Company: GLPG
Filing Date: 2025-02-12
Form Type: 6-K
Source: 0001193125-25-025186
Chunk: 0

Company: GALAPAGOS NV
Filing Date: 2025-02-12
Form: 6-K
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of February 2025

Commission File Number: 001-37384

### GALAPAGOS NV
(Translation of registrant’s name into English)

Generaal De Wittelaan L11 A3 2800 Mechelen, Belgium

(Address of principal executive office)

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

Form 20-F ☒ Form 40-F ☐

The information contained in this Report on Form 6-K,
including Exhibit 99.1 and 99.2, except for the quotes of Dr. Paul Stoffels and Thad Huston, included in Exhibit 99.2, is hereby incorporated by reference into the Company’s Registration Statements on Form
S-8 (File Nos. 333-204567, 333-208697, 333-211834, 333-215783, 333-218160, 333-225263, 333-231765, 333-249416, 333-260500, 333-268756, 333-275886 and
333-283361).

Entry Into A Separation Agreement On January 7, 2025, Galapagos NV (the “Company”) entered into a Separation Agreement (the “Agreement”) with Gilead Sciences, Inc. (“Gilead”) and Gilead Therapeutics A1 Unlimited Company (“A1” together with Gilead, the “Investors”), pursuant to which the Company shall transfer certain of its cash balance, assets and liabilities into a new entity (“SpinCo”) and the existing shareholders of the Company shall receive shares in SpinCo in the same proportion as their respective shareholdings in the Company (such transaction, the “Separation”), subject to the terms and conditions set forth therein. The proposed separation is subject to Belgian law and the satisfaction of customary conditions. In addition, the proposed separation is subject to the approval of our shareholders at an Extraordinary Shareholders’ Meeting. The forgoing summary of the Agreement does not purport to be complete and is qualified in its entirety by reference