OMNICOM GROUP INC. (OMC) FY 2023 MD&A

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

(Dollars in tables in millions, except per share amounts.)

EXECUTIVE SUMMARY

Risks and Uncertainties

Global economic challenges, including geopolitical events, international hostilities, acts of terrorism, public health crises, high and sustained inflation in countries that comprise our major markets, high interest rates, and labor and supply chain issues could cause economic uncertainty and volatility. The impact of these issues on our business will vary by geographic market and discipline. We monitor economic conditions closely, as well as client revenue levels and other factors. In response to reductions in revenue, we can take actions to align our cost structure with changes in client demand and manage our working capital. However,

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there can be no assurance as to the effectiveness of our efforts to mitigate any impact of the current and future adverse economic conditions, reductions in client revenue, changes in client creditworthiness and other developments.

Our Business

We are a strategic holding company providing advertising, marketing and corporate communications services to many of the largest global companies. Our portfolio of companies includes our global networks, BBDO, DDB, TBWA, Omnicom Media Group, the DAS Group of Companies, and the Communications Consultancy Network. All our global networks integrate their service offerings with the Omnicom branded practice areas, including Omnicom Health Group, Omnicom Precision Marketing Group, Omnicom Commerce Group, Omnicom Advertising Collective, Omnicom Public Relations Group, and Omnicom Brand Consulting Group, as well as our Experiential businesses and Execution & Support businesses, which includes Omnicom Specialty Marketing Group.

As described in Note 5 to the consolidated financial statements, on January 2, 2024, we acquired Flywheel Digital, the digital commerce business of Ascential plc, for a net cash purchase price of approximately $845 million. Flywheel Digital provides services in e-commerce operations, media execution, and market intelligence. These services are complemented by a technology platform, which provides near real-time insights to clients. We expect Flywheel Digital to be a separate practice area within Omnicom, and we expect to integrate their services across our Advertising & Media, Precision Marketing and Commerce & Branding disciplines.

On a global, pan-regional, and local basis, our networks, practice areas, and agencies provide a comprehensive range of services in the following fundamental disciplines: Advertising & Media, Precision Marketing, Commerce & Branding, Experiential, Execution & Support, Public Relations, and Healthcare. Advertising & Media includes creative services across digital and traditional media, strategic media planning and buying, performance media, and data analytics services. Precision Marketing includes digital and direct marketing, digital transformation consulting and data and analytics. Commerce & Branding services include brand and product consulting, strategy and research, retail, and e-commerce. Experiential marketing services include live and digital events and experience design and execution. Execution & Support includes field marketing, digital and physical merchandising, point-of-sale, product placement, as well as other specialized marketing and custom communications services. Public Relations services include corporate communications, crisis management, public affairs, and media and media relations services. Healthcare includes corporate communications and advertising and media services to global healthcare and pharmaceutical companies. Our geographic markets include the Americas, which includes North America and Latin America, Europe, the Middle East and Africa (EMEA), and Asia-Pacific.

Our business model was built and continues to evolve around our clients. While our networks, practice areas and agencies operate under different names and frame their ideas in different disciplines, we organize our services around our clients. Our fundamental business principle is that our clients’ specific marketing requirements are the central focus of how we structure our service offerings and allocate our resources. This client-centric business model requires that multiple agencies within Omnicom collaborate in formal and informal virtual client networks utilizing our key client matrix organization structure. This collaboration allows us to cut across our internal organizational structures to execute our clients’ marketing requirements in a consistent and comprehensive manner. We use our client-centric approach to grow our business by expanding our service offerings to existing clients, moving into new markets and obtaining new clients. In addition, we pursue selective acquisitions of complementary companies with strong entrepreneurial management teams that currently serve or could serve our existing clients.

We believe generative AI will have a significant effect on how we provide services to our clients and how we enhance the productivity of our people. As with any new technology, we are working closely with our clients and technology partners to take advantage of the benefits of AI while being mindful of its limitations, risks, and privacy concerns. We are committed to responsible AI practices and collaboration to harness AI's potential, while evaluating related risks, such as ethical considerations, public perception and reputational concerns, intellectual property protection, regulatory compliance, privacy and data security concerns and our ability to effectively adopt this new emerging technology. The rapidly developing nature of AI technology makes it difficult to assess the full impact on our business at this time.

As a leading global advertising, marketing and corporate communications company, we operate in all major markets and have a large client base. For the year ended December 31, 2023, our largest client represented 3.0% of revenue, and our 100 largest clients, which represent many of the world's major marketers, represented approximately 55% of revenue. Our clients operate in virtually every sector of the global economy, with no one industry representing more than 17% of our revenue in 2023. Although our revenue is generally balanced between the United States and international markets and we have a large and diverse client base, we are not immune to general economic downturns.

Global economic conditions have a direct impact on our business and financial performance. Adverse global economic conditions pose a risk that our clients may reduce, postpone or cancel spending on advertising, marketing and corporate communications services, which would reduce the demand for our services. Revenue is typically lower in the first and third quarters and higher in the second and fourth quarters, reflecting client spending patterns during the year and additional project work that usually occurs in the fourth quarter.

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Certain global events targeted by major marketers for advertising expenditures, such as the FIFA World Cup and the Olympics, and certain national events, such as the U.S. election process, may affect our revenue period-over-period in certain businesses. Typically, these events do not have a significant impact on our revenue in any period.

Given our size and breadth, we manage our business by monitoring several financial indicators. The key performance indicators that we focus on are revenue growth and variability of operating expenses. We analyze revenue growth by reviewing the components and mix of the growth, including growth by principal regional market, practice area and marketing discipline, the impact from foreign currency exchange rate changes, growth from acquisitions, net of dispositions, and growth from our largest clients. Operating expenses are analyzed in the following categories: cost of services, selling, general and administrative expenses, or SG&A, and depreciation and amortization.

Financial Performance

Worldwide revenue in 2023 increased to $14,692.2 million compared to $14,289.1 million in 2022. Worldwide organic growth increased revenue $584.5 million, or 4.1%. Changes in foreign exchange rates reduced revenue $28.3 million, or 0.2%, and acquisition revenue, net of disposition revenue, reduced revenue $153.1 million, or 1.1%. The negative impact on revenue from acquisitions, net of dispositions, period to period was primarily due to dispositions in the Execution & Support discipline in the first and second quarters of 2023, including the sale of our research businesses, as well as the disposition of our businesses in Russia in the first quarter of 2022, partially offset by acquisitions in our Advertising & Media and Public Relations disciplines during the year.

The changes in worldwide revenue across our principal regional markets were: North America increased $95.0 million, Europe increased $256.4 million, Asia-Pacific increased $31.0 million and Latin America increased $57.8 million.

In North America for 2023 compared to the prior year period, increased organic revenue was driven primarily by the performance in the United States, especially in the Advertising & Media discipline, led by our media business, and our Precision Marketing, and Healthcare disciplines, partially offset by negative performance in our Experiential and Commerce & Branding disciplines, which faced difficult comparisons to the prior year, and our Execution & Support discipline.

In Europe, organic revenue for 2023 increased compared to 2022 across most countries of our major markets and in substantially all disciplines, especially our Advertising & Media discipline, led by our media business, and our Experiential discipline, partially offset by a decrease in our Public Relations discipline. Foreign currency changes increased revenue for 2023, primarily as a result of the strengthening of the Euro and British Pound against the U.S. Dollar period to period.

In Latin America, organic revenue for 2023 increased in all of our disciplines, led by our Advertising & Media discipline, and in substantially all countries in the region. The strengthening of most currencies, especially the Mexican Peso and Brazilian Real, partially offset by the weakening of the Argentine Peso against the U.S. Dollar, increased revenue in 2023 compared to 2022.

In Asia-Pacific, organic revenue for 2023 increased compared to 2022 across most major markets in the region, especially China, India, Australia, and Japan, and was led by our media business in our Advertising & Media discipline and our Experiential discipline. The organic revenue growth was partially offset by the weakening of certain foreign currencies against the U.S. Dollar period to period, especially the Australian Dollar, Japanese Yen, and Chinese Renminbi.

The changes in worldwide revenue in 2023, compared to 2022, in our fundamental disciplines were: Advertising & Media increased $457.3 million, Precision Marketing increased $46.9 million, Commerce & Branding increased $5.6 million, Experiential increased $15.8 million, Execution & Support decreased $189.1 million, Public Relations increased $26.2 million, and Healthcare increased $40.4 million.

A summary of our full year consolidated results of operations period-over-period is as follows:

1) Reconciliation of Non-GAAP Financial Measures on page 25.

2) For the year ended December 31, 2023, operating expenses included real estate operating lease impairment charges, severance, and other exit costs of $191.5 million ($145.5 million after tax) related to repositioning actions we took in the first and second quarters of 2023 to reduce our real estate requirements, rebalance our workforce, and consolidate operations in certain markets (see Note 13 to the consolidated financial

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statements). In addition, in the second quarter of 2023, we recorded a gain of $78.8 million ($55.9 million after tax) on disposition of certain of our research businesses in the Execution & Support discipline (see Note 14 to the consolidated financial statements). Included in the fourth quarter of 2023 within selling, general and administrative expenses are acquisition transaction costs of $14.5 million, primarily related to the purchase of Flywheel Digital in January 2024 (see Note 5 to the consolidated financial statements). The net aggregate impact of these items on Operating Income for the year ended December 31, 2023 was a reduction of $127.2 million ($102.6 million after tax). The net aggregate effect of these items for the year ended December 31, 2023 to diluted net income per share - Omnicom Group Inc. was a decrease of $0.50 (see Notes 13 and 14 to the consolidated financial statements).

3) For December 31, 2022, operating expenses included $113.4 million of charges recorded in the first quarter of 2022, as well as an additional net income tax charge of $4.8 million, related to the disposition of our businesses in Russia, which reduced net income - Omnicom Group Inc. by $118.2 million and diluted net income per share - Omnicom Group Inc. by $0.57 (see Note 15 to the consolidated financial statements).

CRITICAL ACCOUNTING ESTIMATES

The following summary of our critical accounting policies provides a better understanding of our financial statements and the related discussion in this MD&A. We believe that the following policies may involve a higher degree of judgment and complexity in their application than most of our accounting policies and represent the critical accounting policies used in the preparation of our financial statements. Readers are encouraged to consider this summary together with our consolidated financial statements and the related notes, including Note 2, for a more complete understanding of the critical accounting policies discussed below.

Estimates

We prepare our financial statements in conformity with U.S. GAAP and are required to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. We use a fair value approach in testing our intangible assets, which primarily consist of goodwill, for impairment. Actual results could differ from those estimates and assumptions.

Acquisitions and Goodwill

We have made and expect to continue to make selective acquisitions. The evaluation of potential acquisitions is based on various factors, including specialized know-how, reputation, geographic coverage, competitive position and service offerings of the target businesses, as well as our experience and judgment.

Our acquisition strategy is focused on acquiring the expertise of an assembled workforce, and in some cases their associated technological capabilities and assets, in order to continue to build upon the core capabilities of our various strategic business platforms and agency brands through the expansion of their geographic reach or their service capabilities to better serve our clients. Additional key factors we consider include the competitive position and specialized know-how of the acquisition targets. Accordingly, as is typical in most service businesses, a substantial portion of the assets we acquire are intangible assets primarily consisting of the know-how of the personnel, which is treated as part of goodwill and is not required to be valued separately under U.S. GAAP. For each acquisition, we undertake a detailed review to identify other intangible assets that are required to be valued separately. A significant portion of the identifiable intangible assets acquired is derived from customer relationships, including the related customer contracts, as well as trade names. In valuing these identified intangible assets, we typically use an income approach and consider comparable market participant measurements.

In 2023, to better align with our internal financial processes, the date of our annual impairment test was changed from June 30 to May 1. We will continue to evaluate goodwill for impairment at least annually at May 1 and whenever events or circumstances indicate the carrying value may not be recoverable. Under FASB ASC Topic 350, Intangibles - Goodwill and Other, we have the option of either assessing qualitative factors to determine whether it is more-likely-than-not that the carrying value of our reporting units exceeds their respective fair value (Step 0) or proceeding directly to the quantitative goodwill impairment test. While there were no trigger events that required us to perform a quantitative test, we performed the annual quantitative impairment test and compared the fair value of each of our reporting units to its respective carrying value, including goodwill. We identified our regional reporting units as components of our operating segments, which are our six global agency networks. The regional reporting units and practice areas monitor performance and are responsible for the agencies in their region. The regional reporting units report to the segment managers and facilitate the administrative and logistical requirements of our key client matrix organization structure for delivering services to clients in their regions. We have concluded that for each of our operating segments, their regional reporting units have similar economic characteristics and should be aggregated for purposes of testing goodwill for impairment at the operating segment level. Our conclusion was based on a detailed analysis of the aggregation criteria set forth in FASB ASC Topic 280, Segment Reporting, and in FASB ASC Topic 350. Consistent with our fundamental business strategy, the agencies within our regional reporting units serve similar clients in similar industries, and in many cases the same clients. In addition, the agencies within our regional reporting units have similar economic characteristics, and the employees share similar skill sets. The main economic components of each agency are employee compensation and related costs, and direct service costs and occupancy and other costs, which include rent and occupancy costs, technology costs that are generally limited to personal computers, servers and off-the-shelf software and other overhead expenses. Finally, the expected benefits of our acquisitions are typically shared by multiple agencies in various regions as they work together to integrate the acquired business into our virtual client network strategy.

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Goodwill Impairment Review - Estimates and Assumptions

We use the following valuation methodologies to determine the fair value of our reporting units: (1) the income approach, which utilizes discounted expected future cash flows, (2) comparative market participant multiples for EBITDA (earnings before interest, taxes, depreciation and amortization) and (3) when available, consideration of recent and similar acquisition transactions.

In applying the income approach, we use estimates to derive the discounted expected cash flows (“DCF”) for each reporting unit that serves as the basis of our valuation. These estimates and assumptions include revenue growth and operating margin, EBITDA, tax rates, capital expenditures, weighted average cost of capital and related discount rates and expected long-term cash flow growth rates. All of these estimates and assumptions are affected by conditions specific to our businesses, economic conditions related to the industry we operate in, as well as conditions in the global economy. The assumptions that have the most significant effect on our valuations derived using a DCF methodology are: (1) the expected long-term growth rate of our reporting units' cash flows and (2) the weighted average cost of capital (“WACC”) for each reporting unit.

The assumptions used for the long-term growth rate and WACC in our evaluations:

Long-term growth rate represents our estimate of the long-term growth rate for our industry and the geographic markets we operate in. For the past ten years, the average historical revenue growth rate of our reporting units and the Average Nominal GDP, or NGDP, growth of the countries comprising the major markets that account for substantially all of our revenue, was approximately 3.5% and 4.4%, respectively. We considered this history when determining the long-term growth rates used in our annual impairment test at May 1, 2023. Included in the 10-year history are the full year 2020 results that reflected the negative impact of the COVID-19 pandemic on the global economy and our revenue. We believe marketing expenditures over the long term have a high correlation to NGDP. Based on our past performance, we also believe that our growth rate can exceed NGDP growth in the short-term, notwithstanding the current inflationary environment, in the markets we operate in, which are similar across our reporting units. Accordingly, for our annual test as of May 1, 2023, we used an estimated long-term growth rate of 3.5%.

When performing the annual impairment test as of May 1, 2023 and estimating the future cash flows of our reporting units, we considered the current macroeconomic environment, as well as recent industry and market specific conditions. In the first half of 2023, our organic revenue increase was 4.3%, which excluded our net disposition activity and the impact from changes in foreign exchange rates.

The WACC is comprised of: (1) a risk-free rate of return, (2) a business risk index ascribed to us and to companies in our industry comparable to our reporting units based on a market derived variable that measures the volatility of the share price of equity securities relative to the volatility of the overall equity market, (3) an equity risk premium that is based on the rate of return on equity of publicly traded companies with business characteristics comparable to our reporting units, and (4) a current after-tax market rate of return on debt of companies with business characteristics similar to our reporting units, each weighted by the relative market value percentages of our equity and debt.

Our six reporting units vary in size with respect to revenue and the amount of debt allocated to them. These differences drive variations in fair value among our reporting units. In addition, these differences as well as differences in book value, including goodwill, cause variations in the amount by which fair value exceeds book value among the reporting units. The goodwill balances and debt vary by reporting unit primarily because our three legacy agency networks were acquired at the formation of Omnicom and were accounted for as a pooling of interests that did not result in any additional debt or goodwill being recorded. The remaining three agency networks were built through a combination of internal growth and acquisitions that were accounted for using the acquisition method and as a result, they have a relatively higher amount of goodwill and debt. Finally, the allocation of goodwill when components are transferred between reporting units is based on relative fair value at the time of transfer.

Goodwill Impairment Review - Conclusion

Based on the results of our impairment test, we concluded that our goodwill at May 1, 2023 was not impaired, because the fair value of each of our reporting units was in excess of its respective net book value. For our reporting units with negative book value, we concluded that the fair value of their total assets was in excess of book value. The minimum decline in fair value that one of our reporting units would need to experience in order to fail the goodwill impairment test was approximately 53%. Notwithstanding our belief that the assumptions we used for WACC and long-term growth rate in our impairment testing were reasonable, we performed a sensitivity analysis for each reporting unit. The results of this sensitivity analysis on our impairment test as of May 1, 2023 revealed that if the WACC increased by 1% and/or the long-term growth rate decreased by 1%, the fair value of each of our reporting units would continue to be in excess of its respective net book value and would pass the impairment test.

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We will continue to perform our impairment test each year at May 1, unless events or circumstances trigger the need for an interim impairment test. There were no events through December 31, 2023 that would change our impairment assessment. The estimates used in our goodwill impairment test do not constitute forecasts or projections of future results of operations, but rather are estimates and assumptions based on historical results and assessments of macroeconomic factors affecting our reporting units as of the valuation date. We believe that our estimates and assumptions are reasonable, but they are subject to change from period to period. Actual results of operations and other factors will likely differ from the estimates used in our discounted cash flow valuation, and it is possible that differences could be significant. A change in the estimates we use could result in a decline in the estimated fair value of one or more of our reporting units from the amounts derived as of our latest valuation and could cause us to fail our goodwill impairment test if the estimated fair value for the reporting unit is less than the carrying value of the net assets of the reporting unit, including its goodwill. A large decline in estimated fair value of a reporting unit could result in a non-cash impairment charge and may have an adverse effect on our results of operations and financial position. Additional information about acquisitions and goodwill appears in Notes 2, 5 and 6 to the consolidated financial statements.

Revenue Recognition

Revenue is recognized when a customer obtains control and receives the benefit of the promised goods or services (the performance obligation) in an amount that reflects the consideration we expect to receive in exchange for those goods or services (the transaction price). We measure revenue by estimating the transaction price based on the consideration specified in the client arrangement. Revenue is recognized as the performance obligations are satisfied. Our revenue is primarily derived from the planning and execution of advertising communications and marketing services in the following fundamental disciplines: Advertising & Media, Precision Marketing, Commerce & Branding, Experiential, Execution & Support, Public Relations and Healthcare. Our client contracts are primarily fees for service on a rate per hour or per project basis. Revenue is recorded net of sales, use and value added taxes.

Performance Obligations. In substantially all our disciplines, the performance obligation is to provide advisory and consulting services at an agreed-upon level of effort to accomplish the specified engagement. Our client contracts are comprised of diverse arrangements involving fees based on any one or a combination of the following: an agreed fee or rate per hour for the level of effort expended by our employees; commissions based on the client’s spending for media purchased from third parties; qualitative or quantitative incentive provisions specified in the contract; and reimbursement for third-party costs that we are required to include in revenue when we control the vendor services related to such costs and we act as principal. The transaction price of a contract is allocated to each distinct performance obligation based on its relative stand-alone selling price and is recognized as revenue when, or as, the customer receives the benefit of the performance obligation. Clients typically receive and consume the benefit of our services as they are performed. Substantially all our client contracts provide that we are compensated for services performed to date and allow for cancellation by either party on short notice, typically 90 days, without penalty.

Generally, our short-term contracts, which normally take 30 to 90 days to complete, are performed by a single agency and consist of a single performance obligation. As a result, we do not consider the underlying services as separate or distinct performance obligations because our services are highly interrelated, occur in close proximity, and the integration of the various components of a marketing message is essential to overall service. In certain of our long-term client contracts, which have a term of up to one year, the performance obligation is a stand-ready obligation, because we provide a constant level of similar services over the term of the contract. In other long-term contracts, when our services are not a stand-ready obligation, we consider our services distinct performance obligations and allocate the transaction price to each separate performance obligation based on its stand-alone selling price, including contracts for strategic media planning and buying services, which are considered to be multiple performance obligations, and we allocate the transaction price to each distinct service based on the staffing plan and the stand-alone selling price. In substantially all of our creative services contracts, we have distinct performance obligations for our services, including certain creative services contracts where we act as an agent and arrange, at the client’s direction, for third parties to perform studio production efforts.

Revenue Recognition Methods. A substantial portion of our revenue is recognized over time, as the services are performed, because the client receives and consumes the benefit of our performance throughout the contract period, or we create an asset with no alternative use and are contractually entitled to payment for our performance to date in the event the client terminates the contract for convenience. For these client contracts, other than when we have a stand-ready obligation to perform services, revenue is recognized over time using input measures that correspond to the level of staff effort expended to satisfy the performance obligation on a rate per hour or equivalent basis. For client contracts when we have a stand-ready obligation to perform services on an ongoing basis over the life of the contract, typically for periods up to one year, where the scope of these arrangements is broad and there are no significant gaps in performing the services, we recognize revenue using a time-based measure resulting in a straight-line revenue recognition. From time to time, there may be changes in the client service requirements during the term of a contract and the changes could be significant. These changes are typically negotiated as new contracts covering the additional requirements and the associated costs, as well as additional fees for the incremental work to be performed.

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To a lesser extent, for certain other contracts where our performance obligations are satisfied in phases, we recognize revenue over time using certain output measures based on the measurement of the value transferred to the customer, including milestones achieved. Where the transaction price or a portion of the transaction price is derived from commissions based on a percentage of purchased media from third parties, the performance obligation is not satisfied until the media is run and we have an enforceable contract providing a right to payment. Accordingly, revenue for commissions is recognized at a point in time, typically when the media is run, including when it is not subject to cancellation by the client or media vendor.

Principal vs. Agent. In substantially all our businesses, we incur third-party costs on behalf of clients, including direct costs and incidental, or out-of-pocket costs. Third-party direct costs incurred in connection with the creation and delivery of advertising or marketing communication services include, among others: purchased media, studio production services, specialized talent, including artists and other freelance labor, event marketing supplies, materials and services, promotional items, market research and third-party data and other related expenditures. Out-of-pocket costs include, among others: transportation, hotel, meals, shipping and telecommunication charges incurred by us in the course of providing our services. Billings related to out-of-pocket costs are included in revenue since we control the goods or services prior to delivery to the client.

However, the inclusion of billings related to third-party direct costs in revenue depends on whether we act as a principal or as an agent in the client arrangement. In most of our businesses, including advertising, which also includes studio production efforts and media planning and buying services, public relations, healthcare advertising, precision marketing, commerce and branding, we act as an agent and arrange, at the client’s direction, for third parties to perform certain services. In these cases, we do not control the goods or services prior to the transfer to the client. As a result, revenue is recorded net of these costs, equal to the amount retained for our fee or commission.

In certain businesses, we may act as principal when contracting for third-party services on behalf of our clients. In our experiential business and most of our execution and support businesses, including field marketing and certain specialty marketing businesses, we act as principal because we control the specified goods or services before they are transferred to the client and we are responsible for providing the specified goods or services, or we are responsible for directing and integrating third-party vendors to fulfill our performance obligation at the agreed upon contractual price. In such arrangements, we also take pricing risk under the terms of the client contract. In certain specialty media buying businesses, we act as principal when we control the buying process for the purchase of the media and contract directly with the media vendor. In these arrangements, we assume the pricing risk under the terms of the client contract. When we act as principal, we include billable amounts related to third-party costs in the transaction price and record revenue over time at the gross amount billed, including out-of-pocket costs, consistent with the manner that we recognize revenue for the underlying services contract. However, in media buying contracts where we act as principal, we recognize revenue at a point in time, typically when the media is run, including when it is not subject to cancellation by the client or media vendor.

Variable Consideration. Some of our client arrangements include variable consideration provisions, which include performance incentives, tiered commission structures and vendor rebates in certain markets outside of the United States. Variable consideration is estimated and included in total consideration at contract inception based on either the expected value method or the most likely outcome method. These estimates are based on historical award experience, anticipated performance and other factors known at the time. Performance incentives are typically recognized in revenue over time. Variable consideration for our media businesses in certain international markets includes rebate revenue and is recognized when it is probable that the media will be run, including when it is not subject to cancellation by the client. In addition, when we receive rebates or credits from vendors for transactions entered into on behalf of clients, they are remitted to the clients in accordance with contractual requirements or retained by us based on the terms of the client contract or local law. Amounts passed on to clients are recorded as a liability and amounts retained by us are recorded as revenue when earned, typically when the media is run.

NEW ACCOUNTING STANDARDS

See Note 24 to the consolidated financial statements for information on the adoption of new accounting standards and accounting standards not yet adopted.

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CONSOLIDATED RESULTS OF OPERATIONS

The period-over-period change in results of operations were:

1) For the year ended December 31, 2023, operating expenses included real estate operating lease impairment charges, severance, and other exit costs of $191.5 million ($145.5 million after tax) related to repositioning actions we took in the first and second quarters of 2023 to reduce our real estate requirements, rebalance our workforce, and consolidate operations in certain markets (see Note 13 to the consolidated financial statements). In addition, in the second quarter of 2023, we recorded a gain of $78.8 million ($55.9 million after tax) on disposition of certain of our research businesses in the Execution & Support discipline (see Note 14 to the consolidated financial statements). Included in the fourth quarter of 2023 within selling, general and administrative expenses are acquisition transaction costs of $14.5 million, primarily related to the purchase of Flywheel Digital in January 2024 (see Note 5 to the consolidated financial statements). The net aggregate impact of these items on Operating Income for the year ended December 31, 2023 was a reduction of $127.2 million ($102.6 million after tax). The net aggregate effect of these items for the year ended December 31, 2023 to diluted net income per share - Omnicom Group Inc. was a decrease of $0.50 (see Notes 13 and 14 to the consolidated financial statements).

2) For the year ended December 31, 2022, operating expenses included $113.4 million of charges recorded in the first quarter of 2022, as well as an additional net income tax charge of $4.8 million, related to the disposition of our businesses in Russia, which reduced net income - Omnicom Group Inc. by $118.2 million and diluted net income per share - Omnicom Group Inc. by $0.57 (see Note 15 to the consolidated financial statements).

3) For the year ended December 31, 2021, operating expenses were favorably impacted by the $50.5 million gain recorded in connection with the disposition in the Advertising & Media discipline.

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Revenue

The components of period-over-period revenue change in the United States (“Domestic”) and the remainder of the world (“International”) were:

The components and percentages are calculated as follows:

•Foreign exchange rate impact is calculated by translating the current period’s local currency revenue using the prior period average exchange rates to derive current period constant currency revenue (in this case $14,720.5 million and $14,970.1 million for the Total column for December 31, 2023 and December 31, 2022, respectively). The foreign exchange impact is the difference between the current period revenue in U.S. Dollars and the current period constant currency revenue ($14,692.2 million less $14,720.5 million and $14,289.1 million less $14,970.1 million for the Total column for December 31, 2023 and December 31, 2022, respectively).

•Acquisition revenue is calculated as if the acquisition occurred twelve months prior to the acquisition date by aggregating the comparable prior period revenue of acquisitions through the acquisition date. As a result, acquisition revenue excludes the positive or negative difference between our current period revenue subsequent to the acquisition date and the comparable prior period revenue and the positive or negative growth after the acquisition is attributed to organic growth. Disposition revenue is calculated as if the disposition occurred twelve months prior to the disposition date by aggregating the comparable prior period revenue of dispositions through the disposition date. The acquisition revenue and disposition revenue amounts are netted in the table.

•Organic growth is calculated by subtracting the foreign exchange rate impact, and the acquisition revenue, net of disposition revenue components from total revenue growth.

•The percentage change is calculated by dividing the individual component amount by the prior period revenue base of that component ($14,289.1 million and $14,289.4 million for the Total column for December 31, 2023, and December 31, 2022, respectively).

Changes in the value of foreign currencies against the U.S. Dollar affect our results of operations and financial position. For the most part, because the revenue and expense of our foreign operations are both denominated in the same local currency, the economic impact on operating margin is minimized. Assuming exchange rates at February 1, 2024 remain unchanged, we expect the impact of changes in foreign exchange rates will be flat in the first quarter of 2024 and for the full year. Based on our acquisition and disposition activity to date, we expect that the net impact will increase revenue by 1.50% in the first quarter of 2024 and 2.0% for the full year.

Revenue by Discipline

To monitor the changing needs of our clients and to further expand the scope of our services to key clients, we monitor revenue across a broad range of disciplines and group them into the following categories: Advertising & Media, Precision Marketing, Commerce & Branding, Experiential, Execution & Support, Public Relations, and Healthcare.

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The period-over-period change in revenue and organic growth by discipline was:

Effective January 1, 2023, we realigned the classification of certain services primarily within our Commerce & Branding, Execution & Support, and Experiential disciplines, and prior year amounts have been reclassified.

In the normal course of business, our agencies both gain and lose business from clients each year due to a variety of factors. Under our client-centric approach, we seek to broaden our relationships with all of our clients. Our largest client represented 3.0% and 2.7% of revenue for 2023 and 2022, respectively. Our ten largest and 100 largest clients represented 20.2% and 54.5% of revenue for 2023, respectively, and 19.1% and 53.1% of revenue for 2022, respectively.

2023 v. 2022

The period-over-period change in worldwide revenue for 2023, in our fundamental disciplines was: Advertising & Media increased $457.3 million, Precision Marketing increased $46.9 million, Commerce & Branding increased $5.6 million, Experiential increased $15.8 million, Execution & Support decreased $189.1 million, Public Relations increased $26.2 million, and Healthcare increased $40.4 million. Organic revenue increased across substantially all of our disciplines, except for Public Relations, which faced a difficult comparison to the prior year, and Execution & Support. The impact of foreign exchange translation slightly reduced our revenue. The decrease in revenue from foreign exchange translation was primarily related to the weakening of several currencies against the U.S. Dollar, including the Australian Dollar, Canadian Dollar, Japanese Yen, and Chinese Renminbi, partially offset by the Euro and British Pound, which strengthened against the U.S. Dollar compared to the prior year. The negative impact on revenue from acquisitions, net of dispositions, period to period was primarily due to dispositions in the Execution & Support discipline in the first and second quarters of 2023, including the sale of our research businesses, as well as the disposition of our businesses in Russia in the first quarter of 2022, partially offset by acquisitions in our Advertising & Media and Public Relations disciplines during the year.

2022 v. 2021

The changes in worldwide revenue in 2022, compared to 2021, in our fundamental disciplines was: Advertising & Media decreased $532.3 million, Precision Marketing increased $221.4 million, Commerce & Branding increased $45.9 million, Experiential increased $99.6 million, Execution & Support decreased $46.0 million, Public Relations increased $154.5 million, and Healthcare increased $56.6 million. Organic revenue increased across all disciplines. The impact of foreign exchange translation decreased revenue period to period as substantially all foreign currencies weakened against the U.S. Dollar, especially the British Pound and the Euro. The decrease in revenue in our Advertising & Media discipline period to period was primarily the result of the disposition of our businesses in Russia.

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Revenue by Geography

The period-over-period change in revenue and organic growth in our geographic markets was:

The period-over-period change in worldwide revenue across our geographic markets for 2023 was: North America increased $95.0 million, or 1.2%, Latin America increased $57.8 million, or 17.6%, Europe increased $256.4 million, or 6.4%, the Middle East and Africa decreased $37.1 million, or 10.7%, and Asia-Pacific increased $31.0 million, or 1.8%. Organic revenue for 2023 increased across most countries within our major markets.

The period-over-period change in worldwide revenue across our geographic markets for 2022 was: North America increased $146.3 million, or 1.9%, Latin America increased $32.9 million, or 11.1%, Europe decreased $209.1 million, or 5.0%, the Middle East and Africa increased $79.1 million, or 29.6%, and Asia-Pacific decreased $49.5 million, or 2.8%. Organic revenue for 2022 increased across all countries within our major markets.

North America

2023 vs. 2022

In North America for 2023 compared to the prior year period, increased organic revenue was driven primarily by the performance in the United States, especially in the Advertising & Media discipline, led by our media business, and our Precision Marketing, and Healthcare disciplines, partially offset by negative performance in our Experiential and Commerce & Branding disciplines, which faced difficult comparisons to the prior year, and our Execution & Support discipline. Acquisitions net of dispositions negatively impacted revenue, primarily as a result of dispositions in the Execution & Support discipline in the first and second quarters of 2023, including the sale of our research businesses, partially offset by acquisitions during the year in the Advertising & Media, Precision Marketing, and Public Relations disciplines.

2022 vs. 2021

In North America, organic revenue increased across all our disciplines for 2022 compared to 2021, especially in our Advertising & Media, Precision Marketing and Public Relations disciplines, and was substantially offset by a reduction in acquisition revenue, net of disposition revenue, primarily due to the disposition in the Advertising & Media discipline in the second quarter of 2021.

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Latin America

2023 vs. 2022

In Latin America, organic revenue for 2023 increased in all of our disciplines, led by our Advertising & Media discipline, and in substantially all countries in the region. The strengthening of most currencies, especially the Mexican Peso and Brazilian Real, partially offset by the weakening of the Argentine Peso against the U.S. Dollar, increased revenue in 2023 compared to 2022.

2022 vs. 2021

In Latin America, organic revenue for 2022, increased in most countries in the region, especially Brazil and Colombia. The increase in organic revenue was partially offset by negative performance in Mexico and the weakening of most currencies in the region against the U.S. Dollar.

EMEA

2023 vs. 2022

Europe

In Europe, organic revenue for 2023 increased compared to 2022 across most countries of our major markets and in substantially all disciplines, especially our Advertising & Media discipline, led by our media business, and our Experiential discipline, partially offset by a decrease in our Public Relations discipline. Foreign currency changes increased revenue for 2023, primarily as a result of the strengthening of the Euro and British Pound against the U.S. Dollar period to period. Acquisition revenue, net of disposition revenue, reduced revenue compared to the prior year, primarily due to the disposition of our businesses in Russia in the first quarter of 2022 and the disposition of certain businesses, primarily our research businesses in the Execution & Support discipline in the second quarter of 2023. Total revenue in the U.K. increased 4.0% in 2023 to $1,587.3 million. Organic revenue growth period to period in the U.K. was 4.7%, with growth across most disciplines, led by our media business in our Advertising & Media discipline, partially offset by negative performance in our Precision Marketing and Public Relations disciplines. In Continental Europe, which includes the Euro Zone and the other European countries, organic growth period to period of 7.2% was led by Italy, France, and Germany across substantially all disciplines.

2022 vs. 2021

Europe

In Europe, organic revenue for 2022, increased in substantially all countries and in all disciplines, especially our Advertising & Media discipline, which was led by our media business, our Precision Marketing and Public Relations disciplines, and our Experiential discipline, as it continued to recover from the impact of the pandemic. The increase in organic revenue was offset by the weakening of substantially all foreign currencies against the U.S. Dollar, especially the British Pound and the Euro, as well as the disposition of our businesses in Russia in the first quarter of 2022.

Middle East and Africa 2023 vs. 2022 vs. 2021

In the Middle East and Africa for 2023, organic revenue decreased compared to 2022, primarily as a result of our Experiential discipline, which faced difficult comparisons in the region, partially offset by our Advertising & Media discipline. For 2023, the weakening of certain currencies in the region against the U.S. Dollar also decreased revenue period to period. For 2022 as compared to 2021, the increase in organic revenue was primarily related to the FIFA World Cup in the fourth quarter of 2022.

Asia-Pacific

2023 vs. 2022

In Asia-Pacific, organic revenue for 2023 increased compared to 2022 across most major markets in the region, especially China, India, Australia, and Japan, and was led by our media business in our Advertising & Media discipline and our Experiential discipline. The organic revenue growth was partially offset by the weakening of certain foreign currencies against the U.S. Dollar period to period, especially the Australian Dollar, Japanese Yen, and Chinese Renminbi.

2022 vs. 2021

In Asia-Pacific, organic revenue increased in most disciplines for 2022 compared to 2021, especially our Advertising & Media discipline, which was led by our media business, and in most of our major markets in the region, particularly Australia, India, Japan, and Korea. The increase in organic revenue was offset by the weakening of all currencies in the region against the U.S. Dollar and negative performance in our Experiential discipline, primarily caused by prolonged COVID-19 lockdowns in China.

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Revenue by Industry

Revenue by type of client industry sector was:

Operating Expenses

The period-over-period change in operating expenses was:

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We measure cost of services in two distinct categories: salary and service costs and occupancy and other costs. As a service business, salary and service costs make up the significant portion of our operating expenses and substantially all these costs comprise the essential components directly linked to the delivery of our services. Salary and service costs include employee compensation and benefits, freelance labor, third-party service costs, and third-party incidental costs. Third-party service costs include vendor costs when we act as principal in providing services to our clients, and third-party incidental costs, which primarily consist of client-related travel and incidental out-of-pocket costs, which we bill back to the client directly at our cost and which we are required to include in revenue. Occupancy and other costs consist of the indirect costs related to the delivery of our services, including office rent and other occupancy costs, equipment rent, technology costs, general office expenses and other expenses. Adverse and beneficial fluctuations in foreign currencies from period to period impact our results of operations and financial position when we translate our financial statements from local foreign currencies to the U.S. Dollar. However, substantially all of our foreign operations transact business in their local currency, mitigating the impact of changes in foreign currency exchange rates on our operating margin percentage.

2023 vs. 2022

Operating expenses in 2023 increased 3.1% to $12,587.5 million from $12,205.8 million. Included in operating expenses for 2023 is the net impact of the gain on disposition of certain research businesses in our Execution & Support discipline, of $78.8 million, repositioning costs related to real estate and other exit charges and severance costs of $191.5 million (see Notes 13 and 14 to the consolidated financial statements) and acquisition transaction costs of $14.5 million, primarily related to the Flywheel Digital acquisition that closed in January 2024.

The changes in our operating expenses period-over-period from foreign currency translation decreased slightly, in line with the percentage decrease in revenue from 2023 and 2022.

2022 vs. 2021

Operating expenses in 2022 increased $114.3 million, or 0.9%, to $12,205.8 million year-over-year. Operating expenses for 2022 reflect charges arising from the effects of the war in Ukraine of $113.4 million. Operating expenses in 2021 were favorably impacted by the $50.5 million gain recorded in connection with the disposition in the Advertising & Media discipline. The weakening of most foreign currencies, especially the British Pound and Euro, against the U.S. Dollar reduced operating expenses for 2022 as compared to the prior year, which was in line with the percentage reduction from changes in foreign currencies on revenue.

Operating Expenses - Salary and Service Costs

2023 vs. 2022

Salary and service costs in 2023, which tend to fluctuate with changes in revenue, are comprised of salary and related costs, third-party service costs, and third-party incidental costs. Salary and service costs for 2023 compared to the prior year period increased $375.3 million, or 3.6%, to $10,701.2 million. Salary and related costs for 2023 increased $14.9 million, or 0.2%, to $7,212.8 million, primarily due to an increase in headcount. Headcount increased for 2023 as a result of organic growth and our acquisition activity; the increase was partially offset by the dispositions in our Execution & Support discipline in the first and

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second quarters of 2023. Third-party service costs for 2023 increased $332.4 million, or 12.9%, to $2,917.9 million due to changes in the mix of our businesses period to period, and were less impacted by the effects of our disposition activity during the year. Third-party incidental costs for 2023 increased $28.0 million, or 5.2%, to $570.5 million.

2022 vs. 2021

Salary and service costs in 2022, decreased $76.1 million, compared to 2021, reflecting a decrease in third-party service costs of $393.6 million, partially offset by an increase in third-party incidental costs of $90.6 million and an increase in salary and related service costs of $226.9 million. Third-party service costs decreased during the year primarily due to the disposition in the Advertising & Media discipline in the second quarter of 2021 and the disposition of our businesses in Russia in the first quarter of 2022. The increase in salary and related service costs primarily resulted from the increase in organic revenue and an increase in headcount, as well as an increase in travel and related costs, reflecting the post-pandemic return to the office of our workforce in most markets.

Operating Expenses - Occupancy and Other Costs

2023 vs. 2022

Occupancy and other costs for 2023, which are less directly linked to changes in revenue than salary and service costs, decreased slightly by $0.2 million year-over-year. Lower rent expense was partially offset by an increase in other occupancy costs in the year.

In connection with the transition to a flexible working environment, a hybrid model which allows for partial remote work, we took certain actions in the first quarter of 2023 to reduce and reposition our office lease portfolio and recorded a charge of $119.2 million, which included an $80.4 million non-cash impairment charge for operating lease right-of-use, or ROU, assets, $20.0 million for the write-off of the net book value of leasehold improvements at the affected locations, and $18.8 million of other lease obligations that will be paid in less than one year. Substantially all of the operating lease payments related to the ROU assets will be paid out over three years (see Note 13 to the consolidated financial statements).

2022 vs. 2021

Occupancy and other costs for 2022 increased $20.4 million year-over-year, primarily due to an increase in general office expenses and other costs, resulting from the return of our workforce to the office, partially offset by lower rent and other occupancy costs.

Operating Expenses - Selling, General & Administrative Expenses

SG&A expenses primarily consist of third-party marketing costs, professional fees, and compensation and benefits and occupancy and other costs of our corporate and executive offices, including group-wide finance and accounting, treasury, legal and governance, human resource oversight and similar costs. SG&A expenses for 2023 compared to 2022 increased by $15.2 million, primarily as a result of higher professional fees in connection with our acquisition activity during the year, including the Flywheel Digital acquisition, which closed in January 2024. SG&A expenses for 2022 compared to 2021 were flat.

Operating Income

2023 vs. 2022

Operating income for 2023 compared to 2022, increased $21.4 million to $2,104.7 million, and operating margin decreased to 14.3% from 14.6%. EBITA decreased $21.4 million to $2,185.0 million, and EBITA margin decreased to 14.9% from 15.1%. In 2023, the effect of the real estate and other repositioning costs, the gain on disposition of subsidiaries (see Notes 13 and 14 to the audited consolidated financial statements) and acquisition transaction costs, reduced both operating income and EBITA by $127.2 million, and reduced operating margin by 0.9% and EBITA margin by 0.8%. Operating income and EBITA in 2022 included a reduction of $113.4 million related to the war in Ukraine (see Note 15 to the consolidated financial statements), which decreased both operating margin and EBITA margin by 0.8%.

2022 vs. 2021

Operating income decreased $114.6 million to $2,083.3 million, operating margin decreased to 14.6% from 15.4%, and EBITA margin decreased to 15.1% from 15.9%. Operating profit, operating margin and EBITA margin for 2022 were negatively impacted by the $113.4 million charges arising from the effects of the war in Ukraine. Operating profit, operating margin and EBITA margin for 2021 were favorably impacted by the $50.5 million gain recorded in connection with dispositions in the Advertising & Media discipline.

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Net Interest Expense

2023 vs. 2022

Net interest expense in 2023 decreased $26.1 million year-over-year to $111.8 million. Interest expense increased by $9.9 million year-over-year, primarily related to non-cash interest charges on pension and other postemployment benefits (see Note 12 to the consolidated financial statements). Interest income in 2023 increased $36.0 million year-over-year to $106.7 million, primarily as a result of higher interest rates on cash balances. Looking ahead we expect net interest expense to increase in 2024, primarily as a result of lower average cash balances resulting from the funding of the Flywheel Digital purchase, with cash on-hand in January 2024, as well as the expectation of lower investing rates overall.

2022 vs. 2021

Net interest expense in 2022 decreased $71.2 million year-over-year to $137.9 million. Interest expense on debt decreased $21.9 million to $191.3 million in 2022 compared to 2021, primarily as a result of the benefit from the early redemption in May 2021 of all the outstanding $1.250 billion 3.625% Senior Notes due 2022, or 2022 Notes, which was partially offset by the issuance of the 2.60% Senior Notes due 2031 in May 2021, and the issuance of the £325 million 2.25% Senior Notes due 2033 in November 2021. Interest expense for 2021 includes a loss of $26.6 million on the early redemption of the 2022 Notes. Interest income in 2022 increased $43.4 million to $70.7 million year-over-year, primarily as a result of higher interest rates on our cash balances and our short-term investments.

Income Taxes

2023 vs. 2022

Our effective tax rate for 2023 decreased period-over-period to 26.3% from 28.1%. The higher effective tax rate for 2022 was predominantly the result of the non-deductibility of the $113.4 million charge recorded in the first quarter of 2022, arising from the effects of the war in Ukraine, as discussed below. Looking ahead to 2024 we expect our tax rate to increase to 27% primarily related to increases in the statutory rates of certain international markets.

The Inflation Reduction Act of 2022, or IRA, levies a 1% excise tax on net stock repurchases after December 31, 2022. The excise tax is recorded as a cost of acquiring treasury stock and is not material. Additionally, the IRA imposes a 15% corporate alternative minimum tax, or CAMT, for tax years beginning after December 31, 2022. The CAMT is not expected to have a material impact on our results of operations or financial position.

Numerous foreign jurisdictions have enacted or are in the process of enacting legislation to adopt a minimum effective tax rate described in the Global Anti-Base Erosion, or Pillar Two, model rules issued by the Organization for Economic Co-operation and Development, or OECD. A minimum effective tax rate of 15% would apply to multinational companies with consolidated revenue above €750 million.

Under the Pillar Two rules, a company would be required to determine a combined effective tax rate for all entities located in a jurisdiction. If the jurisdictional effective tax rate determined under the Pillar Two is less than 15%, a top-up tax will be due to bring the jurisdictional effective tax rate up to 15%. We are continuing to monitor the pending implementation of Pillar Two by individual countries and the potential effects of Pillar Two on our business. We do not expect the provisions effective in 2024 will have a materially adverse impact on our results of operations, financial position or cash flows.

2022 vs. 2021

Our effective tax rate for 2022 increased year-over-year to 28.1% from 24.6%. The higher effective tax rate for 2022 was predominantly the result of the non-deductibility of the $113.4 million charge recorded in the first quarter of 2022, arising from the effects of the war in Ukraine, as well as an additional increase in income tax expense of $4.8 million related to the disposition of our businesses in Russia. These charges were partially offset by the tax benefit arising from our share-based compensation awards. The effective tax rate for 2021 reflects a nominal tax applied to the book gain on the disposition in the Advertising & Media discipline resulting from the excess of tax over book basis and a reduction in income tax expense of $32.8 million, primarily related to the favorable settlements of uncertain tax positions in certain jurisdictions.

Net Income and Net Income Per Share - Omnicom Group, Inc.

2023 vs. 2022

Net income - Omnicom Group Inc. in 2023 increased $74.9 million to $1,391.4 million from $1,316.5 million. The year-over-year increase is due to the factors described above. Diluted net income per share - Omnicom Group Inc. increased to $6.91 in 2023, from $6.36 in 2022, due to the factors described above and the impact of the reduction in our weighted average common shares outstanding resulting from the repurchases of our common stock, net of shares issued for stock option exercises and the employee stock purchase plan during the year. For 2023, the net impact of the real estate repositioning costs, gain on disposition of subsidiaries and acquisition transaction costs reduced net income - Omnicom Group Inc. by $102.6 million and diluted net income per share - Omnicom Group Inc. by $0.50.

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2022 vs. 2021

Net income - Omnicom Group Inc. in 2022 decreased $91.3 million to $1,316.5 million from $1,407.8 million in 2021. The year-over-year decrease is due to the factors described above. Diluted net income per share - Omnicom Group Inc. decreased to $6.36 in 2022, compared to $6.53 in 2021, due to the factors described above, partially offset by the impact of the reduction in our weighted average common shares outstanding resulting from repurchases of our common stock, net of shares issued for restricted stock awards, stock option exercises and the employee stock purchase plan during the year. The impact of the after-tax charges arising from the effect of the war in Ukraine reduced net income - Omnicom Group Inc. for 2022 by $118.2 million and diluted net income per share - Omnicom Group Inc. by $0.57. The combined effect of the after-tax gain on the disposition in the Advertising & Media discipline and the loss on the early redemption of the 2022 Notes increased net income - Omnicom Group Inc. in 2021 by $31.0 million and increased diluted net income per share - Omnicom Group Inc. by $0.14.

NON-GAAP FINANCIAL MEASURES

We use certain non-GAAP financial measures in describing our performance. We use EBITA and EBITA Margin as additional operating performance measures, which exclude the non-cash amortization expense of intangible assets (primarily consisting of amortization of intangible assets arising from acquisitions). We define EBITA as earnings before interest, taxes, and amortization of intangible assets, and EBITA margin as EBITA divided by revenue. We believe EBITA and EBITA Margin are useful measures for investors to evaluate the performance of our business. Non-GAAP financial measures should not be considered in isolation from, or as a substitute for, financial information presented in compliance with U.S. GAAP. Non-GAAP financial measures reported by us may not be comparable to similarly titled amounts reported by other companies.

Reconciliation of Non-GAAP Financial Measures

The following table reconciles the U.S. GAAP financial measure of Net Income- Omnicom Group Inc. to EBITA and EBITA Margin:

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LIQUIDITY AND CAPITAL RESOURCES

Cash Sources and Requirements

Primary sources of short-term liquidity are net cash provided by operating activities and cash and cash equivalents. Additional liquidity sources include our $2.5 billion unsecured multi-currency revolving credit facility, or Credit Facility, the ability to issue up to $2 billion of U.S. Dollar denominated commercial paper and issue up to the equivalent of $500 million in British Pounds or Euro under a Euro commercial paper program, and access to the capital markets. In June 2023, we amended the Credit Facility to, among other things, extend its termination date to June 2, 2028, and transition the benchmark rate for U.S. Dollar denominated loans from LIBOR to the Secured Overnight Financing Rate, or SOFR. In addition, certain of our international subsidiaries have uncommitted credit lines that are guaranteed by Omnicom, aggregating $516.2 million. Our liquidity sources fund our non-discretionary cash requirements and our discretionary spending.

On January 3, 2024, we entered into a Delayed Draw Term Loan Agreement, or Term Loan Facility, that provides for a delayed-draw term loan up to an aggregate principal amount of $600 million (see Note 7 to the consolidated financial statements).

Working capital, which we define as current assets minus current liabilities, is our principal non-discretionary funding requirement. Our working capital cycle typically peaks during the second quarter of the year due to the timing of payments for incentive compensation, income taxes and contingent purchase price obligations. In addition, we have contractual obligations related to our long-term debt (principal and interest payments), recurring business operations, primarily related to lease obligations, and acquisition related obligations. Our principal discretionary cash spending includes dividend payments to common shareholders, capital expenditures, strategic acquisitions and repurchases of our common stock. On January 2, 2024, we acquired Flywheel Digital for a net cash purchase price of approximately $845 million (see Note 5 to the consolidated financial statements). We expect growth investment in Flywheel Digital and other technologies to increase our capital expenditures for 2024 compared to the prior year, which we will fund from operating cash flow.

Cash and cash equivalents increased $150.2 million from December 31, 2022. The increase was composed of:

Principal cash sources and principal cash uses are Non-GAAP liquidity measures. These amounts exclude changes in operating capital and other investing and financing activities. This presentation reflects the metrics used by us to assess our sources and uses of cash and was derived from our consolidated statement of cash flows. We believe that this presentation is meaningful to understand the primary sources and uses of our cash flow and the effect on our cash and cash equivalents. Non-GAAP liquidity measures should not be considered in isolation from, or as a substitute for, financial information presented in compliance with U.S. GAAP. Non-GAAP liquidity measures as reported by us may not be comparable to similarly titled amounts reported by other companies. Additional information regarding our cash flows can be found in our consolidated statement of cash flows and Note 16 to the consolidated financial statements.

At December 31, 2023, we have the following contractual obligations:

•Outstanding fixed-rate debt maturing at various times with an aggregate principal amount of $5.7 billion, of which $750 million is due in 2024. Depending on the conditions in the credit markets, we may refinance this debt, or we may use cash from operations and temporarily access our Credit Facility or Term Loan Facility, to repay this debt. Future interest payments on our debt total $716.7 million, of which $155.4 million is payable in 2024.

•The liability for our operating and finance lease payments is $1,492.5 million, of which $309.3 million is due in 2024.

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•The obligation for our defined benefit pension plans is $224.3 million, and the liability for our postemployment arrangements is $142.2 million. In 2023, we contributed $8.8 million to our defined benefit plans and paid $10.9 million for our postemployment arrangements. We do not expect these payments to increase significantly in 2024.

•The liability for contingent purchase price payments (earn-outs) is $229.5 million, of which $62.4 million is payable in 2024.

•The remaining balance for the transition tax on accumulated foreign earnings imposed by the Tax Cut and Jobs Act of 2017 is $68.9 million, of which $27.7 million is payable in 2024.

Based on past performance and current expectations, we believe that net cash provided by operating activities and cash and cash equivalents will be sufficient to meet our non-discretionary cash requirements for the next twelve months. In addition, and over the longer term, our Credit Facility and Term Loan Facility are available to fund our working capital and contractual obligations.

Cash Management

Our regional treasury centers in North America, Europe and Asia manage our cash and liquidity. Each day, operations with excess funds invest those funds with their regional treasury center. Likewise, operations that require funds borrow from their regional treasury center. Treasury centers with excess cash invest on a short-term basis with third parties, with maturities generally ranging from overnight to 90 days. Certain treasury centers have notional pooling arrangements that are used to manage their cash and set-off foreign exchange imbalances. The arrangements require each treasury center to have its own notional pool account and to maintain a notional positive account balance. Additionally, under the terms of the arrangement, set-off of foreign exchange positions are limited to the long and short positions within their own account. To the extent that our treasury centers require liquidity, they have the ability to issue up to a total of $2 billion of U.S. Dollar-denominated commercial paper and issue up to the equivalent of $500 million in British Pounds or Euro under a Euro commercial paper program, or borrow under the Credit Facility or the uncommitted credit lines. This process enables us to manage our debt more efficiently and utilize our cash more effectively, as well as manage our risk to foreign exchange rate imbalances. In countries where we either do not conduct treasury operations or it is not feasible for one of our treasury centers to fund net borrowing requirements on an intercompany basis, we arrange for local currency uncommitted credit lines. We have a policy governing counterparty credit risk with financial institutions that hold our cash and cash equivalents, and we have deposit limits for each institution. In countries where we conduct treasury operations, generally the counterparties are either branches or subsidiaries of institutions that are party to the Credit Facility. These institutions generally have credit ratings equal to or better than our credit ratings. In countries where we do not conduct treasury operations, all cash and cash equivalents are held by counterparties that meet specific minimum credit standards.

At December 31, 2023, our foreign subsidiaries held approximately $2.2 billion of our total cash and cash equivalents of $4.4 billion. Substantially all of the cash is available to us, net of any foreign withholding taxes payable upon repatriation to the United States.

Our net debt position as of December 31, 2023, which we define as total debt, including short-term debt, less cash and cash equivalents and short-term investments decreased $33.1 million to $1.2 billion from December 31, 2022. The decrease in net debt primarily resulted from an increase in cash from net cash provided by operating activities of $1.4 billion, and the proceeds from the disposition of subsidiaries and other investing activities of $190 million, which is included in net cash provided by investing activities. These increases were substantially offset by our discretionary spending of $1.5 billion, primarily consisting of our financing and acquisition activities. In addition, the net effect of foreign exchange rate changes on cash and cash equivalents and on our foreign currency denominated debt increased net debt by $21.1 million.

Net debt:

Net debt is a Non-GAAP liquidity measure. This presentation, together with the comparable U.S. GAAP liquidity measures, reflects one of the key metrics used by us to assess our cash management. Non-GAAP liquidity measures should not be considered in isolation from, or as a substitute for, financial information presented in compliance with U.S. GAAP. Non-GAAP liquidity measures as reported by us may not be comparable to similarly titled amounts reported by other companies.

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Debt Instruments and Related Covenants

Our 2.45% Senior Notes due 2030, 4.20% Senior Notes due 2030 and 2.60% Senior Notes due 2031 are senior unsecured obligations of Omnicom that rank equal in right of payment with all existing and future unsecured senior indebtedness.

Omnicom and its wholly owned finance subsidiary, Omnicom Capital Inc., or OCI, are co-obligors under the 3.65% Senior Notes due 2024 and the 3.60% Senior Notes due 2026. These notes are a joint and several liability of Omnicom and OCI, and Omnicom unconditionally guarantees OCI’s obligations with respect to the notes. OCI provides funding for our operations by incurring debt and lending the proceeds to our operating subsidiaries. OCI’s assets primarily consist of cash and cash equivalents and intercompany loans made to our operating subsidiaries, and the related interest receivable. There are no restrictions on the ability of OCI or Omnicom to obtain funds from our subsidiaries through dividends, loans or advances. Such notes are senior unsecured obligations that rank equal in right of payment with all existing and future unsecured senior indebtedness.

Omnicom and OCI have, jointly and severally, fully and unconditionally guaranteed the obligations of Omnicom Finance Holdings plc, or OFH, a U.K.-based wholly owned subsidiary of Omnicom, with respect to the €500 million 0.80% Senior Notes due 2027 and the €500 million 1.40% Senior Notes due 2031, collectively the Euro Notes. OFH’s assets consist of its investments in several wholly owned finance companies that function as treasury centers, providing funding for various operating companies in Europe, Australia and other countries in the Asia-Pacific region. The finance companies’ assets consist of cash and cash equivalents and intercompany loans that they make or have made to the operating companies in their respective regions and the related interest receivable. There are no restrictions on the ability of Omnicom, OCI or OFH to obtain funds from their subsidiaries through dividends, loans or advances. The Euro Notes and the related guarantees are senior unsecured obligations that rank equal in right of payment with all existing and future unsecured senior indebtedness of OFH and each of Omnicom and OCI, respectively.

Omnicom has fully and unconditionally guaranteed the obligations of Omnicom Capital Holdings plc, or OCH, a U.K.-based wholly owned subsidiary of Omnicom, with respect to the Sterling Notes. OCH’s assets consist of its investments in several wholly owned finance companies that function as treasury centers, providing funding for various operating companies in EMEA, Australia and other countries in the Asia-Pacific region. The finance companies’ assets consist of cash and cash equivalents and intercompany loans that they make or have made to the operating companies in their respective regions and the related interest receivable. There are no restrictions on the ability of Omnicom or OCH to obtain funds from their subsidiaries through dividends, loans or advances. The Sterling Notes and the related guarantee are senior unsecured obligations that rank equal in right of payment with all existing and future unsecured senior indebtedness of OCH and Omnicom, respectively.

The Credit Facility contains a financial covenant that requires us to maintain a Leverage Ratio of consolidated indebtedness to consolidated EBITDA (earnings before interest, taxes, depreciation, amortization and non-cash charges) of no more than 3.5 times for the most recently ended 12-month period. At December 31, 2023, we were in compliance with this covenant as our Leverage Ratio was 2.3 times. Neither the Credit Facility nor the Term Loan Facility limits our ability to declare or pay dividends or repurchase our common stock.

At December 31, 2023, our long-term and short-term debt was rated BBB+ and A2 by S&P and Baa1 and P2 by Moody's. Our access to the commercial paper market and the cost of these borrowings are affected by market conditions and our credit ratings. The long-term debt indentures, Credit Facility and Term Loan Facility do not contain provisions that require acceleration of cash payments in the event of a downgrade in our credit ratings.

Credit Markets and Availability of Credit

In light of the uncertainty of future economic conditions, we will continue to take actions available to us to respond to changing economic conditions and will continue to manage our discretionary expenditures. We will also continue to monitor and manage the level of credit made available to our clients. We believe that these actions, in addition to the availability of our Credit Facility and Term Loan Facility, are sufficient to fund our near-term working capital needs and our discretionary spending. Information regarding our Credit Facility and Term Loan Facility is provided in Note 7 to the consolidated financial statements.

We have the ability to fund our day-to-day liquidity, including working capital, by issuing commercial paper or borrowing under the Credit Facility and Term Loan Facility. During 2021 and 2022, we did not issue commercial paper. For the year ended December 31, 2023, the maximum amount of commercial paper issued was $200 million, the average amount outstanding was $5.1 million, the average days outstanding were 1.7 days, and the weighted average interest rate was 5.24%.

We may issue commercial paper to fund our day-to-day liquidity when needed. However, disruptions in the credit markets may lead to periods of illiquidity in the commercial paper market and higher credit spreads. To mitigate any disruption in the credit markets and to fund our liquidity, we may borrow under the Credit Facility and Term Loan Facility or the uncommitted credit lines or access the capital markets if favorable conditions exist. We will continue to monitor closely our liquidity and conditions in the credit markets. We cannot predict with any certainty the impact on us of any disruptions in the credit markets. In such circumstances, we may need to obtain additional financing to fund our day-to-day working capital requirements. Such additional financing may not be available on favorable terms, or at all.

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