![C. Payne](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>)
C. Payne
Director of Finance/CFO at
APTOSE BIOSCIENCES INC.
Net worth: 403 $ as of 31/05/2026
Profile
C.
Fletcher Payne is currently SVP, Chief Financial & Business Officer at Aptose Biosciences, Inc. since 2023.
Former positions include Chief Financial & Accounting Officer at Catalyst Biosciences, Inc. from 2015 to 2019, Chief Financial Officer at Catalyst Biosciences, Inc. in 2015, Chief Financial Officer at Pathwork Diagnostics, Inc. from 2008 to 2011, Chief Financial Officer at CytomX Therapeutics Holdings LLC, Chief Financial Officer at Syapse Holdings, Inc., Vice President-Finance at Rinat Neuroscience Corp., Chief Financial Officer & Vice President at Plexxikon, Inc., Principal at Sun Microsystems, Inc., Principal at International Business Machines Corp., Finance Director & Controller at Dynavax Technologies Corp., Finance Director & Assistant Treasurer at Abgenix, Inc., and Finance Director & Assistant Treasurer at Cell Genesys, Inc. Education includes undergraduate studies at Haas School of Business.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 23/02/2026 | 244 ( 0.01% ) | 403 $ | 31/05/2026 |
C. Payne active positions
| Companies | Position | Start |
|---|---|---|
| APTOSE BIOSCIENCES INC. | Director of Finance/CFO | 27/06/2022 |
Former positions of C. Payne
| Companies | Position | End |
|---|---|---|
Syapse Holdings, Inc.
 Syapse Holdings, Inc. Packaged SoftwareTechnology Services Develops healthcare data software platform | Director of Finance/CFO | 27/06/2022 |
| CATALYST BIOSCIENCES | Director of Finance/CFO | 30/08/2019 |
Catalyst Bioscience, Inc. /Old/
 Catalyst Bioscience, Inc. /Old/ Medical SpecialtiesHealth Technology Develops and markets catalytic biopharmaceutical products | Director of Finance/CFO | 01/08/2015 |
Pathwork Diagnostics, Inc.
 Pathwork Diagnostics, Inc. Medical SpecialtiesHealth Technology Develops and commercializes molecular diagnostic tests for cancer | Director of Finance/CFO | 01/11/2011 |
Abgenix, Inc.
 Abgenix, Inc. BiotechnologyHealth Technology Develops therapeutic products | Director of Finance/CFO | - |
Training of C. Payne
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
20
1st degree connections
14
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 14 |
|---|---|
Cell Genesys, Inc.
 Cell Genesys, Inc. Pharmaceuticals: MajorHealth Technology Develops human disease therapies based on innovative gene modification technologies | Health Technology |
International Business Machines Corp.
 International Business Machines Corp. Information Technology ServicesTechnology Services Provides software, IT consulting, cloud and infrastructure services | Technology Services |
Sun Microsystems, Inc.
 Sun Microsystems, Inc. SemiconductorsElectronic Technology Develops computer and storage systems, high-speed microprocessors and software solutions for computer networking | Electronic Technology |
Aptose Biosciences, Inc.
 Aptose Biosciences, Inc. Pharmaceuticals: MajorHealth Technology Discovers, research and develops anticancer therapies with high safety profiles | Health Technology |
Abgenix, Inc.
Abgenix, Inc. BiotechnologyHealth Technology Develops therapeutic products | Health Technology |
Dynavax Technologies Corp.
 Dynavax Technologies Corp. BiotechnologyHealth Technology Develops and commercializes novel products to prevent and treat infectious diseases | Health Technology |
Plexxikon, Inc.
 Plexxikon, Inc. Miscellaneous Commercial ServicesCommercial Services Provides clinical and medical drug discovery and development services | Commercial Services |
Catalyst Bioscience, Inc. /Old/
Catalyst Bioscience, Inc. /Old/ Medical SpecialtiesHealth Technology Develops and markets catalytic biopharmaceutical products | Health Technology |
Rinat Neuroscience Corp.
 Rinat Neuroscience Corp. BiotechnologyHealth Technology Manufactures & markets drugs for treating neurological diseases | Health Technology |
Pathwork Diagnostics, Inc.
Pathwork Diagnostics, Inc. Medical SpecialtiesHealth Technology Develops and commercializes molecular diagnostic tests for cancer | Health Technology |
CytomX Therapeutics Holdings LLC
 CytomX Therapeutics Holdings LLC Pharmaceuticals: MajorHealth Technology Engaged in the development of new generation targeted antibody therapeutics | Health Technology |
Haas School of Business
 Haas School of Business Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Syapse Holdings, Inc.
Syapse Holdings, Inc. Packaged SoftwareTechnology Services Develops healthcare data software platform | Technology Services |
Catalyst Biosciences, Inc.
 Catalyst Biosciences, Inc. BiotechnologyHealth Technology Operates as a clinical stage biopharmaceutical company | Health Technology |
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