Gilles Mattelin

TLDR

Gilles Mattelin is Managing Partner of 100IN, a EUR 12M pre-seed fund co-founded with Jorn Vanysacker following their LexisNexis exit from Henchman in 2024, with two prior acquisitions to his name.

Overview

Gilles Mattelin has achieved two acquisitions before the age of 40, making him one of the more prolific exits-to-fund operators in the Belgian tech market.

His first exit came at Intuo, a Ghent-based HR Tech and performance management platform that Gilles co-founded. Intuo was acquired by Unit4 in March 2019. At Intuo, Gilles served as Co-Founder and VP Sales, building the commercial side of the platform.

After Intuo, Gilles co-founded Henchman alongside Jorn Vanysacker and Wouter Van Respaille during the COVID pandemic, launching the product in June 2021. Henchman is a Ghent legal AI company that helps lawyers search, reuse, and draft contracts faster using AI-powered clause retrieval from a firm's own document history. The company raised EUR 6.5M Series A in 2023 and was acquired by LexisNexis in 2024, launching as Lexis Create+.

Following the Henchman exit, Gilles and Jorn Vanysacker formalized their investment activities into 100IN, a EUR 12M pre-seed fund targeting Belgian and European product-focused startups with EUR 100K checks. The fund aims to back 100 companies. Julie Capiau joined as a third partner.

Gilles also founded Tout Bien Pils, a Belgian craft beer brand, reflecting a broader entrepreneurial curiosity beyond pure tech. He has invested in more than 20 startups over his career.

Earlier in his career, Gilles was Business Development Manager at Medufy, an e-learning platform for healthcare professionals.

Career History

• Managing Partner at 100IN (2024 - present), EUR 12M pre-seed fund, EUR 100K tickets, 100 target companies
• Co-CEO & Co-Founder at Henchman (2020 - 2024), legal AI, acquired by LexisNexis 2024
• Founder at Tout Bien Pils (craft beer brand, ongoing)
• Co-Founder & VP Sales at Intuo (HR Tech / performance management, acquired by Unit4 March 2019)
• Business Development Manager at Medufy (e-learning, healthcare)

Education

• Finance Management, Vlerick Business School
• Finance / Business, Flanders Business School (FBS)

About

Gilles operates as a hands-on commercial founder who builds product-led companies with strong sales cultures. His two SaaS exits, in HR Tech and legal AI, demonstrate a consistent ability to find enterprise software niches with acquisition-grade value. The 100IN pre-seed model reflects his belief that Belgium needs more early-stage capital density.

Notes

Connected to Emiel Huughe and the broader Ghent startup network. The Tout Bien Pils venture shows a willingness to operate in consumer and brand alongside tech investing. Active investor in 20+ startups across his career.