Definition

Shareholder agreement

A shareholder agreement is a private contract among some or all of a company’s shareholders. It sets out how decisions get made, how shares can be sold or transferred, what happens if a shareholder dies, retires or wants out, and how disputes between owners are resolved.

Reviewed

A corporation’s articles and bylaws set the legal minimum for how it operates, but they rarely address the practical questions that come up between business partners. A shareholder agreement fills that gap with rules the owners actually negotiated and agreed to.

Common topics

  • Who can sit on the board and how major decisions get approved
  • Restrictions on selling or transferring shares to outsiders
  • Rights like drag-along, tag-along and rights of first refusal
  • What happens on death, disability, retirement or a dispute between owners
  • How the company or remaining shareholders can buy out a departing owner

Why it matters before a sale

When a business is sold, the shareholder agreement usually controls how that sale can happen — for example, whether a majority can force a minority shareholder to sell alongside them. Buyers and their lawyers review it early, because provisions buried in an old shareholder agreement can slow down or complicate a deal that otherwise looks straightforward.

Sources

This definition is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Treadstone LawLegal commentary
    Corporate Law
    treadstonelaw.ca·Checked Aug 14, 2026
  2. 02
    Treadstone LawLegal commentary
    Buying & Selling a Business — article library
    treadstonelaw.ca·Checked Aug 14, 2026

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