# Arnold Wierzejski

> Arnold Wierzejski is a pre-seed investor at CTHINGS.CO backing Sensor. See 2 investments, check sizes, portfolio and contact details. Updated Sep 2026.

- Type: Angel Investor
- Fund: CTHINGS.CO
- Location: Warsaw, Poland
- Total investments: 2
- Last investment: Apr 2020
- Lead investor: 100%
- Last updated: Sep 2026
- LinkedIn: https://www.linkedin.com/in/arnoldwierzejski/
- Website: https://x.com/arniWie

Arnold Wierzejski is a pre-seed investor at CTHINGS.CO in Warsaw focused on Sensor and Smart Cities. Arnold Wierzejski is the Founder and CEO at cthings.co.

## Contacts

5 contacts available for Arnold Wierzejski: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/arnold-wierzejski-a5a0?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Pre-Seed | $55k–$111k |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Sensor | 1 | 50% |
| Smart Cities | 1 | 50% |
| Cloud Computing | 1 | 50% |
| Embedded Systems | 1 | 50% |
| Energy Management | 1 | 50% |

9 industries tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| CTHINGS.CO | Our Cloud Platform gives non-intrusive, secured networking, capturing, and brokering precious mission-critical data from Industrial processes and assets, leading to lower maintenance costs and better decisions. Our solution delivers secured and supervised networking and data fabric with hypervision over remotely deployed microservices and a digitaltwin representation of edge computing assets and IoT applications. | $110.6K | Pre-Seed | Apr 01, 2020 |  |
| CTHINGS.CO | Our Cloud Platform gives non-intrusive, secured networking, capturing, and brokering precious mission-critical data from Industrial processes and assets, leading to lower maintenance costs and better decisions. Our solution delivers secured and supervised networking and data fabric with hypervision over remotely deployed microservices and a digitaltwin representation of edge computing assets and IoT applications. | $54.9K | Pre-Seed | Feb 14, 2018 |  |

2 of 2 investments shown.

## About CTHINGS.CO

VC Fund · Warsaw, Poland

Our Cloud Platform gives non-intrusive, secured networking, capturing, and brokering precious mission-critical data from Industrial processes and assets, leading to lower maintenance costs and better decisions. Our solution delivers secured and supervised networking and data fabric with hypervision over remotely deployed microservices and a digitaltwin representation of edge computing assets and IoT applications.

5 contacts available at CTHINGS.CO.

| Name | Title | Profile |
| --- | --- | --- |
| Arnold Wierzejski | Founder & CEO | https://shizune.co/investors/profile/arnold-wierzejski-a5a0 |
| Aleksandar Bogoevski | CSO | — |
| Barbara Stolorz | COO | — |
| Marcin Urbaniak | Business Development Manager | — |
| Matheus Dias | Head of Growth | — |

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## FAQ

### What does Arnold Wierzejski invest in?

Arnold Wierzejski invests primarily in Sensor, Smart Cities and Cloud Computing startups, most often at Pre-Seed stage. Most of the 2 investments tracked by Shizune back companies in Poland. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Arnold Wierzejski's check size?

Arnold Wierzejski typically joins rounds of $55k–$111k at Pre-Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Arnold Wierzejski participates in.

### How do I contact Arnold Wierzejski?

Public channels for Arnold Wierzejski include LinkedIn and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did Arnold Wierzejski last invest?

The most recent investment recorded for Arnold Wierzejski closed in Apr 2020. 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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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