# Stephen Mackintosh

> Stephen Mackintosh is a seed investor at Re:infer (London) backing Artificial Intelligence. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Re:infer](https://shizune.co/investors/profile/reinfer-io)
- Location: London, United Kingdom
- Total investments: 1
- Last investment: May 2026
- Lead investor: 100%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/stephenmackintosh

Stephen Mackintosh is a seed investor at Re:infer in London focused on Artificial Intelligence. Stephen Mackintosh

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Nof1 | Nof1 is an AI research lab focused on financial markets.Nof1 is training models from scratch using frontier AI techniques to launch the era of agent-based investing. | $15M | Seed | May 15, 2026 |  |

1 of 1 investments shown.

## Co-investors
- [Sui Group Holdings](https://shizune.co/investors/profile/sui-group-holdings) — VC Fund, 1 deal together

## About Re:infer

VC Fund · London, United Kingdom

Re:infer, the Conversational Data Intelligence platform built for the enterprise. Businesses use our platform to optimise customer experience, increase scalability, and improve governance and control. We democratise the power of NLU to transform service.Operated via a zero-code user interface Re:infer allows business, domain experts, and COEdevelopers to create ML or NLP models quickly and at scale.Re:infer is a spinout from UCL, a global centre for artificial intelligence research, is backed by Seedcamp Europe's leading early stage investment fund and some of Europe’s most successful AI entrepreneurs.

5 contacts available at Re:infer.

| Name | Title | Profile |
| --- | --- | --- |
| Cristi Cobzarenco | VP Engineering | https://shizune.co/investors/profile/cristi-cobzarenco |
| David Barber | Chief Scientific Officer | https://shizune.co/investors/profile/david-barber-3 |
| David Barber | Chief Scientific Officer | https://shizune.co/investors/profile/david-barber |
| Edward Challis | Co-founder and CEO | https://shizune.co/investors/profile/edward-challis |
| Marius Cobzarenco | Co-Founder and CTO | https://shizune.co/investors/profile/marius-cobzarenco-2 |

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## FAQ

### What does Stephen Mackintosh invest in?

Stephen Mackintosh invests primarily in Artificial Intelligence startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Stephen Mackintosh last invest?

The most recent investment recorded for Stephen Mackintosh closed in May 2026. 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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