Company: GLPG
Filing Date: 2025-03-28
Form Type: 6-K
Source: 0001193125-25-067161
Chunk: 1

Company: GALAPAGOS NV
Filing Date: 2025-03-28
Form: 6-K
Chunk 1
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| 99.11   |     | Instructions for voting by letter for holders of Ordinary Shares for the Annual Shareholders’ Meeting to be held on April 29, 2025                     |

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

| Date: March 28, 2025 |     | GALAPAGOS NV          
 (Registrant)          
 /s/ Annelies Denecker |
|:---------------------|:----|:----------------------|
|                      |     | Annelies Denecker     
 Company Secretary     |