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John MacTaggart
Chairman at
Memtech Pty Ltd.
Net worth: 380 M $ as of 2026-06-29
Profile
John Dugald MacTaggart is the founder of Brisbane Angels Nominees Pty Ltd. founded in 2006, where he held the title of Chairman.
He is also the founder of Australian Association of Angel Investors Ltd. Mr. MacTaggart's current job is Chairman at Memtech Pty Ltd. Mr. MacTaggart's former jobs include Chairman at Australian BioRefining Pty Ltd., and Non-Independent Non-Executive Director at Technology One Ltd. from 2012 to 2024, and Non-Executive Director at Omni Market Tide Ltd. from 2015 to 2016.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-04-16 | 18,632,454 ( 5.69% ) | 380 M $ | 2026-06-29 |
John MacTaggart active positions
| Companies | Position | Start |
|---|---|---|
Memtech Pty Ltd.
 Memtech Pty Ltd. Engineering & ConstructionIndustrial Services Develops technologies for electro dialysis, electrolytic separation, hydrolysis, membrane separation, absorption and adsorption processes | Chairman | - |
Former positions of John MacTaggart
| Companies | Position | End |
|---|---|---|
| TECHNOLOGY ONE LIMITED | Director/Board Member | 2024-02-20 |
Omni Market Tide Ltd.
 Omni Market Tide Ltd. Packaged SoftwareTechnology Services Develops investor relations and shareholder engagement software | Director/Board Member | 2016-02-29 |
Australian BioRefining Pty Ltd.
 Australian BioRefining Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Specializes in identifying, improving and commercializing, viable and industrial processes | Chairman | - |
Brisbane Angels Nominees Pty Ltd.
 Brisbane Angels Nominees Pty Ltd. Investment ManagersFinance Brisbane Angels invests in companies located in Australia. The firm focuses on a broad range of sectors and industries. It provides financing for seed, early and growth stage capital requirements with an investment size ranging from AUD 0.5 to 5 million. | Founder | - |
Australian Association of Angel Investors Ltd. | Founder | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
29
1st degree connections
6
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 6 |
|---|---|
Technology One Ltd.
 Technology One Ltd. Packaged SoftwareTechnology Services Provides enterprise, marketing software and consulting solutions | Technology Services |
Australian Association of Angel Investors Ltd. | |
Brisbane Angels Nominees Pty Ltd.
Brisbane Angels Nominees Pty Ltd. Investment ManagersFinance Brisbane Angels invests in companies located in Australia. The firm focuses on a broad range of sectors and industries. It provides financing for seed, early and growth stage capital requirements with an investment size ranging from AUD 0.5 to 5 million. | Finance |
Omni Market Tide Ltd.
Omni Market Tide Ltd. Packaged SoftwareTechnology Services Develops investor relations and shareholder engagement software | Technology Services |
Australian BioRefining Pty Ltd.
Australian BioRefining Pty Ltd. Miscellaneous Commercial ServicesCommercial Services Specializes in identifying, improving and commercializing, viable and industrial processes | Commercial Services |
Memtech Pty Ltd.
Memtech Pty Ltd. Engineering & ConstructionIndustrial Services Develops technologies for electro dialysis, electrolytic separation, hydrolysis, membrane separation, absorption and adsorption processes | Industrial Services |
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