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Our professionals

Managing partner

Pedro Whitaker de Souza Dias

Pedro Whitaker de Souza Dias

Areas of expertise


Pedro Whitaker de Souza Dias has held the position of managing partner since April 2024, having been elected by the firm’s partnership. As an expert in corporate law and M&A, Dias is involved in complex transactions, representing both Brazilian and international clients across the healthcare, agribusiness, and private equity sectors, among various others. He also advises publicly traded companies in regard to M&A transactions and regulatory matters.


With over 25 years at Mattos Filho – including 16 years as a partner – Dias has played a crucial institutional role at the firm since 2016, including as a member of the firm’s executive committee and as head of the financial and strategic planning committees.


Pedro is a former president of the Brazilian Bar Association’s (OAB) Agribusiness Committee, a role he held from 2013 to 2015. He is also currently an adjunct professor of Corporate Law at the Instituto de Ensino e Pesquisa (Insper).


Bachelor of Laws – Pontifícia Universidade Católica de São Paulo (PUC-SP);

Master of Laws (LL.M.) – University of Pennsylvania, USA.


Chambers Brazil – Corporate/M&A (2013 – 2023);

Chambers Global – Corporate/M&A (2012 – 2024);

LACCA Approved – Corporate/M&A (2017 – 2024);

Latin Lawyer 250 – Corporate and M&A (2020, 2022, 2024);

The Legal 500 – Dispute Resolution (2014) and Corporate/M&A (2014 – 2019);

Análise Advocacia 500 – Corporate (2020, 2022 – 2023), São Paulo (2020, 2022), Sugar & Alcohol (2022);

Euromoney Expert Guides – Private Equity (2016; 2022);

IFLR 1000 – Notable Practitioner (2017 – 2023);

Who’s Who Legal Brazil – Private Funds (2016 – 2020), M&A (2016 – 2023);

Who’s Who Legal Thought Leaders Brazil – M&A (2022 and 2023);

Who’s Who Legal Global – M&A and Governance (2020; 2023).

Único. The Mattos Filho news portal

Authored publications

Mattos Filho in the media

With Pedro Whitaker de Souza Dias
The Latin American Lawyer | Iberian Lawyer

Mattos Filho has a new managing partner

Mattos Filho announced that Pedro Whitaker de Souza Dias (pictured) take up his role as the firm’s new managing partner effective Wednesday, April 3. Following a ten-month leadership transition period with former managing partner and firm founder Roberto Quiroga, Dias will now lead the firm’s management for the next three years. His goal is to continue the legacy of the founding partners, strengthen business development, and ensure the firm’s stability and long-term success.

Click here and read the article on The Latin American Lawyer.

Latin Lawyer

Pedro Whitaker de Souza Dias takes helm of Mattos Filho

“When you think that you have nothing else left to achieve, you are wrong: you always need to think about what more can be done,” says Pedro Whitaker de Souza Dias, Mattos Filho’s new managing partner. Instead of resting on his laurels, Dias has his sights set on opportunities and strategic growth for Brazil’s largest law firm.

Dias officially took over as managing partner of the Elite firm today, replacing Roberto Quiroga.

Click here and read the article on Latin Lawyer.


The Legal Industry Reviews

Betting in Brazil: A Promising Outlook for 2024

Brazil has traditionally taken a conservative stance on betting. but recent legal developments in the country have opened up new opportunities for the sector. The Brazilian market has become one of the most attractive for the global betting industry, thanks to the legalization of fixed-odds betting on sports and online games.

Click here and read the article on The Legal Industry Reviews.

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