Merck (MRK) risk factors, FY2024 10-K

Merck's FY2024 10-K, filed Feb 25, 2025, lists 29 risk factors in 3 groups. There is no earlier 10-K to compare against, so the most company-specific risks are listed below.

Risk factors listed
293 groups
Section length
11k wordsItem 1A

Merck's biggest risks in the FY2024 10-K

  • Merck depends heavily on patent exclusivity and its oncology portfolio, led by Keytruda, for revenue growth.

The risks most specific to Merck

  • Risks Related to the Company’s Business

    As the Company’s products lose market exclusivity, the Company generally experiences a significant and rapid loss of sales from those products

    Loss of patent protection causes a rapid sales drop as lower-priced generic versions of drugs become available.

  • Risks Related to the Company’s Business

    Key products generate a significant amount of the Company’s profits and cash flows, and any events that adversely affect the markets for its leading products could have a material adverse effect on the Company’s results of operations and financial condition

    The company relies heavily on key products like Keytruda, Gardasil/Gardasil 9, Lynparza, Bravecto, and Bridion for profits and cash flow.

  • Risks Related to the Company’s Business

    The Company faces continued pricing pressure with respect to its products

    Managed care organizations and government agencies exert ongoing global pricing pressure on pharmaceutical sales and profit margins.

  • Risks Related to the Company’s Business

    The Company may experience difficulties and delays in manufacturing certain of its products, including vaccines

    Manufacturing delays for products like Varivax and ProQuad are causing supply constraints in 2025.

  • Risks Related to the Company’s Business

    Negative events in the animal health industry could have a material adverse effect on future results of operations and financial condition of the Company or its Animal Health business

    Animal health product sales could drop due to diseases like Avian Influenza or African Swine Fever.

  • Risks Related to the Company’s Business

    Biologics and vaccines carry unique risks and uncertainties, which could have a material adverse effect on the Company’s future results of operations and financial condition

    Biologics and vaccines involve complex manufacturing and limited tissue or cell line supplies.

  • Risks Related to Technology

    The Company is increasing its use of artificial intelligence (AI) systems to automate processes, analyze data, and support decision-making which poses inherent risks

    The growing use of artificial intelligence introduces risks of operational disruptions or data loss from system flaws and biases.

All 29 risk factors

Headings as the filing states them, in filing order.

Risks Related to the Company’s Business

  1. 01The Company is dependent on its patent rights, and if its patent rights are invalidated or circumvented, its business could be materially adversely affected
  2. 02As the Company’s products lose market exclusivity, the Company generally experiences a significant and rapid loss of sales from those products
  3. 03Key products generate a significant amount of the Company’s profits and cash flows, and any events that adversely affect the markets for its leading products could have a material adverse effect on the Company’s results of operations and financial condition
  4. 04The Company’s research and development efforts may not succeed in developing commercially successful products and the Company may not be able to acquire commercially successful products in other ways; consequently, the Company may not be able to replace sales of successful products that lose patent protection
  5. 05The Company’s success is dependent on the successful development and marketing of new products, which are subject to substantial risks
  6. 06The Company faces continued pricing pressure with respect to its products
  7. 07Unfavorable or uncertain economic conditions, together with cost-reduction measures being taken by certain governments, could negatively affect the Company’s operating results
  8. 08The Company faces intense competition from both lower cost generic and biosimilar products and competitors’ products
  9. 09The Company has significant global operations, which expose it to additional risks, and any adverse event could have a material adverse effect on the Company’s results of operations and financial condition
  10. 10Climate change or legal, regulatory or market measures to address climate change may negatively affect the Company’s business, results of operations, cash flows and prospects
  11. 11Environmental, social and governance matters may impact the Company’s business and reputation
  12. 12Failure to attract and retain highly qualified personnel could affect the Company’s ability to successfully develop and commercialize products
  13. 13The Company may experience difficulties and delays in manufacturing certain of its products, including vaccines
  14. 14The Company may not be able to realize the expected benefits of its investments in emerging markets
  15. 15The Company is exposed to market risk from fluctuations in currency exchange rates and interest rates
  16. 16Pharmaceutical products can develop unexpected safety or efficacy concerns
  17. 17Reliance on third-party relationships and outsourcing arrangements could materially adversely affect the Company’s business
  18. 18Negative events in the animal health industry could have a material adverse effect on future results of operations and financial condition of the Company or its Animal Health business
  19. 19Biologics and vaccines carry unique risks and uncertainties, which could have a material adverse effect on the Company’s future results of operations and financial condition

Risks Relating to Government Regulation and Legal Proceedings

  1. 20The health care industry in the U.S. has been, and will continue to be, subject to increasing regulation and political action
  2. 21The Company’s products, including products in development, cannot be marketed unless the Company obtains and maintains regulatory approval
  3. 22Developments following regulatory approval may adversely affect sales of the Company’s products
  4. 23The Company is subject to a variety of U.S. and international laws and regulations
  5. 24The Company is subject to evolving and complex tax laws, which may result in additional liabilities that may affect results of operations and financial condition
  6. 25Adverse outcomes in current or future legal matters could negatively affect Merck’s business
  7. 26Product liability insurance for products may be limited, cost prohibitive or unavailable

Risks Related to Technology

  1. 27The Company is increasing its use of artificial intelligence (AI) systems to automate processes, analyze data, and support decision-making which poses inherent risks
  2. 28Social media and mobile messaging platforms present risks and challenges
  3. 29(Cautionary Statements Under the Private Securities Litigation Reform Act of 1995)

Other Merck 10-Ks

  • FY2025 10-K risk factors
    30 risks1 new9 reworded

    Keytruda sales concentration rose to 49% of total revenue. Gardasil faces severely lower demand in China. Bridion faces U.S. patent expiry in July 2026. AI governance risks now cite the EU AI Act and NIS2 Directive.

    Filed Feb 24, 2026

About this page

The headings are the filing's own. The one-line readings and the overview are automated and can be wrong: read Item 1A of the 10-K for the exact wording.