The Western Asset Investment Grade Defined Opportunity Trust Inc. operates as a closed-end mutual fund concentrating on fixed income, initially established and overseen by Legg Mason Partners Fund Advisor, LLC. Its management is shared among several entities, including Western Asset Management Company, Western Asset Management Company Pte. Ltd, Western Asset Management Company Ltd., and Western Asset Management Company Limited. This U.S.-domiciled trust, formed on June 26, 2009, allocates its capital specifically within the fixed income markets of the United States. Its investment objective is to acquire securities from companies spanning a broad range of diversified sectors, with a primary focus on investment-grade corporate debt instruments possessing various maturity dates. All investment decisions are informed by the fund's proprietary in-house research. The trust is scheduled to liquidate on or around December 2, 2024.