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Finexx
Matthias Heining's Finexx combines private equity with operational management consulting for German Mittelstand companies from its base in Stuttgart.
Finexx
Finexx was founded by Matthias Heining, a former managing director at BWK GmbH Unternehmensbeteiligungsgesellschaft, who brought operational leadership experience from family-owned companies into the firm's DNA. The team explicitly positions itself as an institutional family shareholder for established Mittelstand businesses across the German-speaking region. Heining is joined by Dr. Markus Seiler, whose executive career spanned family and corporate industrial groups in machinery, plant engineering, and automotive supply. The firm pursues majority and minority positions in companies generating at least €20 million in revenue, with individual investment volumes ranging from €20 million to €200 million. Finexx covers buyouts, growth equity, management buy-ins, succession situations, spin-offs, and restructurings. The model is capital-plus-operating-consulting: Finexx does not interfere in daily operations but provides active commercial and technical management support. The team's operating expertise covers production systems, innovation management, process optimization, and post-merger integration. Geographic focus is the DACH region, with operational support offered on both national and international levels. The core investment team consists of four named professionals. Frank Weller, previously a senior investment manager at BWK for eleven years, leads deal execution and portfolio oversight. Yuliya Rogachevska supports business development and investment management. The firm's website references a press release about a portfolio company, WIDOS Wilhelm Dommer Söhne GmbH, but does not disclose total assets under management or aggregate deployment figures. Finexx's structural distinction is its operating-partner model. The firm is not backed by a single family or institutional LP base; it describes itself as investing independently of individual investors and banks. The two managing directors — Heining on the finance and M&A side, Seiler on the industrial operations side — pair private-equity structuring with deep manufacturing line experience, a split rarely found in German lower-mid-market firms.
General information
Firm type
Private Equity
Year founded
—
AUM
Undisclosed
Location
Region
Europe
Country
Germany
City
Stuttgart
Corporate office
Bolzstraße 3, 70173 Stuttgart, Germany
Principals
Matthias Heining
Founder and Managing Director
Dr. Markus Seiler
Managing Director
Frank Weller
Investment Director
Yuliya Rogachevska
Investment Manager
Sector focus
Frequently asked questions
Who runs investment decisions at Finexx?
Founder and managing director Matthias Heining leads the investment process, drawing on his prior experience as a managing director at BWK GmbH and operational roles in family enterprises. He is joined by managing director Dr. Markus Seiler, who covers industrial and operational due diligence. Investment director Frank Weller manages deal execution and portfolio monitoring.
How does Finexx source proprietary deal flow?
Finexx relies on the personal networks of its senior team, built during nearly 30 years of combined experience in German industry and over twelve years in the private equity sector. The firm targets succession-driven opportunities and complex carve-outs where its blend of M&A and operational expertise differentiates it from purely financial buyers.
Does Finexx participate in fund commitments or only direct deals?
Finexx only makes direct equity investments in operating companies. There is no indication on the firm's website or in public sources that it commits capital to third-party private equity funds.
What is Finexx's known posture on co-investments alongside external GPs?
Finexx invests independently and does not act as a co-investor alongside other private equity firms. Its model is to serve as the sole institutional partner for Mittelstand business owners, structuring bespoke equity and debt solutions from a single source.
Which sectors does Finexx explicitly avoid?
Finexx does not publish an exclusion list. However, the professional backgrounds of its principals — centered on machinery, plant engineering, automotive supply, and technology companies — suggest the firm avoids sectors outside industrial manufacturing and related services.
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