X0306 4 2021-06-02 1 0001821825 Organon & Co. ORG 0000310158 Merck & Co., Inc. 2000 GALLOPING HILL ROAD KENILWORTH NJ 07033 0 0 1 0 Common Stock 2021-06-02 4 J 0 253516000 D 0 D Pursuant to the Separation and Distribution Agreement, dated as of June 2, 2021, Merck & Co., Inc. ("Merck") distributed to the holders of its common stock by means of a pro-rata distribution without consideration an aggregate of 253,516,000 shares of common stock of Organon & Co. (the "Separation"). In connection with the Separation, the 100 shares of common stock of Organon & Co. held by Merck were reclassified into 253,516,000 shares of common stock of Organon & Co. Merck & Co., Inc. /s/ Kelly E.W. Grez, Deputy Corporate Secretary 2021-06-04