EcoR1 Capital, LLC - Jun 26, 2025 SCHEDULE 13D Report for Zymeworks Inc. Common Stock (ZYME)

Filing Manager
EcoR1 Capital, LLC
Reporting Manager
EcoR1 Capital, LLC
Security
Zymeworks Inc. Common Stock
Symbol
ZYME
Shares outstanding
74.8M shares
Disclosed Ownership
23M shares
Ownership
30.7%
Form type
SCHEDULE 13D
Date filed
6/27/2025, 06:14 PM
Date of event
Jun 26, 2025
Previous filing
Apr 8, 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
EcoR1 Capital, LLC 30.7% 23M 0 23M /s/ Oleg Nodelman Manager 0001587114
Oleg Nodelman 30.7% 23M 0 23M /s/ Oleg Nodelman Reporting person 0001454385
EcoR1 Capital Fund Qualified, L.P. 28.8% 21.6M 0 21.6M /s/ Oleg Nodelman Manager of the General Partner, EcoR1 Capital, LLC 0001598292