Mack Hosseinian

Partner | Toronto


Portrait of Mack Hosseinian


Mack Hosseinian has a broad business law practice with a focus on capital markets, mergers and acquisitions (public and private), corporate/commercial law and corporate governance. He has acted as counsel for both issuers and investment dealers on a variety of securities law matters including public offerings and private placements of equity, debt, convertible debt, and structured products. He routinely provides strategic advice to private companies with going-public transactions, including by way of initial public offerings, reverse takeovers and cross-border listings. He has experience assisting clients in a broad range of sectors such as technology, mining, financial services, cannabis and psychedelic medicine.

Professional memberships

  • Ontario Bar Association
  • Canadian Bar Association
  • Law Society of Ontario

Bar admissions & education

  • Ontario, 2011
  • J.D., Osgoode Hall Law School, 2010
  • B.A.Sc. (first class), York University, 2007