Largilliere Finance
- Founded
- 2005-01-01 in Paris, France
- Headquarters
- Paris, France
- Phone
- +33 1 46 10 07 96
Largillière Finance is an independent French investment banking boutique specializing in mid-market mergers and acquisitions (M&A). Founded in 2005 by entrepreneur Paul Bougnoux and business succession expert Tanguy Mantelin, the firm has grown into one of the country's leading M&A advisers for growth companies. Headquartered in Paris, it maintains offices in Bordeaux, Lyon, Nantes, Brussels, and Geneva, employing over 45 professionals. The firm has completed more than 400 transactions and advises owners, shareholders, and executives on company sales, acquisitions, leveraged buyouts (LBOs), debt financing, financial engineering, and strategic advisory. Its sector expertise spans Financial Services, Tech & Digital, Business Services, Industrials, Healthcare, Food & Beverage, Consumer Goods & Luxury, and Leisure, Tourism & Hospitality. In 2025, Largillière Finance was ranked a Leading Player in M&A (€30M–€150M) and Small-Cap LBOs by Leaders League. The firm is the exclusive French member of REACH, an international cross-border M&A network with 400 bankers across 30+ countries.
Detailed Review
History and Founding
Largillière Finance was founded in 2005 in Paris by Paul Bougnoux, a seasoned entrepreneur and investment banker, together with Tanguy Mantelin, an expert in business succession. Over two decades, the firm has built a reputation for executing complex cross-border deals and has grown into one of France's leading mid-cap M&A advisers. It now employs over 45 professionals and has completed more than 400 transactions.
Services and Business Model
The firm positions itself as a one-stop shop for growth-oriented SMEs, mid-cap companies, investment funds, and large corporates. Core services include sell-side M&A, buy-side M&A, LBO/OBO/MBO/MBI transactions, and debt advisory. The firm's approach emphasizes senior-level partner engagement, deep sector specialization, and a collaborative, client-centric methodology. Each transaction benefits from rigorous analysis, disciplined process management, and privileged access to a broad network of corporates, institutional investors, family offices, and lenders. Largillière Finance does not offer proprietary technology platforms; its value lies in advisory expertise and execution capabilities.
Market Position and Recognition
Largillière Finance is consistently ranked among the top mid-cap M&A advisers in France. In 2025, Leaders League named it a Leading Player in M&A (€30M–€150M) and in Small-Cap LBOs. The firm is the exclusive French member of REACH, an international cross-border M&A network with 400 bankers across 30+ countries, strengthening its ability to serve clients internationally while retaining local market knowledge.
Team and Leadership
Key leadership includes Founder and CEO Paul Bougnoux, Co-Founder Tanguy Mantelin, Managing Director Thomas Bureau, Managing Partners Sébastien Aymard and Laurence d'Halleine, and Partner Nicolas Ibanez. The team of more than 45 includes managing directors, partners, and sector specialists with deep expertise in Financial Services, Tech & Digital, Business Services, and other core sectors.
Key Products
Sell-side M&A
Advises on majority or minority stake sales, succession planning, and strategic partnerships.
Buy-side M&A
Supports external growth transactions and build-up strategies, both domestically and cross-border.
LBO/Financial Engineering
Covers leveraged buyouts, OBOs, MBOs, MBIs, valuations, shareholder mediation, and management incentive plans.
Debt Advisory
Advises on corporate financing, LBO financing, and access to a full spectrum of lenders and investors.
Offices & Headcount
45 employees (approx.)
Key Persons
- Paul Bougnoux
Founder & CEO
- Thomas Bureau
Managing Director