Guillaume Le Masson, Business Attorney in Miami, Florida
Over 13 years of legal practice · focused on Business and M&A
ShareholderatGreenberg Traurig, LLP
Miami, FL
Practicing business in Miami since 2013.
- 13+
- Years practicing
- 1
- Bar admission
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Quick answer
Guillaume Le Masson is a shareholder based in Miami, FL. The practice focuses on Business and M&A. Guillaume has over 13 years of legal experience. Currently practicing at Greenberg Traurig, LLP.
- Based in
- Miami, FL
- Experience
- over 13 years
- Known for
- Business · M&A
- Handles Business and M&A matters from Miami, FL.
- Over 13 years of practice as a licensed attorney.
About Guillaume Le Masson: Guillaume Le Masson is a shareholder based in Miami, FL. The practice focuses on Business and M&A. Guillaume has over 13 years of legal experience. Currently practicing at Greenberg Traurig, LLP.
Areas of practice
Legal matters Guillaume takes on
Guillaume concentrates on business and m&a. Each area below outlines the kind of case Guillaume handles, typical outcomes to expect, and how the intake process starts.
Business cases in Miami, Florida
Guillaume takes business matters in Miami, Florida. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Guillaume agrees to represent you.
M&A cases in Miami, Florida
Guillaume takes m&a matters in Miami, Florida. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Guillaume agrees to represent you.
Biography
Meet Guillaume Le Masson — business lawyer in Miami
Guillaume Le Masson is a shareholder based in Miami, FL. The practice focuses on Business and M&A. Guillaume has over 13 years of legal experience. Currently practicing at Greenberg Traurig, LLP.
Guillaume Le Masson is a member of Greenberg Traurig’s Corporate Practice focusing primarily on financial transactions, particularly in mergers and acquisitions. His clients range from multinational corporations to private equity investors, and his involvement in industries such as technology, energy, health care, banking, and manufacturing equips him with the ability to navigate diverse industrial landscapes.
Guillaume is experienced in M&A and cross-border transactions, representing a range of clients including acquirors, sellers, sovereigns, and financial advisors in mergers, stock deals, asset deals, and joint ventures. Moreover, he has experience with an array of corporate matters beyond M&A transactions, including debt and equity capital markets transactions and corporate governance.
Experience
Representative Matters
• Represented a multinational conglomerate in:
o the sale of certain assets associated with its dental local anesthetic portfolio to a global service provider for the pharmaceutical industry.°
o its acquisition of a global medical technology company.°
o the sale of its gas and flame detection business to an industrial conglomerate.°
o the sale of its communication markets division to a multinational technology company.°
o the acquisition of a safety devices company from a multinational conglomerate.°
o the sale of its electronic monitoring business to a private equity firm.°
• Represented a global steel producer and distributor in its sale of its U.S. operations.°
• Represented a multinational company in the sale of its hardware security module business.°
• Represented a global financial institution in its acquisition of a renewable energy finance company.°
• Represented a global manufacturing company in its acquisition of an advanced software solutions company.°
• Represented a global healthcare distributor in its acquisition of a majority ownership stake in a dental company.°
• Represented a multinational gas solutions company in its acquisition of a supplier of industrial, medical and specialty gases.°
• Represented a multinational beverage company in the combination of its bottling operations.°
• Represented a mining company in connection with its divestment of a local mining business.°
• Represented a European State in connection with the acquisition by a multinational conglomerate of certain power activities of a multinational conglomerate.°
• Represented a bank holding company in the formation of a joint venture of its global business travel division.°
• Represented a global investment firm in its minority investment in a digital solutions company.°
• Represented a global marina company in its joint venture for the renovation and operation of a marina.°
• Represented a private equity firm in the sale of the chassis fleet of its portfolio company to a chassis provider to the U.S. intermodal industry.°
• Represented a private equity firm in its acquisition of an automation equipment company.°
• Represented an asset management firm in its acquisition of an advisory firm from a European financial institution.°
• Represented a consumer electronics corporation in the sale of its printer business to a multinational information technology company.°
• Represented a financial company in the context of the sale of third parties’ assets in bankruptcy.°
• Represented a health care company in its sale to a consortium led by private equity firms and a home health care services company.°
• Represented a private equity firm in the sale of a financing portfolio company to a financial institution.°
• Represented an investment company in its reinvestment in a funeral home company.°
• Represented an investment company in the sale of its pharmaceutical company portfolio.°
• Represented a private equity firm in its acquisition of a majority interest in a private equity platform.°
• Represented an investment company in its acquisition of a medical equipment manufacturer.°
°The above representations were handled by Mr. Le Masson prior to his joining Greenberg Traurig, P.A.
Guillaume's approach to business cases
Guillaume Le Masson is a member of Greenberg Traurig’s Corporate Practice focusing primarily on financial transactions, particularly in mergers and acquisitions. His clients range from multinational corporations to private equity investors, and his involvement in industries such as technology, energy, health care, banking, and manufacturing equips him with the ability to navigate diverse…
The kind of cases Guillaume takes
Guillaume reviews new inquiries case-by-case for business and m&a matters in Miami and the surrounding Florida area.
Credentials
Education, bar admissions, and languages
Harvard Law School
LL.M. · 2012
Paris-Sud University Paris XI HEC Paris
M.Sc. International · 2009
Jurisdictions
Guillaume's state bar admissions
New York Florida Par
2013 · ACTIVE
Guillaume studied at LL.M. in Harvard Law School and M.Sc. International in Paris-Sud University Paris XI HEC Paris.
Law school and academic background
Guillaume completed LL.M. in Harvard Law School and M.Sc. International in Paris-Sud University Paris XI HEC Paris. Formal legal training is one signal of substantive knowledge — the day-to-day practice Guillaume runs in Florida is where that training gets applied to real client questions.
Locations
Guillaume Le Masson's office in Miami
Guillaume's primary office is at 333 SE 2nd Avenue, Suite 4400, Miami, FL, 33131. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Guillaume Le Masson
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Schedule your consultationHiring guide
How to hire Guillaume Le Masson — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Guillaume usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Guillaume charges for the initial consult. That fee is credited toward representation if you retain Guillaume's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Guillaume will tell you what matters and what doesn't.
Questions to ask a business attorney in Miami, Florida
A short list to run through before you commit: How many business matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Guillaume
Guillaume discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every business matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Guillaume confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Guillaume's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Guillaume Le Masson
How much does it cost to hire Guillaume for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Guillaume walks through the likely range during the consult so there are no surprises.
Does Guillaume offer a free consultation?
Guillaume charges for the initial consult; that fee is credited toward representation if you retain Guillaume's office. Some business attorneys offer free consults — check Guillaume's current terms during booking.
How long do business cases in Florida typically take?
Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Guillaume gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Guillaume take my case if I'm outside Miami?
Guillaume is licensed in Florida. Matters governed by Florida law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Guillaume will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Guillaume?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Guillaume will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Guillaume accepting new business clients right now?
Guillaume's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Business attorneys serving Miami, Tampa and Orlando in Florida
Guillaume handles business matters throughout Florida. Each city below is a direct link into the search page for verified business attorneys in that community.
- Miami15,918 attorneys
- Tampa9,739 attorneys
- Orlando7,352 attorneys
- Fort Lauderdale6,726 attorneys
- Jacksonville5,497 attorneys
- Tallahassee4,383 attorneys
- West Palm Beach3,699 attorneys
- Boca Raton3,668 attorneys
- Coral Gables3,397 attorneys
- Naples2,155 attorneys
- St Petersburg2,098 attorneys
- Sarasota1,994 attorneys
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