Organon & Co. (Exact name of registrant as specified in its charter) 46-4838035 (I.R.S. Employer Identification No.) Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes☐No☒Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements forthe past 90 days.Yes☒No☐Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).Yes☒No☐Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule12b-2 of the Exchange Act.: Large accelerated filer☒Non-accelerated filer☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new orrevised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued itsaudit report.☒If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.☐Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by The aggregate market value of the voting common equity held by non-affiliates of the registrant, computed by reference to the closing price at which theCommon Stock was sold as of the end of the second fiscal quarter ended June 30, 2024, was approximately $5.3billion.The number of shares of Common Stock outstanding as of the close of business on February25, 2025:257,950,149DOCUMENTS INCORPORATED BY REFERENCE The information required by Part III will be incorporated by reference from the Registrant’s definitive proxy statement for its 2025 Annual Meeting of Stockholders (the “2025 Proxy Statement”), which will be filed pursuant to Regulation 14A with the United States Securities and Exchange Commission(“SEC”) within 120 days after the end of the fiscal year to which this report relates. Table of Contents Part I Item 1. BusinessItem 1A. Risk FactorsItem 1B. Unresolved Staff CommentsItem 1C. CybersecurityItem 2. PropertiesItem 3. Legal ProceedingsItem 4. Mine Safety Disclosures Part IIItem 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity SecuritiesItem 6. [ Reserved ]Item 7. Management's Discussion and Analysis of Financial Condition and Results of OperationsItem 7A. Quantitative and Qualitative Disclosures About Market RiskItem 8. Financial Statements and Supplementary Data Item 9. Changes in and Disagreements With Accountants on Accounting and Financial DisclosuresItem 9A. Controls and ProceduresItem 9B. Other InformationItem 9C. Disclosure Regarding Foreign Jurisdiction that Prevent InspectionsPart III Item 10. Directors, Executive Officers and Corporate GovernanceItem 11. Executive CompensationItem 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder MattersItem 13. Certain Relationships and Related Transactions, and Director Independence Item 14. Principal Accounting Fees and Services Part IV Item 15. Exhibits, Financial Statement SchedulesItem 16. Form 10-K Summary Signatures The following notations in this Annual Report on Form 10-K (this “2024 Form 10-K”) have the meanings as set forth below:¹ Indicates, in this 2024 Form 10-K, brand names of products, which are not available in the United States. ² Indicates brand names of products that are trademarks not owned by Organon. Specific trademark ownership information is included in theExhibit Index at the end of this 2024 Form 10-K. PART IItem 1. Business Overview Organon & Co. (“Organon,” the “Company,” “we,” “our,” or “us”) is a global healthcare company with a primary focus on improving thehealth of women throughout their lives. We develop and deliver innovative health solutions through a