Thiago Giantomassi

Ranked in 5 Practice Areas

Band 2

Capital Markets: Debt

Brazil

11 Years Ranked

Band 3

Agribusiness

Brazil

10 Years Ranked

Band 3

Capital Markets: Equity

Brazil

11 Years Ranked

Band 4

Environmental, Social & Governance (ESG)

Brazil

4 Years Ranked

Band 5

Investment Funds

Brazil

2 Years Ranked

Ranked in Guides

Global 2025

About

Provided by Thiago Giantomassi

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

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

Chambers Review

Provided by Chambers

Chambers Brazil: Industries & Sectors

Agribusiness - Brazil

Band 3

Individual Editorial

Thiago Giantomassi is a strong practitioner in the agribusiness sector, regularly sought out by 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.

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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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Strengths

Provided by Chambers

Thiago Giantomassi is one of the practitioners that I admire most. His responsiveness and technical skills are incredible.

Agribusiness respondent
Chambers Brazil: Industries & Sectors

An extremely skilled professional with the best knowledge of capital markets in the country.

Agribusiness respondent
Chambers Brazil: Industries & Sectors

Thiago is a super lawyer.

Agribusiness respondent
Chambers Brazil: Industries & Sectors

Thiago Giantomassi is a distinguished professional with in-depth technical knowledge.

Capital Markets: Debt respondent
Chambers 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: Debt respondent
Chambers 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: Debt respondent
Chambers 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) respondent
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) respondent
Chambers Brazil: Transactional

Thiago Giantomassi is an excellent lawyer. He is always willing to contribute with new ideas.

Investment Funds respondent
Chambers Brazil: Transactional

Thiago is a widely recognised professional in his field, leading the practice at Demarest.

Investment Funds respondent
Chambers Brazil: Transactional

Thiago stands out for his solid experience and technical competence, combined with a sharp eye for market innovations.