![Barbara Kosacz](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>)
Barbara Kosacz
Director/Board Member at
LEONABIO, INC.
Net worth: 398 622 $ as of 30/05/2026
Profile
Barbara A. Kosacz is currently an Independent Director at XOMA Royalty Corp.
since 2019, a Director at Biotechnology Innovation Organization, an Independent Director at LeonaBio, Inc. since 2021, and a Trustee at Keck Graduate Institute of Applied Life Sciences.
Former roles include COO, Secretary & General Counsel at Kronos Bio, Inc. from 2020 to 2024; Independent Director at Locust Walk Acquisition Corp.
in 2021; Head-International Life Sciences Practice at Cooley LLP from 2002 to 2020; Vice President at iScribe, Inc. from 2001 to 2002; Partner at Cooley LLP from 1997 to 2000; Principal at Cooley Godward LLP; Secretary at Cellerant Therapeutics, Inc., Moksha8 Pharmaceuticals, Inc., and NGM Biopharmaceuticals, Inc.; Independent Director at Phoenix Biotech Acquisition Corp.; Director at Arsenal Biosciences, Inc.; and Member of the California State Bar Association.
Education includes an undergraduate degree from Stanford University in 1980 and a graduate degree from Berkeley Law University of California.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 20/05/2026 | 9,557 ( 0.08% ) | 398 622 $ | 30/05/2026 | |
LEONABIO, INC. -.--% | 30/04/2026 | 0 ( -.--% ) | - $ | 30/05/2026 |
Barbara Kosacz active positions
| Companies | Position | Start |
|---|---|---|
| XOMA ROYALTY CORPORATION | Director/Board Member | 31/12/2018 |
| LEONABIO, INC. | Director/Board Member | 07/03/2021 |
Keck Graduate Institute of Applied Life Sciences
 Keck Graduate Institute of Applied Life Sciences Other Consumer ServicesConsumer Services Functions as a College/University | Director/Board Member | - |
Biotechnology Innovation Organization
 Biotechnology Innovation Organization Miscellaneous Commercial ServicesCommercial Services Operates as a biotechnology advocacy organization representing biotech companies, industry leaders and state biotech associations | Director/Board Member | - |
Former positions of Barbara Kosacz
| Companies | Position | End |
|---|---|---|
| KRONOS BIO, INC. | Chief Operating Officer | 15/02/2024 |
| EFFECTOR THERAPEUTICS, INC. | Director/Board Member | 31/07/2021 |
Cooley LLP
 Cooley LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services | Corporate Officer/Principal | 30/06/2020 |
California State Bar Association | Corporate Officer/Principal | 14/05/2014 |
iScribe, Inc.
 iScribe, Inc. Computer Processing HardwareElectronic Technology Designs and manufactures a handheld computing product that provides electronic prescription services | Corporate Officer/Principal | 31/01/2002 |
Training of Barbara Kosacz
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
96
1st degree connections
17
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 17 |
|---|---|
XOMA Royalty Corp.
 XOMA Royalty Corp. Pharmaceuticals: MajorHealth Technology Discovers and develops antibody therapeutics | Health Technology |
Cellerant Therapeutics, Inc.
 Cellerant Therapeutics, Inc. Medical SpecialtiesHealth Technology Develops stem cell-based cellular and antibody therapeutics for blood disorders and cancer | Health Technology |
Biotechnology Innovation Organization
Biotechnology Innovation Organization Miscellaneous Commercial ServicesCommercial Services Operates as a biotechnology advocacy organization representing biotech companies, industry leaders and state biotech associations | Commercial Services |
Moksha8 Pharmaceuticals, Inc.
 Moksha8 Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Manufactures and distributes medicines | Health Technology |
NGM Biopharmaceuticals, Inc.
 NGM Biopharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company that develops novel & life-changing medicines | Health Technology |
LeonaBio, Inc.
 LeonaBio, Inc. BiotechnologyHealth Technology Operates as a clinical-stage biopharmaceutical company | Health Technology |
Stanford University
 Stanford University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Cooley Godward LLP
 Cooley Godward LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services | Commercial Services |
iScribe, Inc.
iScribe, Inc. Computer Processing HardwareElectronic Technology Designs and manufactures a handheld computing product that provides electronic prescription services | Electronic Technology |
Keck Graduate Institute of Applied Life Sciences
Keck Graduate Institute of Applied Life Sciences Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Cooley LLP
Cooley LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services | Commercial Services |
California State Bar Association | |
Berkeley Law University of California
 Berkeley Law University of California Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Kronos Bio, Inc.
 Kronos Bio, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage biopharmaceutical company that develops novel cancer therapeutics | Health Technology |
Arsenal Biosciences, Inc.
 Arsenal Biosciences, Inc. Packaged SoftwareTechnology Services Develops cellular drug discovery tools to provide medicines for cancer treatment and operates cell manufacturing platform | Technology Services |
Locust Walk Acquisition Corp.
 Locust Walk Acquisition Corp. Financial ConglomeratesFinance Operates as a blank check company | Finance |
Phoenix Biotech Acquisition Corp.
 Phoenix Biotech Acquisition Corp. Financial ConglomeratesFinance Operates as a blank check company | Finance |
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