Company: GIFLF
Filing Date: 2025-05-02
Form Type: 6-K
Source: 0001104659-25-043975
Chunk: 0

Company: Grifols SA
Filing Date: 2025-05-02
Form: 6-K
Chunk 0
---
<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 May 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.

| Form 20-F x | Form 40-F ¨ |

<div align='center'>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                    |

THIS DOCUMENT CONSTITUTES A TRANSLATION
INTO ENGLISH OF THE OFFICIAL SPANISH VERSION. IN CASE OF DISCREPANCIES, THE OFFICIAL SPANISH VERSION SHALL PREVAIL.

<div align='center'>GRIFOLS, S.A.

ORDINARY GENERAL SHAREHOLDERS' MEETING</div>

The Board of Directors has resolved to call the
shareholders of Grifols, S.A. (the “Company”) to the Ordinary General Shareholders' Meeting that will be held on first
call, at the Company's registered office, that is, Parque Empresarial Can Sant Joan, Avinguda de la Generalitat, 152-158, 08174 Sant Cugat
del Vallès, Barcelona, at 12:00 a.m. CET on June 4, 2025, and at the same place and time, on June 5, 2025, on second call.

The Board of Directors has also resolved to approve
the possibility to attend the Ordinary General Shareholders'