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Maria Castelos
Lawyers profile
Europe 2025
Lawyers profile | Europe 2025: Projects, Private Equity, Corporate/M&A: The Elite, Banking & Finance
Maria Castelos
Ranked in 4 Practice Areas
1

Band 1

Projects

Portugal

18 Years Ranked

1

Band 1

Private Equity

Portugal

19 Years Ranked

1

Band 1

Corporate/M&A: The Elite

Portugal

1 Years Ranked

2

Band 2

Banking & Finance

Portugal

19 Years Ranked

Ranked in Guides
Global 2025

About

Provided by Maria Castelos

Europe

Practice Areas

Maria Castelos divides her practice between Banking and Finance, especially on acquisition, project and structured finance deals, and M&A/Private Equity and Capital Markets, which allows her to take a holistic approach to the advice she gives to Clients as she has a deep understanding of the different aspects of deals. She has long standing experience in advising corporations, asset managers, investors and lenders across different industry sectors, most recently with a particular focus on banking and insurance, infrastructure, aviation, energy, water and telecommunications. With almost thirty years' of experience, she has been consistently recognised in the market as one of the leading practitioners in her main areas of practice.

Career

Lisbon Law School, Catholic University, 1991. LL.M. in Banking and Finance, University College London, 1994-95. Post-graduate Degree in Securities Law, University of Lisbon, Faculty of Law, 1998. Trainee at PLMJ, A.M.Pereira, Sáragga Leal, Oliveira Martins, Júdice & Associados, 1991-93. Member of the Portuguese Bar Association, 1993. Associate and Senior Associate at PLMJ, A.M.Pereira, Sáragga Leal, Oliveira Martins, Júdice & Associados, 1993-99. Partner at PLMJ, A.M.Pereira, Sáragga Leal, Oliveira Martins, Júdice & Associados, 2000-09. Partner at CS'Associados, 2009.

Professional Memberships

Portuguese Bar Association

Personal

Languages-English, French and Spanish

Chambers Review

Provided by Chambers

Chambers European Guide

Projects - Portugal

1
Band 1
Individual Editorial

Maria Castelos is well versed in handling the financing and restructuring of projects, often through the issuance of bonds. She is experienced in projects across energy, healthcare and transportation sectors.

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Corporate/M&A: The Elite - Portugal

1
Band 1
Individual Editorial

Maria Castelos has an excellent standing in the market as an active adviser on share sales and corporate restructurings. She regularly assists clients in the energy industry.

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Private Equity - Portugal

1
Band 1
Individual Editorial

Maria Castelos stands out for her experience in infrastructure sector investments, having acted for funds on both the buy- and sell-side of high value deals.

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Banking & Finance - Portugal

2
Band 2
Individual Editorial

Maria Castelos holds expertise in corporate restructurings and real estate finance transactions as well as acquisition finance. She also has experience advising investors on the acquisition of NPLs from Portuguese banks.

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Strengths

Provided by Chambers

Maria Castelos is very experienced, competent and has amazing client service.

Projects respondent
Chambers European Guide

Maria Castelos is an excellent lawyer, who is very knowledgeable and able to evaluate problems from the perspective of the client.

Projects respondent
Chambers European Guide

Maria is an excellent professional.

Projects respondent
Chambers European Guide

I think she is outstanding; she is deeply knowledgeable and we have lots of trust in her.

Projects respondent
Chambers European Guide

Maria Castelos is a top lawyer.

Corporate/M&A: The Elite respondent
Chambers European Guide

Maria Castelos offers clients extensive and valuable experience.

Private Equity respondent
Chambers European Guide

Maria Castelos is experienced and has amazing client service.

Banking & Finance respondent
Chambers European Guide

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CS'Associados

Provided by Chambers
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Banking & Finance
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Employment
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Energy & Natural Resources
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4
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Projects
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