Matthew Callahan
Net worth: 942 714 $ as of 31/05/2026
Net worth: 942 714 $ as of 31/05/2026
Matthew Callahan was the founder of Botanix Pharmaceuticals Ltd., founded in 2016, serving as Executive Director from 2016 to 2019 and again from 2020 to 2025.
Mr. Callahan is the founder of iCeutica, Inc., founded in 2005, holding the title of President & Chief Executive Officer.
Mr. Callahan is the founder of Stone Ridge Ventures Pty Ltd., founded in 2005, serving as Investment Director.
Mr. Callahan is the founder of Rumin8 Ltd., founded in 2021, holding the title Head-Regulatory.
Current jobs include Chief Executive Officer at Churchill Pharmaceuticals; Non-Executive Director at Intellection Pty Ltd.; Director at Ben Franklin Technology Partners of Southeastern Pennsylvania since 2016; Executive Director at Botanix Pharmaceuticals, Inc.; Non-Executive Director at Nemgenix Pty Ltd.; Non Executive Director at Matteo Mining Corp.
Pty Ltd.; Director at Glycan Bioscience LLC; Director at Thylacine Consulting LLC; Executive Director at Respirion Pharmaceuticals Pty Ltd.; and Director at Microsize, Inc.Former jobs include Chief Executive Officer at Dimerix Bioscience Pty Ltd. from 2003 to 2005; Director at The Cash Store Australia Holdings, Inc. in 2009; Director at Glycan Biosciences, Inc. from 2006 to 2011; Non-Executive Director at Orthocell Ltd. from 2006 to 2019 and from 2020 to 2023; Non-Executive Director at Emyria Ltd. from 2018 to 2023; Director - Sales Excellence at Riverside Partners LLC (New York); General Manager at Xelor Software, Inc.; and General Manager & General Counsel at Nearmap Pty Ltd.Education includes undergraduate and MBAistration degrees from The University of Western Australia.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 27/08/2025 | 54,586,791 ( 2% ) | 942 714 $ | 31/05/2026 |
| Companies | Position | Start |
|---|---|---|
Intellection Pty Ltd.
Intellection Pty Ltd. Other Metals/MineralsNon-Energy Minerals Develops integrated solutions for automated, quantitative evolution of minerals, rocks, and man-made materials | Director/Board Member | - |
iCeutica, Inc.
iCeutica, Inc. Pharmaceuticals: MajorHealth Technology Manufactures pharmaceutical products | Chief Executive Officer | 01/01/2005 |
Nemgenix Pty Ltd.
Nemgenix Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Develops new technologies for the control of plant parasitic nematodes and aphids | Director/Board Member | - |
Matteo Mining Corp. Pty Ltd.
Matteo Mining Corp. Pty Ltd. Precious MetalsNon-Energy Minerals Provides support services for companies engaged in underground mining and tunneling system | Director/Board Member | - |
Stone Ridge Ventures Pty Ltd.
Stone Ridge Ventures Pty Ltd. Investment ManagersFinance Stone Ridge Ventures invests in private companies located in Australia. The firm focuses on wide range of sectors and industries. It participates in seed stage and early stage transactions. It also provides follow on investment. | Founder | 01/01/2005 |
Ben Franklin Technology Partners of Southeastern Pennsylvania
Ben Franklin Technology Partners of Southeastern Pennsylvania Financial ConglomeratesFinance Provides seed stage capital investment and advisory services for regional technology companies | Director/Board Member | 21/12/2016 |
Botanix Pharmaceuticals, Inc.
Botanix Pharmaceuticals, Inc. BiotechnologyHealth Technology Develops drugs for the treatment of musculoskeletal diseases, such as oacne, psoriasis and atopic dermatitis | Director/Board Member | - |
Glycan Bioscience LLC
Glycan Bioscience LLC BiotechnologyHealth Technology Develops carbohydrate based drugs | Director/Board Member | - |
Churchill Pharmaceuticals | Chief Executive Officer | - |
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Active
Inactive
Listed companies
Private companies
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
| Private companies | 23 |
|---|---|
iCeutica, Inc.
iCeutica, Inc. Pharmaceuticals: MajorHealth Technology Manufactures pharmaceutical products | Health Technology |
Xelor Software, Inc.
Xelor Software, Inc. Packaged SoftwareTechnology Services Provides service quality management solutions for enterprises deploying Internet protocol telephony systems | Technology Services |
Botanix Pharmaceuticals Ltd.
Botanix Pharmaceuticals Ltd. Pharmaceuticals: MajorHealth Technology Engages in the research and development of dermatology and antimicrobial products | Health Technology |
Nearmap Pty Ltd.
Nearmap Pty Ltd. Packaged SoftwareTechnology Services Provides cloud-based geospatial information and location intelligence content services | Technology Services |
Riverside Partners LLC (New York)
Riverside Partners LLC (New York) Investment ManagersFinance Riverside Partners invests in small and middle market companies located across the globe with an EBITDA of USD 10 million - 35 million. The firm focuses on companies operating in the fields of business, consumer, education & training, franchisors, healthcare, software & IT, specialty manufacturing, and thematic investing. It provides financing in growth stage capital transactions and provides non-control options. | Finance |
The University of Western Australia
The University of Western Australia Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Intellection Pty Ltd.
Intellection Pty Ltd. Other Metals/MineralsNon-Energy Minerals Develops integrated solutions for automated, quantitative evolution of minerals, rocks, and man-made materials | Non-Energy Minerals |
The Cash Store Australia Holdings, Inc.
The Cash Store Australia Holdings, Inc. MiscellaneousMiscellaneous Operates as holding company with interest in providing financial services | Miscellaneous |
Ben Franklin Technology Partners of Southeastern Pennsylvania
Ben Franklin Technology Partners of Southeastern Pennsylvania Financial ConglomeratesFinance Provides seed stage capital investment and advisory services for regional technology companies | Finance |
Stone Ridge Ventures Pty Ltd.
Stone Ridge Ventures Pty Ltd. Investment ManagersFinance Stone Ridge Ventures invests in private companies located in Australia. The firm focuses on wide range of sectors and industries. It participates in seed stage and early stage transactions. It also provides follow on investment. | Finance |
Glycan Biosciences, Inc. | |
Orthocell Ltd.
Orthocell Ltd. Medical SpecialtiesHealth Technology Operates as a biotherapeutic technology development company | Health Technology |
Dimerix Bioscience Pty Ltd.
Dimerix Bioscience Pty Ltd. Pharmaceuticals: MajorHealth Technology Develops therapy for chronic kidney disease | Health Technology |
Botanix Pharmaceuticals, Inc.
Botanix Pharmaceuticals, Inc. BiotechnologyHealth Technology Develops drugs for the treatment of musculoskeletal diseases, such as oacne, psoriasis and atopic dermatitis | Health Technology |
Nemgenix Pty Ltd.
Nemgenix Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Develops new technologies for the control of plant parasitic nematodes and aphids | Commercial Services |
Matteo Mining Corp. Pty Ltd.
Matteo Mining Corp. Pty Ltd. Precious MetalsNon-Energy Minerals Provides support services for companies engaged in underground mining and tunneling system | Non-Energy Minerals |
Glycan Bioscience LLC
Glycan Bioscience LLC BiotechnologyHealth Technology Develops carbohydrate based drugs | Health Technology |
Churchill Pharmaceuticals | |
Emyria Ltd.
Emyria Ltd. Packaged SoftwareTechnology Services Develops patient-centric care model technology | Technology Services |
Thylacine Consulting LLC | |
Respirion Pharmaceuticals Pty Ltd.
Respirion Pharmaceuticals Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Operates as a biotechnology firm | Commercial Services |
Rumin8 Ltd.
Rumin8 Ltd. Information Technology ServicesTechnology Services Operates as an agriculture-focused climate tech company using pharmaceutical technology | Technology Services |
Microsize, Inc.
Microsize, Inc. Miscellaneous Commercial ServicesCommercial Services Provides technical services | Commercial Services |
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