National Instrument 55-104 Insider Reporting Requirements and Exemptions
Part 1 Definitions and Interpretation
Section 1.1(1)

major subsidiary

“major subsidiary” means a subsidiary of an issuer if

(a) the assets of the subsidiary, as included in the issuer’s most recent annual audited or interim balance sheet, or, for a period relating to a financial year beginning on or after January 1, 2011, a statement of financial position, are 30 per cent or more of the consolidated assets of the issuer reported on that balance sheet or statement of financial position, as the case may be, or

(b) the revenue of the subsidiary, as included in the issuer’s most recent annual audited or interim income statement, or, for a period relating to a financial year beginning on or after January 1, 2011, a statement of comprehensive income, is 30 per cent or more of the consolidated revenue of the issuer reported on that statement;