Bridge Builder Municipal Bond Fund (Bridge Builder Municipal Bond F) Fonds

The fund invests, under normal market conditions, at least 80% of its net assets (plus the amount of borrowings for investment purposes) in municipal securities of any maturity or duration whose interest is exempt from federal income tax. It invests in municipal securities rated below investment grade, also known as "junk bonds," or in unrated municipal securities that a sub-adviser believes are of comparable quality.