Loews, and we may in the future enter into other agreements with Loews. It is possible that potential conflicts of interest could arise in the future for our directors who are also officers and/or directors of Loews with respect to a number of areas relating to the past and ongoing relationships of Loews and us, including tax and insurance matters, financial commitments and sales of common stock pursuant to registration rights or otherwise.

Our investment portfolio is exposed to various risks, such as interest rate, credit spread, issuer default, equity prices and foreign currency, which are unpredictable. Financial markets are highly sensitive to changes in economic conditions, monetary policies, tax policies, interest rates, domestic and international geopolitical issues and many other factors. Changes in financial markets, including fluctuations in interest rates, credit, equity prices and foreign currency prices, and many other factors beyond our control can adversely affect the value of our investments, the realization of investment income and the rate at which we discount certain liabilities. Our investment portfolio is also subject to increased valuation uncertainties when investment markets are illiquid. The valuation of investments is more subjective when markets are illiquid, thereby increasing the risk that the estimated fair value (i.e., the carrying amount) of the portion of our investment portfolio that is carried at fair value in our financial statements is not reflective of the prices at which actual transactions could occur.

We have significant holdings in fixed maturity investments that are sensitive to changes in interest rates. A decline in interest rates may reduce the returns earned on new fixed maturity investments, thereby reducing our net investment income, while an increase in interest rates may reduce the value of our existing fixed maturity investments, which could increase our net unrealized losses or reduce our net unrealized gains included in Accumulated other comprehensive income (AOCI). The value of our fixed maturity investments is also subject to risk that certain investments may default or become impaired due to deterioration in the financial condition of issuers of the investments we hold or in the underlying collateral of the security.

In addition, we invest a portion of our assets in limited partnerships and common stock which are subject to greater market volatility than our fixed maturity investments. Limited partnership investments generally provide a lower level of liquidity than fixed maturity or equity investments, which may also limit our ability to withdraw funds from these investments. The timing and amount of income or losses on such investments is inherently variable and can contribute to volatility in reported earnings.

Further, we hold a portfolio of commercial mortgage loans. We are subject to risk related to the recoverability of loan balances, which is influenced by declines in the estimated cash flows from underlying property leases, fair value of collateral, refinancing risk and the creditworthiness of tenants of credit tenant loan properties,

As a result of these factors, we may not earn an adequate return on our investments, may be required to write-downwrite down the value of our investments and may incur losses on the disposition of our investments all of which could materially adversely affect our business, results of operations and financial condition.

We use various modeling techniques and data analytics (e.g., scenarios, predictive, stochastic and/orand forecasting) to analyze and estimate exposures, loss trends and other risks associated with our assets and liabilities. This includes both proprietary and third partythird-party modeled outputs and related analyses to assist us in decision-making related to underwriting, pricing, capital allocation, reserving, investing, reinsurance and catastrophe risk, among other things. We incorporate numerous assumptions and forecasts about the future level and variability of policyholder behavior, loss frequency and severity, interest rates, equity markets, inflation, capital requirements, and currency exchange rates, among others. The modeled outputs and related analyses from both proprietary models and third parties are subject to various assumptions, uncertainties, model design errors and the inherent limitations of any statistical analysis. Further, climate change may make modeled outcomes less certain or produce new, non-modeled risks.

In addition, the effectiveness of any model can be degraded by operational risks, including the improper use of the model, input errors, data errors and human error. As a result, actual results may differ materially from our modeled results. TheOur profitability and financial condition of the Company substantially depends on the extent to which our actual experience is consistent with assumptions we use in our models and ultimate model outputs. If, based upon these models or other factors, we misprice our products or fail to appropriately estimate the risks we are exposed to, our business, results of operations and financial condition may be materially adversely affected.

Our business is highly dependent upon our ability to perform, in an efficient and uninterrupted manner, through our employees or vendor relationships and using our and their facilities and systems, necessary business functions, (suchsuch as internet support and 24-hour call centers),centers, processing new and renewal business, andproviding customer service, processing and paying claims and other obligations. obligations and issuing financial statements.

Our, or our vendors', facilities and systems could become unavailable, inoperable, or otherwise impaired from a variety of causes, including natural events, such as hurricanes, tornadoes, windstorms, earthquakes, severe winter weather and fires, or other events, such as explosions, terrorist attacks, computer security breaches or cyber attacks,cyber-attacks, riots, hazardous material releases, medical epidemics or pandemics, utility outages, interruptions of our data processing and storage systems or the systems of third-party vendors, or unavailability of communications facilities. An interruption in our system availability occurred in March 2021 as a result of a cybersecurity attack we sustained. Please refer to the immediately following risk factor for further information regarding this incident. Likewise, we could experience a significant failure, interruption or corruption of one or more of our or our vendors' information technology, telecommunications, or other systems for various reasons, including significant failures or interruptions that might occur as existing systems are replaced or upgraded.

In addition, because our and our vendors' information technology and telecommunications systems interface with and depend on third-party systems, we could experience service denials if demand for such service exceeds capacity or a third-party system fails or experiences an interruption. If sustained or repeated, such events could result in a deterioration of our ability to write and process new and renewal business, provide customer service, pay claims in a timely manner, or perform other necessary business functions, including the ability to issue financial statements in a timely manner.functions.

The foregoing risks could expose us to monetary and reputational damages. Potential additional exposures relating to significant interruptions to our operations may include substantially increased compliance costs, and requiredas well as increased costs relating to investments in computer system and security-related upgrades, and security-relatedsuch costs may not be recoverable under our relevant insurance coverage. We have made, and continue to make, investments to improve our security and infrastructure. Some of these investments are a direct result of the March 2021 cybersecurity attack, described in the immediately following risk factor, which are not recoverable under existing insurance coverage.

A significant breach of our data security infrastructure may result from actions by our employees, vendors, third-party administrators, or unknown third parties or through cyber attacks. cyber-attacks. The risk of a breach can exist whether software services are in our or third party administered data centers or are cloud-based software services. Breaches have occurred, and may occur again, in our systems and in the systems of our vendors and third-party administrators.

Such a breach could affect our data framework or cause a failure to protect the personal information of our customers, claimants or employees, or sensitive and confidential information regarding our business or policyholders and may result in operational impairments and financial losses, as well as significant harm to our reputation. The riskreputation and the loss of a breach could increase as vendors increasingly offer cloud-based software services rather than software services which can be run within our data centersbusiness with existing or as we choose to move additional functions to the cloud.

give rise to legal liability and regulatory action under data protection and privacy laws, as well as evolving regulation in this regard. AnyDuring the second quarter of 2023, we were notified of a breach in the file transfer software, MOVEit Transfer, used by a vendor of one of our third-party administrators. This incident resulted in required breach notifications to the Company's long-term care policyholders, with such legalnotifications made by the subject vendor. While we do not believe such notifications and resultant actions will have a material adverse effect on our business, this or regulatory actionsimilar incidents, or any other such breach of our or our vendors’ data security infrastructure could have a material adverse effect on our business, results of operations and financial condition.

We may incur losses which arise from employees or third partythird-party service providers engaging in intentional, negligent or inadvertent misconduct, fraud, errors and omissions, failure to comply with internal guidelines, including with respect to underwriting authority, or failure to comply with regulatory requirements. Our or our third partythird-party service providers' controls may not be able to detect all possible circumstances of such non-compliantnoncompliant activity and the internal structures in place to prevent this activity may not be effective in all cases. Any losses relating to such non-compliant activity could adversely affect our business, results of operations and financial condition.

Portions of our insurance business is underwritten and serviced by third parties. With respect to underwriting, our contractual arrangements with third parties will typically grant them limited rights to write new and renewal policies, subject to contractual restrictions and obligations, including requiring them to underwrite within the terms of our licenses. Should these third parties issue policies that exceed these contractual restrictions, we could be deemed liable for such policies and subject to regulatory fines and penalties for any breach of licensing requirements. It is possible that in such circumstance we might not be fully indemnified for such third parties’ contractual breaches.

Additionally, we rely on certain third-party claims administrators, including the administratorsadministrator of our long termlong-term care claims, to handle policyholder services and perform significant claim administration and claim adjudication functions. Any failure by such administrator to properly perform service functions may result in losses as a result of over-payment of claims, legal claims against us and adverse regulatory enforcement exposure.

We have also licensed certain systems from third parties. We cannot be certain that we will have access to these systems or that our information technology or application systems will continue to operate as intended.

These risks could adversely impact our reputation and client relationships and have a material adverse effect on our business, results of operations and financial condition.

In the event that one or more of our vendors suffers a bankruptcy, is sold to another entity, sustains a significant business interruption or otherwise becomes unable to continue to provide products or services at the requisite level, we may be adversely affected. We may suffer operational impairments and financial losses associated with transferring business to a new vendor, assisting a vendor with rectifying operational difficulties, failure by vendors to properly perform service functions or assuming previously outsourced operations ourselves. Our inability to provide for appropriate servicing if a vendor becomes unable to fulfill its contractual obligations to

Insurance companies such as ours are subject to capital adequacy standards set by regulators to help identify companies that merit further regulatory attention. In the U.S., these standards apply specified risk factors to various asset, premium and reserve components of our legal entity statutory basis of accounting financial statements. Current rules, including those promulgated by insurance regulators and specialized markets, such as Lloyd's, require companies to maintain statutory capital and surplus at a specified minimum level determined using the applicable jurisdiction's regulatory capital adequacy formula. If we do not meet these minimum requirements, we may be restricted or prohibited from operating our business in the applicable jurisdictions and specialized markets. If we are required to record a material charge against earnings in connection with a change in estimated insurance reserves, or the occurrence of a catastrophic event or otherwise, or if we incur significant losses related to our investment portfolio, which severely deteriorates our capital position, we may violate these minimum capital adequacy requirements unless we are able to raise sufficient additional capital. We may be limited in our ability to raise significant amounts of capital on favorable terms or at all.

The IAIS has adopted a common frameworkComFrame for the supervision of internationally active insurance groupsIAIGs and continues to develophas developed a group basis Insurance Capital Standard (ICS). The NAIC is also developing a groupglobal capital standard that, is intendedif adopted in the U.S., would be applicable to be comparableU.S.-based IAIGs. The NAIC also developed the GCC and AM approach to assessing group capital as an alternative to the ICS.ICS developed by the IAIS. The development and adoption of these capital standards could increase our prescribed capital requirement, the level at which regulatory scrutiny intensifies, as well as significantly increase our cost of regulatory compliance.

We are a holding company and are dependent upon dividends, loans and other sources of cash from our subsidiaries in order to meet our obligations. Ordinary dividend payments, or dividends that do not require prior approval by the insurance subsidiaries' domiciliary insurance regulator, are generally limited to amounts determined by formulas that vary by jurisdiction. If we are restricted from paying or receiving intercompany dividends, by regulatory rule or otherwise, we may not be able to fund our corporate obligations and debt service requirements or pay our stockholders dividends from available cash. As a result, we would need to pursue other sources of capital which may be more expensive or may not be available at all.

Ratings are an important factor in establishing the competitive position of insurance companies. Our insurance company subsidiaries, as well as our public debt, are rated by rating agencies, including, A.M. Best Company (A.M. Best), Moody's Investors Service, Inc. (Moody's), Standard & Poor's (S&P) and Fitch Ratings, Inc. (Fitch). Ratings reflect the rating agency's opinions of an insurance company's or insurance holding company's

financial strength, capital adequacy, enterprise risk management practices, operating performance, strategic position and ability to meet its obligations to policyholders and debt holders.holders, and may also reflect opinions on other areas such as information security and climate risk, as well as ESG matters more broadly.

The rating agencies may take action to lower our ratings in the future as a result of any significant financial loss or changes in the methodology or criteria applied by the rating agencies. The severity of the impact on our business is dependent on the level of downgrade and, for certain products, which rating agency takes the rating action. Among the adverse effects in the event of such downgrades would be the inability to obtain a material volume of business from certain major insurance brokers, the inability to sell a material volume of our insurance products to certain markets and the required collateralization of certain future payment obligations or reserves. Further, if one or more of our corporate debt ratings were downgraded, we may find it more difficult to access the capital markets and we may incur higher borrowing costs.

In addition, it is possible that a significant lowering of the corporate debt ratings of Loews by certain of the rating agencies could result in an adverse effect on our ratings, independent of any change in our circumstances.

For further discussion of our ratings, see the Ratings subsection within the Liquidity and Capital Resources section of MD&A in Item 7.

The insurance industry is subject to comprehensive and detailed regulation and supervision. Most insurance regulations are designed to protect the interests of our policyholders and third-party claimants, rather than our investors. Each jurisdiction in which we do business has established supervisory agencies that regulate the manner in which we do business. Any changes in regulation could impose significant burdens on us. In addition, the Lloyd's marketplace sets rules under which its members, including our Hardy syndicate, operate.

These rules and regulations relate to, among other things, the standards of solvency (including risk-based capital measures), government-supported backstops for certain catastrophic events (including terrorism), investment restrictions, accounting and reporting methodology, establishment of reserves and potential assessments of funds to settle covered claims against impaired, insolvent or failed private or quasi-governmental insurers. In addition, rules and regulations have recently been introduced, or are being considered, in the areas of information security and ESG, which may also affect our business. We also are subject to numerous regulations governing the protection of personal and confidential information of our clients and employees, including medical records, credit card data and financial information. These laws and regulations, including regulations related to cybersecurity protocols (which continue to evolve in breadth, sophistication and maturity in response to an ever-evolving threat landscape), are increasing in complexity and number, change frequently, sometimes conflict, and could expose us to significant monetary damages, regulatory enforcement actions, fines and/or criminal prosecution in one or more jurisdictions. In response to climate change, regulators at the federal, state and international level also could impose new regulations requiring disclosure of underwriting or investment in certain industry sectors.

Regulatory powers also extend to premium rate regulations which require that rates not be excessive, inadequate or unfairly discriminatory. State jurisdictions ensure compliance with such regulations through market conduct exams, which may result in losses to the extent non-compliance is ascertained, either as a result of failure to document transactions properly or failure to comply with internal guidelines, or otherwise. The jurisdictions in which we do business may also require us to provide coverage to persons whom we would not otherwise consider eligible or restrict us from withdrawing from unprofitable lines of business or unprofitable market areas. Each jurisdiction dictates the types of insurance and the level of coverage that must be provided to such involuntary risks. Our share of these involuntary risks is mandatory and generally a function of our respective share of the voluntary market by line of insurance in each jurisdiction.

None.

We lease our principal executive offices in Chicago, Illinois, as well as other property and casualty insurance offices throughout the U.S.  We also lease offices in Canada, the U.K., Belgium, Denmark, France, Germany, Italy, Luxembourg and the Netherlands, primarily for branch and insurance business operations in those locations.

We consider our properties to be in generally good condition well maintained and suitable and adequate to carry on our business.

Information on our legal proceedings is set forth in Note FG to the Consolidated Financial Statements included under Item 8.

Not applicable.

Our common stock is listed on the New York Stock Exchange and the Chicago Stock Exchange under the symbol CNA.

As of February 5, 2021,2, 2024, we had 271,391,603270,896,945 shares of common stock outstanding and approximately 89.6%92% of our outstanding common stock was owned by Loews. We had 866756 stockholders of record as of February 5, 20212, 2024 according to the records maintained by our transfer agent.

Our Board of Directors has approved an authorization to purchase, in the open market or through privately negotiated transactions, our outstanding common stock, as our management deems appropriate. No repurchases of our common stock were made in the three months ended December 31, 2020.2023.

The following graph compares the five-year total return of our common stock, the Standard & Poor's 500 (S&P 500) Index and the S&P 500 Property & Casualty Insurance Index. The graph assumes that the value of the investment in our common stock and each index was $100 at the base period, January 1, 2016,2019, and that dividends, if any, were reinvested in the stock or index.

The following discussion should be read in conjunction with Part I, Item 1A Risk Factors Item 6 Selected Financial Data and Part II, Item 8 Financial Statements and Supplementary Data of this Form 10-K.

The preparation of Consolidated Financial Statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and the amount of revenues and expenses reported during the period. Actual results may differ from those estimates.

Our Consolidated Financial Statements and accompanying notes have been prepared in accordance with GAAP applied on a consistent basis. We continually evaluate the accounting policies and estimates used to prepare the Consolidated Financial Statements. In general, our estimates are based on historical experience, evaluation of current trends, information from third-party professionals and various other assumptions that are believed to be reasonable under the known facts and circumstances.

The accounting estimates discussed below are considered by us to be critical to an understanding of our Consolidated Financial Statements as their application places the most significant demands on our judgment. Note A to the Consolidated Financial Statements included under Item 8 should be read in conjunction with this section to assist with obtaining an understanding of the underlying accounting policies related to these estimates. Due to the inherent uncertainties involved with these types of judgments, actual results could differ significantly from our estimates and may have a material adverse impact on our results of operations, financial condition, equity, business, and insurer financial strength and corporate debt ratings.

Exposure exists with respect to the collectibility of ceded property and casualty and life reinsurance to the extent that any reinsurer is unable to meet its obligations or disputes the liabilities we have ceded under reinsurance agreements. An allowance for uncollectible reinsurance is recorded on the basis of periodic evaluations of balances due from reinsurers, reinsurer financial strength rating and solvency, industry

Additionally, exposure exists with respect to the collectibility of amounts due from policyholders related to insurance contracts, including amounts due from insureds under high deductible policies and retrospectively rated policies. An allowance for uncollectible insurance receivables is recorded on the basis of periodic

evaluations of balances due from insureds, currently as well as in the future, historical business default data, management's experience and current and forecast economic conditions.

If actual experience differs from the estimates made by management in determining the allowances for uncollectible reinsurance and insurance receivables, net receivables as reflected on our Consolidated Balance Sheets may not be collected. Therefore, our results of operations, financial condition or equity could be materially adversely affected. Further information on our process for determining the allowances for uncollectible reinsurance and insurance receivables is in Note A to the Consolidated Financial Statements included under Item 8.

Our fixed maturity and equity securities are carried at fair value on the balance sheet. Fair value represents the price that would be received in a sale of an asset in an orderly transaction between market participants on the measurement date, the determination of which may require us to make a significant number of assumptions and judgments. Securities with the greatest level of subjectivity around valuation are those that rely on inputs that are significant to the estimated fair value and that are not observable in the market or cannot be derived principally from or corroborated by observable market data. These unobservable inputs are based on assumptions consistent with what we believe other market participants would use to price such securities. Further information on our fair value measurements is in Note C to the Consolidated Financial Statements included under Item 8.

Our fixed maturity securities are subject to market declines below amortized cost that may result in the recognition of impairment losses in earnings. Factors considered in the determination of whether or not an impairment loss is recognized in earnings include a current intention or need to sell the security or an indication that a credit loss exists. Significant judgment is required in the determination of whether a credit loss has occurred for a security. We consider all available evidence when determining whether a security requires a credit allowance to be recorded, including the financial condition and expected near-term and long-term prospects of the issuer, whether the issuer is current with interest and principal payments, credit ratings on the security or changes in ratings over time, general market conditions, industry, sector or other specific factors and whether we expect to receive cash flows sufficient to recover the entire amortized cost basis of the security.

Our mortgage loan portfolio is subject to the expected credit loss model, which requires immediate recognition of estimated credit losses over the life of the asset and the presentation of the asset at the net amount expected to be collected. Significant judgment is required in the determination of estimated credit losses and any changes in our expectation of the net amount to be collected are recognized in earnings.

Further information on our process for evaluating impairments and expected credit losses is in Note A to the Consolidated Financial Statements included under Item 8.

The level of claim reserves we maintain represents our best estimate, as of a particular point in time, of what the ultimate settlement and administration of claims will cost based on our assessment of facts and circumstances known at that time. Reserves are not an exact calculation of liability but instead are complex estimates that we derive, generally utilizing a variety of actuarial reserve estimation techniques, from numerous assumptions and expectations about future events, both internal and external, many of which are highly uncertain. As noted below, we review our reserves for each segment of our business periodically, and any such review could result in the need to increase reserves in amounts which could be material and could adversely affect our results of operations, financial condition, equity, business and insurer financial strength and corporate debt ratings. Further information on reserves is provided in Note E and F to the Consolidated Financial Statements included under Item 8.

As discussed in the Risk Factors discussion within Item 1A, there is a risk that our recorded reserves are insufficient to cover our estimated ultimate unpaid liability for claims and claim adjustment expenses. Given the unprecedented nature of the event, a particularly high level of uncertainty exists as to the potential impact on insurance losses related to the COVID-19 pandemic, mitigating actions and consequent economic crisis. Unforeseen emerging or potential claims and coverage issues are also difficult to predict and could materially adversely affect the adequacy of our claim and claim adjustment expense reserves and could lead to future reserve additions.increases.

In addition, our property and casualty insurance subsidiaries also have actual and potential exposures related to A&EP claims, which could result in material losses. To mitigate the risks posed by our exposure to A&EP claims and claim adjustment expenses, we completed a transaction with NICO under which substantially all of our legacy A&EP liabilities were ceded to NICO effective January 1, 2010. See Note E to the Consolidated Financial Statements included under Item 8 for further discussion about the transaction with NICO, its impact on our results of operations and the deferred retroactive reinsurance gaingains and the amount of remaining reinsurance limit.

Various methods are used to project ultimate losses for both long-tail and short-tail exposures.

For other more complex reserve groups where the above methods may not produce reliable indications, we use additional methods tailored to the characteristics of the specific situation.

The three areas for which we believe a significant deviation to our net reserves is reasonably possible are (i) professional liability, management liability and surety products; (ii) workers' compensation; and (iii) general liability.

Our Life & Group segment includes our run-off long termlong-term care business as well as structured settlement obligations not funded by annuities related to certain property and casualty claimants. Long termLong-term care policies may provide benefits for nursing homes, assisted living facilities and home health care subject to various daily and lifetime caps. Generally, policyholders must continue to make periodic premium payments to keep the policy in force and we have the ability to increase policy premiums, subject to state regulatory approval.

We maintain both claim and claim adjustment expense reserves as well as future policy benefit reserves for policyholder benefits for our Life & Group segment. Claim and claim adjustment expense reserves consist of estimatedlong-term care policies. Future policy benefit reserves for long termlong-term care policies relate to policyholders that are currently receiving benefits, including claims that have been incurred but are not yet reported.reported, as well as policyholders that are not yet receiving benefits. In developing the claim and claim adjustment expense reserve estimates for our long term care policies,future policy benefit reserves, our actuaries perform a detailed claim reserve review on an annual basis. During the annual review, historical policyholder morbidity, persistency (inclusive of mortality), anticipated future premium rate increases and expense experience is reviewed and compared to the current best estimate actuarial assumption set for potential revision. On a quarterly basis, our actuaries perform experience studies that monitor the appropriateness of best estimate actuarial assumptions against emerging experience to assess whether any updates to those assumptions are warranted. The review analyzesdetermination of these reserves requires management to make estimates and assumptions about expected policyholder experience over the sufficiencyremaining life of existing reservesthe policies. Since policies may be in force for policyholders currently on claim and includes an evaluation of expected benefit utilization and claim duration. several decades, these assumptions are subject to significant estimation risk.

In addition, claim and claim adjustment expense reserves are also maintained for theour structured settlement obligations. In developing the claim and claim adjustment expense reserve estimates for our structured settlement obligations, our actuaries monitor mortality and expense experience on an annual basis. Our recorded claim and claim adjustment expense reserves reflect management's best estimate after incorporating the results of the most recent reviews. Claim and claim adjustment expense reserves for long term care policies and structured settlement obligations are discounted as discussed in Note A to the Consolidated Financial Statements included under Item 8.

FutureThe actuarial assumptions related to future policy benefit reserves consist of the active life reserves related to our long termfor long-term care policies for policyholders that are not currently receiving benefits and represent the present value of expected future benefit payments and expenses less expected future premium. The determination of these reserves requires management to make estimates and assumptions about expected investment and policyholder experience over the life of the contract. Since many of these contracts may be in force for several decades, these assumptions are subject to significant estimation risk.

The table below summarizes the estimated pretax impact on our results of operations from various hypothetical revisions to our active lifeliability for future policyholder benefits (LFPB) reserve assumptions. The annual GPV process involves updating all assumptions to management's then current best estimate, and historically all significant assumptions have been revised each year. In the Hypothetical revisions table below, weWe have assumed that revisions to such assumptions would occur in each policy type, age and duration within each policy groupgroup. The impact of each sensitivity is discrete and would occur absent any changes,does not reflect the impact one factor may have on another or the mitigating or otherwise, in the other assumptions.impact from management actions, which may include additional future premium rate increases. Although such hypothetical revisions are not currently required or anticipated, we believe they could occur based on past variances in experience and our expectations of the ranges of future experience that could reasonably occur. Any actual adjustment would be dependent on the specific policies affected and, therefore, may differ from the estimates summarized below. The estimated impacts to results of operations in the table below are after consideration of any net premium ratio impacts.

Various events can cause catastrophe losses. These events can be natural or man-made, including hurricanes, tornadoes, windstorms, earthquakes, hail, severe winter weather, fires, floods, riots, strikes, civil unrest, cyber attacks,cyber-attacks, pandemics and acts of terrorism that produce unusually large aggregate losses. In most, but not all cases, our catastrophe losses from these events in the U.S.United States of America (U.S.) are defined consistent with the definition of the Property Claims Service (PCS). PCS defines a catastrophe as an event that causes damage of $25 million or more in direct insured losses to property and affects a significant number of policyholders and insurers. For events outside of the U.S., we define a catastrophe as an industry recognized event that generates an accumulation of claims amounting to more than $1 million for the International segment.

Catastrophes are an inherent risk of the property and casualty insurance business and have contributed to material period-to-period fluctuations in our results of operations and/or equity. We reported catastrophe losses, net of reinsurance, of $550$236 million and $179$247 million for the years ended December 31, 20202023 and 2019. Net catastrophe2022. Catastrophe losses for the yearyears ended December 31, 2020 included $294 million related primarily to2023 and 2022 were driven by severe weather related events, $195 million relatedprimarily Winter Storm Elliott and Hurricane Ian for 2022.

We use various analyses and methods, including using one of the industry standard natural catastrophe models, to the COVID-19 pandemicestimate hurricane and $61 million relatedearthquake losses at various return periods and to civil unrest. Net catastrophe losses for the year ended December 31, 2019 related primarilyinform underwriting and reinsurance decisions designed to U.S. weather relatedmanage our exposure to catastrophic events.

The following discussion summarizes our most significant catastrophe reinsurance coverage at January 1, 2021.2024.

We purchased corporate catastrophe excess-of-loss treaty reinsurance covering our U.S. states and territories and Canadian property exposures underwritten in our North American and European companies. Exposures underwritten through Hardy are excluded.excluded and covered under a separate treaty. The treaty has a term of MayJune 1, 20202023 to MayJune 1, 20212024 and provides coverage for the accumulation of covered losses from catastrophe occurrences above our per occurrence retention of $250$235 million up to $1.1 billion for all losses other than earthquakes. Earthquakes are covered up to $1.2 billion. Losses stemming from terrorism events are covered unless they are due to a nuclear, biological or chemical attack. All layers of the treaty provide for one full reinstatement.

We also purchased corporate Workers' Compensation catastrophe excess-of-loss treaty reinsurance for the period January 1, 20212024 to January 1, 20222025 providing $275 million of coverage for the accumulation of covered losses related to natural catastrophes above our per occurrence retention of $25 million. The treaty also provides $475$775 million of coverage for the accumulation of covered losses related to terrorism events above our per occurrence retention of $25 million. Of this $475the $775 million in Terrorismterrorism coverage, $200 million is provided for nuclear, biological chemical and radiation events. One full reinstatement is available for the first $275 million above the retention, regardless of the covered peril. We also purchased a targeted facultative facility to address exposure accumulations in specific peak Terrorism zones.

Our principal reinsurance protection against large-scale terrorist attacks, including nuclear, biological, chemical or radiological attacks, is the coverage currently provided through TRIPRA which runs through the end of 2027. TRIPRA provides a U.S. government backstop for insurance-related losses resulting from any “act of terrorism”,terrorism,” which is certified by the Secretary of Treasury in consultation with the Secretary of Homeland Security for losses that exceed a threshold of $200 million industry-wide for the calendar year 2021.2024. Under the current provisions of the program, in 2021,2024, the federal government will reimburse 80% of our covered losses in excess of our applicable deductible up to a total industry program cap of $100 billion. Our deductible is based

on eligible commercial property and casualty earned premiums for the preceding calendar year. Based on 20202023 earned premiums, our estimated deductible under the program is $820 million$1.1 billion for 2021.2024. If an act of terrorism or acts of terrorism result in covered losses exceeding the $100 billion annual industry aggregate limit, Congress would be responsible for determining how additional losses in excess of $100 billion will be paid.

Specialty provides management and professional liability and other coverages through property and casualty products and services using a network of brokers, independent agencies and managing general underwriters. Specialty includes the following business groups:

The following table details the results of operations for Specialty.

Gross written premiums, excluding third partythird-party captives, for Specialty increased $281decreased $14 million in 20202023 as compared with 20192022 driven by lower new business partially offset by strong rate and higher new business.retention. Net written premiums for Specialty increased $192$23 million in 20202023 as compared with 2019.2022. The increase in net earned premiums was consistent with the trend in net written premiums.

Core income decreased $136increased $40 million in 20202023 as compared with 20192022 primarily due to higher net catastrophe losses and lower net investment income partially offset by improved non-catastrophe current accidentlower favorable net prior year loss reserve development, lower underlying underwriting results.results and lower income from non-insurance warranty business.

Favorable net prior year loss reserve development of $61$14 million and $92$40 million was recorded in 20202023 and 2019.2022. Further information on net prior year loss reserve development is in Note E to the Consolidated Financial Statements included under Item 8.

The following table summarizes the gross and net carried reserves for Specialty.

Commercial works with a network of brokers and independent agents to market a broad range of property and casualty insurance products to all types of insureds targeting small business, construction, middle markets and other commercial customers. Property products include standard and excess property, marine and boiler and machinery coverages. Casualty products include standard casualty insurance products such as workers' compensation, general and product liability, commercial auto, umbrella, and umbrellaexcess and surplus coverages. Most insurance programs are provided on a guaranteed cost basis; however, we also offer specialized loss-sensitive insurance programs and total risk management services relating to claim and information services to the large commercial insurance marketplace.

The following table details the results of operations for Commercial.

Gross written premiums for Commercial increased $393$950 million in 20202023 as compared with 20192022 driven by strong rate and higher new business.business and rate. Net written premiums for Commercial increased $250$687 million in 20202023 as compared with 2019.2022. The increase in net earned premiums was consistent with the trend in net written premiums partially offset by a reduction in estimated audit premiums as a result of the economic slowdown arising from COVID-19 and premium rate adjustments impacting certain general liability policies. Further information on the general liability premium rate adjustments is provided in Note F to the Consolidated Financial Statements included under Item 8.premiums.

Core income decreased $228increased $186 million in 20202023 as compared with 2019, primarily due to2022, driven by higher net catastrophe losses, lower net investment income and unfavorableimproved current accident year underwriting results partially offset by lower favorable net prior year loss reserve development in the current year, including a $50 million charge for mass tort exposures primarily due to New York reviver statute-related claims. These results were partially offset by improved non-catastrophe current accident year underwriting results.development.

The following table summarizes the gross and net carried reserves for Commercial.

The International segment underwrites property and casualty coverages on a global basis through a branch operation in Canada, a European business consisting of two insurance companies based in the U.K. and Luxembourg and Hardy, our Lloyd's syndicate.

The following table details the results of operations for International.

Gross written premiums for International increased $22$91 million in 20202023 as compared with 20192022. Excluding the effect of foreign currency exchange rates, gross written premiums increased $102 million driven by growth in Europe and Canada partially offset by the impact of the strategic exit from certain Lloyd’s business classes.favorable renewal premium change. Net written premiums for International decreased $10increased $73 million in 20202023 as compared with 2019.2022. Excluding the effect of foreign currency exchange rates, net written premiums increased $74 million as compared with 2022. The decreaseincrease in net earned premiums was consistent with the trend in net written premiums.

Core income increased $8$39 million in 20202023 as compared with 2019.2022 driven by higher net investment income, improved underlying underwriting results and a favorable impact from changes in foreign currency exchange rates, partially offset by unfavorable net prior year loss reserve development.

The combined ratio of 102.4%92.6% increased 0.60.8 points in 20202023 as compared with 20192022 due to a 2.81.9 point increase in the loss ratio partially offset by a 2.21.1 point improvement in the expense ratio. The increase in the loss ratio was driven by higherunfavorable net catastrophe losses partially offset byprior year loss reserve development of $13 million recorded for 2023 compared to favorable net prior year loss reserve development in the current year. Net catastropheof $13 million recorded for 2022. Catastrophe losses were $67$29 million, or 7.12.5 points of the loss ratio, for 2020,2023, as compared with $10$23 million, or 1.12.2 points of the loss ratio, for 2019. Net catastrophe losses in 2020 included $38 million related to the COVID-19 pandemic, $26 million related primarily to severe weather related events

Favorable net prior year loss reserve development of $2 million was recorded in 2020 as compared with unfavorable net prior year loss reserve development of $21 million in 2019. Further information on net prior year loss reserve development is in Note E to the Consolidated Financial Statements included under Item 8.

The Life & Group segment includes our run-off long termlong-term care business as well as structured settlement obligations not funded by annuities related to certain property and casualty claimants. Long termLong-term care policies were sold on both an individual and group basis.

The following table summarizes the results of operations for Life & Group.

Corporate & Other primarily includes certain corporate expenses, including interest on corporate debt and the results of certain property and casualty business in run-off, including CNA Re, A&EP, a legacy portfolio of EWC policies and A&EP.certain legacy mass tort reserves.

The following table summarizes the results of operations for the Corporate & Other segment, including intersegment eliminations.

Core loss decreased $10 million for 2023 as compared with 2022. The current year includes higher net investment income, a $19 million after-tax charge related to office consolidation, and a $56 million after-tax charge related to unfavorable prior period development for legacy mass tort claims compared with a $51 million after-tax charge for legacy mass tort claims in 2020 was generally consistent with 2019the prior year. The charge related to office consolidation is further discussed in Note M and net prior year loss reserve development is driven by interest expense on corporate debt.further discussed in Note E, to the Consolidated Financial Statements included under Item 8.

The application of retroactive reinsurance accounting to additional cessions to the A&EP Loss Portfolio Transfer (LPT) in both periodsLPT resulted in an after-tax chargesbenefit of $5$6 million and $14$3 million in 20202023 and 2019, respectively,2022, both of which have no economic impact. The A&EP LPT is further discussed in Note E to the Consolidated Financial Statements included under Item 8.

The following table summarizes the gross and net carried reserves for Corporate & Other.

The significant components of Net investment income are presented in the following table. Fixed income securities, as presented, include both fixed maturity securities and non-redeemable preferred stock.

The components of Net investment (losses) gains (losses) are presented in the following table.