Júlia Castellari Ribeiro OAB/SP No. 475602

Corporate & M&A Lawyer — São Paulo

Corporate law,
structured with precision.

Brazilian attorney (OAB/SP) focused on Corporate Law, Contracts & Capital Markets — from day-to-day corporate housekeeping to the architecture of the deal.

CorporateM&AContractsCapital Markets

Júlia Castellari Ribeiro, corporate and M&A lawyer, in a warm editorial portrait.
Júlia Castellari Ribeiro São Paulo · BR
§ 01

Positioning

A career built entirely within corporate law & contracts.

corporate lawyer with a career built entirely within Corporate Law and Contracts, with strong exposure to Capital Markets and M&A. From day-to-day corporate housekeeping — corporate acts, books, governance — to sophisticated matters such as shareholders' agreements, holding structures, succession planning and fundraising.

Experience spanning a publicly-listed company's IPO, investment agreements and structured operations at a startup, due diligence, and CVM (the Brazilian SEC) compliance. The work sits where governance, contracts and capital markets meet — and is suited to in-house legal (corporate) or law-firm roles in Corporate, M&A, Contracts and Capital Markets at the mid level (Pleno).

  • From the day-to-day corporate to the sophisticated deal.
  • Where governance, contracts and capital markets meet.
§ 02

Areas of Practice

  • Corporate Law

    Corporate acts for limited liability companies (Ltda.) and closely-held corporations (S.A.); corporate operations such as spin-offs and conversions of corporate type; regularization of corporate books; governance structuring.

  • M&A & Structured Operations

    Assembly of structured operations; corporate and tax studies to define the best structure per client objective; due diligence; review of the transaction history of corporations (S.A.).

  • Contracts

    Drafting and negotiation of investment agreements with individual and corporate investors; SaaS contracts review and negotiation; service agreements for technology companies; amendments, powers of attorney, term sheets and conditions-precedent checklists.

  • Capital Markets

    Full participation in a group holding's IPO; control of obligations toward shareholders and investors; CVM compliance — material facts, market notices and the reference form.

  • Wealth & Succession Planning

    Patrimonial holdings, donation instruments and shareholders' agreements in a succession context.

  • Governance

    Robust shareholders' and quotaholders' agreements; control of directors' and officers' mandates; organization of corporate books.

§ 03

Experience

  1. Sep 2025 — Present

    São Paulo

    Corporate & Contracts

    Peluso, Guaritá Borges e Rezende Advogados

    Associate Lawyer · Advogada Plena

    • Drafting routine corporate acts for limited liability companies (Ltda.) and closely-held corporations (S.A.).
    • Corporate operations: spin-offs and conversion of corporate type.
    • Analysis of S.A. transaction history to regularize corporate books.
    • Drafting shareholders' and quotaholders' agreements to structure robust governance.
    • Wealth & succession planning: patrimonial holdings, donation instruments and succession-context agreements.
    • Review of service agreements for technology companies.
    • Drafting legal documents: extrajudicial notices, settlement terms, contract amendments, contracts and powers of attorney.
    • Leading registration processes for corporate acts.
    • Direct client contact and meetings for alignment and clarification.

  2. Dec 2023 — Sep 2025

    São Paulo

    Corporate, Contracts & Capital Markets

    Monteiro, Rusu, Cameirão e Bercht Advogados

    Junior Lawyer · Advogada Júnior

    • Owned the day-to-day corporate work of a startup: control of directors' and officers' mandates.
    • Drafting medium- and high-complexity corporate acts; coordinating registration.
    • Control of obligations toward shareholders and investors.
    • Drafting and negotiating investment agreements with individual and corporate investors.
    • Conditions-precedent checklists for investment agreements.
    • Direct contact with directors and shareholders; coordinating client and investor meetings.
    • Review and negotiation of the startup's SaaS contracts.
    • Assembly of structured operations; corporate and tax studies to define the best structure.

  3. Mar 2022 — Dec 2022

    São Paulo

    Corporate

    Almeida Prado & Hoffmann Advogados Associados

    Junior Lawyer · Advogada Júnior

    • Day-to-day corporate work for limited liability companies.
    • Drafting low- and medium-complexity contracts.
    • Drafting legal opinions on corporate matters.
    • Analysis of corporate structures for clients.

  4. Apr 2019 — Apr 2021

    São Paulo

    Corporate & Compliance

    Hidrovias do Brasil S.A.

    Legal Intern

    • Day-to-day corporate work across all group companies: control of board and officer mandates.
    • Drafting low- and medium-complexity corporate acts; coordinating registration.
    • Assisting with the reference form (formulário de referência).
    • Control and drafting of group powers of attorney; organizing corporate books.
    • Assisting with CVM compliance; drafting material facts and market notices.
    • Participation in audits; analysis of NDAs.
    • Control and amendment of stock option agreements.
    • Participation in the entire IPO process of the group holding.

  5. Aug 2018 — Feb 2019

    São Paulo

    Corporate

    DDSA – De Luca Derenusson Schuttoff e Azevedo Advogados

    Legal Intern

    • Drafting low-complexity corporate acts.
    • Participation in audits.
    • Research of legislation and case law.
    • Coordinating registration of corporate acts.
§ 04

Selected Highlights

IPO experience

Participated in the full IPO process of a listed group's holding (Hidrovias do Brasil S.A.).

Capital markets & CVM compliance

Material facts, market notices and the reference form.

Startup corporate counsel

Owned day-to-day corporate work and supported investment rounds.

M&A & structured operations

Corporate and tax structuring to define the best route per objective.

7+ years in corporate law

Since 2018, including internships across listed companies and firms.

Fluent in English

Advanced level with an international academic background.

§ 05

Education & Languages

Education

  1. Postgraduate (Lato Sensu) in Business / Corporate Law

    Fundação Getulio Vargas (FGV)

    Mar 2023 — Jun 2024

  2. Bachelor of Laws (LL.B.)

    Universidade Presbiteriana Mackenzie — Higienópolis Campus

    Aug 2016 — Jan 2022

Languages & International

  • PortugueseNative
  • EnglishAdvanced
  • High School exchange — Vancouver, Canada (2014)
  • English course — Embassy English, Oxford, UK (2014)
  • Legal English — Mackenzie Language Center (2017)
  • Advanced English — ICBEU, São José dos Campos (2006–2013)