![Karen Massey](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Karen Massey
Chief Executive Officer at
ARGENX SE
Net worth: 4 M $ as of 31/05/2026
Profile
Karen Massey is currently Chief Executive Officer & Executive Director at argenx SE, starting in 2026.
Former positions include Senior Vice President-Product Development at Genentech, Inc. and Principal at Pfizer Inc. Education includes an undergraduate degree from The University of Sydney and an MBA from The Leonard N Stern School of Business.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
ARGENX SE 0.01% | 06/05/2026 | 4,392 ( 0.01% ) | 4 M $ | 31/05/2026 |
Karen Massey active positions
| Companies | Position | Start |
|---|---|---|
| ARGENX SE | Chief Executive Officer | 06/05/2026 |
Former positions of Karen Massey
| Companies | Position | End |
|---|---|---|
| PFIZER INC. | Corporate Officer/Principal | - |
Genentech, Inc.
 Genentech, Inc. BiotechnologyHealth Technology Operates as a biotechnology company that develops medicines for cancer peoples | Corporate Officer/Principal | - |
Training of Karen Massey
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
5
1st degree connections
5
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 5 |
|---|---|
Genentech, Inc.
Genentech, Inc. BiotechnologyHealth Technology Operates as a biotechnology company that develops medicines for cancer peoples | Health Technology |
Pfizer Inc.
 Pfizer Inc. Pharmaceuticals: MajorHealth Technology Engages in discovery, development, manufacturing, marketing, sale and distribution of biopharmaceutical products & ingredients | Health Technology |
The University of Sydney
 The University of Sydney Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
argenx SE
 argenx SE BiotechnologyHealth Technology Develops therapies and medicines for the treatment of autoimmune diseases | Health Technology |
The Leonard N Stern School of Business
 The Leonard N Stern School of Business Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
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- Karen Massey
