Before investing, carefully consider the FlexShares investment objectives, risks, charges and expenses.This and other information is in the prospectus and a summary prospectus, copies of which may be obtained by visiting www.flexshares.com. Read the prospectus carefully before you invest. Foreside Fund Services, LLC, distributor.

An investment in FlexShares is subject to numerous risks, including possible loss of principal. Fund returns may not match the return of the respective Index. A full description of risks is in the prospectus.

FlexShares STOXX® Global Broad Infrastructure Index Fund (NFRA) is passively managed and uses a representative sampling strategy to track its Underlying Index. Use of a representative sampling strategy creates tracking risk where the Fund’s performance could vary substantially from the performance of the Underlying Index along with the risk of high portfolio turnover. It is subject to infrastructure-related companies risk and MLP risk. Risks associated with infrastructure-related companies include: realized revenue volume may be significantly lower than projected and/or there will be cost overruns; infrastructure project sponsors will alter their terms making a project no longer economical; macroeconomic factors such as low gross domestic product (GDP) growth or high nominal interest rates will raise the average cost of infrastructure funding; government regulation may affect rates charged to infrastructure customers; government budgetary constraints will impact infrastructure projects; and special tariffs will be imposed. Investments in foreign market securities involve certain risks such as currency volatility, political and social instability and reduced market liquidity. To the extent that the Fund invests in emerging markets, those investments may be subject to increased price volatility and may be more susceptible to adverse economic, market, political or regulatory occurrences affecting that country, market, industry, sector or asset class.

The STOXX® Global Infrastructure Index is the intellectual property (including registered trademarks) of STOXX® Limited, Zurich, Switzerland and/or its licensors ("Licensors"), which is used under license. The securities based on the Index are in no way sponsored, endorsed, sold or promoted by STOXX® and its Licensors and neither of the Licensors shall have any liability with respect thereto.