Company: GIFLF
Filing Date: 2025-02-25
Form Type: 6-K
Source: 0001104659-25-016832
Chunk: 0

Company: Grifols SA
Filing Date: 2025-02-25
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 February 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 informs that at the Board of
Directors meeting that has taken place today, the following was unanimously resolved:

| · | Mr. Thomas Glanzmann, the Board's current Chairman, has announced that after 19 years of serving on the                                 
 Board, he will not seek reelection at the Annual General Shareholders' Meeting. However, he will remain in his current role as Chairman 
 until that time.                                                                                                                        |

| · | At the Annual General Shareholders' Meeting, the Board will propose reducing the number of Board members 
 from 13 to 12 and, thus, if approved, Mr. Thomas Glanzmann's seat will be cancelled.                     |

| · | Mr. Glanzmann's successor as non-executive