Item 1. Business

Agreement to Acquire IPG

On December 8, 2024, Omnicom entered into an Agreement and Plan of Merger, or the Merger Agreement, by and among Omnicom, EXT Subsidiary Inc., a direct wholly owned subsidiary of Omnicom, or Merger Sub, and IPG, pursuant to which, subject to the terms and conditions of the Merger Agreement, Merger Sub will merge with and into IPG, or the Merger, with IPG surviving the Merger as a wholly owned subsidiary of Omnicom. Under the terms of the Merger Agreement, IPG shareholders will receive 0.344 shares of Omnicom common stock for each share of IPG common stock they own. Following the close of the Merger, Omnicom shareholders are expected to own approximately 60.6% of the combined company and IPG shareholders are expected to own approximately 39.4%, on a fully diluted basis. The completion of the Merger is subject to customary closing conditions, including required regulatory approvals and the approval of the stockholders of both Omnicom and IPG. If completed, the Merger is expected to have a material impact on our business, results of operations and financial condition.

Our Business

We are a strategic holding company providing data-inspired, creative marketing and sales solutions to many of the largest global companies. Our portfolio of companies includes our global networks, BBDO, DDB and TBWA, Omnicom Media Group, the DAS Group of Companies, and the Communications Consultancy Network. All of 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, Omnicom Brand Consulting Group, Flywheel Digital and Omnicom Production, a practice area that brings together Omnicom’s global production capabilities, as well as our Experiential businesses and Execution & Support businesses, which includes Omnicom Specialty Marketing Group. In August 2024, we announced the formation of Omnicom Advertising Group, or OAG, a new global organization that aligns the world-class creative networks BBDO, DDB and TBWA, as well as leading agencies within the Omnicom Advertising Collective. OAG began operations in January 2025.

We operate in a highly competitive industry and compete against other global, national and regional advertising, marketing and communications services companies, as well as technology, social media and professional services companies. The proliferation of media channels, including the rapid development and integration of interactive technologies and media, has fragmented consumer audiences targeted by our clients. These developments make it more complex for marketers to reach their target audiences in a cost-effective way, causing them to turn to Omnicom for a customized mix of marketing and communications services designed to optimize their total marketing expenditure.

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: Media & Advertising, Precision Marketing, Public Relations, Healthcare, Branding & Retail Commerce, Experiential, and Execution & Support. Media & Advertising includes creative services across digital and traditional media, strategic media planning and buying, performance media, data analytics services, and Omnicom Production. Precision Marketing includes digital and direct marketing, digital transformation consulting, e-commerce operations, media execution, market intelligence and data and analytics. 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. Branding & Retail Commerce services include brand and product consulting, strategy and research and retail marketing. Experiential marketing services include live and digital events and experience design and execution. Execution & Support includes field marketing, sales support, digital and physical merchandising, point-of-sale and product placement, as well as other specialized marketing and custom communications services. We operate in all major markets and have a large client base. Our geographic markets include the Americas, which includes North America and Latin America, Europe, the Middle East and Africa, or 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 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 fill gaps in our service delivery to our existing clients. In addition to

collaborating through our client service models, our agencies, practice areas and networks collaborate across internally developed technology platforms. Annalect and Omni, our proprietary data and analytics platforms, serve as the strategic resource for all of our agencies, practice areas and networks to share when developing client service strategies across our virtual networks. These platforms provide precision marketing and insights at scale across creative, media and other disciplines.

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 and 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.

Driven by our clients’ continuous demand for more effective and efficient marketing activities, we strive to provide an extensive range of marketing and communications services through various client-centric networks that are organized to meet specific client objectives.

Our service offerings include:

Certain business trends have impacted our business and industry. These trends include clients increasingly expanding the focus of their brand strategies from national markets to pan-regional and global markets and integrating traditional and non-traditional marketing channels, as well as utilizing new communications technologies and emerging digital platforms. As clients increase their demands for marketing effectiveness and efficiency, they tend to pursue a strategy that covers all consumer touch points in an economically effective manner. Our portfolio of businesses provides clients with an array of strategic options and we have structured our business around these trends. We believe that our key client matrix organization structure approach to collaboration and integration of our services and solutions have provided a competitive advantage to our business in the past and we expect this to continue over the medium and long term. Our key client matrix organization structure facilitates superior client management and allows for greater integration across our service platforms. Our overarching strategy is to continue to use our virtual client networks to grow our business relationships with our largest clients by serving them across our networks, disciplines and geographies.

We continually evaluate our portfolio of businesses to identify areas for investment and acquisition opportunities, as well as to identify non-strategic or underperforming businesses for disposition. In January 2024, we acquired Flywheel Digital, the digital commerce business of Ascential plc, for a net cash purchase price of approximately $845 million. For information about our acquisitions and dispositions, see Item 7, “MD&A - Acquisitions and Goodwill” and Notes 5, 14 and 15 to the consolidated financial statements. In each of the three years ended December 31, 2024, none of our acquisitions or dispositions, individually or in the aggregate, were material to our results of operations or financial condition.

The various components of our business, including revenue by discipline and geographic area, and material factors that affected us in the three years ended December 31, 2024, are discussed in Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”).

Our Clients

Our clients operate in virtually every sector of the global economy. In many cases, multiple agencies, practice areas or networks serve different brands, product groups or both within the same client. For example, in 2024, our largest client represented 2.7% of revenue and was served by approximately 155 of our agencies. Our 100 largest clients, which represent many of the major marketers, represented approximately 54% of revenue and were each served, on average, by approximately 55 of our agencies. Although we have a large and diverse client base, we are not immune to general economic downturns.

Government Regulations

We are subject to various federal, state and local laws and regulations in the countries in which we conduct business. Compliance with these laws and regulations in the normal course of business did not have a material effect on our business, results of operations or financial condition. Additional information regarding the impact of government regulations on our business is included in Item 1A, “Risk Factors - Legal and Regulatory Risks.”

Human Capital Resources and Environmental Sustainability Initiatives

Our employees are our most important assets. We believe a critical component of our success depends on the ability to attract, develop and retain key personnel. The skill sets of our workforce across our agencies and within each discipline share many similarities. Common to all is the ability to understand the client’s brand or product and its selling proposition and to develop a unique message to communicate the value of the brand or product to the client’s target audience, whether through traditional channels or digital platforms. Recognizing the importance of this core competency, we support and develop our employees through training and development programs that build and strengthen employees’ leadership and professional skills.

Human capital management strategies are developed collectively by senior management, including the management teams of our networks, practice areas, and agencies, and are overseen by our Board of Directors. We are committed to efforts that ensure that the workplace is equitable, ethical, fosters an inclusive work environment across our global workforce and respects human rights. Our social and human capital management priorities include, among other things, adopting codes of conduct and business ethics, providing competitive wages and benefits, comprehensive training programs and succession planning.

At December 31, 2024, we employed approximately 74,900 people worldwide, including 31,200 people in the Americas, 26,800 people in EMEA, and 16,900 people in Asia-Pacific. The United States is our largest employee base, where we employed approximately 21,900 people. None of our regular employees in the United States are represented by a labor union. In certain countries outside the United States, primarily in Europe, some employees are represented by work councils. See MD&A for the effect of salary and related costs on our results of operations.

Our environmental sustainability initiatives focus on emissions reductions through efficiency of office space, energy usage, travel and vendor engagement. In connection with our environmental sustainability efforts, we are a signatory to the UN Global Compact, a principle-based framework to encourage businesses and firms worldwide to adopt sustainable and socially responsible policies. We support the UN Sustainable Development Goals, a collection of global goals designed to be a blueprint to achieve a better, more inclusive and sustainable future. Our emissions reductions strategy, in line with the 1.5 degree Celsius climate scenario, was submitted to and approved by the Science Based Target initiative, or SBTi, which publicly audits companies on their emissions reduction efforts. Various regulatory bodies have proposed or enacted climate-related reporting requirements and similar proposals, including the SEC’s climate-related reporting proposal and California’s climate-related disclosure laws. The European Union’s Corporate Sustainability Reporting Directive has established disclosure requirements based on the European Sustainability Reporting Standards, or ESRS. However, reporting standards based on ESRS requirements are evolving for sustainability reporting, and regulations in other international markets are still evolving. We are monitoring the requirements in all the jurisdictions we operate and evaluating the impacts of those requirements and related reporting timelines.

Information About Our Executive Officers

At January 30, 2025, our executive officers were:

Mr. Simm was named President and Chief Operating Officer in November 2021 and previously served as Chief Executive Officer of Omnicom Media Group for more than 20 years. Mr. Januzzi was named Senior Vice President, General Counsel and Secretary in December 2022 and previously served as Senior Vice President & Deputy General Counsel - Corporate from May 2021 to December 2022 and as Associate General Counsel - Corporate Development & Finance from March 2016 to May 2021. All other executive officers have held their present positions for at least five years. Additional information about our directors and executive officers will appear in our definitive proxy statement, which is expected to be filed with the SEC in March 2025.

Available Information

We file annual, quarterly and current reports and any amendments to those reports, proxy statements and other information with the SEC. Documents we file with the SEC are available free of charge on our website at http://investor.omnicomgroup.com, as soon as reasonably practicable after such material is filed with the SEC. Any document we file with the SEC is available on the SEC’s website at www.sec.gov. The information included on or available through our website is not part of this or any other report we file with the SEC.