Sunstone Advisory
Independent M&A Advisor
Founder
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.
Most advisors have seen deals from one side of the table — as banker or investor. Marine has worked both sides, which means understanding not only how processes are run, but how the people across the table actually think.
Why Sunstone
"The best transaction support comes from understanding not only how processes work, but how investors really think."
Sunstone Advisory is built on that conviction. Founded to bring both sides of the table — the banker's discipline and the investor's perspective — to founders, boards and sponsors navigating the moments that change ownership, capital structure and direction.
What I do
Three areas of engagement — each a direct extension of the experience built across Deutsche Bank and Carlyle.
Track record
20+ transactions closed alongside founders, boards, and sponsors — from large-cap flagship investments to mid-market acquisitions, disposals, add-ons, financings and fundraisings.
Every mandate handled directly. No layers, no dilution. A transaction partner embedded in your team, acting as a direct counterpart to management throughout the process.
Why work with me
Not a firm. A partner. Here is what that means in practice.
Years spent structuring deals at Deutsche Bank, then sitting on the other side at Carlyle — assessing, negotiating, owning and selling. That dual vantage point is rare and consequential.
Beyond process and deliverables, I challenge analysis, pressure-test assumptions and sharpen investment cases — whether assessing an opportunity or preparing for investor scrutiny.
No conflicts of interest, no proprietary products to push, no cross-selling agendas. Independent and fully aligned with your objectives — nothing else.
Based in Paris, France. Working globally. Reachable in French and English.