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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Business & Commercial Law Ontario » Business Litigation Guides Ontario » What to Do if the Majority Shareholder is Diluting Your Shares Unfairly in Ontario

What to Do if the Majority Shareholder is Diluting Your Shares Unfairly in Ontario

11 Jun 2026 4 min read No comments Business Litigation Guides Ontario
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If majority owners in Ontario unfairly issue new shares to dilute your equity and voting power, you can file an “oppression remedy” claim under the Business Corporations Act. Filing an application at the Superior Court of Justice costs roughly $229 CAD, but hiring a corporate litigator for an emergency injunction usually requires an initial retainer of $5,000 to $10,000 CAD.

Building a successful private business in tech hubs like Toronto, Ottawa, or Waterloo takes immense personal effort and financial risk. However, minority shareholders often find themselves in highly vulnerable positions when relationships with the majority founders sour. One of the most common aggressive tactics used to squeeze out a minority partner is unfair share dilution.

Dilution happens when the company issues a massive number of new shares to the majority owners at an artificially low price, significantly reducing the percentage of the company that you own. 💼 Fortunately, Ontario corporate law provides very powerful legal tools, including emergency injunctions and the statutory oppression remedy, to protect minority investors from bad-faith corporate bullying.

Step-by-Step Process for Stopping Share Dilution in Ontario

When you discover an unfair share issuance is about to happen, you must act incredibly fast. The process to defend your equity generally involves these legal steps.

Step 1: Review the Corporate Minute Book and Contracts

Your very first step is to carefully examine the existing Unanimous Shareholder Agreement (USA) and the corporate Articles of Incorporation. You are specifically looking for “pre-emptive rights.” Under the Ontario Business Corporations Act (OBCA), if pre-emptive rights exist, the company cannot legally issue new shares without first offering you the chance to buy your proportional share to maintain your current ownership percentage.

Step 2: Send a Formal Demand Letter

If the majority is ignoring your rights or pushing through a secret board resolution, your lawyer will draft a strong, formal demand letter. 📝 This legal document officially puts the majority shareholders and the board of directors on notice. It demands an immediate halt to the share issuance and reminds the directors of their strict fiduciary duty to act fairly toward all shareholders.

Step 3: Apply for an Emergency Injunction

If the majority refuses to pause the dilution, your corporate law firm may quickly apply to the Ontario Superior Court of Justice for an interlocutory injunction. An injunction is a binding court order that legally forces the company to freeze the share issuance until a judge can properly review the fairness of the entire transaction at a later date.

Step 4: File an Oppression Remedy Application

To secure long-term relief, you will formally file a claim using the “oppression remedy” under Section 248 of the OBCA. ⚔️ This powerful legal action is designed for situations where the corporation’s actions are unfairly prejudicial to a minority shareholder. You must prove to the judge that the share issuance serves no valid business purpose and is solely designed to destroy your voting power.

Step 5: Seek a Court-Ordered Buyout

If the relationship between the partners is completely broken beyond repair, judges in Ontario have incredibly broad powers to fix the situation. Instead of simply reversing the share dilution, the court may legally order the majority shareholders-or the corporation itself-to buy out all of your shares at a perfectly fair market value determined by an independent financial appraiser.

How Much Does an Oppression Claim Cost in Ontario?

Corporate litigation is inherently complex, and fighting an aggressive majority shareholder requires serious financial resources.

  • Court Filing Fees: Filing an Application or Statement of Claim at the Superior Court of Justice typically costs $229 CAD.
  • Lawyer Retainers: Specialized business litigators in Ontario generally require an upfront retainer ranging from $5,000 to $15,000 CAD.
  • Hourly Rates: Experienced corporate lawyers generally charge between $350 and $800 CAD per hour.
  • Independent Valuators: If the court orders a buyout, hiring a Chartered Business Valuator (CBV) to price your shares typically costs between $5,000 and $15,000 CAD.

How Long Does the Litigation Process Take?

While an emergency freeze can happen in days, resolving the underlying corporate dispute takes substantial time. ⌛

Legal Action PhaseEstimated Timeline in Ontario
Emergency Injunction Application1 to 3 weeks
Exchange of Affidavits (Evidence)2 to 6 months
Cross-Examinations3 to 8 months
Final Oppression Hearing1 to 2 years

Frequently Asked Questions (FAQ)

What exactly is the oppression remedy?

The oppression remedy is a powerful legal provision in both the OBCA and the Canada Business Corporations Act (CBCA). It allows a judge to intervene when a corporation, its directors, or majority owners act in a way that is oppressive, unfairly prejudicial, or unfairly disregards the legitimate expectations of a minority shareholder.

Can the majority owners just fire me as a director to force me out?

While majority shareholders generally have the voting power to remove a director under standard corporate law, doing so in bad faith as part of a scheme to unfairly steal your equity or cut off your salary can heavily strengthen your oppression claim in an Ontario court.

Do I still have rights if there is no written shareholder agreement?

Yes, absolutely. Even without a formal shareholder agreement, you are still highly protected by the basic statutory rights within the Ontario Business Corporations Act, including the strict legal right to review corporate financial records and the right to claim oppression.

Can the company use its own money to fight my lawsuit?

This is a highly contentious issue. In many oppression cases, the majority owners improperly use corporate funds to pay their defence lawyers. You can aggressively apply to the court to stop them from draining company resources, forcing the majority owners to pay their legal fees personally.

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