Marsh & Mclennan Companies, Inc,
Fiscal Year 2024.

Operating income margin28.4 %28.0 %24.4 % Revenue Revenue in the Risk and Insurance Services segment increased $1.3 billion, or 9%, to $15.4 billion in 2024, compared to $14.1 billion in 2023. Revenue increased 8% on an underlying basis and 2% from acquisitions, partially offset by a decrease of 1% from the impact of foreign currency translation. Interest earned on fiduciary funds increased $44 million to $497 million in 2024, compared to $453 million in 2023, due to higher average interest rates compared to the prior year. In Risk and Insurance Services, underlying revenue growth in 2024 was driven by strong retention and new business growth at Marsh and Guy Carpenter. Results also benefited from continued economic growth in most major markets and inflation. Marsh's revenue increased $1.2 billion, or 10%, to $12.5 billion in 2024, compared to $11.4 billion in 2023. This reflects an increase of 7% on an underlying basis and 3% from acquisitions, partially offset by a decrease of 1% from the impact of foreign currency translation. U.S./Canada rose 7% on an underlying basis. Total International produced underlying revenue growth of 8%, reflecting growth of 10% in Latin America, 8% in EMEA and 6% in Asia Pacific. Guy Carpenter's revenue increased $104 million, or 5%, to $2.4 billion in 2024, compared to $2.3 billion in 2023. This reflects an increase of 8% on an underlying basis, partially offset by a decrease of 3% from acquisitions. At Guy Carpenter, underlying revenue growth in 2024 was driven by growth across all regions and global specialties. Revenue in 2023 includes a gain from a legal settlement with a competitor for $58 million, excluding legal fees of approximately $10 million. Risk and Insurance Services segment completed 10 acquisitions in 2024. Information regarding these acquisitions is included in Note 5, Acquisitions and Dispositions, in the notes to the consolidated financial statements.

Debt The Company has a short-term debt financing program through the issuance of commercial paper. The proceeds from the issuance of commercial paper are used for general corporate purposes. In November 2023, the Company increased its short-term commercial paper financing program (the "Program") to $3.5 billion from $2.8 billion. The Company did not have any commercial paper outstanding at December 31, 2024 and 2023.

Investing Cash Flows Net cash used for investing activities amounted to $8.8 billion in 2024, compared with $1.4 billion used for investing activities in 2023. The Company paid $8.5 billion and $976 million, net of cash, cash equivalents and cash and cash equivalents held in a fiduciary capacity acquired, for acquisitions in 2024 and 2023, respectively. The outflow of funds in 2024 related primarily to the acquisition of McGriff, where the Company paid $7.0 billion in cash consideration. The remaining outflow of funds in 2024 related primarily to the acquisitions of Cardano, the Horton Group, and Fisher Brown Bottrell Insurance Inc., for $466 million, $384 million and $321 million, respectively. The outflow of funds in 2023 related primarily to the acquisitions of Honan Insurance Group, Graham Company and Westpac for $358 million, $307 million, and $232 million, respectively. In 2024, the Company received cash proceeds from dispositions of $135 million, partially offset by $46 million primarily related to cash and cash equivalents held in fiduciary capacity in the disposed businesses. The Company sold its Mercer U.K. pension administration and U.S. health and benefits administration businesses on January 1, 2024, for approximately $120 million, comprised of cash proceeds of $30 million and deferred consideration of $90 million. The Company received $78 million of deferred consideration in 2024. In connection with the disposition of Mercer's U.S. affinity business in 2022, the Company transferred to the buyer an additional $24 million of cash and cash equivalents held in a fiduciary capacity in 2023. The Company's additions to fixed assets and capitalized software, which amounted to $316 million in 2024 and $416 million in 2023, related primarily to software development costs, the refurbishing and modernizing of office facilities, and technology equipment purchases. Cash used for long-term investments in 2024 is primarily due to an investment in a unit trust fund. At December 31, 2024, the Company has commitments for potential future investments of approximately $117 million in private equity funds that invest primarily in financial services companies.

Consolidated Revenue Consolidated revenue increased $2.0 billion, or 10%, to $22.7 billion in 2023, compared to $20.7 billion in 2022. Consolidated revenue increased 9% on an underlying basis and 1% from acquisitions. On an underlying basis, revenue increased 11% and 7% in 2023, in the Risk and Insurance Services and Consulting segments, respectively. Underlying revenue growth in the Risk and Insurance Services and Consulting segments in 2023 reflect the continued demand for our advice and solutions. In Risk and Insurance Services, the increase in underlying revenue was primarily due to growth in new business and renewals. Results also benefited from growth in the global economy, inflation, higher insurance and reinsurance pricing, and an increase in fiduciary income due to higher interest rates. In Consulting, revenue growth reflects continued demand for our health, wealth, and career solutions and products, and consulting services.

Restructuring activities In the fourth quarter of 2022, the Company initiated activities focused on workforce actions, rationalization of technology and functional services, and reductions in real estate. The Company anticipates total charges related to these activities to be approximately $475 million. Through December 31, 2023, the Company has incurred $441 million of these restructuring costs, primarily related to severance and lease exit charges, of which $222 million were incurred in 2023. Any remaining costs are expected to be incurred by the end of 2024. Related estimated savings are expected to be approximately $400 million, with $230 million realized in 2023. The majority of the remaining savings are expected to be realized in 2024. The Company continues to refine its detailed plans for each business and location, which may change the expected timing, estimates of expected costs and related savings. Restructuring activities also reflect JLT integration and restructuring costs in 2023 of $31 million, compared to $115 million in 2022, primarily related to lease exit charges for a legacy JLT U.K. location. For additional details, refer to Note 14, Restructuring Costs, in the notes to the consolidated financial statements.

In October 2023, the Company repaid $250 million of 4.05% senior notes that matured. In September 2023, the Company issued $600 million of 5.400% senior notes due 2033 and $1 billion of 5.700% senior notes due 2053. In March 2023, the Company issued $600 million of 5.450% senior notes due 2053. The Company used the net proceeds from these issuances for general corporate purposes. In October 2022, the Company issued $500 million of 5.75% senior notes due 2032 and $500 million of 6.25% senior notes due 2052. The Company used the net proceeds from these issuances for general corporate purposes, and repaid $350 million of 3.30% senior notes in November 2022, with an original maturity date of March 2023. The Company's senior debt is currently rated A- by Standard & Poor's ("S&P"), A3 by Moody's, and A- by Fitch. The Company's short-term debt is currently rated A-2 by S&P, P-2 by Moody's, and F-2 by Fitch. The Company carries a Stable outlook with S&P, Moody's and Fitch.

Share Repurchases In 2023, the Company repurchased 6.4 million shares of its common stock for $1.15 billion. At December 31, 2023, the Company remained authorized to repurchase up to approximately $3.2 billion in shares of its common stock. There is no time limit on this authorization. In 2022, the Company repurchased 12.2 million shares of its common stock for $1.9 billion. In March 2022, the Board of Directors of the Company authorized an additional $5 billion in share repurchases. This was in addition to the Company's existing share repurchase program, which had approximately $1.3 billion of remaining authorization at December 31, 2021.

Fair Value Determinations Goodwill Impairment Testing - The Company is required to assess goodwill and any indefinite-lived intangible assets for impairment annually, or more frequently if circumstances indicate impairment may have occurred. The Company performs the annual impairment assessment for each of its reporting units during the third quarter of each year. The reporting unit level is defined as the same level as the Company's operating segments. In accordance with applicable accounting guidance, a company can assess qualitative factors to determine whether it is necessary to perform a quantitative goodwill impairment test. Alternatively, the Company may elect to proceed directly to the quantitative goodwill impairment test. In 2023, the Company performed a quantitative impairment assessment. Fair values for the reporting units were estimated using both an income and market valuation approach. Carrying values were based on balances at June 30, 2023 and included directly identified assets and liabilities, as well as an allocation of those assets and liabilities not recorded at the reporting unit level. 53 The Company completed its 2023 annual review in the third quarter and concluded that goodwill was not impaired, as the fair value of each reporting unit exceeded the carrying value.

Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations. General Marsh McLennan Companies Inc., and its consolidated subsidiaries (Marsh McLennan or the "Company") a global professional services firm in the areas of risk, strategy and people. The Company helps clients build the confidence to thrive through the power of perspective of our four market-leading businesses. With annual revenue of over $24 billion, the Company has more than 90,000 colleagues advising clients in over 130 countries. Marsh provides data-driven risk advisory services and insurance solutions to commercial and consumer clients. Guy Carpenter develops advanced risk, reinsurance and capital strategies that help clients grow profitably and pursue emerging opportunities. Mercer delivers advice and technology-driven solutions that help organizations redefine the world of work, reshape retirement and investment outcomes, and unlock health and well-being for a changing workforce. Oliver Wyman Group serves as a critical strategic, economic and brand advisor to private sector and governmental clients. The four businesses also collaborate together to deliver new solutions to help clients manage complex and interconnected risks.

The Company conducts business through two segments: •Risk and Insurance Services includes risk management activities (risk advice, risk transfer and risk control and mitigation solutions) as well as insurance and reinsurance broking and services. The Company conducts business in this segment through Marsh and Guy Carpenter. •Consulting includes health, wealth and career advice, solutions and products, and specialized management, strategic, economic and brand consulting services. The Company conducts business in this segment through Mercer and Oliver Wyman Group. The results of operations in the Management Discussion & Analysis ("MD&A") include an overview of the Company's consolidated results for fiscal year 2024, compared to the results for fiscal year 2023, and should be read in conjunction with the consolidated financial statements and notes. This section also includes a discussion of the key drivers impacting the Company's financial results of operations both on a consolidated basis and by reportable segments. We describe the primary sources of revenue and categories of expense for each reportable segment in the discussion of segment financial results. A reconciliation of segment operating income to total operating income is included in Note 17, Segment Information, in the notes to the consolidated financial statements included in Part II, Item 8, of this report. For information and comparability of the Company's results of operations and liquidity and capital resources for fiscal year 2022, refer to "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of the Company's Form 10-K for the fiscal year ended December 31, 2023. This MD&A contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Refer to "Information Concerning Forward-Looking Statements" at the outset of this report.

Net income per share attributable to the Company - Basic$8.26 $7.60 $6.11 - Diluted$8.18 $7.53 $6.04 Average number of shares outstanding: - Basic492 494 499

The following tables present the Company's non-GAAP revenue for the years ended December 31, 2024 and 2023 and the related non-GAAP underlying revenue change: Year Ended December 31,

Total Consulting9,133 8,709 5 %8,923 8,458 6 % Corporate Eliminations(70)(62)(70)(62) Total Revenue$24,458 $22,736 8 %$23,935 $22,412 7 % The following table provides more detailed revenue information for certain of the components presented in the previous table: Year Ended December 31,

Total Revenue$24,458 $113 $(636)$23,935 $22,736 $(324)$22,412 The following table provides more detailed revenue information for certain of the components presented in the previous table:

The results of operations for the Risk and Insurance Services segment are as follows: (In millions, except percentages)202420232022 Revenue$15,395$14,089$12,645

The results of operations for the Consulting segment are as follows: (In millions, except percentages)202420232022 Revenue$9,133$8,709$8,139 Compensation and benefits 5,3585,2494,827

Investment Income The caption "Investment income" in the consolidated statements of income comprises realized and unrealized gains and losses from investments. It includes, when applicable, other than temporary declines in the value of securities, mark-to-market increases or decreases in equity investments with readily determinable fair values and equity method gains or losses on its investments in private equity funds. The Company's investments may include direct investments in insurance, consulting or other strategically linked companies and investments in private equity funds. The Company recorded net investment income of $12 million in 2024, compared to $5 million in 2023. The increase in 2024 is primarily driven by higher mark-to-market gains from the Company's investments compared to the prior year.

Income and Other Taxes The Company's consolidated effective tax rate for 2024 and 2023 was 24.9% and 24.3%, respectively. The tax rates in both years reflect the impact of discrete tax matters such as excess tax benefits related to share-based compensation, enacted tax legislation, changes in uncertain tax positions, deferred tax adjustments, non-taxable adjustments related to contingent consideration for acquisitions, return to provision adjustments, and valuation allowances for certain tax credits. The 2024 effective tax rate reflects the full impact of the previously enacted change in the U.K. corporate income tax rate from 19% to 25%, which was effective April 1, 2023. The blended U.K. statutory tax rate for 2023 was 23.5%. In 2023, the Company released valuation allowances related to its non-U.S. operations. Management determined that there was sufficient positive evidence to conclude that it was more likely than not that deferred tax assets were realizable, primarily due to the sustained profitability of its operations. The release of valuation allowances resulted in a decrease to tax expense of $94 million in 2023. The effective tax rate may vary significantly from period to period. The effective tax rate is sensitive to the geographic mix of earnings and the cost to repatriate the Company's earnings, which may result in higher or lower effective tax rates. Therefore, a shift in the mix of profits among jurisdictions, or changes in the Company's repatriation strategy to access offshore cash, can affect the effective tax rate. In 2024, pre-tax income in the U.K., Canada, Ireland, India, Bermuda, Germany, Australia, United Arab Emirates, Japan, and Singapore accounted for 46 approximately 65% of the Company's total non-U.S. pre-tax income, with effective rates in those countries of 25.0%, 28.0%, 16.3%, 27.9%, 0.0%, 30.9%, 36.7%, 17.6%, 38.2%, and 18.0%, respectively. In addition, losses in certain jurisdictions cannot be offset by earnings from other operations and may require valuation allowances that affect the rate in a particular period, depending on estimates of the value of associated deferred tax assets which can be realized. A valuation allowance was recorded to reduce deferred tax assets to the amount that the Company believes is more likely than not to be realized. Details are provided in Note 7, Income Taxes, in the notes to the consolidated financial statements. The effective tax rate is also sensitive to changes in unrecognized tax benefits, including the impact of settled tax audits and expired statutes of limitations. The Company has established liabilities for uncertain tax positions in relation to potential assessments in the jurisdictions in which it operates. In the third quarter of 2024, the Company received closure notices and assessments from the U.K. tax authority in relation to its 2016-2020 examinations which disallowed certain interest expense deductions. The Company has appealed the assessments and resolving this matter through litigation or alternative dispute resolution may take several years. The Company believes the resolution of tax matters will not have a material effect on the consolidated financial position of the Company. However, an adverse resolution of tax matters from current or future audits or tax litigation could have a material impact on the Company's net income or cash flows and on its effective tax rate in a particular future period. Changes in tax laws, rulings, policies, or related legal and regulatory interpretations occur frequently and may have significant favorable or adverse impacts on our effective tax rate. In 2021, the Organization for Economic Cooperation and Development's ("OECD") released model rules for a 15% global minimum tax, known as Pillar Two. Pillar Two has now been enacted by most key non-U.S. jurisdictions where the Company operates, including the U.K. and Ireland. This minimum tax is treated as a period cost beginning in 2024 and does not have a material impact on the Company's financial results of operations for the current period. The Company continues to monitor legislative developments, as well as additional guidance from countries that have enacted Pillar Two legislation and will ensure it complies with any changes. As a U.S.-domiciled parent holding company, the Company is the issuer of essentially all of the Company's external indebtedness, and incurs the related interest expense in the U.S. The Company's interest expense deductions are not currently limited. Further, most senior executive and oversight functions are conducted in the U.S. and the associated costs are incurred primarily in the U.S. Some of these expenses may not be deductible in the U.S., which may impact the effective tax rate. Changes to the U.S. tax law in recent years have allowed the Company to repatriate foreign earnings without incurring additional U.S. federal income tax costs as foreign income is generally already taxed in the U.S. However, permanent reinvestment continues to be a component of the Company's global capital strategy. The Company continues to evaluate its global investment and repatriation strategy considering its capital requirements and potential costs of repatriation, which are generally limited to local country withholding taxes. 47

Liquidity and Capital Resources The Company is organized as a legal entity separate and distinct from its operating subsidiaries. As the Company does not have significant operations of its own, the Company is dependent upon dividends and other payments from its operating subsidiaries to pay principal and interest on its outstanding debt obligations, pay dividends to shareholders, repurchase its shares and pay corporate expenses. The Company can also provide financial support to its operating subsidiaries for acquisitions, investments and certain parts of their business that require liquidity, such as the capital markets business of Guy Carpenter. Other sources of liquidity include borrowing facilities discussed below in the Financing Cash Flows section. The Company derives a significant portion of its revenue and operating profit from operating subsidiaries located outside of the U.S. Funds from those operating subsidiaries are regularly repatriated to the U.S. out of annual earnings. At December 31, 2024, the Company had approximately $1.4 billion of cash and cash equivalents in its foreign operations, which includes $428 million of operating funds required to be maintained for regulatory requirements or as collateral under certain captive insurance arrangements. The Company expects to continue its practice of repatriating available funds from its non-U.S. operating subsidiaries out of current annual earnings. Where appropriate, a portion of the current year earnings will continue to be permanently reinvested. In 2024, the Company recorded foreign currency translation adjustments which decreased net equity by $569 million. Continued strengthening of the U.S. dollar against foreign currencies would further decrease the translated U.S. dollar value of the Company's net investments in its non-U.S. subsidiaries, as well as the translated U.S. dollar value of cash repatriations from those subsidiaries. Cash and cash equivalents on our consolidated balance sheets includes funds available for general corporate purposes. Fiduciary assets are shown separately in the consolidated balance sheets as cash and cash equivalents held in a fiduciary capacity, with a corresponding amount in current liabilities. Fiduciary assets cannot be used for general corporate purposes and should not be considered as a source of liquidity for the Company.

Operating Cash Flows The Company provided $4.3 billion of cash from operations both in 2024 and in 2023. These amounts reflect the net income of the Company during those periods, excluding gains or losses from investments, adjusted for non-cash charges, and changes in working capital which relate primarily to the timing of payments of accrued liabilities, including incentive compensation, or receipts of receivables and pension contributions. The Company used cash of $270 million and $271 million related to its restructuring activities in 2024 and 2023, respectively.

Pension Related Items Contributions The Company's policy for funding its tax-qualified defined benefit plans is to contribute amounts at least sufficient to meet the funding requirements set forth in accordance with applicable law. In 2024, the Company contributed $34 million to its U.S. defined benefit pension plans and $59 million to its non-U.S. defined benefit pension plans. In 2023, the Company contributed $33 million to its U.S. defined benefit pension plans and $78 million to its non-U.S. defined benefit pension plans. In the U.S., contributions to the tax-qualified defined benefit plans are based on Employee Retirement Income Security Act ("ERISA") guidelines and the Company generally expects to maintain a funded status of 80% or more of the liability determined in accordance with the ERISA guidelines. In 2024, the Company made contributions of $32 million to its non-qualified plans and expects to contribute approximately $35 million in 2025. The Company also made required contributions of $2 million to its U.S. qualified plans in 2024. In 2025, the Company is expected to be required to make contributions totaling $2 million to its U.S. qualified plans. Outside the U.S., the Company has a large number of non-U.S. defined benefit pension plans, the largest of which are in the U.K., which comprise approximately 78% of non-U.S. plan assets at December 31, 2024. Contribution rates for non-U.S. plans are generally based on local funding practices and statutory requirements, which may differ significantly from measurements in accordance with U.S. GAAP. In the U.K., the assumptions used to determine pension contributions are the result of legally prescribed negotiations between the Company and the plans' trustee that typically occur every three years in conjunction with the actuarial valuation of the plans. Currently, this results in a lower funded status compared to U.S. GAAP and may result in contributions irrespective of the U.S. GAAP funded status. 48 In 2021, the JLT Pension Scheme was merged into the MMC U.K. Pension Fund with a new segregated JLT section created (referred to as the "JLT section"). The Company contributed $21 million to its U.K. plans, including the JLT section, in 2024. The Company's contributions to its U.K. plans, including the JLT section, for 2025 are expected to be approximately $1 million. The Company made deficit contributions of $20 million to the JLT section in 2024 and is not required to make any deficit contributions to the JLT section in 2025. For the MMC U.K. Pension Fund, excluding the JLT section, an agreement was reached with the trustee in the fourth quarter of 2022, based on the surplus funding position at December 31, 2021. In accordance with the agreement, no deficit funding is at the earliest required until 2026. The funding level will be re-assessed during 2025 as part of the December 31, 2024 actuarial valuation to determine if contributions are required in 2026. In December 2022, the Company renewed its agreement to support annual deficit contributions that may be required by the U.K. operating companies under certain circumstances, up to £450 million (or $566 million) over a seven-year period. This is part of an agreement which gives the Company greater influence over asset allocation and overall investment decisions. The Company expects to contribute approximately $43 million to its non-U.S. defined benefit plans in 2025, comprising approximately of $1 million to the U.K. plans and $42 million to plans outside of the U.K.

Changes in Funded Status and Expense The year-over-year change in the funded status of the Company's pension plans is impacted by the difference between actual and assumed results, particularly with regard to return on assets, and changes in the discount rate, as well as the amount of Company contributions, if any. Unrecognized actuarial losses as of December 31, 2024, were approximately $1.4 billion and $3.5 billion for the U.S. plans and non-U.S. plans, respectively, compared with losses of $1.3 billion and $3.2 billion at December 31, 2023. The increase in the U.S. is primarily due to lower than expected returns on plan assets. The increase in the non-U.S. plans is primarily due to lower than expected returns on plan assets partly offset by increases in the discount rates used to measure plan liabilities and the impact of foreign exchange. In the past several years, the amount of unamortized losses has been significantly impacted, both positively and negatively, by actual asset performance and changes in discount rates. The discount rate used to measure plan liabilities for the Company's U.S. and U.K. plans increased in 2024, decreased in 2023 and increased in 2022. An increase in the discount rate decreases the measured plan benefit obligation, resulting in actuarial gains, while a decrease in the discount rate increases the measured plan obligation, resulting in actuarial losses. In 2024, the Company's defined benefit pension plan assets had gains of 2.2% and losses of 5.0% in the U.S. and U.K., respectively, as compared to gains of 9.3% and 4.1% in the U.S. and U.K., respectively, in 2023. Overall, based on the measurement at December 31, 2024, net benefit credits related to the Company's defined benefit pension plans are expected to be lower by $69 million in 2025, compared to 2024. The decrease is primarily due to lower expected return on assets and higher recognized actuarial loss. The Company's accounting policies for its defined benefit pension plans, including the selection of and sensitivity to assumptions, are discussed in Management's Discussion of Critical Accounting Estimates. For additional information regarding the Company's retirement plans, refer to Note 1, Summary of Significant Accounting Policies, and Note 8, Retirement Benefits, in the notes to the consolidated financial statements.

Financing Cash Flows Net cash provided by financing activities was $4.5 billion in 2024, compared with $1.1 billion used by financing activities in 2023.

Credit Facilities In October 2023, the Company increased its multi-currency unsecured five-year revolving credit facility (the "Credit Facility") capacity to $3.5 billion from $2.8 billion and extended the expiration to October 2028. The interest rate on the Credit Facility was initially based on LIBOR plus a fixed margin which varied with the Company's credit rating. In the second quarter of 2023, the Credit Facility was amended that borrowings under the Credit Facility bear interest at a rate per annum equal, at the Company's option, either at (a) Securities Overnight Financing Rate ("SOFR") benchmark rate for U.S. dollar borrowings, or (b) a currency specific benchmark rate, plus an applicable margin which varies with the Company's credit ratings. The Company is required to maintain certain coverage and leverage ratios for the Credit Facility, which are evaluated quarterly. 49 The Credit Facility includes provisions for determining a benchmark replacement rate in the event existing benchmark rates are no longer available or in certain other circumstances, in which an alternative rate may be required. At December 31, 2024 and 2023, the Company had no borrowings under this facility. In October 2023, the Company terminated its one-year uncommitted revolving credit facility (the "Uncommitted Credit Facility"). There were no borrowings outstanding under the Uncommitted Credit Facility at December 31, 2023. The Company also maintains other credit and overdraft facilities with various financial institutions aggregating $123 million at December 31, 2024, and $113 million at December 31, 2023. There were no outstanding borrowings under these facilities at December 31, 2024 and 2023. The Company has outstanding guarantees and letters of credit with various banks aggregating $163 million and $139 million at December 31, 2024 and 2023, respectively.

Dividends The Company paid dividends on its common stock shares of $1.5 billion ($3.05 per share) in 2024, as compared with $1.3 billion ($2.60 per share) in 2023. In January 2025, the Board of Directors of the Company declared a quarterly dividend of $0.815 per share on outstanding common stock, payable in February 2025.

Contingent Payments Related To Acquisitions The classification of contingent consideration in the consolidated statements of cash flows is dependent upon whether the receipt, payment or adjustment was part of the initial liability established on the acquisition date (financing) or an adjustment to the acquisition date liability (operating).

(In millions)202420232022 Operating: Contingent consideration payments for prior year acquisitions$(92)$(41)$(38) Receipt of contingent consideration for dispositions- 1 -

Contingent consideration for prior year acquisitions$(74)$(135)$(32) Deferred consideration for prior year acquisitions (39)(67)(126) Payments of deferred and contingent consideration for acquisitions$(113)$(202)$(158)

Receipt of contingent consideration for dispositions$1 $2 $3 For acquisitions completed in 2024, and in prior years, remaining estimated future contingent payments of $161 million, and deferred consideration payments of $179 million, are recorded in accounts payable and accrued liabilities or other liabilities in the consolidated balance sheets at December 31, 2024.

Derivatives - Net Investment Hedge The Company has investments in various subsidiaries with Euro functional currencies. As a result, the Company is exposed to the risk of fluctuations between the Euro and U.S. dollar exchange rates. As part of its risk management program, the Company designated its €1.1 billion senior note debt instruments ("Euro notes") as a net investment hedge (the "hedge") of its Euro denominated subsidiaries. The hedge effectiveness is re-assessed each quarter to confirm that the designated equity balance at the beginning of each period continues to equal or exceed 80% of the outstanding balance of the Euro debt instrument and that all the critical terms of the hedging instrument and the hedged net investment continue to match. If the hedge is highly effective, the change in the debt balance related to foreign exchange fluctuations is recorded in accumulated other comprehensive loss in the consolidated balance sheets. The U.S. dollar value of the Euro notes decreased by $75 million in 2024 due to change in foreign exchange rates. The Company concluded that the hedge was highly effective and recorded a decrease to accumulated other comprehensive loss for the year ended December 31, 2024.

Purchase of remaining non-controlling interest In the second quarter of 2023, the Company purchased the remaining interest in a subsidiary for $139 million. 51

Fiduciary Liabilities Since fiduciary assets are not available for corporate use, fiduciary assets are shown separately in the consolidated balance sheets as cash and cash equivalents held in a fiduciary capacity, with a corresponding amount in current liabilities. Financing cash flows reflect an increase of $411 million in 2024 and a decrease of $255 million in 2023 related to fiduciary liabilities.

Consolidated Results of Operations For the Years Ended December 31, (In millions, except per share data) 202420232022 Revenue$24,458 $22,736 $20,720

(In millions) TotalWithin 1 Year1-3Years4-5YearsAfter 5Years Current portion of long-term debt$519 $519 $- $- $- Long-term debt19,594 - 2,463 1,545 15,586

429 106 292 29 2 Total$37,127 $2,220 $5,341 $3,647 $25,919 (a)Primarily reflects future payments of deferred and contingent purchase consideration. The table does not include the liability for unrecognized tax benefits of $112 million as the Company is unable to reasonably predict the timing of settlement of these liabilities, other than approximately $54 million that may become payable within one year. The table also does not include the remaining transitional tax payments related to the Tax Cuts and Jobs Act ("TCJA") of $48 million, which will be paid in installments from 2025 through 2026. 52

Total CompanyU.S.ROW Assumed rate of return on plan assets5.43 %6.50 %4.92 % Discount rate5.36 %5.76 %5.09 % Holding all other assumptions constant, a 0.5 percentage point change in the rate of return on plan assets and discount rate assumptions would affect net periodic benefit (credit) cost for the U.S. and U.K. plans, which together comprise approximately 83% of total pension plan liabilities, as follows:

Acquisitions and Dispositions Risks We face risks when we acquire or dispose of businesses. We have a history of making acquisitions and investments, including a total of 86 in the period from 2020 to 2024, including our recent acquisition of McGriff Insurance Services, LLC ("McGriff") and Gerolamo Holding S.À.R.L. ("Cardano"). We may not be able to successfully integrate the businesses that we acquire into our own business, or achieve any expected cost savings or synergies from the integration of such businesses, including McGriff and 25 Cardano. Subject to standard contractual protections, we may also be responsible for legacy liabilities of companies that we acquire. Moreover, if we acquire a business operating in regions or industries subject to heightened regulatory scrutiny, we may face significant costs or risks in bringing their operations into compliance with applicable laws and our internal policies. Failure to address these compliance risks could result in regulatory enforcement actions, fines or damage to our reputation. In addition, if in the future the performance of our reporting units or an acquired business varies from our projections or assumptions, or estimates about future profitability of our reporting units or an acquired business change, the estimated fair value of our reporting units or an acquired business could change materially and could result in an impairment of goodwill and other acquisition-related intangible assets recorded on our balance sheet or in adjustments in contingent payment amounts. Given the significant size of the Company's goodwill and intangible assets, an impairment could have a material adverse effect on our results of operations in any given period. We expect that acquisitions will continue to be a key part of our business strategy. Our success in this regard will depend on our ability to identify and compete for appropriate acquisition candidates and to finance and complete the transactions we decide to pursue on favorable terms with positive results. When we dispose of businesses, we may continue to be subject to certain liabilities of that business after its disposition relating to the prior period of our ownership and may not be able to negotiate for limitations on those liabilities. We are also subject to the risk that the sales price is less than the amount reflected on our balance sheet.

Our quarterly revenues and profitability may fluctuate significantly. Quarterly variations in revenues and operating results may occur due to several factors. These include: •the number of client engagements during a quarter; •the possibility that clients may decide to delay or terminate a current or anticipated project as a result of factors unrelated to our work product or progress; •fluctuations in capacity and utilization rates and clients' ability to terminate engagements without penalty; •our net colleague hires and related compensation and benefits expense; •potential limitations on the clients or industries we serve resulting from increased regulation or changing stakeholder expectations on ESG issues; 26 •the impact of changes in accounting standards or in our accounting estimates or assumptions; •the impact on us or our clients of changes in legislation, regulation and legal guidance or interpretations in the jurisdictions in which we operate, in particular as a result of increased regulatory activity and enforcement; •seasonality due to the impact of regulatory deadlines, policy renewals and other timing factors to which our clients are subject; •the success of our acquisitions or investments; •macroeconomic factors such as changes in foreign exchange rates, interest rates and global public and private capital markets, particularly in the case of Mercer, where fees in its investments business and certain other business lines are derived from the value of assets under management, advisement or administration; and •general economic conditions, including factors beyond our control affecting economic conditions such as global health crises or pandemics, severe weather, climate change, geopolitical unrest such as the war in Ukraine and the escalating conflict throughout the Middle East, protests and riots or other catastrophic events, since our results of operations are directly affected by the levels of business activity of our clients, which in turn are affected by the level of economic activity in the industries and markets that they serve. A significant portion of our total operating expenses is relatively fixed in the short term. Therefore, a variation in the number of client assignments or in the timing of the initiation or the completion of client assignments can cause significant variations in quarterly operating results for these businesses.

SUMMARY RISK FACTORS Some of the factors that could materially and adversely affect our business, financial condition, results of operations or prospects, include the following: •Our results of operations and investments could be adversely affected by geopolitical or macroeconomic conditions; •We are subject to significant uninsured exposures arising from errors and omissions, breach of fiduciary duty and other claims; •We cannot guarantee that we are or will be in compliance with all current and potentially applicable U.S. federal and state or foreign laws and regulations, and actions by regulatory authorities or changes in legislation and regulation in the jurisdictions in which we operate could have a material adverse effect on our business; •Our business or reputation could be harmed by our reliance on third-party providers or introducers; •We may not be able to effectively identify and manage actual and apparent conflicts of interest; •We could incur significant liability or our reputation could be damaged if our information systems are breached or we otherwise fail to protect client or Company data or information systems; •The costs to comply with, or our failure to comply with, U.S. and foreign laws related to privacy, data security and data protection, such as the EU's General Data Protection Regulation (GDPR) and the California Consumer Privacy Act, as amended by the California Privacy Rights Act, (CCPA), Australia's CPS 234, as well as emerging AI-related laws such as the EU's AI Act, could adversely affect our financial condition, operating results and our reputation; •Our business performance and growth plans could be negatively affected if we are not able to develop and implement improvements in technology or respond effectively to the threat of digital disruption and other technological change such as AI; •The loss of members of our senior management team or other key colleagues, or if we are unsuccessful in our efforts to attract, retain and develop talent, could have a material adverse effect on our business; •Failure to maintain our corporate culture could adversely affect our business and reputation; •Increasing scrutiny and changing laws and expectations from regulators, investors, clients and our colleagues with respect to our environmental, social and governance (ESG) practices and disclosure may impose additional costs on us or expose us to new or additional risks; •We face significant competitive pressures in each of our businesses, including from disintermediation, as our competitive landscape continues to evolve; •We rely on a large number of vendors and other third parties to perform key functions of our business operations and to provide services to our clients. These vendors and third parties may act or fail to act in ways that could harm our business; •Our inability to successfully recover should we experience a disaster or other business continuity or data recovery problem could cause material financial loss, loss of human capital, regulatory actions, reputational harm or legal liability; •We face risks when we acquire or dispose of businesses; •If we are unable to collect our receivables, our results of operations and cash flows could be adversely affected; •We may not be able to obtain sufficient financing on favorable terms; •Our defined benefit pension plan obligations could cause the Company's financial position, earnings and cash flows to fluctuate; 13 •Our significant non-U.S. operations expose us to exchange rate fluctuations and various risks that could impact our business; •Our quarterly revenues and profitability may fluctuate significantly; •Credit rating downgrades would increase our financing costs and could subject us to operational risk; •Our current debt level could adversely affect our financial flexibility; •The current U.S. tax regime has provisions which have unintended consequences and may also impact our tax rate in varying degrees based on where our global income is earned; •We are exposed to multiple risks associated with the global nature of our operations; •Results in our Risk and Insurance Services segment may be adversely affected by a general decline in economic activity; •Volatility or declines in premiums and other market trends may significantly impede our ability to grow revenues and profitability; •Adverse legal developments and future regulations concerning how intermediaries are compensated by insurers or clients, as well as allegations of anti-competitive behavior or conflicts of interest, could have a material adverse effect on Marsh's business, results of operations and financial condition; •Mercer's Wealth business is subject to a number of risks, including risks related to public and private capital market fluctuations, third-party asset managers and custodians, operations and technology risks, trading and execution risks, conflicts of interest, ESG and greenwashing, asset performance and regulatory compliance, that, if realized, could result in significant damage to our business; •Our businesses are subject to a number of risks related to the U.S. healthcare industry, including risks related to healthcare regulation and reputational damage from negative publicity; •Revenues for the services provided by our Consulting segment may decline for various reasons, including as a result of changes in economic conditions, the value of equity, debt and other asset classes, our clients' or an industry's financial condition or government regulation or an accelerated trend away from actively managed investments to passively managed investments;

Credit rating downgrades would increase our financing costs and could subject us to operational risk. Currently, the Company's senior debt is rated A- by S&P, A3 by Moody's and A- by Fitch. The Company's short-term debt is currently rated A-2 by S&P, P-2 by Moody's, and F-2 by Fitch.The Company carries a Stable outlook with S&P, Moody's and Fitch. If we need to raise capital in the future (for example, in order to maintain adequate liquidity, fund maturing debt obligations or finance acquisitions or other initiatives), credit rating downgrades would increase our financing costs, and could limit our access to financing sources. A downgrade to a rating below investment-grade could result in greater operational risks through increased operating costs and increased competitive pressures.

Global Operations We are exposed to multiple risks associated with the global nature of our operations. We conduct business globally. In 2024, approximately 52% of the Company's total revenue was generated from operations outside the U.S., and over one-half of our employees were located outside the U.S. In addition, we conduct our operations through four separate businesses. Potential conflicts of interest may arise across our businesses given the significant volume of our engagements. The geographic breadth of our activities also subjects us to significant legal, economic, operational, market, compliance and reputational risks. These include, among others, risks relating to: •economic and political conditions in the countries in which we operate; •client concentration in certain high-growth countries in which we operate; 28 •the length of payment cycles and potential difficulties in collecting accounts receivable; •unexpected increases in taxes or changes in U.S. or foreign tax laws, rulings, policies or related legal and regulatory interpretations, including recent changes to the U.K. statutory rate; •the implementation of the Organization for Economic Cooperation and Development (OECD) international tax framework, including the implementation of the Pillar 2 minimum tax regime and the Pillar 1 profit reallocation regime, potentially resulting in an adverse effect on our effective tax rate, tax payments and results of operations, particularly as key jurisdictions adopt these changes, either partially or in full, alongside potential shifts in tax laws in response to such implementation; •international initiatives to require multinational enterprises, like ours, to calculate and report profitability on a country-by-country basis, which could increase scrutiny by, or cause disagreements with, foreign tax authorities; •potential transfer pricing-related tax exposures that may result from the flow of funds among our subsidiaries and affiliates in the various jurisdictions in which we operate; •unexpected reassessment by tax authorities of interpretations of existing rules which may require companies to defend previously accepted positions and may create both new and prior-year exposures; •litigation arising from ongoing and future controversies with tax authorities; •permanent establishments created due to colleagues traveling to and doing work in certain countries, or living in such countries and working remotely post-pandemic, which are not properly compensated through transfer pricing; •our ability to obtain dividends or repatriate funds from our non-U.S. subsidiaries, including as a result of the imposition of currency controls and other government restrictions on repatriation in the jurisdictions in which our subsidiaries operate, fluctuations in foreign exchange rates and the imposition of withholding and other taxes on such payments; •geopolitical tensions, such as the war in Ukraine and the conflict throughout the Middle East, in countries where we operate, international hostilities, international trade disputes, terrorist activities, natural disasters, pandemics, and infrastructure disruptions; •local investment or other financial restrictions that foreign governments may impose; •potential lawsuits, investigations, market studies, reviews or other activity by foreign regulatory or law enforcement authorities or legislatively appointed commissions, which may result in potential modifications to our businesses, related private litigation or increased scrutiny from U.S. or other regulators; •potential costs and difficulties in complying with a wide variety of foreign laws and regulations (including tax systems) administered by foreign government agencies, some of which may conflict with U.S. or other sources of law; •potential costs and difficulties in complying, or monitoring compliance, with foreign and U.S. laws and regulations that are applicable to our operations abroad, including trade sanctions laws relating to countries such as Afghanistan, Belarus, Cuba, Iran, North Korea, Russia, Syria, Ukraine (Russia-controlled territories) and Venezuela, anti-corruption laws such as the U.S. Foreign Corrupt Practices Act and the U.K. Bribery Act 2010; •limitations or restrictions that foreign or U.S. governments and regulators may impose on the products or services we sell, the methods by which we sell our products and services and the manner in which and the amounts we are compensated; •potential limitations or difficulties in protecting our intellectual property in various foreign jurisdictions; •limitations that foreign governments may impose on the conversion of currency or the payment of dividends or other remittances to us from our non-U.S. subsidiaries;

•engaging and relying on third parties to perform services on behalf of the Company; and •potential difficulties in monitoring employees in geographically dispersed locations. 29

RISKS RELATING TO OUR CONSULTING SEGMENT Our Consulting segment, conducted through Mercer and Oliver Wyman Group, represented 37% of our total revenue in 2024. Our businesses in this segment are subject to particular risks. Mercer's Wealth business is subject to a number of risks, including risks related to public and private capital market fluctuations, third-party asset managers and custodians, operations and technology risks, trading and execution risks, conflicts of interest, ESG and greenwashing, asset performance and regulatory compliance, that, if realized, could result in significant damage to our business. Mercer's Investments business provides clients with digital tools, investment consulting and investment management services. Mercer's Investments business is subject to a number of risks, including risks related to litigation (both by clients and by plan participants, particularly when we act in a fiduciary capacity), liquidity and market volatility, an inability to obtain contractual limitations of liability for errors & omissions in certain jurisdictions or parts of our business, third-parties, our operations and technology (including the use of AI), trading and execution errors, conflicts of interest, asset performance and regulatory compliance and scrutiny, which could arise in connection with these offerings. For example, Mercer's manager research or due diligence on an asset manager may fail to uncover material deficiencies or fraud that could result in investment losses to a client. There is a risk that Mercer will fail to properly or timely implement or execute a client's investment policy or strategy or instruction, which could cause an incorrect or untimely allocation of client assets among asset classes, asset managers, or strategies or result in a trading error. Mercer may also be perceived as making inaccurate or misleading statements regarding the investment strategies of our offerings or investments with respect to ESG or sustainability, commonly referred to as "greenwashing," or recommending certain asset managers to clients or offering delegated solutions a potential or existing client, solely to enhance its own compensation or due to other conflicts of interest. Asset classes may perform poorly, or asset managers may underperform their benchmarks, due to poor market performance, a downturn in the global markets, negligence or other reasons, resulting in poor returns or loss of client assets. Changes in the value of equity, debt, currency, real estate, commodities, alternatives or other asset classes, in particular as a result of a downturn in the global markets, could cause the value of assets under management or advisement, and the fees earned by Mercer to decline. Mercer or its clients may be subject to claims or class action litigation relating to advice given or investment decisions made by plan sponsors and plan fiduciaries, particularly relating to 401(k) plans in the U.S. or pension schemes in the U.K. These risks, if realized, could result in significant liability and damage our business. Our businesses are subject to a number of risks related to the U.S. healthcare industry, including risks related to healthcare regulation and reputational damage from negative publicity. Mercer, MMA and MMB help public and private sector employers design and manage employee health and welfare programs. Their services include plan design, brokering of insurance programs, administration and other consulting and specialty services. The healthcare industry, inclusive of health insurance, is regulated by federal, state and local governments in the U.S., and by regulators and governments in other countries where we do business. The laws and rules governing the healthcare industry and interpretations of those laws and rules are subject to frequent and often unpredictable change. For example, legislation or regulatory action that has the impact of disincentivizing U.S. companies from offering employer-sponsored health insurance could ultimately reduce the revenue we receive when consulting on and broking these policies on behalf of our corporate clients. Legislation seeking to regulate pharmacy benefit management services introduced or enacted at the federal or state level could impact the compensation structure and how much we are paid where we advise clients on prescription drug coverage. Changes to U.S. government health programs, like Medicaid, could also impact our consulting and ancillary services for government clients that manage these programs. Moreover, the health care industry is regularly subject to negative publicity, including as a result of governmental investigations, adverse media coverage and political debate concerning industry regulation. Negative publicity may adversely affect our business and damage our reputation, and expose us to unexpected or unwarranted regulatory scrutiny, including 31 as a result of the revenue our businesses receive from healthcare-related services including our consulting advice to clients from different areas of the healthcare industry. Revenues for the services provided by our Consulting segment may decline for various reasons, including as a result of changes in economic conditions, the value of equity, debt and other asset classes, our clients' or an industry's financial condition or government regulation or an accelerated trend away from actively managed investments to passively managed investments.

RISKS RELATING TO THE COMPANY GENERALLY Macroeconomic Risks Our results of operations and investments could be adversely affected by geopolitical or macroeconomic conditions. Geopolitical and macroeconomic conditions, including from multiple major wars and global conflicts, slower GDP growth or recession, lower interest rates, capital markets volatility, inflation and changes in insurance premium rates affect our clients' businesses and the markets they serve. These conditions, including inflationary expense pressure with our clients, may reduce demand for our services or depress pricing for those services, which could have a material adverse effect on our results of operations. For example, the war in Ukraine and the conflict throughout the Middle East have resulted in worldwide geopolitical and macroeconomic uncertainty and may negatively impact other regional and global economic markets (including Europe, the Middle East and the U.S.), companies in other countries (particularly those that have done business with Russia or have substantial exposure to, or operations in, impacted countries) and various sectors, industries and markets for securities and commodities globally, such as oil and natural gas, and may increase financial market volatility and adversely impact regional and global economic markets, industries and companies. Changes in macroeconomic and geopolitical conditions could also shift demand to services for which we do not have a competitive advantage, and this could negatively affect the amount of business that we are able to obtain. 14 More generally, our investments, including our minority investments in other companies as well as our cash investments and those held in a fiduciary capacity, are subject to general credit, liquidity, counterparty, foreign exchange, market and interest rate risks. For example, fluctuations in interest rates and foreign exchange rates between the U.S. dollar and foreign currencies may adversely affect our results of operations. Lower interest rates may lead to a decline in our fiduciary income. These risks may be exacerbated by global macroeconomic conditions, market volatility and regulatory, financial and other difficulties affecting the companies in which we have invested or that may be faced by financial institution counterparties. During times of stress in the banking industry, counterparty risk can quickly escalate, potentially resulting in substantial trading and investment losses for corporate and other investors. In addition, we may incur investment losses as a result of unusual and unpredictable market developments, and we may experience lower earnings if the yields on investments begin to decline. If the banking system or the fixed income, interest rate, credit or equity markets deteriorate, the value and liquidity of our investments could be adversely affected. Finally, the value of the Company's assets held in other jurisdictions, including cash holdings, may decline due to foreign exchange fluctuations.

The U.S. and foreign laws and regulations that apply to our operations are complex and may change rapidly, and our efforts to comply and keep up with them require significant resources. In some cases, these laws and regulations may decrease the need for our services, increase our costs, negatively impact our revenues or impose operational limitations on our business, including on the products and services we may offer or on the amount or type of compensation we may collect. In particular, the financial and operational impact of complying with laws and regulations has increased in the current global environment of increased regulatory activity and enforcement. In addition, in the United States, shifts in regulatory priorities, policy approaches or interpretations of existing laws by federal, state or local governments occur following changes in U.S. presidential administrations, which often leads to changes involving the level of regulatory oversight and focus on businesses and certain industries, particularly financial services. Changes or uncertainty with respect to the applicable laws and regulations may impose additional and unforeseen costs on us or pose new or previously immaterial risks to us. There can be no assurance that current and future government regulations will not adversely affect our business, and we cannot predict new regulatory priorities, the form, content or timing of regulatory actions, and their impact on our business and operations. In addition, geopolitical conflict, such as the war in Ukraine and the conflict throughout the Middle East, has resulted in, and may continue to result in, new and rapidly evolving trade sanctions, which may increase our costs, negatively impact our revenues or impose additional operational limitations on our businesses. Changes to tax laws, trade agreements, tariffs, labor policies, or environmental standards could also result in increased costs or operational changes. While we attempt to comply with applicable laws and regulations, there can be no assurance that we, our colleagues, our consultants and our contractors and other agents are in full compliance with such laws and regulations or interpretations at all times, or that we will be able to comply with any future laws or regulations. If we fail to comply or are accused of failing to comply with applicable laws and regulations, including those referred to above, or new and evolving regulations regarding cybersecurity, AI or sustainability matters, we may become subject to investigations, criminal penalties, civil remedies or other consequences, including fines, injunctions, loss of an operating license or approval, increased scrutiny or oversight by regulatory authorities, the suspension of individual employees, limitations on engaging in a particular business or redress to clients or other parties, and we may become exposed to negative publicity or reputational damage. Moreover, our failure to comply with laws or regulations in one jurisdiction may result in increased regulatory scrutiny by other regulatory agencies in that jurisdiction or regulatory agencies in other jurisdictions. These inquiries consume significant management attention, and the cost of compliance and the consequences of failing to be in compliance could therefore have a material adverse effect on our business. In most jurisdictions, government regulatory authorities have the power to interpret and amend or repeal applicable laws and regulations, and have discretion to grant, renew and revoke the various licenses and approvals we need to conduct our activities. Such authorities may require the Company to incur substantial costs in order to comply with such laws and regulations. In some areas of our businesses, we act on the basis of our own or the industry's interpretations of applicable laws or regulations, which may conflict from state to state or country to country. In the event those interpretations eventually prove different from the interpretations of regulatory authorities, we may be penalized or precluded from carrying on our previous activities. Moreover, the laws and regulations to which we are subject may conflict among the various jurisdictions and countries in which we operate, which increases the likelihood of our businesses being non-compliant in one or more jurisdictions.

In addition, we may be responsible for the legal and regulatory liabilities of companies that we acquire. 16 Additional information regarding certain ongoing investigations and certain other legal and regulatory proceedings is set forth in Note 16, Claims, Lawsuits and Other Contingencies, in the notes to the consolidated financial statements included under Part II, Item 8 of this report.

Cybersecurity, Data Protection and Technology Risks We could incur significant liability or our reputation could be damaged if our information systems are breached or we otherwise fail to protect client or Company data or information systems. In operating our business and providing services and solutions to clients, we collect, use, store, transmit and otherwise process certain electronic information, including personal, confidential, proprietary and sensitive data such as financial records, health care, mergers and acquisitions and personal data of our clients, colleagues and vendors. We rely on the efficient, uninterrupted and secure operation of complex information technology systems and networks to operate our business and securely process, transmit and store electronic information. In the normal course of business, we also share electronic information with our vendors and other third parties, which in some cases is critical to our ability to deliver services to our clients. This electronic information comprises sensitive and confidential data, including information related to financial records, health care, mergers and acquisitions and clients' personal data. Our information technology systems and information security control systems, and those of our numerous third-party providers, as well as the control systems of critical infrastructure they rely on, such as power grids, and undersea cables, are potentially vulnerable to unauthorized access, damage or interruption from a variety of external threats, including software bugs, physical attack, cyberattacks, computer viruses and other malware, malicious or destructive code, ransomware, social engineering attacks (including phishing, business e-mail compromise and digital or telephonic impersonation), hacking theft, denial-of-service attacks and other types of data and systems-related modes of attack. The techniques used to achieve such unauthorized access, damage or interruption change frequently and new techniques may not be identified until they are launched against a target, and we may be unable to anticipate these techniques or implement adequate preventative or remedial measures, resulting in potential data loss, data unavailability, data corruption or other damage to information technology systems. In addition, remote and hybrid work arrangements have increased the risk of phishing and other cybersecurity attacks, unauthorized dissemination of personal, confidential, proprietary or sensitive data, and unauthorized access to company computing assets. Further, a disruption of physical infrastructure could impact our ability to conduct business and service clients. This may include deliberate or unintentional disruption of service to electrical systems, satellite communications, undersea or terrestrial cable systems, Internet services, or other systems our colleagues or third parties rely on us to conduct business in a multitude of jurisdictions across the globe. Disruptions may be the result of weather, natural disaster, war, terrorism, pandemic, or other natural or geopolitical events. Our systems are also subject to compromise from internal threats such as fraud, mistakes, misconduct or other improper action by employees, vendors and other third parties with otherwise legitimate access to our systems. Moreover, we face the ongoing challenge of managing access controls in a complex environment. The latency of a compromise is often measured in months but could be years, and we may not be able to detect a compromise in a timely manner, and even if detected, there can be no assurance that we can mitigate or remediate such compromise in an adequate or timely manner. We could experience significant financial and reputational harm if our information systems are breached, sensitive client or Company data are compromised, surreptitiously modified, rendered inaccessible for any period of time or maliciously made public, or if we fail to make adequate or timely disclosures to the public, 17

We collect data from clients and individuals located all over the world and leverage systems and teams to process it. As a result, we are subject to a variety of laws and regulations in the U.S., Europe and around the world regarding privacy, data protection, data security and cyber security. These laws and regulations are continuously evolving and developing. Some of these laws and regulations are increasing the level of data handling restrictions, including rules on data localization, all of which could affect our operations and result in regulatory liability and high fines. In particular, high-profile data breaches at major companies continue to be disclosed regularly, which is leading to even greater regulatory scrutiny and significant fines, which are not limited to data breaches as regulators increasingly focus on other data processing activities, including those related to ad-tech and "data subject" rights. The number of laws that apply to us keeps increasing and the interpretation of such laws is often uncertain and may be conflicting. At the international level, we are subject to an increasing number of comprehensive privacy laws including, for example, those passed in Indonesia, the Kingdom of Saudi Arabia, India and Australia. Many of these laws, which are modeled after the GDPR, have greatly increased the jurisdictional reach of privacy laws and added a broad array of requirements for handling personal data, such as the public disclosure of data breaches, data protection impact assessments, data portability and the appointment of data protection officers in some cases. Given the breadth and depth of changes in data protection obligations, including classifying data and committing to a range of administrative, technical and physical controls to protect data and enable data transfers across borders, our compliance with such laws will continue to require time, resources and review of the technology and systems we use. Despite a proliferation of regulatory guidance papers, there remains uncertainty in key areas related to these laws, and that uncertainty could result in potential liability for our failure to meet our obligations, including the possibility of significant fines some of which can amount to 4% or more of our global revenue. Further, despite developments such as the U.S.- EU Data Privacy Framework and the U.S.- U.K. Data Bridge, there remains a high level of uncertainty concerning the flow of personal information between the U.S. and EU, between the U.S. and the U.K. and between the U.K. and the EU. This uncertainty may impair our ability to offer our existing and planned products and services or increase our cost of doing business. Some of the global laws enacted in recent years, including those in China and the Kingdom of Saudi Arabia, also include data localization elements that will require that certain personal data stay within their borders. These requirements are complex and our efforts to comply with them require significant resources, and we cannot guarantee we are or will be in full compliance with such laws at all times. At the U.S. federal level, we are subject to various privacy laws and regulations, including those promulgated under the authority of the U.S. Federal Trade Commission, which has the authority to regulate and enforce against unfair or deceptive acts or practices in or affecting commerce, including with respect to data privacy and cybersecurity. At the U.S. state level, we are subject to laws and regulations related to privacy, such as the CCPA, which introduced concepts such as transparency and rights like access and deletion, that have been enacted by over twenty states with more such laws expected to pass in future years. These laws establish a privacy framework for covered businesses, including various obligations imposed on them related to the personal information they collect and use, and offer various rights for their state residents. Some of these laws provide a private right of action for violations and in some cases damages may be significant. Many of these laws diverge from the CCPA and create their own set of rules, and this proliferation of inconsistent state level privacy laws will add operational complexity and increased risk of noncompliance or violations which could trigger enforcement action or litigation. In addition to data protection and data privacy laws, foreign countries and U.S. states are enacting cybersecurity laws and regulations. For example, in late 2023 the New York State Department of Financial Services (NYDFS) issued amendments to its previous cybersecurity regulations which imposed obligations on companies such as Marsh McLennan, including for example, requiring companies to provide evidence of how they are implementing their data retention, data governance and data classifications policies and procedures. A number of states have also adopted laws covering data collected by insurance licensees that include security and breach notification requirements. All of these evolving compliance and operational requirements impose significant costs that are likely to increase over time, may divert resources from other initiatives and projects and could restrict the way services involving data are offered, all of which may adversely affect our results of operations. Failure to comply with some of these obligations, especially those related to data retention requirements, could expose us to regulatory fines and other penalties. Many statutory requirements, both in the U.S. and abroad, include obligations for companies to notify individuals of security breaches involving certain personal information, which could result from breaches experienced by us or our vendors. For example, laws in all 50 U.S. states generally require businesses to provide notice under 20

We have numerous vendors and other third parties who receive personal information from us in connection with the services we offer our clients and our employees. We also use hundreds of IT vendors and software providers to maintain and secure our global information systems infrastructure. In addition, we have migrated certain data, and may increasingly migrate data, to the cloud where it is hosted by third-party providers. Some of these vendors and third parties also have direct access to our systems or data. We are at risk of a cyberattack involving a vendor or other third parties, which could result in a breakdown of such third party's data protection processes or the cyberattackers gaining access to our infrastructure or data through a supply chain attack. Highly publicized data security breaches, such as the October 2023 attack on Okta, may embolden malicious actors to target the IT supply chain and providers of business software. In addition, we depend on our third-party vendors to keep software current. Our systems' availability could be impacted by poor or improperly tested software code and updates deployed to our environment by a third-party through normal and expected processes, which occurred with the CrowdStrike event in July 2024. Our control over and ability to monitor the cybersecurity practices of our third-party vendors and service providers, and other third parties with whom we do business, remains limited, and there can be no assurance that we can prevent, mitigate, or remediate the risk of any compromise or failure in the development processes or cybersecurity infrastructure or IT controls owned or controlled by such third parties. Additionally, any contractual protections with such third parties, including our right to indemnification, if any, may be limited or insufficient to prevent a negative impact on our business from such compromise or failure. We have a history of making acquisitions and investments. The process of integrating the information systems of any businesses we acquire is complex and exposes us to additional risk. For instance, we may not adequately identify weaknesses and vulnerabilities in an acquired entity's information systems, either before or after the acquisition, which could affect the value we are able to derive from the acquisition, expose us to unexpected liabilities or make our own systems more vulnerable to a cyberattack. In addition, if we discover a historical compromise, security breach or other cyber incident related to the target's information systems following the close of the acquisition, we may be liable and exposed to significant costs and other unforeseen liabilities. We may also be unable to integrate the systems of the businesses we acquire into our environment in a timely manner, which could further increase these risks until such integration takes place. We have experienced data incidents and cybersecurity breaches, such as malware incursions (including computer viruses and ransomware), vulnerabilities in the software on which we rely, users exceeding their data access authorization, employee misconduct and incidents resulting from human error, such as emails sent to the wrong recipient, loss of portable and other data storage devices or misconfiguration of software or hardware resulting in inadvertent exposure of personal, sensitive, confidential or proprietary information or reduction of system availability. Like many companies, we are also subject to social engineering attacks such as WhatsApp scams and regular phishing email campaigns directed at our employees that can result in malware infections, fraud and data loss. Although these incidents have resulted in data loss and other damages, to date, they have not had a material adverse effect on our business or operations. In the future, these types of incidents could result in personal, sensitive, confidential or proprietary information, including client, employee or Company data, being lost or stolen, surreptitiously modified, rendered inaccessible for any period of time, or maliciously made public, which could have a material adverse effect on our business. In the event of a cyberattack, we might have to take our systems offline, which could interfere with services to our clients or damage our reputation. A cyberattack may also result in systems or data being encrypted or otherwise unavailable due to ransomware or other malware. We also may be unable to detect an incident, assess its severity or impact, or appropriately respond in a timely or adequate manner. In addition, our liability insurance, which includes cyber insurance, may not be sufficient in type or amount to cover us against claims related to security breaches, cyberattacks and other related data and system incidents. Further, we cannot be sure that our existing coverage will continue to be available on acceptable terms or at all or that our insurers will not deny coverage as to any future claim. The costs to comply with, or our failure to comply with, U.S. and foreign laws related to privacy, data security and data protection, such as the EU's General Data Protection Regulation (GDPR) and the California Consumer Privacy Act, as amended by the California Privacy Rights Act, (CCPA), Australia's CPS 234, as well as emerging AI-related laws such as the EU's AI Act, could adversely affect our financial condition, operating results and our reputation. Improper collection, use, disclosure, cross border transfer, retention and other processing of confidential, personal, or proprietary data could result in regulatory scrutiny, legal and financial liability, or harm to our reputation. In operating our business and providing services and solutions to clients, we store and transfer sensitive employee and client data, including personal data, in and across multiple jurisdictions. 19

law enforcement agencies or regulators following any such event, whether due to delayed discovery or a failure to follow existing protocols. Cyberattacks are increasing in frequency and evolving in nature. We are at risk of attack by a variety of adversaries, including nation states, state-sponsored organizations, opportunistic attacks, and organized crime and hackers, through use of increasingly sophisticated methods of attack, including the deployment of AI to find and exploit vulnerabilities, "deep fakes", long-term, persistent attacks (referred to as advanced persistent threats) and the use of the IT supply chain to introduce malware through software updates or compromised suppliers accounts or hardware. In particular, the advance of AI and large language models has given rise to additional vulnerabilities and potential entry points for cyber threats. With generative AI tools, threat actors may have additional tools to automate breaches or persistent attacks, evade detection, or generate sophisticated phishing emails or other forms of digital impersonation, doing so quickly and without requiring deep technical understanding of potential exploits. In addition, increasing use of generative AI models in our internal systems may create new attack methods for adversaries. Because generative AI is a new field, understanding of cybersecurity risks and protection methods continues to develop, and features that rely on generative AI, including in services provided to us by third parties, may be susceptible to unanticipated cybersecurity threats from sophisticated adversaries and other cybersecurity incidents. Further, we are at increased risk of a cyberattack during periods of heightened geopolitical conflict, such as the war in Ukraine and the conflict throughout the Middle East, as diplomatic events and economic policies may trigger espionage or retaliatory cyber incidents. Additionally, nation states may deploy threat actors masquerading as potential candidates for hire at target companies to perform corporate espionage or execute internal cyber threat activities. Despite our efforts to comply with applicable cybersecurity requirements and mitigate risks of cybersecurity threats, we cannot be certain that our security measures will definitively prevent, contain, detect, or remediate all cybersecurity threats or incidents or other instructions from malware currently in existence or developed in the future. As the breadth and complexity of the technologies we use and the software and platforms we develop continue to grow, including as a result of the use of mobile devices, cloud services, "open source" software, social media tools and the increased reliance on devices connected to the Internet (known as the "Internet of Things"), the potential risk of security breaches and cyber-attacks also increases. Despite ongoing efforts to improve our ability to protect data from compromise, we may not be able to protect all of our data across our diverse systems. Our efforts to improve and protect data from compromise may also identify previously undiscovered instances of security breaches or other cyber incidents. Our policies, employee training (including phishing prevention training), procedures and technical safeguards may also be insufficient to prevent, detect or remediate improper access to confidential, personal or proprietary information. In addition, the competition for talent in the data privacy and cybersecurity space is intense, and we may also be unable to hire, develop or retain suitable talent capable of adequately detecting, mitigating or remediating these risks. Should an attacker gain access to our network using compromised credentials of an authorized user, we are at risk that the attacker might successfully leverage that access to compromise additional systems and data. Certain measures that could increase the security of our systems, such as data encryption (including encryption of data at rest), heightened monitoring and logging, scanning for source code errors or deployment of multi-factor authentication, take significant time and resources to deploy broadly, and such measures may not be deployed in a timely manner or be effective against an attack. The inability to implement, maintain and upgrade adequate safeguards could have a material adverse effect on our business. Our information systems must be continually updated, patched, and upgraded to protect against known vulnerabilities. The volume of new software and infrastructure vulnerabilities continues to increase markedly, as has the criticality of patches and other mitigation and remedial measures. In addition to mitigating and remediating newly identified vulnerabilities, previously identified vulnerabilities must also be continuously addressed. Accordingly, we are at risk that cyberattackers exploit these vulnerabilities before they have been communicated by vendors or addressed. Due to the large number and age of the systems and platforms that we operate, the increased frequency at which vendors are issuing security patches to their products, the need to test patches and, in some cases, coordinate with clients and vendors, before they can be deployed, we perpetually face the substantial risk that we cannot deploy patches in a timely manner. Some security patches may not be compatible with other software running on our systems and therefore may not be able to be deployed. We are also dependent on third party vendors to keep their systems patched and secure in order to protect our data. Any failure related to these activities could have a material adverse effect on our business. 18

COMPETITIVE CONDITIONS The Company faces significant competition in all of its businesses from providers of similar products and services, including competition with regard to identifying and pursuing acquisition candidates. The Company also encounters strong competition throughout its businesses from both public corporations and private firms in attracting and retaining qualified employees. As the Company has clients across various geographies, industries and sizes, the competitive landscape is complex and varies across numerous markets. In addition to the discussion below, refer to "Risks Relating to the Company Generally - Competitive Risks," in Part I, Item 1A of this report. Risk and Insurance Services. The Company's combined insurance and reinsurance services businesses are global in scope. Our insurance and reinsurance businesses compete principally on the sophistication, range, quality and cost of the services and products they offer to clients. The Company encounters strong competition from other insurance and reinsurance brokerage firms that operate on a global, regional, national or local scale in every geography in which it operates, from insurance and reinsurance companies that market, distribute and service their insurance and reinsurance products without the assistance of brokers and from other businesses, including commercial and investment banks, accounting firms, consultants and online platforms, that provide risk-related services and products or alternatives to traditional insurance brokerage services. In addition, third party capital providers have entered the insurance and reinsurance risk transfer market offering products and capital directly to the Company's clients. Their presence in the market increases the competitive pressures that the Company faces. 8 Certain insureds and groups of insureds have established programs of self-insurance as a supplement or alternative to purchasing traditional third-party insurance, thereby reducing in some cases their need for third-party insurance placements. Certain insureds also obtain coverage directly from insurance providers. There are also many other providers of managing general agents, affinity programs and private client services that compete with the Company's offerings. Consulting. The Company's consulting businesses face strong competition from other privately and publicly held worldwide and national companies, as well as regional and local firms. These businesses generally compete on the basis of the range, quality and cost of the services and products they provide to clients. Competitors include independent consulting, broking and outsourcing firms, as well as consulting, broking and outsourcing operations affiliated with larger accounting, information systems, technology and financial services firms. Mercer's Health business faces additional competition from insurers and from non-traditional competitors seeking to enter or expand in the health benefits space (for example, payroll firms, large consumer businesses, and digitally oriented consultancies). Mercer's investments business faces competition from many sources, including investment consulting firms (many of which offer delegated services), investment management firms and other financial institutions. In some cases, clients have the option of handling the services provided by Mercer and Oliver Wyman Group internally, without assistance from outside advisors.

Insurance Broking and Risk Advisory In its core insurance broking and risk advisory business, Marsh employs a team approach to identify, quantify and address clients' risk management and insurance needs. Marsh's product and service offerings include risk analysis, insurance program design and placement, insurance program support and administration, claims support and advocacy, alternative risk strategies and a wide array of risk analysis and risk management consulting services. Clients benefit from Marsh's advanced analytics, deep technical expertise, specialty and industry knowledge, collaborative global culture and the ability to develop innovative solutions and products. 1 The firm's resources also include nearly three dozen specialty and industry practices, including cyber, construction, renewable energy, healthcare, and financial and professional service practices. Marsh provides services to clients of all sizes, including large multinational companies ("Risk Management"), high growth middle-market businesses ("Corporate"), small commercial enterprises and high net-worth private clients, and affinity group members ("Commercial & Consumer"). Marsh's segments are designed to build stronger value propositions and operating models to optimize solutions and services for clients depending on their needs. Risk Management. Marsh has an extensive global footprint and market-leading advisory and placement services that benefit large domestic and international companies and institutions facing complex risk exposures. These clients are also supported by Marsh's robust analytics and a growing digital experience. In addition, Marsh's largest global clients are serviced by Marsh Multinational, a dedicated team of colleagues from around the world focused on delivering service excellence and insurance solutions to clients wherever they are located. Marsh is digitizing the client experience through tools such as LINQ, Marsh's account and service application; Blue[i], a suite of analytics tools for clients; and Bluestream, a digital brokerage platform that enables clients to provide insurance to their customers or suppliers in a B2B2C distribution model. Marsh provides global expertise and an intimate knowledge of local markets, helping clients navigate local regulatory environments to address the worldwide risk issues that confront them. •Marsh Specialty is an integrated and globally coordinated team of experts who provides clients in highly specialized industry and product areas with data driven insights, service, advice and access to global insurance markets. These specialists support clients who require advice and support across aviation & space, credit specialties, construction, energy & power, financial & professional services (FINPRO), marine & cargo, and private equity, mergers & acquisitions (PEMA). Corporate. Middle market clients are served by Marsh's brokerage operations globally; this segment is also serviced by Marsh & McLennan Agency (MMA) in the United States (U.S.). •Marsh McLennan Agency (MMA) provides business insurance, employee health and benefits, retirement and wealth management, and private client insurance solutions to individuals and mid-market organizations. MMA advises on insurance program structure and market dynamics, along with industry expertise and transactional capability. Since its first acquisition in 2009, MMA has acquired more than 125 agencies. Commercial & Consumer. Clients in this market segment typically face less complex risks and are served by Marsh's innovative product and placement offerings and growing capabilities in digitally enabled distribution and administration. •Victor Insurance Managers (Victor) is one of the largest underwriting managers of professional liability, catastrophe, and other specialty insurance programs worldwide. In the U.S., Victor Insurance Managers (US) and ICAT Managers underwrite, solicit, sell and service coverages through a national third-party distribution network of licensed brokers and agents. Through its Victor Small Business platform, Victor deploys cloud-based technology to enable independent insurance agents, on behalf of their small business clients, to obtain online quotes from multiple insurance providers and bind property and casualty and workers compensation insurance policies in real time. Victor also manages Torrent Technologies, the nation's largest service provider to the National Flood Insurance Program (NFIP). Victor Insurance Managers (Canada), a leading managing general agent in Canada, delivers professional liability and construction insurance and other property and casualty programs and administers group and retiree benefits programs and claims handling operations for individuals, organizations and businesses. Victor also has a business in the U.K., the Netherlands, Italy, Germany and Australia.

Mercer operates in the following areas: Health. Mercer helps public and private sector employers design and manage employee health and welfare programs; administer health benefits and flexible benefits programs, including benefits outsourcing; engage employees with their health benefits through a digital experience; and comply with local benefits-related regulations. Mercer provides a range of advice and solutions to clients, which, depending on the engagement, may include: total health and wellness management strategies; global health brokerage solutions; vendor performance and audit; life and disability management; and measurement of healthcare provider performance. These services are provided through fee-based consulting as well as commission-based brokerage services in connection with the selection of insurance companies and healthcare providers. Mercer also provides consulting and actuarial services to U.S. state governments to support the purchase of healthcare through state Medicaid programs. Mercer offers clients tools to enhance employee engagement with their health benefits through its DarwinSM platform. Outside of the U.S., Mercer and Marsh go to market together for Health benefits brokerage and consulting under the Mercer Marsh BenefitsSM (MMB) brand, as described above. Wealth. Through its Wealth business, Mercer assists clients worldwide in the design, governance and risk management of defined benefit, defined contribution, hybrid retirement plans and other pools of assets, and with investment of those assets. 4 Mercer provides actuarial consulting, investment consulting, investment management and related services to the sponsors and trustees of pension plans and master trusts. Mercer also provides investment consulting and investment management services to foundations, endowments, sovereign wealth funds, U.S. public sector clients, insurance companies, financial intermediaries, family offices and individuals. Mercer provides retirement plan outsourcing, including administration and delivery of defined benefit and defined contribution retirement benefits. The investment consulting and investment management services provided by Mercer and its affiliates (investment management services may also be referred to as "investment solutions," "delegated solutions," "fiduciary management" or "outsourced Chief Investment Officer (OCIO) services") cover a range of stages of the investment process, from investment research (through its Mercer-Insight service), asset allocation and implementation of investment strategies to ongoing portfolio management services. Mercer provides these services primarily to institutional and other sophisticated investors including retirement plans (e.g., defined benefit and defined contribution), master trusts, endowments and foundations, sovereign wealth funds, U.S. public sector clients, insurance companies and family offices, as well as wealth managers and other financial intermediaries, primarily through manager of manager strategies and funds sponsored and managed by Mercer. Mercer's clients invest in both traditional asset classes (e.g., equities, fixed income and cash equivalents) and alternative or private market strategies (e.g., private equity, private debt, real estate, other real assets and hedge funds). As of December 31, 2024, Mercer and its global affiliates had assets under management of approximately $617 billion worldwide. Mercer also provides services to individual retail clients, including financial planning, high net worth risk solutions and other discretionary investment services. Career. Mercer advises organizations on the engagement, skill assessment, management and reward of employees; the design of executive remuneration programs; people and workforce strategies during business transformation; improvement of human resource (HR) effectiveness; and the implementation of digital and cloud-based Human Resource Information Systems. In addition, through proprietary survey data and decision support tools, Mercer provides clients with human capital information and analytical capabilities to improve strategic human capital decision making. Mercer's Career products include solutions relating to rewards, mobility, engagement, workforce analytics and assessments. Mercer helps clients plan and implement HR programs and other organizational changes designed to maximize employee engagement.

•Consumer, Telecommunications, and Technology •Energy and Natural Resources •Financial Services (including corporate and institutional banking, public policy, and retail and business banking)

•Government and Public Institutions •Healthcare and Life Sciences •Insurance and Asset Management •Private Capital •Transportation and Advanced Industrials: (including aviation; aerospace and defense; rail; express, postal and third-party logistics; services, including travel and leisure, environmental and facility management, and business and tech services; and CAVOK, which provides technical consulting and market forecasting services) 5

•Performance Transformation. Oliver Wyman helps clients to design, realize and sustain value growth via large-scale transformations. Lippincott is a creative consultancy specializing in brand and innovation that shapes recognized brands and experiences for clients globally. Lippincott's strategy and design experts have helped create some of the world's most recognized brands. NERA Economic Consulting provides economic analysis and advice to public and private entities to achieve practical solutions to highly complex business and legal issues arising from competition, regulation, public policy, strategy, finance and litigation. NERA professionals operate worldwide assisting clients including corporations, governments, law firms, regulatory agencies, trade associations, and international agencies. NERA's specialized practice areas include: antitrust, securities, complex commercial litigation, energy, environmental economics, network industries, intellectual property, product liability and mass torts and transfer pricing.

EXECUTIVE OFFICERS OF THE COMPANY The executive officers and executive officer appointees of the Company are appointed annually by the Company's Board of Directors. The following individuals are the executive officers of the Company as of February 10, 2025: Paul Beswick, age 50, is Senior Vice President and Global Chief Information and Operations Officer (CIOO) of Marsh McLennan. As CIOO, Mr. Beswick leads the Business and Client Services team and oversees Marsh McLennan's Operations and Technology teams in support of the Company's global businesses. Prior to assuming this expanded role in January 2025, Mr. Beswick served as Chief Information Officer from 2021 to 2025. He was previously a Partner and Global Head of Oliver Wyman Labs and the Digital Practice at Oliver Wyman where he worked in various sectors, including financial services, retail, transportation, telecoms, and consumer goods. Before this, Mr. Beswick headed Oliver Wyman's North American Retail Practice. Katherine J. Brennan, age 46, is Senior Vice President and General Counsel of Marsh McLennan. In this role, she leads Marsh McLennan's global legal, compliance and public affairs function, which supports the Company's four businesses, Marsh, Guy Carpenter, Mercer and Oliver Wyman. She also leads the Company's sustainability efforts. Ms. Brennan has held several legal and compliance leadership roles at Marsh McLennan, serving most recently as General Counsel, Marsh LLC. She also served as Deputy General Counsel, Corporate Secretary and Chief Compliance Officer for Marsh McLennan from 2017 to 2021, and prior to that, as General Counsel of Guy Carpenter. Ms. Brennan currently serves on the Board of the Red Cross of Greater New York. John Q. Doyle, age 61, is President and Chief Executive Officer of Marsh McLennan. Previously, from 2021 to 2022 he served as Group President and Chief Operating Officer, responsible for the strategy and operational objectives of Marsh McLennan's four global businesses. He joined the firm in 2016 as President of Marsh, then led Marsh as President and CEO from 2017 to 2021. An industry veteran with more than 35 years of management experience, Mr. Doyle began his career at AIG, where he held several executive positions. He is a member of the Board of the New York Police and Fire Widows' and Children's Benefit Fund, a Trustee of the Inner-City Scholarship Fund, a member of the Board of Overseers of the Maurice R. Greenberg School of Risk Management, Insurance and Actuarial Science at St. John's University and a director of Catalyst Inc. Mr. Doyle serves as the Chairman of the U.S. Federal Advisory Committee on Insurance. Carmen Fernandez, age 51, is Senior Vice President and Chief People Officer for Marsh McLennan. Prior to her appointment as Chief People Officer in January 2021, Ms. Fernandez held positions within Marsh McLennan for 15 years, most recently Deputy CHRO, CHRO of Guy Carpenter, and HR leadership roles at Mercer, including North America HR Leader, Global HR Leader for the Career business and Chief of Staff in the Office of the CEO. Before joining Marsh McLennan, Ms. Fernandez worked in investment banking at Goldman Sachs and Bank of America. She began her career as a consultant with PricewaterhouseCoopers. John Jones, age 53, is Chief Marketing and Communications Officer of Marsh McLennan. Previously, he served as Chief Marketing and Communications Officer of Marsh from 2018 to 2022. Mr. Jones joined Marsh in 2016 as Senior Vice President of Business Planning, leading strategic planning and global growth initiatives. Prior to that, Mr. Jones was senior vice president of commercial marketing and strategy for AIG and has more than 25 years of marketing, communications and strategy experience. Dean Klisura, age 61, is President and Chief Executive Officer of Guy Carpenter and serves as Vice Chair of Marsh McLennan. Prior to assuming this role in January 2022, he was President of Guy Carpenter, overseeing the North America, International, Specialty and Global Analytics & Advisory business units. Prior to joining Guy Carpenter, Mr. Klisura was President of Marsh Global Placement and Advisory Services, leading property and casualty placement activities globally, as well as leading Bowring Marsh, the Insurer Consulting Group, and Marsh Advisory. He joined Marsh in 1993 and held several key global leadership roles including President of Global Specialties. Mark McGivney, age 57, is Chief Financial Officer of Marsh McLennan. Prior to assuming this role in January 2016, Mr. McGivney held a number of senior financial management positions since joining the Company in 2007. Most recently he was Senior Vice President, Corporate Finance of Marsh McLennan, and was responsible for leading and directing the Company's Corporate Development, Treasury and Investor Relations functions from 2014 until 2016. Prior to that, he served as Chief Financial Officer of Marsh, and Chief Financial Officer and Chief Operating Officer of Mercer. His prior experience includes senior positions at The Hanover Insurance Group, including serving as Senior Vice President of Finance, Treasurer, and Chief Financial Officer of the Property & Casualty business, and investment banking positions at Merrill Lynch and PricewaterhouseCoopers. 11

Martin South, age 60, is President and Chief Executive Officer of Marsh, a position he assumed in January 2022, and oversees all of Marsh's businesses and operations globally. He also serves as Vice Chair of Marsh McLennan. With more than 30 years in the insurance industry, Mr. South joined Marsh for the first time in 1985 with Bowring Marsh, a Marsh McLennan broking unit. His industry experience includes senior leadership roles at Zurich Financial Services, where he was a member of the Group Management Board, responsible for all of Zurich's operations outside of North America and Europe, and CEO of Zurich's London operations. Since rejoining Marsh in 2007, Mr. South has served as CEO of Marsh's Asia-Pacific region, CEO of Marsh U.K. and Ireland, CEO of Marsh Europe and CEO of Marsh U.S. and Canada. Nicholas Studer, age 51, is Chief Executive Officer of Oliver Wyman Group, a role he assumed in July of 2021. He also serves as Vice Chair of Marsh McLennan. From 2017 to 2021, Mr. Studer was the Managing Partner of the Consumer, Industrial and Services Practice Group, before becoming Managing Partner of Oliver Wyman in 2021. He has held many senior positions at Oliver Wyman including Managing Partner of the Financial Services Practice Group, Head of the European Finance and Risk Practice and Global head of the Corporate and Institutional Banking practice. He has over 25 years of experience consulting in the U.K., Continental Europe, and North America. Mr. Studer was a founding Director of TheCityUK, a founding advisory board member of the FICC Markets Standards Board and is a member of the Sustainable Markets Initiative. Pat Tomlinson, age 54, is President and Chief Executive Officer of Mercer and Vice Chair of Marsh McLennan, a position he assumed in April of 2024. He also serves as CEO of Marsh McLennan US and Canada, with responsibility for leading across businesses to address clients' increasingly interconnected risk, strategy and people challenges. From 2020 to 2024, Mr. Tomlinson served as Mercer's President of U.S. and Canada. Prior to that, he served as a U.S. and Canada business leader, leading the U.S. East Market, where he guided Mercer's Health, Wealth, and Career businesses to meet ever-changing client needs. Prior to joining Mercer in 2014, he spent 17 years with Aon and served as an officer in the U.S. Army. The Company is subject to the information reporting requirements of the Securities Exchange Act of 1934. In accordance with the Exchange Act, the Company files with, or furnishes to, the SEC its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and proxy statement for its annual shareholders' meeting. The Company makes these reports and any amendments to these reports available free of charge through its website, www.marshmclennan.com, as soon as reasonably practicable after they are filed with or furnished to the SEC. The SEC also maintains a website at www.sec.gov that contains reports, proxy and information statements and other information regarding issuers, like the Company, that file electronically with the SEC.