# Ernst G. Mayer

> Ernst G. Mayer is a startup investor at Sirius Seedfonds. See 0 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Sirius Seedfonds](https://shizune.co/investors/profile/sirius-seedfonds)
- Last updated: Aug 2026

Ernst G. Mayer is a startup investor at Sirius Seedfonds. Ernst G. Mayer is the managing partner of Sirius Venture Partners GmbH. As business and economics, he has more than 20 years of experience in capital markets, particularly in the area of ​​venture capital. From 1985 to 1989 he was entrusted with the German Equalisation Bank with the financing of technology companies. From 1989, he built the tbg(Technologie-Beteiligungs-Gesellschaft). By the end of 2003, he was responsible for an investment portfolio of EUR 1.1 billion to around 750 technology companies, as well as for direct investment of EUR 0.4 billion in 42 venture capital funds. Ernst G. Mayer has a high caliber personal network and has numerous supervisory and advisory mandates inherent in technology companies. He is the lead investor of the KfW and coach at the High Tech Startup (HTGF).

## About Sirius Seedfonds

VC Fund · Deutsch, Germany

Sirius Seedfonds invests in young innovative companies in the early stage Early stage (seed). These companies need to partner with relevant experience and the necessary know-how. It is precisely this phase involves early-stage-specific risks, which must be met with appropriate instruments.

5 contacts available at Sirius Seedfonds.

| Name | Title | Profile |
| --- | --- | --- |
| John Peschko | Team Member | https://shizune.co/investors/profile/john-peschko |
| David Jetel | Managing Partner | https://shizune.co/investors/profile/david-jetel |
| Ernst G. Mayer | Managing Partner | https://shizune.co/investors/profile/ernst-g-mayer |
| Friedrich von Diest | Managing Partner | https://shizune.co/investors/profile/friedrich-von-diest |
| Hella Niedersteberg | Administrative support | https://shizune.co/investors/profile/hella-niedersteberg |

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