LAWYER PROFILE

Thiago Giantomassi

Global 2026

Demarest Advogados

Ranked in 4 practice areas

Capital Markets: Debt

Brazil

2 years ranked

Capital Markets: Equity

Brazil

2 years ranked

Environmental, Social & Governance (ESG)

Brazil

4 years ranked

Investment Funds

Brazil

2 years ranked

About

Provided by Demarest Advogados

Global

Practice Areas

Agribusiness; Alternative Investments; Capital Markets; ESG - Environmental, Social and Governance; Financial Market; Mergers and Acquisitions; Real Estate

Career

Partner of Demarest's Capital Markets, Corporate Finance and M&A areas, Thiago Giantomassi has a Bachelor's Degree in Law and a Master's Degree by the University of São Paulo (USP). He concentrates his activities in corporate finance and business with companies, focusing on Capital Markets, Infrastructure and Mergers and Acquisitions. He advises investment banks, private equity firms, closely held companies and publicly held companies, controlling shareholders, investors, intermediaries and advisors in domestic and international operations in a variety of sectors of the economy.

Professional Memberships

Member of Lex Mundi’s Cross Border Transactions Committee

Chambers Review

Provided by Chambers

Chambers Global Guide

Capital Markets: Debt - Brazil

Band 2

Individual Editorial

Thiago Giantomassi is particularly recognised for his strong focus on the agribusiness sector. His work encompasses primary and secondary offerings of shares and issuance of debentures. He is especially active in the issuance of agribusiness certificates.

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Capital Markets: Equity - Brazil

Band 3

Individual Editorial

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Environmental, Social & Governance (ESG) - Brazil

Band 4

Individual Editorial

Capital markets partner and agribusiness specialist Thiago Giantomassi advises clients from the agribusiness and energy sectors, among others, in sophisticated ESG finance mandates. He is well regarded for dealing with sustainability-linked bonds and carbon credits.

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Investment Funds - Brazil

Band 5

Individual Editorial

Thiago Giantomassi is an experienced practitioner, renowned for his capital market and investment funds practice. He is frequently sought out by important clients to represent them in sophisticated deals, and is widely regarded for his solid regulatory expertise.

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Strengths

Provided by Chambers

Thiago brings technical expertise that gives us confidence. He is highly accessible and always available when needed. His friendly, approachable style and quick turnaround make all the difference.
Capital Markets: DebtChambers Global Guide
Thiago excels in strategic thinking, with strong commercial sense. Solution-oriented, pragmatic and experienced, he leverages knowledge and insight to resolve challenges effectively.
Capital Markets: DebtChambers Global Guide
Thiago Giantomassi is a distinguished professional with in-depth technical knowledge.
Capital Markets: DebtChambers Global Guide
Thiago combines deep technical expertise with clarity, speed and accessibility. His advice is always sharp and to the point, and he has a unique ability to simplify complexity without losing nuance.
Environmental, Social & Governance (ESG)Chambers Global Guide
One of Thiago's great differentials is his ability to combine deep technical-legal knowledge with a keen commercial vision.
Environmental, Social & Governance (ESG)Chambers Global Guide
Thiago Giantomassi is an excellent lawyer. He is always willing to contribute with new ideas.
Investment FundsChambers Global Guide