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Jack Geltosky
Director/Board Member at
MEDICENNA THERAPEUTICS CORP.
Net worth: - $ as of 2026-06-29
Profile
John Geltosky is Chairman-Product Development Review Council at The Cancer Prevention & Research Institute of Texas.
Dr. Geltosky is Independent Non-Executive Director at Medicenna Therapeutics Corp.
since 2020.
Dr. Geltosky is Senior Vice President-Business Development at Aztec Components, Inc. Dr. Geltosky was President & Chief Executive Officer at Message Pharmaceuticals, Inc. Dr. Geltosky was Director at Enzon Pharmaceuticals, Inc. from 2008 to 2009.
Dr. Geltosky was Independent Director at Sophiris Bio, Inc. from 2008 to 2020.
Dr. Geltosky was Managing Director at JEG & Associates LLC from 2011 to 2016.
Dr. Geltosky was VP-External Science, Technology & Licensing at Bristol Myers Squibb Co. Dr. Geltosky was Vice President-Scientific Licensing at GSK Plc.
Dr. Geltosky was SVP-Business Development & Life Sciences at Arizona Science & Technology Enterprises LLC from 2007 to 2011.
Dr. Geltosky earned a doctorate from California Institute of Technology.
Dr. Geltosky earned an undergraduate degree from the University of Memphis.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-09-24 | 0 ( -.--% ) | - $ | 2026-06-29 |
Jack Geltosky active positions
| Companies | Position | Start |
|---|---|---|
| MEDICENNA THERAPEUTICS CORP. | Director/Board Member | 2020-09-29 |
Aztec Components, Inc.
 Aztec Components, Inc. Electronics DistributorsDistribution Services Distributes electronic components, semiconductors and peripherals | Corporate Officer/Principal | 2010-03-18 |
The Cancer Prevention & Research Institute of Texas
 The Cancer Prevention & Research Institute of Texas BiotechnologyHealth Technology Provides cancer research and prevention programs & services | Corporate Officer/Principal | - |
Former positions of Jack Geltosky
| Companies | Position | End |
|---|---|---|
| SOPHIRIS BIO | Director/Board Member | 2020-04-27 |
JEG & Associates LLC
 JEG & Associates LLC Miscellaneous Commercial ServicesCommercial Services Provides legal services | Corporate Officer/Principal | 2016-08-31 |
Arizona Science & Technology Enterprises LLC | Corporate Officer/Principal | 2011-08-31 |
Enzon Pharmaceuticals, Inc.
 Enzon Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops innovative therapeutics for cancer patients | Director/Board Member | 2009-05-20 |
| GSK PLC | Corporate Officer/Principal | - |
Training of Jack Geltosky
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
59
1st degree connections
12
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 12 |
|---|---|
Bristol Myers Squibb Co.
 Bristol Myers Squibb Co. Pharmaceuticals: MajorHealth Technology Manufactures and markets biopharmaceuticals products | Health Technology |
Enzon Pharmaceuticals, Inc.
Enzon Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops innovative therapeutics for cancer patients | Health Technology |
Sophiris Bio, Inc.
 Sophiris Bio, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceutical products for the treatment of urological diseases | Health Technology |
GSK Plc
 GSK Plc Pharmaceuticals: MajorHealth Technology Develops, manufactures and distributes vaccines and other pharmaceutical products | Health Technology |
California Institute of Technology
 California Institute of Technology Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Memphis
 University of Memphis Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Message Pharmaceuticals, Inc.
 Message Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceutical drugs | Health Technology |
Arizona Science & Technology Enterprises LLC | |
Aztec Components, Inc.
Aztec Components, Inc. Electronics DistributorsDistribution Services Distributes electronic components, semiconductors and peripherals | Distribution Services |
The Cancer Prevention & Research Institute of Texas
The Cancer Prevention & Research Institute of Texas BiotechnologyHealth Technology Provides cancer research and prevention programs & services | Health Technology |
JEG & Associates LLC
JEG & Associates LLC Miscellaneous Commercial ServicesCommercial Services Provides legal services | Commercial Services |
Medicenna Therapeutics Corp.
 Medicenna Therapeutics Corp. BiotechnologyHealth Technology Develops biopharmaceuticals | Health Technology |
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