Cross-border M&A and performance execution
ONIX Associates is an independent cross-border M&A advisory boutique supporting SMEs, multinationals and investment funds across France and the Benelux (Flanders, Wallonia, Brussels and The Netherlands).
We combine M&A execution with HR transformation and hands-on delivery—implemented locally to secure measurable performance improvement.
Cross-border M&A. Local execution. Measurable performance
We combine M&A execution with HR transformation and hands-on delivery—implemented locally to secure measurable performance improvement.
Cross-border M&A. Local execution. Measurable performance


Mergers & Acquisitions
We advise shareholders, founders, management teams and investors on mid-market transactions, from preparation to negotiation and closing—especially in cross-border Benelux–France contexts.
Typical services:
- Sell-side advisory (structured process, value maximisation, execution control)
- Buy-side advisory (target search, deal thesis, valuation/terms support)
- Post-deal integration & value capture (100-day plan, synergy tracking, governance)

HR Transformation
We help organisations strengthen structure, leadership and HR execution—so performance improvements actually stick. We intervene in transformation contexts: growth, integration, reorganisation, performance pressure or leadership renewal.
Typical topics:
- HR diagnostic (audit) & operations (governance, HR process optimisation, HR data/KPIs)
- Talent & key-role recruitment (search & selection, onboarding/90-day plan)
- Transformation & performance improvement (company reorganisation, workforce reduction, footprint & site closure, performance improvement plan)
Why clients choose ONIX
- Cross-border & multi-regional expertise Benelux-France
Hands-on understanding of stakeholders, languages and business cultures across Benelux and France. - Seasoned managers with an operational track record
Senior-led, hands-on teams that drive decisions and implementation—not just recommendations. - End-to-end support from strategy & deal execution to integration and HR alignment
Continuity from deal thesis to delivery, with clear governance, ownership and measurable outcomes
How we work
Our method is built on a structured, pragmatic and execution-driven approach that first clarifies strategic objectives, then translates them into a concrete action plan, and finally drives disciplined implementation to achieve tangible and measurable results.
Clarify the objective
Context, stakeholders, constraints
Build the plan
Priorities, owners, timeline, governance
Drive delivery
Progress, KPIs, risks and course correction