Sunstone Advisory — Independent M&A Advisory

20+

Closed transactions

100+

Assessed mandates

15+

Years of experience

Advisory for high-stakes transactions — M&A, exits, fundraising and ownership transitions.

Those 20+ transactions span three mandate types

From large-cap flagship investments to mid-market acquisitions, disposals, add-ons, financings and fundraisings — with the perspective of someone who has seen deals from both sides of the table.

Services

01

M&A Advisory
Buy & Sell

  • Process preparation and management
  • Due diligence oversight and review
  • Valuation, structuring and financing
  • Negotiation and documentation
  • Closing
02

Portfolio Work
& Exit Support

  • Value creation execution
  • Add-on acquisitions
  • Investor and board interactions
  • Financing & refinancing
  • Equity story and BP refinement
  • Exit preparation and process
03

Fundraising
Advisory

  • Process drive and execution
  • Equity story and materials
  • Q&A preparation and management
  • Investor follow-up and tracking
  • Term sheet and documentation

Why Sunstone

A critical sounding board

Beyond process and deliverables, we challenge analysis, pressure-test assumptions and sharpen investment cases — whether assessing an opportunity or preparing for investor scrutiny.

Hands-on approach

Not just advising, but actively involved. We structure, negotiate, drive and decide together. Every mandate handled directly — no layers, no dilution.

Independent and fully aligned

No conflicts of interest, no proprietary products to push, no cross-selling agendas — fully aligned with your objectives.

The experience behind the numbers

Marine Charbonnier

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.

Deutsche Bank Carlyle Dauphine

Philosophy

Rigorous in execution. Pragmatic in approach. Easy to work with.

Let's talk.

Based in Paris, France. Working globally. Reachable in French and English.

VersionABCDD✦EFGHIJKLMN
Structureabcdefghij