Fund Description: iShares Core U.S. Aggregate Bond ETF, formerly iShares Core Total U.S. Bond Market ETF, formerly the iShares Barclays Aggregate Bond Fund, formerly iShares Lehman Aggregate Bond Fund, is an exchange-traded index fund or Index ETF which is a separate investment portfolio of the iShares Trust, an open-end investment management company. INVESTMENT OBJECTIVE: The iShares Core U.S. Aggregate Bond ETF seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Barclays U.S. Aggregate Bond Index. INDEX DESCRIPTION: The Barclays U.S. Aggregate Bond Index measures the performance of the total U.S. investment grade bond market. The Index includes investment grade U.S. Treasury bonds, government-related bonds, corporate bonds, mortgage pass-through securities, commercial mortgage-backed securities and asset-backed securities that are publicly offered for sale in the United States. The securities in the Index have $250 million or more of outstanding face value and have at least one year remaining to maturity, with the exception of amortizing securities such as asset-backed and mortgage-backed securities, which have lower thresholds as defined by the index provider. In addition, the securities in the Index must be denominated in U.S. dollars and must be fixed-rate and non-convertible. Certain types of securities, such as state and local government series bonds, structured notes with embedded swaps or other special features, private placements, floating-rate securities and bonds denominated in euros are excluded from the Index. The Index is market capitalization-weighted and the securities in the Index are updated on the last calendar day of each month. FUND STRATEGY: A passive or indexing approach is used to try to achieve the Fund's investment objective. Unlike many investment companies the Fund does not try to beat the Index and does not seek temporary defensive positions when markets decline or appear overvalued. Indexing may eliminate the chance that the Fund will substantially outperform its Index but also may reduce some of the risks of active management, such as poor security selection. Indexing seeks to achieve lower costs and better after-tax performance by keeping portfolio turnover low in comparison to actively managed investment companies. Representative sampling is an indexing strategy that is used which involves investing in a representative sample of securities that collectively has an investment profile similar to the Index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the Index. A Fund may or may not hold all of the securities in the Index. The Fund generally seeks to track the performance of its Index by investing approximately 90% of its assets in the bonds represented in its Index and in securities that provide substantially similar exposure to securities in the Index. The Fund may invest the remainder of its assets in bonds not included in the Index, but which is believed will help the Fund track its Index, as well as in cash and high-quality, liquid short-term instruments, including shares of money market funds. FUND MANAGEMENT: BlackRock Fund Advisors (BFA) serves as the investment adviser to the Fund.