The early-stage investment fund.

404 Ventures, a seed-stage fund launched in 2025, is based inside Le Triplex. Focused on high-potential tech startups, the fund writes tickets from 50K to 200K, with roughly 2M in investment capacity per year.

Because we've been in your shoes.

Because Mathieu Tarnus and Julien Trucy have built companies themselves, they know the wins, the doubts and the decisions that mark the entrepreneurial journey. That experience lets 404 Ventures decide fast, offer simple terms and give every founder concrete support, backed by operational expertise and a network built on trust.

Not. Funded. Yet.

Backed by its own capital, 404 Ventures invests for the long term. With no pressure to exit, the fund favors fast decisions, aligned interests and lasting support.

At the helm, Julien Trucy

Managing Director of 404 Ventures, a former investor and entrepreneur, Julien combines financial expertise with hands-on operational support for startups.

Get in touch

Early-stage

Investing from a company's very first chapters.
50 to 200K

With the capacity to back later rounds.
Europe-wide

Opportunities sourced across Europe.
Multi-sector

Tech, Consumer, Healthcare, Fintech... and beyond.

The early-stage investment fund.

Because we've been in your shoes.

Not. Funded. Yet.

At the helm, Julien Trucy

Early-stage

50 to 200K

Europe-wide

Multi-sector

Does your startup fit our thesis?