Guillaume Pierson
About Guillaume Pierson
Guillaume Pierson is a lawyer based in Lyon, FR and has been recognized in The Best Lawyers in France™ since 2020. Guillaume Pierson is recognized in the following practice areas:
- Lyon, France
- Capital Markets Law
- Mergers and Acquisitions Law
Current Firm: Lexcase
Location: Lyon, FR
It takes just a few minutes to optimize your profile for clients looking to engage and lawyers who are ready to refer.
Activate your profile and highlight why your peers recognized in Best Lawyers today.
Nearby Lawyers
Séverine BRAVARD has developed recognized expertise in : mergers and acquisitions, on both the legal and tax aspects national and international restructurings of groups of companies, on both the legal and tax aspects financing and banking law on behalf of managers or banking institutions, in the context of the preparation and negotiation of banking documentation (structured financing – mezzanine debt – asset financing and others). She was elected by her peers as one of the ...
Amaury DUMAS-MARZE is a partner within the « Distressed companies - Restructuring » department. Amaury assists distressed companies, administrators and judicial representatives, as well as rescuers. More specifically he works : with distressed companies : facing either preventive (ad hoc mandate, conciliation), or collective insolvency proceedings (safeguard, judicial recovery), with court-appointed receivers and trustees in the context of insolvency proceedings carried out under ...
Mathieu Hugueville is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Mathieu, who practices law in Lyon, France, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mathieu is held by other top lawyers in the same geographic and legal practice area.
Pierre-Jean FERRY is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Pierre-Jean, who practices law in Lyon, France, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Pierre-Jean is held by other top lawyers in the same geographic and legal practice area.
Pauline Ducoin is a top attorney recognized by Best Lawyers in the practice area(s) of Information Technology Law and Privacy and Data Security Law. Pauline, who practices law in Lyon, France, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Pauline is held by other top lawyers in the same geographic and legal practice area.
Jean-François DEFUDES is partner and co-head of the “Corporate taxation” department. His professional career has enabled him to acquire solid expertise in the following areas : Corporate and group taxation (restructuring, corporation tax, tax consolidation, VAT, local taxes, etc.) Mergers and acquisitions and restructuring operations (M&A) Taxation of executives (remuneration, capital gains, dividends, IFI) Tax audit and litigation International taxation Tax demateriali...
Jean-Jacques Fournier is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Jean-Jacques, who practices law in Lyon, France, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jean-Jacques is held by other top lawyers in the same geographic and legal practice area.
Delphine Monnier is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Delphine, who practices law in Lyon, France, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Delphine is held by other top lawyers in the same geographic and legal practice area.
Maud Perilli is a top attorney recognized by Best Lawyers in the practice area(s) of Insolvency and Reorganization Law and Labor and Employment Law. Maud, who practices law in Lyon, France, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Maud is held by other top lawyers in the same geographic and legal practice area.
David Blanc is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. David, who practices law in Lyon, France, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David is held by other top lawyers in the same geographic and legal practice area.
Explore and Learn
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Can a Green Card Be Revoked?
by Bryan Driscoll
Revocation requires a legal basis, notice and the chance to respond before status can be taken away.
What Is the Difference Between a Will and a Living Trust?
by Bryan Driscoll
A practical guide to wills, living trusts and how to choose the right plan for your estate.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.
New Texas Family Laws Transform Navigating Divorce, Custody
by Bryan Driscoll
Reforms are sweeping, philosophically distinct and designed to change the way families operate.
The 2026 Best Lawyers Awards in Chile, Colombia and Puerto Rico
by Jamilla Tabbara
The region’s most highly regarded lawyers.