Galapagos NV

Major Shareholding Notification • Sep 30, 2024

ESMA	FINANCIAL SERVICES AND MARKETS AUTHORITY	Form TR-1 BE PART I	Transparency notification
1) Status of the notification
	Final
2) Issuer
Identification number 0466-460-429	Name GALAPAGOS
3) Reason for the notification
	Update of a previous notification conceming financial instruments that are treated as voling securities
4) Notification by
	A parent undertaking or a controlling person					+
5) Persons subject to the notification requirement
	Name		Address (for legal entities)
	Oleg Nodelman EcoR1 Capital LLC		357 Tehema Street, Suite 3, San Francisco, CA 94103, United States of America
	6) Persons that dispose of voting rights (only to be filled in if art. 7 of the Law applies)
	Name		Address (for legal entities)
	Please continue entering the information in part II concerning the persons referred to in Sections 5 and 6	के साथ कि में बाद में बाद में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब में सब	Part II
7) Date on which the threshold is crossed
		20/09/2024 (DDMM/YYYY)
8) Threshold that is crossed (in %)
	10
	If the holding has fallen below the lowest threshold, you have the option of not entering any numbers in Section 10
9) Denominator
	65,897,071
	Please enter the denominator before filling in the data
10) Notified details
A) Voting rights	Previous notification		After the transaction
	# of voting rights		# of voting rights		% of voting rights
Holders of voting rights		Linked to securities	Not linked to the securities	Linked to securities	Not linked to the securities
Oleg Nodelman	0	0		0.00%
EcoR1 Capital LLC	838'388	6,939,043		10.53%
Subtotal	839,388	6,939,043		10.53%

TOTAL 6,939,043 10.53% Start with "groups" of holders. Add subtotals with 2, and then finish with the persons who are "alone".
For groups, start with the ultimate controlling natural person or le 0.00%

0

0

B) Equivalent financial instruments	After the transaction
Holders of equivalent financial instruments	Type of financial instrument	Expiration date	Exercise period or date	# of voting rights that may be acquired if the instrument is exercised	% of voting rights	Settlement
EcoR1 Capital LLC	ADRs			155,006	0.24%		+
	TOTAL			155,006	0.24%
8 The totals will be updated once you have clicked on
	TOTAL (A & B)			# of voting rights	% of voting rights
			CALCULATE	7,094,049	10.77%

11) Full chain of controlled undertakings through which the holding is effectively held, if applicable

EcoR1 Capital LLC is controlled by Oleg Nodelman.

12) In case of proxy voting for only one GM

			(DDMM)YYYY)
Holder	will cease to hold / will hold again	voting rights as of

13) Additional information

On September 2, 2224, Econ C and C. For Converted S. 27 888 A.D. 6 transpares, notfical or 12 2024 in ordinary shares, A. a result the nimer varies . A. a result the number o

Between September 11 and September 20, 2024, EcoR1 Capital LLC further acquired 225,787 ordinary shares and 154,709 ADRs.

Geoulder on the Porm are bents of Caplal Fun' Qualifed LP and EcoSt Capital Furd Lei, M. (n. b. b.) h. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. b. o exercises the voting rights of its entities at its discretion in the absence of specific instructions.

Done at Brussels
On	26/09/2024 (DD/MM/YYYY)
Name & capacity

	1
Signature

For security reasons, the unsigned form in xlsx format should be transmitted to trp.fin@fsma.be. You can do this manually OR if you have MS Outlook at your disposal via the "Save & Send" button.

In addition, a signed copy in PDF format should also be transmitted.