UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 OF THE SECURITIES EXCHANGE ACT OF 1934 For the month June 2022 (Commission File No. 001-35193) Grifols, S.A. (Translation of registrant's name into English) Avinguda de la Generalitat, 152-158 Parc de Negocis Can Sant Joan Sant Cugat del Valles 08174 Barcelona, Spain (Address of registrant's principal executive office) Indicate by check mark whether the registrant files ...