ClearBridge Energy MLP Opportunity Fund Inc. (the Fund) is a non-diversified, closed-end management investment company. The Fund's investment objective is to provide long-term investors a high level of total return with an emphasis on cash distributions. The Fund seeks to achieve its objective by investing primarily in master limited partnerships (MLPs) in the energy sector. Under normal market conditions, the Fund will invest at least 80% of its managed assets in MLPs in the energy sector. The Fund considers an entity to be within the energy sector if it derives at least 50% of its revenues from the business of exploring, developing, producing, gathering, transporting, processing, storing, refining, distributing, mining or marketing of natural gas, natural gas liquids (including propane), crude oil, refined petroleum products or coal. Legg Mason Partners Fund Advisor, LLC is the Fund's investment manager and ClearBridge Investments, LLC is the Fund's sub advisor.