Rebecca Sim

Cassels Brock & Blackwell LLP

My Contact Information

Cassels Brock & Blackwell LLP
Vancouver, BC
Phone 1: 778-372-6784

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Admission & Qualifications

British Columbia 2019


University of Waterloo, B.A. (Hons.), 2014
Western University, J.D., 2018

Professional Profile

Rebecca Sim is an associate in the Litigation Group at Cassels Brock and Blackwell LLP. Rebecca offers experience on various types of corporate/commercial disputes, with a focus on securities litigation. Rebecca assists clients facing enforcement action by securities regulators and law enforcement at the investigative stage and throughout the enforcement actions on matters involving allegations of securities fraud, insider trading, market manipulation, illegal distributions, discretionary trading and money laundering.

Rebecca graduated from the J.D. program at Western University where she was a member of the Dean’s Honour List and a recipient of the Law Society of Upper Canada Prize. During law school, Rebecca was the researcher for Western Law’s Gale Moot Cup team. Rebecca was an active member of her student community as a co-director of the Western Law Peer Support program, a Teaching Assistant for a Legal Research, Writing and Advocacy class, and a volunteer for both Pro Bono Students Canada and the Sport Solution Clinic.

Representative Matters

Rebecca’s experience includes:

  • Acting for individuals and companies involved in protracted shareholder disputes;
  • Acting for market participants facing various enforcement actions in regulatory and criminal proceedings;
  • Advising resources companies on directors and officers liability and insurance matters; and
  • Advising management on workplace investigations, compliance assessments and the remediation and prevention of cyber breaches and loss of confidential information.


Practice Areas

  • Asset Forfeiture/Restitutio
  • Complex Commercial Litigation
  • Corporate Crime
  • Corporate Governance
  • Crisis Management
  • Cybercrime
  • Government Investigations
  • Insider Trading
  • Internal Investigations
  • SEC Enforcement
  • Securities & Futures Regulation
  • White Collar Crime