![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: - $ as of 2026-07-30
Profile
Barbara A. Kosacz is currently Director at Biotechnology Innovation Organization, Independent Director at LeonaBio, Inc. since 2021, and Trustee at Keck Graduate Institute of Applied Life Sciences.
Former roles include Director at Arsenal Biosciences, Inc., Independent Director at Locust Walk Acquisition Corp.
in 2021, Independent Director at Phoenix Biotech Acquisition Corp., Independent Director at XOMA Royalty Corp.
from 2019 to 2026, Secretary at Cellerant Therapeutics, Inc., Moksha8 Pharmaceuticals, Inc., and NGM Biopharmaceuticals, Inc., Principal at Cooley Godward LLP, Vice President at iScribe, Inc. from 2001 to 2002, Head-International Life Sciences Practice at Cooley LLP from 2002 to 2020, Partner at Cooley LLP from 1997 to 2000, Member of the California State Bar Association, and COO, Secretary & General Counsel at Kronos Bio, Inc. from 2020 to 2024.
Education includes an undergraduate degree from Stanford University conferred 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 |
|---|---|---|---|---|
LEONABIO, INC. -.--% | 2026-06-22 | 0 ( -.--% ) | - $ | 2026-07-30 |
Barbara Kosacz active positions
| Companies | Position | Start |
|---|---|---|
| LEONABIO, INC. | Director/Board Member | 2021-03-07 |
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 |
|---|---|---|
| XOMA ROYALTY CORPORATION | Director/Board Member | 2026-07-13 |
| KRONOS BIO, INC. | Chief Operating Officer | 2024-02-15 |
| EFFECTOR THERAPEUTICS, INC. | Director/Board Member | 2021-07-31 |
Cooley LLP
 Cooley LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services | Corporate Officer/Principal | 2020-06-30 |
California State Bar Association | Corporate Officer/Principal | 2014-05-14 |
Training of Barbara Kosacz
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
82
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. BiotechnologyHealth Technology Operates as a clinical stage and programmable cell therapy company focused on solid tumor cell therapies to defeat cancer | Health Technology |
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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