PX3 Partners

About PX3 Partners

PX3 Partners is an independent pan-European private equity firm headquartered in London, United Kingdom, founded in 2021. The firm is structured as an independent general partner and closed its inaugural fund, PX3 Partners Fund I, in May 2025 at its hard cap of €500 million; combined with co-investment vehicles this brought total assets under management to €1.1 billion. The firm was co-founded by three Managing Partners, Petter Johnsson, Gianpiero Lenza and Sebastien Mazella di Bosco, each with roughly two decades of private equity experience from senior roles in international banking and advisory. As of December 2024 the debut fund was still in market.

Investment thesis

PX3 pursues a mid-market control buyout strategy across Western Europe, investing behind what it calls transformative themes. Sector focus spans business services, consumer and leisure, and industrials. Geography is pan-European with cross-border expansion into North America and Asia. The €500 million size of Fund I implies mid-market equity tickets, with the firm targeting a small number of platform investments. The limited partner base is institutional. The differentiating value-creation lever is a proprietary methodology the firm brands Connected Acceleration, which pairs systematised value-creation playbooks with an external network of operating talent to support management teams on organic and M&A-driven growth.

Recent activity

Recent investments include an internet domain-name management and brand-protection company (2024), an engineered cooling systems business for data centres and industry (2024), an industrial filtration manufacturer (2024) and a cybersecurity and ICT services company (2024 to 2025). No exits have been recorded, as PX3 is a 2021-vintage firm with a debut fund closed in 2025. The platform continues to deploy mid-market control buyout capital across Western European business services, consumer and industrials. Detailed buyer names and multiple data available on Pro at €49/month.