Company: GIFLF
Filing Date: 2025-07-29
Form Type: 6-K
Source: 0001104659-25-071644
Chunk: 0

Company: Grifols SA
Filing Date: 2025-07-29
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 July 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
o

Grifols, S.A.

TABLE OF CONTENTS</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>

The Board of Directors in its meeting held on
28 July 2025 has approved the payment of an interim dividend on account of the 2025 profit of euro 0.15 per each share by which the Company's
share capital is represented. The details of such interim dividend are the following:

Last trading date:8 August 2025

Ex date: 11 August 2025

Record date: 12 August
2025

Payment date: 13 August 2025

ISIN Code:

| - | Class A shares: ES0171996087 |

| - | Class B shares: ES0171996095 |

Share name: Grifols, S.A.

Number of shares representing the share