Angel investor based in United States.
8 companies backed across
10 recorded rounds, Aug 2015 – Oct 2025.
Inflection AI, Greylock, ex-Google, Reos Partners.
Sectors of the companies in the portfolio, by company count.
Head-office city of the companies in the portfolio.
Rounds by stage.
Total size of the rounds they joined — an angel's own cheque is a share of this, and is not disclosed.
Every company Mustafa Suleyman appears as an investor in, most recent round first.
| Company | City | Sectors | Latest round | Rounds | Round value |
|---|---|---|---|---|---|
| Afori | Barcelona | Business Process Management SoftwareFuture of WorkWorkflow Automation | Seed Oct 2025 | 1 | $4.6M |
| Co Helm | Series A Jun 2024 | 2 | $23.2M | ||
| Forward | San Francisco | Healthcare Booking PlatformsHealthTech | Series E+ Nov 2023 | 1 | $100M |
| ElevenLabs | New York City | Generative AINatural Language ProcessingAI Infrastructure | Series A May 2023 | 1 | $19M |
| Phaidra | Seattle | Manufacturing TechAgentic AIArtificial Intelligence | Series A Jul 2022 | 1 | $25M |
| deepset | Berlin | Generative AINatural Language ProcessingAI Infrastructure | Series A Apr 2022 | 1 | $14M |
| Baseten Technologies | San Francisco | AI InfrastructureArtificial IntelligenceAI as a Service | Seed Apr 2022 | 1 | $8M |
| Thread | London | Fashion TechB2C E-CommerceB2C Fashion E-Commerce | Series B Oct 2018 | 2 | $8M |
Investors that appear in the same rounds. Two names in one round is what "invested together" means here — it is not a claim about a relationship off the cap table.
| Investor | Type | Based | Shared rounds | Shared companies |
|---|---|---|---|---|
| Demis Hassabis | Angel | London | 3 | 2 |
| Sequoia Capital | Firm | Menlo Park | 2 | 1 |
| Balderton Capital | Firm | London | 2 | 1 |
| Maurice Helfgott | Angel | London | 2 | 1 |
| Sebastian Picardo | Angel | 2 | 1 | |
| Ahren | Firm | Cambridge | 1 | 1 |
| Dima Shvets | Angel | 1 | 1 | |
| Aravind Srinivas | Angel | San Francisco | 1 | 1 |
| Daniel Gross | Angel | San Francisco | 1 | 1 |
| Emil Eifrem | Angel | Menlo Park | 1 | 1 |
| Y Combinator | Firm | Mountain View | 1 | 1 |
| Amery Capital | Firm | London | 1 | 1 |
| Caffeinated Capital | Firm | San Francisco | 1 | 1 |
| Garrett Koehn | Angel | San Francisco | 1 | 1 |
| General Catalyst | Firm | San Francisco | 1 | 1 |
| Flying Fish Ventures | Firm | Seattle | 1 | 1 |
| Embark Studios | Firm | Stockholm | 1 | 1 |
| Founders Fund | Firm | San Francisco | 1 | 1 |
| Eric Schmidt | Angel | New York City | 1 | 1 |
| SoftBank | Firm | Tokyo | 1 | 1 |