*As of September 30, 2018, Ariel International Fund's Institutional Class had an annual net expense ratio of 0.88% and a gross expense ratio of 0.93%. Effective November 29, 2016, Ariel Investments, LLC, the Adviser, has contractually agreed to waive fees and reimburse expenses (the “Expense Cap”) in order to limit Ariel International Fund’s total annual operating expenses to 0.88% of net assets for the Institutional Class through the end of the fiscal year ending September 30, 2021. Prior to November 29, 2016, the Expense Cap was 1.00% for the Institutional Class. Through January 31, 2014, the Expense Cap was 1.15% for the Institutional Class. The Expense Cap has been lowered over time. Contact us for historical information about the Expense Cap.

Investments in foreign securities may underperform and may be more volatile than comparable U.S. stocks because of the risks involving foreign economies and markets, foreign political systems, foreign regulatory standards, foreign currencies and taxes. The use of currency derivatives and exchange-traded funds (ETFs) may increase investment losses and expenses and create more volatility. Investments in emerging markets present additional risks, such as difficulties in selling on a timely basis and at an acceptable price. The intrinsic value of the stocks in which the Fund invests may never be recognized by the broader market. Performance data quoted represents past performance. Past performance does not guarantee future results. All performance assumes the reinvestment of dividends and capital gains. The investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance data quoted.

MSCI EAFE Index is an unmanaged, market-weighted index of companies in developed markets, excluding the U.S. and Canada. The MSCI EAFE Index net returns reflect the reinvestment of income and other earnings, including the dividends net of the maximum withholding tax applicable to non-resident institutional investors that do not benefit from double taxation treaties. MSCI uses the maximum tax rate applicable to institutional investors, as determined by the companies' country of incorporation. The MSCI ACWI (All Country World Index) ex-US Index is an unmanaged, market-weighted index of global developed and emerging markets, excluding the United States. The MSCI ACWI ex US Index net returns reflect the reinvestment of income and other earnings, including the dividends net of the maximum withholding tax applicable to non-resident institutional investors that do not benefit from double taxation treaties. MSCI uses the maximum tax rate applicable to institutional investors, as determined by the companies' country of incorporation. Source: MSCI. MSCI makes no express or implied warranties or representations and shall have no liability whatsoever with respect to any MSCI data contained herein. The MSCI data may not be further redistributed or used to create indices or financial products. This report is not approved or produced by MSCI.

Investors should consider carefully the investment objectives, risks, and charges and expenses before investing. For a current summary prospectus or full prospectus which contains this and other information about the funds offered by Ariel Investment Trust, call us at 800-292-7435 or click here. Please read the summary prospectus or full prospectus carefully before investing. Distributed by Ariel Distributors, LLC, a wholly-owned subsidiary of Ariel Investments, LLC. Ariel Distributors, LLC is a member of the Securities Investor Protection Corporation.