Robert L. Gain

Corporate Commercial and Class Action Litigation

About Robert

Prior to joining Himelfarb Proszanski in 2022, Rob was a Senior Litigation Counsel in the Enforcement Branch of the Ontario Securities Commission where he conducted complex investigations and public prosecutions involving alleged breaches of the Ontario Securities Act.

Before joining the Ontario Securities Commission, Rob practiced class action law at a leading class action law firm, acting as counsel on a range of matters, including price fixing conspiracies, institutional abuse, and securities.

Rob also has experience in commercial litigation matters involving breach of contract, financial services, insurance and reinsurance disputes, franchise disputes, and professional negligence.

He has appeared numerous times in the Superior Court of Justice, the Ontario Court of Appeal, and the Ontario Securities Commission.

Reported Cases

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Practice Areas

  • Class Actions
  • Civil and Commercial Litigation


  • Osgoode Hall Law School, 2005
  • University of Guelph, 2002

Accreditations / Memberships

  • Law Society of Ontario, Member – July 2006
  • Advocates’ Society – 2007 
  • Canadian Bar Association – 2007

The Civil Litigation, Disability Insurance Claims and Personal Injury Team