Guillaume Isautier, France | Chambers Profiles

Regional Rankings
Global
Asia-Pacific
Brazil
Canada
Europe
France
Germany
Greater China Region
Latin America
UK
UK Bar
USANew
Specialist Rankings
NewLaw
Crisis & Risk Management
FinTech
High Net Worth
Litigation Support
Spotlight Rankings
USA: Spotlight
Chambers USA 2025 is live
Discover the top ranked law firms and lawyers across the USA.

View rankings
Articles
Global Practice Guides
Expert Focus
Diversity, Equity and Inclusion
Legal Articles
Events
Guide Launch Dates
Upcoming Events
Browse All Events
Event Sponsorship
About Our Events
DEI Events
Chambers USA 2025 is live
Discover the top ranked law firms and lawyers across the USA.

View rankings
Amplify your presence
Profile Platform
Amplify your ranking and be more discoverable
Includes:

Online Profile

Referee Management

Research Analytics

Marketing Toolkit

Plaques
Improve your performance
Insight
Improve your ranking with unique market insight
Includes:

Client and Market Intelligence

Client Intelligence

Rankings Data Hub

Business Intelligence
Showcase your expertise
Global Practice Guides Contributions
Highlight your subject matter expertise
Expert Focus
Provide commentary on key legal matters
In-depth Overviews
Events Sponsorship
Global Practice Guides
View our latest publications
Elevate your talent strategies
Chambers TalentNew
Access a range of ways to gain valuable insights to inform talent strategies
Leading TeamsNew
Heighten your understanding of and identify the key drivers of talent retention and motivation
Chambers Student
Chambers Associate
Chambers USA 2025 is live
Discover the top ranked law firms and lawyers across the USA.

View rankings
Submissions
Guide Launch Dates
Methodology
Research Schedule
Research Team
Submissions Process
Chambers USA 2025 is live
Discover the top ranked law firms and lawyers across the USA

View rankings
Help
My Account

Ranked in 1 Practice Areas

4

Band 4

Corporate/M&A: High-end Capability

France

11 Years Ranked

Ranked in Guides

About

Provided by Guillaume Isautier

France

Practice Areas

Guillaume is a partner in the Mergers & Acquisitions practice in France. He advises domestic and international clients in a wide variety of M&A transactions, including purchases and sales of listed and non-listed companies, strategic mergers and joint ventures, as well as business carve-out acquisitions and divestitures. His practice focuses on a broad range of industry sectors including banking, telecom, energy and consumer good & retail sectors. He also regularly represents private equity funds.

Chambers Review

Provided by Chambers

Chambers France

Corporate/M&A: High-end Capability - France

4

Band 4

Individual Editorial

Guillaume Isautier has experience acting on joint ventures, cross-border sales and investments for a range of clients, including financial institutions and life sciences companies.

Editorial individuel

Guillaume Isautier a de l’expérience dans les operations de joint ventures, de ventes transfrontalières et d’investissements et accompagne un éventail de clients, notamment des institutions financières et des entreprises du secteur des sciences de la vie.

Learn more about this team❖View ranking table

Strengths

Provided by Chambers

Guillaume has world-class technical expertise in FIG M&A and is extremely helpful and level-headed in all negotiations, with an outstanding ability to anticipate painful discussions.

Corporate/M&A: High-end Capability respondent
Chambers France

He's extremely proactive, available and very reassuring in progressing fast on large transactions, which makes him a big asset.

Corporate/M&A: High-end Capability respondent
Chambers France

An excellent practitioner, Guillaume is very personally involved in the cases he handles. His technical advice is precious and his deal-oriented attitude is very much appreciated.

Corporate/M&A: High-end Capability respondent
Chambers France

Il possède une expertise technique de premier plan en FIG M&A et est très constructif et calme dans toutes les négociations, avec une capacité exceptionnelle à anticiper les discussions compliquées.

Corporate/M&A: High-end Capability respondent
Chambers France

Excellent praticien, Guillaume s’implique très personnellement dans les dossiers qu’il traite. Ses conseils techniques sont précieux et son approche commerciale est très appréciée.

Corporate/M&A: High-end Capability respondent
Chambers France

Il est extrêmement proactif, disponible et très rassurant pour progresser rapidement sur des transactions importantes, ce qui fait de lui un vrai atout.

Corporate/M&A: High-end Capability respondent
Chambers France

Guillaume has world-class technical expertise in FIG M&A and is extremely helpful and level-headed in all negotiations, with an outstanding ability to anticipate painful discussions.

Corporate/M&A: High-end Capability respondent
Chambers France

He's extremely proactive, available and very reassuring in progressing fast on large transactions, which makes him a big asset.

Corporate/M&A: High-end Capability respondent
Chambers France

An excellent practitioner, Guillaume is very personally involved in the cases he handles. His technical advice is precious and his deal-oriented attitude is very much appreciated.

Corporate/M&A: High-end Capability respondent
Chambers France

Il possède une expertise technique de premier plan en FIG M&A et est très constructif et calme dans toutes les négociations, avec une capacité exceptionnelle à anticiper les discussions compliquées.

Corporate/M&A: High-end Capability respondent
Chambers France

Excellent praticien, Guillaume s’implique très personnellement dans les dossiers qu’il traite. Ses conseils techniques sont précieux et son approche commerciale est très appréciée.

Corporate/M&A: High-end Capability respondent
Chambers France

Il est extrêmement proactif, disponible et très rassurant pour progresser rapidement sur des transactions importantes, ce qui fait de lui un vrai atout.

Corporate/M&A: High-end Capability respondent
Chambers France

Filter by

France

Banking & Finance

4

Adrian Mellor

4

Band 4

4

Julien Roux

4

Band 4

5

Michel Houdayer

5

Band 5

5

Thomas Roy

5

Band 5

Capital Markets: Debt

E

Hervé Ekué

E

Eminent Practitioners

1

Julien Sébastien

1

Band 1

4

Diana Billik

4

Band 4

Capital Markets: Derivatives

E

Hervé Ekué

E

Eminent Practitioners

Capital Markets: Equity

2

Olivier Thebault

2

Band 2

Capital Markets: Structured Finance

1

Fabrice Faure-Dauphin

1

Band 1

U

Caroline Marion

U

Up and Coming

Competition/European Law

2

Florence Ninane

2

Band 2

Corporate/M&A: High-end Capability

3

Marc Castagnède

3

Band 3

4

Alexandre Ancel

4

Band 4

4

Guillaume Isautier

4

Band 4

Employment

1

Claire Toumieux

1

Band 1

4

Olivier Picquerey

4

Band 4

Environment

U

Arthur Sauzay

U

Up and Coming

Financial Services Regulation

1

Brice Henry

1

Band 1

3

Dan Benguigui

3

Band 3

20 of 45 results