# Karl Büche

> Karl Büche is a seed investor at Angels United (Vienna). See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Angels United](https://shizune.co/investors/profile/angels-united)
- Location: Vienna, Austria
- Total investments: 2
- Last investment: Oct 2023
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/karl-b%C3%BCche-36858569

Karl Büche is a seed investor at Angels United in Vienna. Karl Büche is based out of Vienna, Wien, and is the Co-Founder of Angels United. Karl previously worked at SMART DIGITAL as a CSOO. Karl Büche attended WU Vienna.

## Investment focus

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 1 | 50% |
| Pre-Seed | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| mypaperwork.ai | Mypaperwork.ai reforms how global migration works through cutting-edge artificial intelligence. The company aims to make migration easy, understandable, and transparent through AI and a deep understanding of bureaucratic processes. | $579.7K | Pre-Seed | Aug 01, 2025 |  |
| Halm | Halm is building a modern outdoor homecare brand for consumers. |  | Seed | Oct 25, 2023 |  |

2 of 2 investments shown.

## Co-investors
- [Founders of Europe](https://shizune.co/investors/profile/founders-of-europe) — VC Fund, 2 deals together
- [Angel Invest](https://shizune.co/investors/profile/angel-invest-ventures) — VC Fund, 1 deal together
- [Angels United](https://shizune.co/investors/profile/angels-united) — VC Fund, 1 deal together
- [Calm/Storm VC](https://shizune.co/investors/profile/calm-storm-ventures) — VC Fund, 1 deal together
- [Camouflage Ventures](https://shizune.co/investors/profile/camouflage-ventures) — VC Fund, 1 deal together
- [Hardlymountain](https://shizune.co/investors/profile/hardlymountain) — VC Fund, 1 deal together

## About Angels United

VC Fund · Atzgersdorf, Austria

Angels United is an investment firm that invest in young tech companies, especially in the pre-seed and seed phase.

5 contacts available at Angels United.

| Name | Title | Profile |
| --- | --- | --- |
| Hermann Futter | Co-Founder | https://shizune.co/investors/profile/hermann-futter |
| Karl Büche | Co-Founder | https://shizune.co/investors/profile/karl-b%C3%BCche |
| Markus Ertler | Co-Founder | https://shizune.co/investors/profile/markus-ertler-5fe6 |
| Michael Edtmayer | CEO and Co-Founder | https://shizune.co/investors/profile/michael-edtmayer |
| Nikolaus Futter | Co-Founder | https://shizune.co/investors/profile/nikolaus-futter |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### When did Karl Büche last invest?

The most recent investment recorded for Karl Büche closed in Oct 2023. Shizune tracks 2 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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