01
M&A Advisory
Buy & Sell
- Process preparation
- Due diligence
- Valuation & structuring
- Negotiation
- Closing
Independent Advisory · Paris
M&A, exits, fundraising and ownership transitions.
Discuss your projectStone
Every engagement is built on precision — rigorous analysis, airtight process management, and a relentless focus on the details that determine outcomes. We bring the discipline of institutional finance to every mandate, regardless of size.
Sun
Complex transactions need clear thinking under pressure. We help clients cut through noise, understand the real levers, and move with conviction. The best decisions come from seeing both sides of the table — and we have.
What we do
01
Buy & Sell
02
Exit Support
03
Capital & Growth
Why Sunstone
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.
The founder
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.
Get in touch
We work with founders, executives and investors on complex, high-stakes situations. Every conversation starts in confidence.
Discuss your project