LAWYER PROFILE

Thiago Giantomassi

Brazil 2026

Demarest Advogados

Ranked in 5 practice areas

Capital Markets: Debt

Brazil

11 years ranked

Capital Markets: Equity

Brazil

11 years ranked

Agribusiness

Brazil

11 years ranked

Environmental, Social & Governance (ESG)

Brazil

4 years ranked

Investment Funds

Brazil

2 years ranked

About

Provided by Demarest Advogados

Brazil: Industries & Sectors

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

Brazil: Transactional

Practice Areas

Agribusiness

Alternative Investments

Banking and Finance

Blockchain and Digital Assets

Capital Markets

ESG Environmental, Social and Governance

Financial Market

Investment Funds and Asset Management

Listed Companies

Mergers and Acquisitions

Real Estate

Restructuring and Insolvency

Career

Partner of Demarest’s Capital Markets and Mergers and Acquisitions practices, Thiago Giantomassi holds a master’s degree from the University of São Paulo (USP). He focuses his practice in corporate finance and negotiation with companies, especially in the agribusiness, alternative investment, infrastructure and financial services industries. He advises investment banks, private equity firms, publicly and closely-held companies, controlling shareholders, investors, intermediaries and advisors in domestic and international operations in a variety of economic sectors. Thiago has been listed in leading local and international publications as a reference in his field.

Professional Memberships

Member of Lex Mundi’s Cross Border Transactions Committee

Chambers Review

Provided by Chambers

Chambers Brazil: Transactional

Capital Markets: Debt - Brazil

Band 2

Individual Editorial

Thiago Giantomassi is widely recognised for his extensive contributions to the capital markets. He provides strategic advice to clients on the issuance of agribusiness certificates and debentures, as well as on share offerings and tender offers.

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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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Chambers Brazil: Industries & Sectors

Agribusiness - Brazil

Band 3

Individual Editorial

Respected partner Thiago Giantomassi is frequently seen representing clients from the banking and finance sectors. He is well regarded for his expertise in structuring sophisticated capital markets and finance operations, such as the issuance of Agribusiness Receivables Certificates.

Learn more about this team View ranking table

Strengths

Provided by Chambers

Thiago Giantomassi is a distinguished professional with in-depth technical knowledge.
Capital Markets: DebtChambers Brazil: Transactional
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 Brazil: Transactional
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 Brazil: Transactional
One of Thiago's great differentials is the ability to combine deep technical-legal knowledge with a keen commercial vision.
Environmental, Social & Governance (ESG)Chambers Brazil: Transactional
Thiago combines deep technical expertise with clarity, speed and accessibility. His advice is always sharp and to the point, with a unique ability to simplify complexity without losing nuance.
Environmental, Social & Governance (ESG)Chambers Brazil: Transactional
Thiago Giantomassi is an excellent lawyer. He is always willing to contribute with new ideas.
Investment FundsChambers Brazil: Transactional