M&A Advisory
Buy & Sell
Buy & Sell
- Process preparation and management
- Due diligence oversight and review
- Valuation, structuring and financing
- Negotiation and documentation
- Closing
Marine Charbonnier built Sunstone from the inside of both investment banks and private equity firms. Here is what that means for your transaction.
Every advisory relationship is shaped by the advisor's vantage point. Most have seen deals from one side only. Marine has seen them from both — and that changes everything.
A dual education in political economics and finance at two of France's most rigorous institutions. The analytical framework that would later make the difference when both sides of the table needed to be understood at once.
As an Associate in Deutsche Bank's Investment Banking division, Marine was in the engine room of transaction execution. Valuations built from first principles. Financial models tested under pressure. Seller processes run from mandate to closing.
"How a deal is structured, financed, and sold — and why most processes are won or lost in the preparation."
At Carlyle's European Private Equity fund, the lens shifted entirely. As Senior Associate, Marine evaluated over a hundred acquisition opportunities, negotiated terms, managed portfolio companies, and ultimately prepared and led exit processes — sitting on the other side of every banker pitch she had once given.
"What investors are actually looking for — and the gap between what sellers present and what buyers need to hear."
Sunstone Advisory is built on the conviction that the best transaction support comes from having been on both sides of the table. Not just knowing how processes work, but understanding how investors actually think, what they challenge, and what makes them move.
"A transaction partner who has structured the deal you are selling, and sat in the room where it would be bought."
A decade in investment banking and private equity — first structuring and executing deals at Deutsche Bank, then assessing, negotiating, owning and selling them as an investor at Carlyle's European Buyout fund. Over a hundred opportunities assessed and 20+ closed.
Sunstone Advisory is built on that experience, and the conviction that the best transaction support comes from understanding not only how processes work, but how investors really think.
Rigorous in execution.
Pragmatic in approach.
Easy to work with.
Based in Paris, France. Working globally.
Reachable in French and English.