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Jim Kastenmayer
General Counsel at
ARRIVENT BIOPHARMA, INC.
Net worth: 256 590 $ as of 2026-06-29
Profile
James Kastenmayer currently works at Arrivent BioPharma, Inc., as Secretary & General Counsel.
Dr. Kastenmayer also formerly worked at AstraZeneca PLC, as Legal Director & Senior Patent Director from 2012 to 2019, Spyre Therapeutics, Inc., as Secretary & General Counsel from 2022 to 2023, MedImmune LLC, as IP Counsel, and Viela Bio, Inc., as Secretary, General Counsel & Senior Vice President from 2020 to 2021.
Dr. Kastenmayer received his doctorate degree from Michigan State University, undergraduate degree from the University of Virginia, and graduate degree from Georgetown University Law Center.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-02-01 | 7,386 ( 0.02% ) | 256 590 $ | 2026-06-29 |
Jim Kastenmayer active positions
| Companies | Position | Start |
|---|---|---|
| ARRIVENT BIOPHARMA, INC. | General Counsel | 2023-08-31 |
Former positions of Jim Kastenmayer
| Companies | Position | End |
|---|---|---|
| SPYRE THERAPEUTICS, INC. | Chief Executive Officer | 2022-11-28 |
| VIELA BIO, INC. | General Counsel | 2021-02-28 |
| ASTRAZENECA PLC | General Counsel | 2019-11-30 |
MedImmune LLC
 MedImmune LLC Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company | Corporate Officer/Principal | - |
Training of Jim Kastenmayer
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
53
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
MedImmune LLC
MedImmune LLC Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company | Health Technology |
AstraZeneca PLC
 AstraZeneca PLC Pharmaceuticals: MajorHealth Technology Manufactures pharmaceutical products | Health Technology |
Spyre Therapeutics, Inc.
 Spyre Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage biotechnology company | Health Technology |
Michigan State University
 Michigan State University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Virginia
 University of Virginia Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Georgetown University Law Center
 Georgetown University Law Center Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Viela Bio, Inc.
 Viela Bio, Inc. Pharmaceuticals: MajorHealth Technology Operates as clinical-stage biotechnology company that develops treatments for inflammation and autoimmune diseases | Health Technology |
Arrivent BioPharma, Inc.
 Arrivent BioPharma, Inc. Pharmaceuticals: OtherHealth Technology Engages in development and commercialization of cancer medicines | Health Technology |
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