stp.one | MAGUAR Portfolio Legal Tech Exited

The Platform for the Digital Transformation of Legal Work

stp.one
stp.one is a leading European provider of integrated LegalTech solutions, headquartered in Karlsruhe. Its platform digitalizes the workflows of law firms, insolvency administrators, notaries, and in-house legal departments through an integrated suite of workflow automation, AI-powered document management, ERP, data management, and software-enabled services. With more than 430 employees across 12 locations and over 8,500 customers, stp.one is deeply embedded in the daily workflows of legal professionals.

Facts & Figures

Heaquarter
Karlsruhe, Germany
Industry
Legal Tech
Founded
1993
Maguar Investment
2021
Maguar Exit
2026

How It All Began

Few software markets combine regulatory complexity, mission-critical workflows, and digital transformation as directly as LegalTech. That’s exactly why stp.one stood out to us from an early stage. When Maguar invested alongside Bregal Unternehmerkapital in 2021, STP—with around 1,800 customers and approximately 200 employees—was already an established market leader in insolvency software and, at the same time, an ideal platform for the next phase of growth. Its solutions were deeply embedded in the daily workflows of legal professionals, customer relationships were exceptionally strong, and the potential beyond its core business was clear.

The company’s history made the opportunity even more compelling. STP was founded in 1993 by Gunther Thies and his partner. Over more than two decades as CEO, Gunther Thies built the business into Germany’s leading provider of insolvency law software. For Maguar, this created a unique foundation: deep sector expertise, first-hand operational experience, and a partnership built from day one on a shared understanding of the product, the market, and customer needs.

Over the course of our partnership, that foundation was systematically expanded. Through organic growth, seven strategic acquisitions, and the development of a scalable SaaS platform incorporating cloud and AI capabilities, stp.one evolved from a German niche provider into a pan-European LegalTech platform. Building on its leadership in insolvency software, the company gradually expanded into a comprehensive software suite serving law firms, in-house legal departments, and corporate legal teams across Europe.

Looking Ahead

With its acquisition by Septeo on February 5, 2026, stp.one has entered its next phase of growth. Backed by greater R&D capabilities, significant synergies, and an expanded European footprint, the company is well positioned to further strengthen its role as one of Europe’s leading LegalTech providers.

Over the past few years, we have worked closely with the Maguar and BU teams to build a multi-vertical, synergistic, and scalable SaaS legal tech platform that has become a leading provider in the DACH region.
Oliver Bendig, CEO stp.one

Add-on Acquisitions

04/2021
06/2022
06/2022
06/2022
05/2023
04/2025
06/2025

Ready for the next phase of growth?

Maguar is the private equity partner for B2B software companies in the DACH region—with a clear strategy, operational experience, and a true entrepreneurial spirit.

MAGUAR Capital