![Christopher Twomey](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>)
Christopher Twomey
Director/Board Member at
TANDEM DIABETES CARE, INC.
Net worth: 638 493 $ as of 2026-05-30
Profile
Mr. Christopher J.
Twomey, CPA, is an Independent Director at Bionano Genomics, Inc., an Independent Director at Tandem Diabetes Care, Inc. and a Co-Manager at Twomey Family Investments LLC.
He is on the Board of Directors at Bionano Genomics, Inc. and Tandem Diabetes Care, Inc. Mr. Twomey was previously employed as an Independent Director by Cadence Pharmaceuticals, Inc., a Chief Financial Officer & Senior Vice President by BioSite, Inc., a Chief Financial Officer & Senior VP-Finance by New Biosite, Inc., and an Audit Manager by Ernst & Young LLP.
He also served on the board at Senomyx, Inc. He received his undergraduate degree from the University of California, Santa Barbara.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-05-20 | 37,114 ( 0.05% ) | 638 361 $ | 2026-05-30 | |
| 2026-05-13 | 107 ( 0% ) | 133 $ | 2026-05-30 |
Christopher Twomey active positions
| Companies | Position | Start |
|---|---|---|
| TANDEM DIABETES CARE, INC. | Director/Board Member | 2013-06-30 |
| BIONANO GENOMICS, INC. | Director/Board Member | 2018-06-30 |
Twomey Family Investments LLC | Corporate Officer/Principal | - |
Former positions of Christopher Twomey
| Companies | Position | End |
|---|---|---|
| SENOMYX INC. | Director/Board Member | 2018-11-01 |
| CADENCE PHARMACEUTICALS, INC. | Director/Board Member | 2014-03-18 |
Biosite, Inc. (Massachusetts)
 Biosite, Inc. (Massachusetts) Part of Abbott Laboratories, Biosite, Inc. is a consulting firm founded by Kenneth F. Buechler. The company, based in MA, specializes in strategic alliances, business development, and M&A advisory services within the biopharmaceutical field. The company has extensive expertise in therapeutic antibodies & proteins, oncology, autoimmune & infectious diseases, diagnostics, and specialty pharmaceuticals. Biosite, Inc. has been retained by various clients, including MedinCell S.A., Medin Cell Corp., Inc. & Undisclosed Mexican generics company, Avid Bioservices, Chiome Bioscience, Pfizer Animal Health, CombiChem, Kaken Pharmaceutical Co., Ltd., MediLite Diagnostics, Molecular Research Institute (Mri), and Structural Bioinformatics Inc. | Director of Finance/CFO | 2007-05-31 |
Alere San Diego, Inc.
 Alere San Diego, Inc. Medical SpecialtiesHealth Technology Develops, manufactures and markets medical diagnostic instruments | Director of Finance/CFO | 2006-12-31 |
Ernst & Young LLP
 Ernst & Young LLP Miscellaneous Commercial ServicesCommercial Services Provides assurance, auditing, tax, legal, technology and consulting & managed services | Comptroller/Controller/Auditor | 1990-02-28 |
Training of Christopher Twomey
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
68
1st degree connections
9
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 9 |
|---|---|
Alere San Diego, Inc.
Alere San Diego, Inc. Medical SpecialtiesHealth Technology Develops, manufactures and markets medical diagnostic instruments | Health Technology |
Ernst & Young LLP
Ernst & Young LLP Miscellaneous Commercial ServicesCommercial Services Provides assurance, auditing, tax, legal, technology and consulting & managed services | Commercial Services |
Senomyx, Inc.
 Senomyx, Inc. Food: Specialty/CandyConsumer Non-Durables Discovers and develops novel flavors and taste modulators for the packaged food and beverage industry | Consumer Non-Durables |
Tandem Diabetes Care, Inc.
 Tandem Diabetes Care, Inc. Medical SpecialtiesHealth Technology Develops and manufactures medical devices for the treatment of diabetes | Health Technology |
University of California, Santa Barbara
 University of California, Santa Barbara Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Mallinckrodt Hospital Products, Inc.
 Mallinckrodt Hospital Products, Inc. Pharmaceuticals: MajorHealth Technology Manufactures pharmaceutical products | Health Technology |
Bionano Genomics, Inc.
 Bionano Genomics, Inc. BiotechnologyHealth Technology Develops technologies for analysis of large biological molecules | Health Technology |
Biosite, Inc. (Massachusetts)
Biosite, Inc. (Massachusetts) Part of Abbott Laboratories, Biosite, Inc. is a consulting firm founded by Kenneth F. Buechler. The company, based in MA, specializes in strategic alliances, business development, and M&A advisory services within the biopharmaceutical field. The company has extensive expertise in therapeutic antibodies & proteins, oncology, autoimmune & infectious diseases, diagnostics, and specialty pharmaceuticals. Biosite, Inc. has been retained by various clients, including MedinCell S.A., Medin Cell Corp., Inc. & Undisclosed Mexican generics company, Avid Bioservices, Chiome Bioscience, Pfizer Animal Health, CombiChem, Kaken Pharmaceutical Co., Ltd., MediLite Diagnostics, Molecular Research Institute (Mri), and Structural Bioinformatics Inc. | |
Twomey Family Investments LLC |
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