First Trust Energy Infrastructure Fund (the Fund) is a non-diversified, closed-end management investment company. The Fund's investment objective is to seek a high level of after-tax total return with an emphasis on current distributions paid to shareholders. The Fund will invest primarily in securities of companies engaged in the energy infrastructure sector, principally including publicly-traded master limited partnerships (MLPs) and limited liability companies taxed as partnerships, MLP affiliates, Canadian royalty trusts and income trusts, and their successor companies (Canadian Income Equities), pipeline companies, utilities and other companies. Under normal market conditions, the Fund will invest at least 80% of its Managed Assets, including assets obtained through leverage in securities of Energy Infrastructure Companies. First Trust Advisors L.P. will be the Fund's investment advisor and Energy Income Partners, LLC will be the Fund's sub-advisor.