iShares Core 10+ Year USD Bond ETF

iSHARES^® CORE 10+ YEAR USD BOND ETF
Ticker: ILTB                                 Stock Exchange: NYSE Arca

Investment Objective

The iShares Core 10+ Year USD Bond ETF (the “Fund”) seeks to track the investment results of an index composed of U.S. dollar-denominated bonds that are rated either investment grade or high-yield with remaining maturities greater than ten years.

Fees and Expenses

The following table describes the fees and expenses that you will incur if you own shares of the Fund. The investment advisory agreement between iShares Trust (the “Trust”) and BlackRock Fund Advisors (“BFA”) (formerly, Barclays Global Fund Advisors (“BGFA”)) (the “Investment Advisory Agreement”) provides that BFA will pay all operating expenses of the Fund, except interest expenses, taxes, brokerage expenses, future distribution fees or expenses, and extraordinary expenses.

You may also incur usual and customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the Example that follows:

Annual Fund Operating Expenses
(ongoing expenses that you pay each year as a
percentage of the value of your investments)

Annual Fund Operating Expenses {- iShares Core 10+ Year USD Bond ETF}	Management Fees	Distribution and Service (12b-1) Fees	Other Expenses	Total Annual Fund Operating Expenses
iShares Core 10+ Year USD Bond ETF | iShares Core 10+ Year USD Bond ETF |	0.12%	none	none	0.12%

Example.

This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example {- iShares Core 10+ Year USD Bond ETF}	1 Year	3 Years	5 Years	10 Years
iShares Core 10+ Year USD Bond ETF | iShares Core 10+ Year USD Bond ETF | USD ($)	12	39	68	154

Portfolio Turnover.

The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 15% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to track the investment results of the Barclays U.S. Universal 10+ Year Index (the “Underlying Index”), which measures the performance of U.S. dollar-denominated taxable bonds that are rated either investment-grade or high yield with remaining maturities greater than ten years.

The Underlying Index includes U.S. Treasury bonds, government-related bonds (i.e., U.S. and non-U.S. agencies, sovereign, quasi-sovereign, supranational and local authority debt), investment-grade and high yield U.S. corporate bonds, Eurodollar bonds, bonds registered with the SEC or exempt from registration at the time of issuance, or offered pursuant to Rule 144A with or without registration rights (“Rule 144A Bonds”) and U.S. dollar-denominated emerging market bonds. The Underlying Index is a subset of the Barclays U.S. Universal Index.

The Underlying Index may include large-, mid- or small-capitalization companies. Components of the Underlying Index primarily include treasury securities, and consumer discretionary, energy, financials, industrials and utilities companies. The components of the Underlying Index, and the degree to which these components represent certain industries, may change over time. The securities in the Underlying Index have at least 10 years remaining to maturity, or at least 10 years remaining to the first call date in the case of callable perpetual securities. In addition, the securities in the Underlying Index must be denominated in U.S. dollars and be non-convertible. Excluded from the Underlying Index are tax-exempt municipal securities, coupon issues that have been stripped from bonds, structured notes, private placements (excluding Rule 144A Bonds) and bonds denominated in euros. The Underlying Index is market-capitalization weighted and is rebalanced on the last day of the month.

BFA uses a “passive” or indexing approach to try to achieve the Fund’s investment objective. Unlike many investment companies, the Fund does not try to “beat” the index it tracks and does not seek temporary defensive positions when markets decline or appear overvalued.

Indexing may eliminate the chance that the Fund will substantially outperform the Underlying 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.

BFA uses a representative sampling indexing strategy to manage the Fund. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to that of the Underlying 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, duration, maturity, credit ratings and yield) and liquidity measures similar to those of the Underlying Index. The Fund may or may not hold all of the securities in the Underlying Index.

The Fund generally will invest at least 90% of its assets in the component securities of the Underlying Index and may invest up to 10% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates (“BlackRock Cash Funds”), as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. From time to time when conditions warrant, however, the Fund may invest at least 80% of its assets in the component securities of the Underlying Index and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of BlackRock Cash Funds, as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

The Fund may lend securities representing up to one-third of the value of the Fund's total assets (including the value of any collateral received).

The Underlying Index is sponsored by Barclays Capital Inc. or its affiliates (the “Index Provider” or “Barclays”), which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

Industry Concentration Policy. The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.

Summary of Principal Risks

As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value per share (“NAV”), trading price, yield, total return and ability to meet its investment objective.

Asset Class Risk. Securities in the Underlying Index or in the Fund's portfolio may underperform in comparison to the general financial markets, a particular securities market or other asset classes.

Call Risk. During periods of falling interest rates, an issuer of a callable bond held by the Fund may “call” or repay the security before its stated maturity, and the Fund may have to reinvest the proceeds at lower interest rates, resulting in a decline in the Fund's income.

Concentration Risk. The Fund may be susceptible to an increased risk of loss, including losses due to adverse events that affect the Fund’s investments more than the market as a whole, to the extent that the Fund's investments are concentrated in the securities of a particular sovereign entity or entities, in a particular country, group of countries, region, market, industry, group of industries, sector or asset class.

Consumer Discretionary Sector Risk. The consumer discretionary sector may be affected by changes in domestic and international economies, exchange and interest rates, competition, consumers' disposable income, consumer preferences, social trends and marketing campaigns.

Credit Risk. Debt issuers and other counterparties may not honor their obligations or may have their debt downgraded by ratings agencies.

Custody Risk. Less developed markets are more likely to experience problems with the clearing and settling of trades, as well as the holding of securities by local banks, agents and depositories.

Energy Sector Risk. The value of securities issued by companies in the energy sector may decline for many reasons, including, among others, changes in energy prices, government regulations, energy conservation efforts and potential civil liabilities.

Extension Risk. During periods of rising interest rates, certain debt obligations may be paid off substantially more slowly than originally anticipated and the value of those securities may fall sharply, resulting in a decline in the Fund’s income and potentially in the value of the Fund’s investments.

Financials Sector Risk. Performance of companies in the financials sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. The impact of more stringent capital requirements, recent or future regulation on any individual financial company, or recent or future regulation on the financials sector as a whole cannot be predicted.

Geographic Risk. A natural or other disaster could occur in a geographic region in which the Fund invests.

Income Risk. The Fund's income may decline when interest rates fall. This decline can occur because the Fund may subsequently invest in lower-yielding bonds when bonds in its portfolio mature, bonds in the Underlying Index are substituted or the Fund otherwise needs to purchase additional bonds.

Index-Related Risk. There is no guarantee that the Fund will achieve a high degree of correlation to the Underlying Index and therefore achieve its investment objective. Market disruptions and regulatory restrictions could have an adverse effect on the Fund’s ability to adjust its exposure to the required levels in order to track the Underlying Index. Errors in index data, index computations or the construction of the Underlying Index in accordance with its methodology may occur from time to time and may not be identified and corrected by the Index Provider for a period of time or at all, which may have an adverse impact on the Fund and its shareholders.

Industrials Sector Risk. The industrials sector may be affected by changes in the supply of and demand for products and services, product obsolescence, claims for environmental damage or product liability and general economic conditions, among other factors.

Interest Rate Risk. An increase in interest rates may cause the value of securities held by the Fund to decline.

Issuer Risk. Fund performance depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the securities to decline.

Liquidity Risk. Liquidity risk exists when particular investments are difficult to purchase or sell. This can reduce the Fund's returns because the Fund may be unable to transact at advantageous times or prices.

Management Risk. As the Fund may not fully replicate the Underlying Index, it is subject to the risk that BFA's investment strategy may not produce the intended results.

Market Risk. The Fund could lose money over short periods due to short-term market movements and over longer periods during more prolonged market downturns.

Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruptions in the creation/redemption process. ANY OF THESE FACTORS, AMONG OTHERS, MAY LEAD TO THE FUND'S SHARES TRADING AT A PREMIUM OR DISCOUNT TO NAV.

Non-U.S. Agency Debt Risk. The Fund invests in uncollateralized bonds issued by agencies, subdivisions or instrumentalities of foreign governments. Bonds issued by government agencies, subdivisions or instrumentalities are generally backed only by the general creditworthiness and reputation of the entity issuing the bonds and may not be backed by the full faith and credit of the foreign government. Moreover, a foreign government that explicitly provides its full faith and credit to a particular entity may be, due to changed circumstances, unable or unwilling to provide that support. A non-U.S. agency’s operations and financial condition are influenced by the foreign government’s economic and other policies.

North American Economic Risk. Economic events in any one North American country can have a significant economic effect on the entire North American region and on some or all of the North American countries in which the Fund invests.

Passive Investment Risk. The Fund is not actively managed and BFA does not attempt to take defensive positions under any market conditions, including declining markets.

Risk of Investing in the United States. The Fund has significant exposure to U.S. issuers. Certain changes in the U.S. economy, such as when the U.S. economy weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has exposure.

Securities Lending Risk. The Fund may engage in securities lending. Securities lending involves the risk that the Fund may lose money because the borrower of the loaned securities fails to return the securities in a timely manner or at all. The Fund could also lose money in the event of a decline in the value of the collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. These events could also trigger adverse tax consequences for the Fund.

Security Risk. Some countries and regions in which the Fund invests have experienced security concerns. Incidents involving a country's or region's security may cause uncertainty in these markets and may adversely affect their economies and the Fund's investments.

Sovereign and Quasi-Sovereign Obligations Risk. The Fund invests in securities issued by or guaranteed by sovereign governments and by entities affiliated with or backed by non-U.S. sovereign governments, which may be unable or unwilling to repay principal or interest when due. In times of economic uncertainty, the prices of these securities may be more volatile than those of corporate debt obligations or of other government debt obligations.

Structural Risk. The countries in which the Fund invests may be subject to considerable degrees of economic, political and social instability.

Tracking Error Risk. Tracking error is the divergence of the Fund’s performance from that of the Underlying Index. Tracking error may occur because of differences between the securities held in the Fund’s portfolio and those included in the Underlying Index, pricing differences, transaction costs, the Fund’s holding of uninvested cash, differences in timing of the accrual of distributions, changes to the Underlying Index or the need to meet various new or existing regulatory requirements. This risk may be heightened during times of increased market volatility or other unusual market conditions. Tracking error also may result because the Fund incurs fees and expenses, while the Underlying Index does not. BFA EXPECTS THAT THE FUND MAY EXPERIENCE HIGHER TRACKING ERROR THAN IS TYPICAL FOR SIMILAR INDEX EXCHANGE-TRADED FUNDS (“ETFs”).

U.S. Agency Debt Risk. The Fund invests in unsecured bonds or debentures issued by government agencies. Bonds or debentures issued by government agencies, including the Federal National Mortgage Association (“Fannie Mae”) and the Federal Home Loan Mortgage Corporation (“Freddie Mac”), are generally backed only by the general creditworthiness and reputation of the government agency issuing the bond or debenture and are not backed by the full faith and credit of the U.S. government. As a result, there is uncertainty as to the current status of many obligations of Fannie Mae, Freddie Mac and other agencies that are placed under conservatorship of the federal government. Government National Mortgage Association (“Ginnie Mae”) securities are generally backed by the full faith and credit of the U.S. government.

U.S. Treasury Obligations Risk. U.S. Treasury obligations may differ from other securities in their interest rates, maturities, times of issuance and other characteristics and may provide relatively lower returns than those of other securities. Similar to other issuers, changes to the financial condition or credit rating of the U.S. government may cause the value of the Fund's U.S. Treasury obligations to decline.

Utilities Sector Risk. The utilities sector is subject to significant government regulation and oversight. Deregulation, however, may subject utility companies to greater competition and may reduce their profitability. Companies in the utilities sector may be adversely affected due to increases in fuel and operating costs, rising costs of financing capital construction and the cost of complying with U.S. federal and state regulations, among other factors.

Valuation Risk. The sale price the Fund could receive for a security may differ from the Fund's valuation of the security  and from the value used by the Underlying Index, particularly for securities or assets that trade in low volume or volatile markets or that are valued using a fair value methodology. In addition, the value of the securities or assets in the Fund's portfolio may change on days when shareholders will not be able to purchase or sell the Fund's shares.

Performance Information

The bar chart and table that follow show how the Fund has performed on a calendar year basis and provide an indication of the risks of investing in the Fund. Both assume that all dividends and distributions have been reinvested in the Fund. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Supplemental information about the Fund’s performance is shown under the heading Total Return Information in the Supplemental Information section of the Fund's prospectus (the “Prospectus”).

Year by Year Returns (Years Ended December 31)

The best calendar quarter return during the periods shown above was 15.37% in the 3rd quarter of 2011; the worst was -6.06% in the 2nd quarter of 2013.

Updated performance information is available at www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).

Average Annual Total Returns
(for the periods ended December 31, 2014)

Average Annual Total Returns {- iShares Core 10+ Year USD Bond ETF} - iShares Core 10+ Year USD Bond ETF		One Year	Five Years	Since Fund Inception	Inception Date
iShares Core 10+ Year USD Bond ETF		17.83%	9.27%	8.74%	Dec. 08, 2009
iShares Core 10+ Year USD Bond ETF | Return After Taxes on Distributions	[1]	15.90%	7.53%	7.00%
iShares Core 10+ Year USD Bond ETF | Return After Taxes on Distributions and Sale of Fund Shares	[1]	10.03%	6.51%	6.09%
Barclays U.S. Universal 10+ Year Index (Index returns do not reflect deductions for fees, expenses, or taxes)	[2]	18.21%	9.53%	9.01%

[1] The Fund's year-to-date return as of March 31, 2015 was 3.50%.

[1] After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs"). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sale of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.

[2] Index performance through October 22, 2012 reflects the performance of the BofA Merrill Lynch 10+ Year US Corporate & Government IndexSM. Index performance beginning on October 23, 2012 through June 2, 2014 reflects the performance of the Barclays U.S. Long Government/Credit Bond Index. Index performance beginning on June 3, 2014 reflects the performance of the Barclays U.S. Universal 10+ Year Index.