![Debra Zack](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>)
Debra Zack
Chief Tech/Sci/R&D Officer at
SPERO THERAPEUTICS, INC.
Net worth: 189 904 $ as of 2026-07-30
Profile
Debra Jeske Zack is currently Chief Medical Officer at Spero Therapeutics, Inc. since 2026.
Former positions include Chief Medical Officer at Exagen, Inc. from 2020 to 2022, Executive Director-Global Product Area at Amgen, Inc., Vice President-Clinical Development at Xencor, Inc., and Associate Professor at the University of California, Los Angeles.
Education includes undergraduate studies at Texas Christian University and a doctorate from The University of Texas Southwestern Medical Center.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-08-02 | 162,311 ( 0.28% ) | 189 904 $ | 2026-07-30 |
Debra Zack active positions
| Companies | Position | Start |
|---|---|---|
| SPERO THERAPEUTICS, INC. | Chief Tech/Sci/R&D Officer | 2026-07-26 |
Former positions of Debra Zack
| Companies | Position | End |
|---|---|---|
| EXAGEN INC. | Chief Tech/Sci/R&D Officer | 2022-12-04 |
University of California, Los Angeles
 University of California, Los Angeles Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | - |
| AMGEN INC. | Corporate Officer/Principal | - |
| XENCOR, INC. | Corporate Officer/Principal | - |
Training of Debra Zack
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
22
1st degree connections
7
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 7 |
|---|---|
Amgen, Inc.
 Amgen, Inc. BiotechnologyHealth Technology Discovers, develops, manufactures and delivers human therapeutics | Health Technology |
Xencor, Inc.
 Xencor, Inc. BiotechnologyHealth Technology Develops therapeutics to treat autoimmune and allergic diseases, cancer and other conditions | Health Technology |
University of California, Los Angeles
University of California, Los Angeles Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Texas Christian University
 Texas Christian University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Exagen, Inc.
 Exagen, Inc. Medical/Nursing ServicesHealth Services Operates as a commercial-stage diagnostics company | Health Services |
The University of Texas Southwestern Medical Center
 The University of Texas Southwestern Medical Center Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Spero Therapeutics, Inc.
 Spero Therapeutics, Inc. BiotechnologyHealth Technology Develops therapies for the treatment of bacterial infections | Health Technology |
- Stock Market
- Insiders
- Debra Zack
