Atty. Jay A. Lefton
Jay Lefton practices corporate and securities law. Jay advises clients on public and private mergers & acquisitions transactions, private equity matters and public and private financings, as well as assisting with strategic alliances, technology transfer and licensing.
Profile Summary
About Jay A. Lefton at a glance
Jay A. Lefton is a business, m&a, securities, and health care attorney based in Toronto, Ontario, practicing at Fasken. Admitted to practice in Ontario, The Law Society of Upper Canada. Recognitions include Best Lawyers in America — Biotechnology and Life Sciences Practice (2026), Best Lawyers in America — Corporate Law (2026), and Best Lawyers in America — Health Care Law (2026). Serves clients in Toronto, ON and the surrounding metropolitan area.
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About
- Jay Lefton practices corporate and securities law
- Jay advises clients on public and private mergers & acquisitions transactions, private equity matters and public and private financings, as well as assisting with strategic alliances, technology transfer and licensing
- He works predominantly in the technology and life sciences sector
- Assisting acquirers and target companies and their boards of directors, Jay advises on negotiated transactions and unsolicited takeover bids, most of which are multi-jurisdictional
- Jay also represents issuers, both public and private, as well as advisers, venture capitalists, institutional investors and private equity funds
- Working with universities, hospitals, research institutions and researchers, Jay advises at various stages in the commercialization of their discoveries
Practice Areas Explained
Jay A. Lefton's Areas of Practice
Each practice area below reflects the types of cases Jay A. Lefton handles, with a brief overview of what that area of law covers.
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Jay A. Lefton is one of 452,854 business attorneys indexed nationally. Browse business attorneys in Ontario →
Jay A. Lefton is one of 45,724 m&a attorneys indexed nationally. Browse m&a attorneys in Ontario →
Jay A. Lefton is one of 58,852 securities attorneys indexed nationally. Browse securities attorneys in Ontario →
Health care attorneys for HIPAA, Medicare, Medicaid, regulatory compliance, and medical licensing matters.
Jay A. Lefton is one of 59,895 health care attorneys indexed nationally. Browse health care attorneys in Ontario →
Jurisdictional Context
Why local counsel matters in Ontario
Practicing law in Ontario. Legal matters in Ontario are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Toronto are typically filed in the local municipal court or the appropriate Ontario state district court, depending on subject matter and amount in controversy. An attorney licensed in Ontario brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Ontario courts without local counsel or pro hac vice admission.
Looking for additional Ontario attorneys? Browse all attorneys in Toronto or all attorneys in Ontario.
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