![Stephen Biggar](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>)
Stephen Biggar
Chairman at
ACADIA PHARMACEUTICALS INC.
Net worth: 2 M $ as of 30/05/2026
Profile
Dr. Stephen R. Biggar is an Independent Director at TScan Therapeutics, Inc., an Independent Director at Kiniksa Pharmaceuticals Ltd. and a Chairman at ACADIA Pharmaceuticals, Inc. He is on the Board of Directors at TScan Therapeutics, Inc., Kiniksa Pharmaceuticals Ltd. and Vivelix Pharmaceuticals, Ltd. Dr. Biggar was previously employed as an Independent Director by Synageva BioPharma Corp. and a Partner by Baker Bros. Advisors LP. He also served on the board at BioCryst Pharmaceuticals, Inc. and Synageva BioPharma Corp. /Old/. He received his undergraduate degree from the University of Rochester, a graduate degree from Stanford University and a doctorate degree from Stanford University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 23/02/2026 | 61,541 ( 0.04% ) | 1 M $ | 30/05/2026 | |
0.03% | 05/04/2026 | 12,546 ( 0.03% ) | 606 975 $ | 30/05/2026 |
| 30/03/2026 | 0 ( -.--% ) | - $ | 30/05/2026 |
Stephen Biggar active positions
| Companies | Position | Start |
|---|---|---|
| ACADIA PHARMACEUTICALS INC. | Chairman | 09/06/2016 |
| TSCAN THERAPEUTICS, INC. | Chairman | 11/06/2024 |
Kiniksa Pharmaceuticals Ltd.
 Kiniksa Pharmaceuticals Ltd. Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company that develops and delivers therapeutic medicines for patients suffering from cardiovascular diseases | Director/Board Member | 30/09/2015 |
Notch Therapeutics, Inc.
 Notch Therapeutics, Inc. Pharmaceuticals: OtherHealth Technology Develops cell therapies for the treatment of diseases | Director/Board Member | - |
Former positions of Stephen Biggar
| Companies | Position | End |
|---|---|---|
| SYNAGEVA BIOPHARMA CORP | Director/Board Member | 21/06/2015 |
Synageva BioPharma Corp. /Old/
 Synageva BioPharma Corp. /Old/ BiotechnologyHealth Technology Manufactures biopharmaceutical products | Director/Board Member | 03/11/2011 |
| BIOCRYST PHARMACEUTICALS, INC. | Director/Board Member | 09/10/2011 |
Vivelix Pharmaceuticals, Ltd.
 Vivelix Pharmaceuticals, Ltd. Pharmaceuticals: MajorHealth Technology Manufactures and sells pharmaceutical products | Director/Board Member | - |
Training of Stephen Biggar
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
59
1st degree connections
11
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 11 |
|---|---|
BioCryst Pharmaceuticals, Inc.
 BioCryst Pharmaceuticals, Inc. BiotechnologyHealth Technology Designs and develops oral small-molecule & injectable protein therapeutics | Health Technology |
Rochester Christian University
 Rochester Christian University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
ACADIA Pharmaceuticals, Inc.
 ACADIA Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceuticals drugs for treatment of central nervous system disorders | Health Technology |
Baker Bros. Advisors LP
 Baker Bros. Advisors LP Investment ManagersFinance BBA pursues a fundamentally driven approach to life sciences investing. The firm typically takes large, concentrated positions in the securities of life sciences companies with the potential for significant value creation over the long-term. They focus on public securities, but may, from time to time, recommend investments in private companies, life sciences and related healthcare intellectual property, royalty streams or other non-public investment opportunities. | Finance |
Synageva BioPharma Corp. /Old/
Synageva BioPharma Corp. /Old/ BiotechnologyHealth Technology Manufactures biopharmaceutical products | Health Technology |
Stanford University
 Stanford University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Synageva BioPharma Corp.
 Synageva BioPharma Corp. BiotechnologyHealth Technology Develops and manufactures biopharmaceutical products | Health Technology |
Kiniksa Pharmaceuticals Ltd.
Kiniksa Pharmaceuticals Ltd. Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company that develops and delivers therapeutic medicines for patients suffering from cardiovascular diseases | Health Technology |
Vivelix Pharmaceuticals, Ltd.
Vivelix Pharmaceuticals, Ltd. Pharmaceuticals: MajorHealth Technology Manufactures and sells pharmaceutical products | Health Technology |
TScan Therapeutics, Inc.
 TScan Therapeutics, Inc. BiotechnologyHealth Technology Develops T-cell therapies for cancer patients | Health Technology |
Notch Therapeutics, Inc.
Notch Therapeutics, Inc. Pharmaceuticals: OtherHealth Technology Develops cell therapies for the treatment of diseases | Health Technology |
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