# Jonas Siljemark

> Jonas Siljemark is a angel investor in Stockholm backing eSports, Internet and PC Games. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Location: Stockholm, Sweden
- Total investments: 1
- Last investment: Aug 2015
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/jonas-siljemark-b359296/

Jonas Siljemark is a angel investor in Stockholm focused on eSports and Internet. Jonas Siljemark is the CEO of Warner Music Scandinavia.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| eSports | 1 | 100% |
| Internet | 1 | 100% |
| PC Games | 1 | 100% |
| Software | 1 | 100% |
| Video Games | 1 | 100% |

6 industries tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Challengermode | Challengermode is a Swedish technology company founded in 2014, with the mission to make esports truly accessible for gamers. Today we're building a platform that provides the fundamental online esports infrastructure for all relevant stakeholders within the ecosystem. With 2.5billion people world-wide playing computer games and hundreds ofmillions of people watching professional esports tournaments monthly, Challengermode's platform – which has hosted millions of competitions – is becoming the place for regular gamers to congregate, practice or compete in esports. Our best-in-class tech automates complex tournament infrastructure through game integrations and allows gamers to easily play in competitions, tournaments, and leagues across any device or console while enabling community building and monetization at scale for organizers of all kinds. | $579K | Angel | Aug 20, 2015 |  |

1 of 1 investments shown.

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## FAQ

### What does Jonas Siljemark invest in?

Jonas Siljemark invests primarily in eSports, Internet and PC Games startups, most often at Angel stage. Most of the 1 investments tracked by Shizune back companies in Sweden. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Jonas Siljemark last invest?

The most recent investment recorded for Jonas Siljemark closed in Aug 2015. 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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