(4) Where a financial institution or a person engaged in other business activity acts in contravention of subsection (3), a person who, at the time of the commission of the offence, acted or purported to act in an official capacity for or on behalf of the financial institution or person engaged in other business activity, commits an offence and is liable on summary conviction to a fine of not less than $100,000 and not exceeding $500,000 or to imprisonment for a term of not less than 7 years and not exceeding 15 years or both.