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Jack Geltosky
Director/Board Member at
MEDICENNA THERAPEUTICS CORP.
Net worth: - $ as of 2026-05-30
Profile
John Geltosky currently works at The Cancer Prevention & Research Institute of Texas, as Chairman-Product Development Review Council, JEG & Associates LLC, as Managing Director from 2011, Medicenna Therapeutics Corp., as Independent Non-Executive Director from 2020, and Aztec Components, Inc., as Senior Vice President-Business Development.
Dr. Geltosky also formerly worked at Message Pharmaceuticals, Inc., as President & Chief Executive Officer, Enzon Pharmaceuticals, Inc., as Director from 2008 to 2009, Sophiris Bio, Inc., as Independent Director from 2008 to 2020, Bristol Myers Squibb Co., as VP-External Science, Technology & Licensing, GSK Plc, as Vice President-Scientific Licensing, and Arizona Science & Technology Enterprises LLC, as SVP-Business Development & Life Sciences from 2007 to 2011.
Dr. Geltosky received his doctorate degree from California Institute of Technology and undergraduate degree from the University of Memphis.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-09-24 | 0 ( -.--% ) | - $ | 2026-05-30 |
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
38
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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