SCHEDULE Filed 2025-05-19 Event 2025-05-15 SEC 0001213900-25-045527 →

EcoR1 Capital, LLC → GALAPAGOS NV GLPGF

Stake: 11.84% Shares: 7,803,202 CUSIP: 36315X101 Class: Ordinary Shares, no par value

Item 4 — Purpose of Transaction

No amendment to this Item is being made.

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

4 13D/G filings on this issuer

3 other filings besides this one

Filer Track Record

9 filings by this filer

8 other filings in the data moat

Short Interest · settle 2026-03-31

DTC 999.99

169,485 shares short · +153.3% vs prior

Held by elite portfolio managers

2 holders · $22.51M

Greenlight CapitalPoint72 Asset Mgmt

Filed	Form	Filer	Stake	Shares
2025-01-10	SCHEDULE	GILEAD SCIENCES, INC.	29.90%	20,981,010	view →
2024-10-08	SC	EcoR1 Capital, LLC	—	—	view →
2019-08-29	SC	GILEAD SCIENCES INC	—	—	view →

Filed	Form	Issuer	Stake	Shares
2025-03-17	SCHEDULE	Zymeworks Inc. ZYME	24.20%	16,858,418	view →
2025-02-18	SCHEDULE	Zymeworks Inc. ZYME	22.80%	15,720,161	view →
2025-01-13	SCHEDULE	Zymeworks Inc. ZYME	22.40%	15,411,078	view →
2025-01-03	SCHEDULE	PROTHENA CORP PUBLIC LTD CO PRTA	21.50%	11,584,280	view →
2024-10-08	SC	GALAPAGOS NV GLPGF	—	—	view →
2022-01-14	SC	PROTHENA CORP PUBLIC LTD CO PRTA	—	—	view →
2021-05-11	SC	ANAPTYSBIO, INC ANABV	—	—	view →
2021-04-13	SC	ANAPTYSBIO, INC ANABV	—	—	view →

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