# STS Ventures GmbH

STS Ventures GmbH is a Single Family Office based in Cologne, Germany.

## Overview

- **Organization type:** Single Family Office
- **Headquarters:** Cologne, Germany
- **Region:** Europe
- **Address:** Cologne, Germany
- **Founded:** 1999
- **Assets under management:** Undisclosed
- **Website:** sts-ventures.de
- **LinkedIn:** https://www.linkedin.com/company/sts-ventures-gmbh/

## Regulatory record

- **Reports private funds:** No

## About

Stephan Schubert established STS Ventures after founding and selling companies such as OnVista, Ligatus and IS.Teledata. The firm operates as his single-family office vehicle while functioning as an early-stage investor. Wealth origin traces directly to those exits in German online services. STS Ventures targets pre-seed and seed rounds in the DACH region. It commits €200k–€1m initially and follows on to a €5m maximum per company. Asset classes include enterprise software, digital health, climate technology and fintech. Confirmed positions include JustWatch, ottonova, Emma – The Sleep Company, Baqend and Klima.metrix. The firm also holds real-estate assets through STS Real Estate GmbH in Cologne. Geographic focus remains Germany, Austria and Switzerland. The team comprises six professionals in Cologne. Stephan Schubert serves as Managing Partner alongside Partner Oliver Kaul and four additional investment and operations staff. No additional offices are disclosed. Stephan Schubert Stiftung operates as the associated philanthropic vehicle. No operational events from the last 24 months appear in public records. The structure combines family-office capital with venture deployment. Schubert participates directly on boards and supplies founder-level feedback rather than delegating to external managers. This model produces co-investment opportunities alongside other angels and early VCs while maintaining full discretion over follow-on decisions.

## Sectors

- Enterprise Software
- Digital Health
- ClimateTech
- FinTech

## People

- Stephan Schubert — Managing Partner
- Oliver Kaul — Partner
- Friederike Wolf — Executive Assistant
- Philipp Hauptmann — Analyst
- Yannick Laux — Analyst
- Niklas Boehlke — Manager

## Questions

### Who runs investment decisions at STS Ventures GmbH?

Stephan Schubert leads decisions as Managing Partner. Oliver Kaul serves as Partner and participates in sourcing and monitoring.

### How does STS Ventures source proprietary deal flow?

Schubert leverages his network from prior exits and board seats. The firm also receives inbound opportunities through Business Angels Netzwerk Deutschland membership.

### Does STS Ventures participate in fund commitments or only direct deals?

The firm makes only direct equity investments. It does not commit to external venture funds.

### What investment stages does STS Ventures typically target?

Pre-seed and seed rounds form the core focus. Follow-on rounds occur up to a €5m total per company.

### Does STS Ventures maintain philanthropic structures, and how are they separated?

Stephan Schubert Stiftung exists as the separate philanthropic entity.

### What is STS Ventures known posture on co-investments alongside external GPs?

The firm frequently joins rounds as lead or largest investor and welcomes co-investment with other angels.

## Related profiles

- [StreetEdge Capital](https://altss.com/profile/streetedge-capital)
- [Studer Family Office](https://altss.com/profile/studer-family-office)

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Last updated: 2026-06-03T20:00:00.000Z

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