Cementing its status as a market-leader, Payet, Rey, Cauvi, Pérez Abogados’ M&A team advises investment banks, insurance companies and private equity firms on national and global M&A, primarily within the energy, healthcare and infrastructure sectors. Well-versed in the transactional, regulatory and tax elements of the practice, the team’s workload includes corporate governance, spin-offs, asset transfers, takeovers and the structuring of corporate vehicles. Industry veteran José Antonio Payet is a first-choice expert for high-profile mandates such as the acquisitions and divestitures of public and private companies, and leads the team alongside Susan Castillo, who also has ample experience in the capital markets space. Juan Antonio Egüez focuses on the financing of projects and companies in regulated sectors, José Cúneo covers mining sector M&A, and Alfredo Chan advises on cross-border M&A and related arbitration. Rafael Ortiz is a go-to for matters concerning mergers in the fintech sector. Principal associate Guillermo Arribas focuses on corporate law, civil law, real estate and arbitration. Since publication, Arribas has been raised to the partnership - effective as of January 2026.
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Profile
Work Department
Corporate law, Mergers and Acquisitions, Financing, Financial Services and Fintech, Capital Markets, Securitizations and Investment Funds
Position
Partner
Career
Susan is a Partner of the firm, specializing in corporate law, mergers and acquisitions, civil law, capital markets law and banking and finance law.
She has extensive experience in mergers, acquisitions and sale of companies and has participated in some of the most important case work in the country in recent years. She has also participated in major financing and capital market operations, both locally and internationally.
Susan was a Guest Associate at the offices of Uría Menéndez in Madrid and Beijing.
Languages
Spanish and English.
Memberships
Lima Bar Association, 2005
Education
- Master of Law and Business (MLB), Bucerius Law School & WHU – Otto Beisheim School of Management, 2012
- Diploma in Mining and Environmental Law, Universidad Peruana de Ciencias Aplicadas, 2007
- Licensed in Law, Pontificia Universidad Católica del Perú, 2004
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Testimonials
Collated independently by Legal 500 research team.
‘Payet is very professional and leading firm in Peru. Our company has been client of Payet since 2021. During this period Payet provided exceptional service.'
‘Jose Cuneo and his team work with our company. Jose is very responsible, professional and very knowledgeable lawyer. He always available to answer questions and provide legal support anytime.’
- The legal team is characterised by always being one step ahead of expectations, with a great ability to think outside the box. They promote internal discussion to gain a better understanding of the problems they face. They are very solid in their legal opinions.’
Key clients
- Pacífico Compañía de Seguros y Reaseguros
- AC Capitales
- Franco-Nevada Corporation
- Carlyle South America Buyout Fund
- The Yokohama Rubber Co
- Organización Terpel
- Scotiabank Perú
- IHS Perú
- SIGMA Sociedad Administradora de Fondos de Inversión
- Marcobre
- Corporación Enerjet
- Canada Pension Plan Investment Board (CPPIB)
Work highlights
Advised Inversiones Centenario in the sale of Minka to Parque Arauco for 381m soles.
Advised Alicorp in the acquisition of the majority of shares of Refínería del Espino.
Advised Pacífico Compañia de Seguros y Reaseguros in an acquisition which reshapes Peru’s insurance and healthcare sectors.