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Robert W. Staley

Securities & Commercial Litigation Lawyer | Shareholder Disputes

Vice Chair and Partner

Doug Fenton

Litigation Lawyer at Bennett Jones Toronto

Partner

Sophia DiNicolo

Lawyer at Bennett Jones Toronto

Associate 

The Ontario Superior Court in Dziedziejko v Canopy Growth held that materiality may be inferred from a significant share price drop following corrective disclosure, granting leave to pursue secondary market misrepresentation claims. The decision signals a potential shift from contextual materiality analysis and raises challenges for issuers with volatile share prices. 
<div>&nbsp;</div>

Inferring Materiality from Share Price Movement Dziedziejko v Canopy Growth

Inferring Materiality from Share Price Movement: Dziedziejko v Canopy Growth

Kristopher R. Hanc

M&A and Capital Markets Lawyer

John Lawless

Corporate & Securities Lawyer | Private Equity

James D. Beeby

Corporate Finance, M&A, Private Equity and Venture Capital Lawyer

The Supreme Court of Canada has released its much-anticipated decision in Lundin Mining Corp. v. Markowich, 2025 SCC 39, clarifying the definition of a "material change" under securities law and providing guidance on when a public company must disclose information to the market. The decision will have broad implications for public companies, their directors, officers, shareholders and other market participants.

Supreme Court of Canada Clarifies Scope of Securities Disclosure Obligations for Material Changes

Shifting Grounds: Supreme Court of Canada Clarifies Scope of Securities Disclosure Obligations for "Material Changes"

Amanda C. McLachlan

Corporate & Regulatory Lawyer | Disputes, Investigations & Compliance

The Ontario Court of Appeal&rsquo;s decision in Binance v. OSC clarifies the limits of the OSC&rsquo;s investigative powers and the Charter protections available in securities investigations. While the Court rejected a constitutional right to challenge a summons before compliance, it found the summons issued to Binance overbroad and unconstitutional. The ruling offers important guidance for market participants on regulatory scrutiny, the scope of document production, and the viability of judicial review.

Court of Appeal Addresses Scope of Charter Review in Securities Investigations

Binance v. OSC: Court of Appeal Addresses Scope of Charter Review in Securities Investigations 

David Cassin

Employment Lawyer at Bennett Jones Toronto

In McPherson v Global Growth Assets Inc., the Ontario Superior Court interpreted the no-reprisal provisions of the Securities Act for the first time, awarding more than $5.3 million to a CEO who was terminated after raising compliance concerns. The decision underscores the strength of the Act&rsquo;s protections for employees who engage in protected activities and highlights the significant risk to employers of taking disciplinary action without clear, documented justification.

Ontario Securities Act No Reprisal Provisions Results in 53 Million Award to CEO

Ontario Securities Act No-Reprisal Provisions Results in C$5.3 Million Award to CEO: A Warning to Regulated Employers

Edwin G. Kroft KC

Tax Litigation Lawyer at Bennett Jones

Andrew Young

Tax Lawyer at Bennett Jones Vancouver

Associate

The June 2026 issue of Bennett Jones on Tax Disputes provides insight into recent tax litigation developments, including the Tax Court's decision in 941624 Alberta Ltd. v. The King on the large corporation objection rules, updates from the Taxpayers' Ombudsperson, and summaries of recent tax decisions and appeal activity.

Bennett Jones on Tax Disputes Issue 42

Bennett Jones on Tax Disputes: June 2026

Keely Cameron

Litigation Lawyer at Bennett Jones Calgary

Gracie Boser

Articling Student

The Alberta Court of Appeal has clarified the nature of co-lessee liability for unpaid Crown royalties under the Mines and Minerals Act. In two companion decisions, the Court confirmed that co-lessees are jointly (not jointly and severally) liable, meaning a claim extinguished against one may impact all. The decisions also address how vesting orders and insolvency stays affect the Crown&rsquo;s ability to pursue royalty arrears.

Vesting Order Bars Claims

 However Co-Lessee Liability for Unpaid Crown Royalties May Remain

Vesting Order Bars Claims for Unpaid Crown Royalties

Jean Tessier

Commercial Transactions Lawyer

Alison G. FitzGerald

International Arbitration Lawyer

Andrew Bozzato

Corporate, M&A, Securities Lawyer at Bennett Jones Toronto

In mid-February, the federal government launched Canada's first <a rel="noopener noreferrer" href="https://www.canada.ca/en/department-national-defence/corporate/reports-publications/industrial-strategy/security-sovereignty-prosperity.html" target="_blank" id="Defence Insdustrial Strategy | Government of Canada">Defence Industrial Strategy</a>, aiming to transform the Canadian defence industry by prioritizing Canadian suppliers and materials, investing in Canadian innovation and commercialization, and streamlining procurement.

Impacts of the Federal Defence Industrial Strategy on the Canadian MA Landscape

Impacts of the Federal Defence Industrial Strategy on the Canadian M&A Landscape

Brian P. Reid

Construction & Energy Litigation Lawyer

Kaamil Khalfan

Commercial Litigation Lawyer at Bennett Jones Calgary

Aaron Tell

Lawyer at Bennett Jones Calgary 

The Alberta Court of King's Bench has clarified that the two-year trial deadline under the Prompt Payment and Construction Lien Act does not apply once a construction lien and certificate of lis pendens have been discharged from title through the posting of security. In 1951789 Alberta Ltd v Britannia Block General Partnership Inc., the Court confirmed that section 46(2) applies only where a lien and CLP remain registered against the land. The decision provides important guidance for parties involved in construction lien disputes and highlights the distinction between statutory lien remedies and delay-based applications under the Alberta Rules of Court.

Security Measures The Alberta Court of Kings Bench Clarifies

Security Measures: The Alberta Court of King's Bench Clarifies the Law of Lien Security

J. Sébastien A. Gittens

Technology Lawyer & Trademark Agent

Partner, Trademark Agent

Ruth E. Promislow

Privacy, Cybersecurity & AI Lawyer

Caroline Poirier

IT, Privacy & Data Protection Lawyer

On June 15, 2026, the federal government introduced Bill C-36 to modernize Canada&rsquo;s federal private sector privacy laws and continue the implementation of Canada's National Artificial Intelligence Strategy: AI for All.

Robert Staley in the Financial Post on Investigating Crimes Using the Securities Act

From the Same Authors