Simpson Thacher & Bartlett LLP

Head of the Firm’s São Paulo office, Grenfel Calheiros advises clients on capital markets and M&A transactions, with a primary focus on Latin America and especially Brazil. His clients have included a range of leading companies, private equity sponsors and investment banks in IPOs and other securities offerings, cross-border acquisitions, and other complex corporate matters. Grenfel spent the first nine years of his career in Simpson Thacher’s New York office. He is currently ranked Band 1 by Chambers Brazil in Capital Markets (International Counsel). Grenfel is fluent in Portuguese.

Partner

Co-Head of Simpson Thacher's Global Capital Markets Practice, Roxane F. Reardon has advised issuers and investment banks on a wide range of public and private capital raises, including pre-IPO series financings and other private capital funding structures, IPOs, follow-ons, equity-linked, debt, and tender and exchange offers, for more than two decades. She regularly advises management and boards of directors on capital solutions, corporate governance matters, disclosure matters, and other general corporate matters.