# Mark Esterhuizen

> Mark Esterhuizen is a pre-seed investor at Aura Ventures. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Aura Ventures](https://shizune.co/investors/profile/aura-venture-fund)
- Total investments: 1
- Last investment: Sep 2025
- Lead investor: 100%
- Last updated: Aug 2026

Mark Esterhuizen is a pre-seed investor at Aura Ventures.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Isaacus | Isaacus is an AI research company building legal superintelligence.Isaacus currently offers a suite of state-of-the-art information retrieval, classification, extraction, and enrichment models that help supercharge legal AI applications.As proud supporters of open research, Isaacus maintains popular open-source datasets and libraries such asthe Massive Legal Embedding Benchmark (MLEB), Legal RAG Bench, Open Australian Legal Corpus, and semchunk.Isaacus is based in Melbourne, Australia, and Riyadh, Saudi Arabia, but operates internationally, serving law firms, enterprises, and governments in the US, UK, Canada, Europe, India, and elsewhere. | $468.2K | Pre-Seed | Sep 16, 2025 |  |

1 of 1 investments shown.

## Co-investors
- [Galileo Ventures](https://shizune.co/investors/profile/galileo-ventures-291b) — VC Fund, 1 deal together

## About Aura Ventures

VC Fund · Sydney, Australia

Aura Ventures is a venture capital firm backing the creators of category-defining technology companies. They provide wealth, funds management, and corporate advisory solutions to their clients.

5 contacts available at Aura Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Calvin Ng | Co-Founder & Managing Partner | https://shizune.co/investors/profile/calvin-ng-2 |
| Charles Wong | Partner | https://shizune.co/investors/profile/charles-wong-2 |
| Eric Chan | Co-Founder & Managing Partner | https://shizune.co/investors/profile/eric-chan-6 |
| Mark Esterhuizen | Partner | https://shizune.co/investors/profile/mark-esterhuizen-7066 |
| Tristan Terry | Principal | https://shizune.co/investors/profile/tristan-terry |

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## FAQ

### When did Mark Esterhuizen last invest?

The most recent investment recorded for Mark Esterhuizen closed in Sep 2025. Shizune tracks 1 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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