Organon & Co.

Non-GAAP Financial Measures

This proxy contains “non-GAAP financial measures,” which are financial measures that either exclude or include amounts that are not excluded or included in the most directly comparable measures calculated and presented in accordance with U.S. generally accepted accounting principles (“GAAP”). Specifically, the Company makes use of the non-GAAP financial measures Adjusted EBITDA, Adjusted Net Income, and Adjusted diluted EPS, which are not recognized terms under GAAP and are presented only as a supplement to the Company’s GAAP financial statements. This proxy also provides certain measures that exclude the impact of foreign exchange. We calculate foreign exchange by converting our current-period local currency financial results using the prior period average currency rates and comparing these adjusted amounts to our current-period results. The Company believes that these non-GAAP financial measures help to enhance an understanding of the Company’s financial performance. However, the presentation of these measures has limitations as an analytical tool and should not be considered in isolation, or as a substitute for the Company’s results as reported under GAAP. Because not all companies use identical calculations, the presentations of these non-GAAP measures may not be comparable to other similarly titled measures of other companies.

The Company uses non-GAAP financial measures in its operational and financial decision making, and believes that it is useful to exclude certain items in order to focus on what it regards to be a more meaningful representation of the underlying operating performance of the business.

Revenues

Adjusted Revenue for AIP

Reconciliation of GAAP Net Income to Adjusted EBITDA

Appendix A

Reconciliation of GAAP Reported to Non-GAAP Adjusted Metrics