Merck(MRK) - 2021 Q4 - Annual Report

As filed with the Securities and Exchange Commission on February 25, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 _________________________________ FORM 10-K (MARK ONE) ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Fiscal Year Ended December 31, 2021 OR ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File No. 1-6571 ________________________ ...