Schedule 13D ownership disclosure
Zymeworks Inc
Common Stock · CUSIP: 98985Y108
Event date: 2025-11-16
Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.
- Filing-level shares
- Unavailable
- Percent of class
- Unavailable
- EcoR1 Capital, LLCReported CIK 0001587114
Shares: 22,970,388.00 · Class: 30.7%
- Oleg NodelmanReported CIK 0001454385
Shares: 22,970,388.00 · Class: 30.7%
- EcoR1 Capital Fund Qualified, L.P.Reported CIK 0001598292
Shares: 21,582,563.00 · Class: 28.8%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0000935836-25-000711
- Form type
- SCHEDULE 13D/A
- Filer
- EcoR1 Capital, LLC
- CIK
- CIK 1587114
- Filed
- Nov 19, 2025
- Reporting period
- Nov 16, 2025
- Description
- Schedule 13D beneficial ownership