Merck said it closed an underwritten public offering of 8 series of Notes, including Floating Rate Notes due 2029, on December 4, 2025.

1. 01

   Merck said it closed an underwritten public offering of 8 series of Notes, including Floating Rate Notes due 2029, on December 4, 2025.

2. 02

   The company said it issued an aggregate principal amount of Floating Rate Notes due 2029 of $500,000,000, 3.850% Notes due 2029 of $750,000,000, 4.150% Notes due 2031 of $1,000,000,000 and 4.450% Notes due 2032 of $1,000,000,000.

3. 03

   Merck said it issued an aggregate principal amount of 4.750% Notes due 2035 of $1,500,000,000, 5.500% Notes due 2046 of $750,000,000, 5.550% Notes due 2055 of $1,500,000,000 and 5.700% Notes due 2065 of $1,000,000,000.

4. 04

   The company said the Notes were issued under its Registration Statement on Form S-3ASR (Registration No. 333-278066) and are being issued under an indenture dated January 6, 2010 between the company and U.S. Bank Trust National Association, as trustee.

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