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M&A Advisory
Buy & Sell
- Process preparation and management
- Due diligence oversight and review
- Valuation, structuring and financing
- Negotiation and documentation
- Closing
Independent Advisory · Paris
M&A, exits, fundraising and ownership transitions.
Discuss your projectStone
Rigour &Every engagement is built on precision — rigorous analysis, airtight process management, and a relentless focus on the details that determine outcomes.
Sun
Clarity &Complex transactions need clear thinking under pressure. We help clients cut through noise, understand the real levers, and move with conviction.
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Buy & Sell
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Exit Support
03
Capital & Growth
Experienced partner
20+ transactions closed across M&A advisory and private equity — from large-cap flagship investments to mid-market acquisitions, disposals, add-ons, financings, fundraisings.
A critical sounding board
Beyond process and deliverables, we challenge analysis, pressure-test assumptions, sharpen investment cases, to help clients take well-informed decisions.
Hands-on approach
Not just advising, but actively involved. We structure, negotiate, drive and decide together. Every mandate is handled directly with no layers or dilution.
Alignment
No conflicts of interest, no proprietary products to push, no cross-selling agendas — independent and fully aligned with your objectives.
Marine has been working across investment banking and private equity since 2017 — first structuring and executing deals at Deutsche Bank, then assessing, negotiating, owning and selling them as an investor at Carlyle within their European Buyout fund.
Sunstone Advisory is built on her experience, and the conviction that the best transaction support comes from not only understanding how processes work, but also how investors really think.
We work with founders, executives and investors on complex, high-stakes situations. Every conversation starts in confidence — in French or English.
Based in Paris, France. Working globally.
marine@sunstoneadvisory.fr