Company: GIFLF
Filing Date: 2025-03-10
Form Type: 6-K
Source: 0001104659-25-022046
Chunk: 0

Company: Grifols SA
Filing Date: 2025-03-10
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2025

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)</div>

Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.

<div align='center'>Form 20-F x Form 40-F ¨

Grifols, S.A.

TABLE OF CONTENTS</div>

<div align='center'>2</div>

|                                    | Grifols, S.A. |
| Avinguda de la Generalitat 152-158 |               |
| 08174 Sant Cugat del Vallès        |               |
| Barcelona - SPAIN                  |               |
| Tel. [34] 935 710 500              |               |
| Fax [34] 935 710 267               |               |
| www.grifols.com                    |               |

Pursuant to the provisions of Article
227 of Law 6/2023 of March 17, on Securities Markets and Investment Services, Grifols, S.A. (“Grifols” or the “Company”)
hereby informs about the following

<div align='center'>OTHER RELEVANT INFORMATION</div>

Grifols wishes to address certain information
published in a media outlet on 8 March 2025, specifically a front-page article titled “The CNMV reveals to the judge “continuous
fraud” among the top executives of Grifols”, which also continues today. Neither the article nor its title reflect the reality.

The article addresses certain statements
made in the Legality Opinion from the CNMV’s legal service, which was used to support the decision of the CNMV’s Executive Committee on
25 September 2024 to initiate administrative sanctioning proceedings against Grifols, S.A. and its Directors. The proceedings concern