An investment in the fund is not a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. It is not a complete investment program. The fund's share price fluctuates, sometimes dramatically, which means you could lose money.

· Sustainable investment approach risk: The fund's sustainable investment approach may cause it to make different investments than funds that invest principally in equity securities of U.S. companies that do not incorporate sustainable investment criteria when selecting investments. Under certain economic conditions, this could cause the fund to underperform funds that do not incorporate similar criteria. For example, the incorporation of sustainable investment criteria may result in the fund forgoing opportunities to buy certain securities when it might otherwise be advantageous to do so or selling securities when it might otherwise be disadvantageous for the fund to do so. The incorporation of sustainable investment criteria may also affect the fund's exposure to certain sectors and/or types of investments, and may adversely impact the fund's performance depending on whether such sectors or investments are in or out of favor in the market. NIM's security selection process incorporates ESG data provided by third parties, which may be limited for certain companies and/or only take into account one or a few ESG related components. In addition, ESG data may include qualitative and/or quantitative measures, and consideration of this data may be subjective. Different methodologies may be used by the various data sources that provide ESG data. ESG data from third parties used by NIM as part of its sustainable investment process often lacks standardization, consistency and transparency, and for certain companies such data may not be available, complete or accurate. NIM's evaluation of ESG factors relevant to a particular company may be adversely affected in such instances. As a result, the fund's investments may differ from, and potentially underperform, funds that incorporate ESG data from other sources or utilize other methodologies.

· Growth and value stock risk: By investing in a mix of growth and value companies, the fund assumes the risks of both. Investors often expect growth companies to increase their earnings at a certain rate. If these expectations are not met, investors can punish the stocks inordinately, even if earnings do increase. Value stocks involve the risk that they may never reach their expected full market value, either because the market fails to recognize the stock's intrinsic worth or the expected value was misgauged.

· Market risk: The value of the securities in which the fund invests may be affected by political, regulatory, economic and social developments, and developments that impact specific economic sectors, industries or segments of the market.  In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed-income markets may negatively affect many issuers, which could adversely affect the fund.  Global economies and financial markets are becoming increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market.  These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies world-wide.  Local, regional or global events such as war, military conflicts, acts of terrorism, natural disasters, the spread of infectious illness or other public health issues, recessions, elevated levels of government debt, changes in trade regulation or economic sanctions, internal unrest and discord, or other events could have a significant impact on the fund and its investments.