NORTHERN FUNDS Multi-Manager Global Listed Infrastructure Fund

INVESTMENT OBJECTIVE

The Fund seeks total return through both income and capital appreciation.

FEES AND EXPENSES OF THE FUND

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may be required to pay commissions and/or other forms of compensation to a financial intermediary for transactions in Shares Class shares, which are not reflected in the tables or the examples below.

EXAMPLE

The following Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem 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 (taking into account the expense reimbursement arrangement for one year, if applicable). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

PORTFOLIO TURNOVER. The Fund pays 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 48.35% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

In seeking to achieve total return, the Fund will invest, under normal circumstances, at least 80% of its net assets (plus borrowings for investment purposes) in securities of infrastructure companies listed on a domestic or foreign exchange. The Fund invests primarily in equity securities, including common stock, of infrastructure companies. Under normal circumstances, the Fund will invest at least 40%, and may invest up to 100%, of its net assets in the securities of infrastructure companies economically tied to a foreign (non-U.S.) country, including emerging market countries (i.e., those that are generally in the early stages of their industrial cycles). The Fund may invest in large, medium or small capitalization infrastructure companies. The Fund will invest at least 25% or more of its total assets in issuers principally engaged in the infrastructure business.

The Fund considers a company to be engaged in the infrastructure business if it derives at least 50% of its revenues or earnings from, or devotes at least 50% of its assets to, infrastructure-related activities. The Fund defines “infrastructure” as the systems and networks of energy, transportation, utilities, communication and other services required for the normal function of society. Infrastructure companies are involved in, among other things: (1) the generation, transmission and distribution of electric energy; (2) the storage, transportation and distribution of natural resources, such as natural gas, used to produce energy; (3) alternative and sustainable energy sources; (4) the building, operation and maintenance of highways, toll roads, tunnels, bridges and parking lots; (5) the building, operation and maintenance of airports and ports, railroads and mass transit systems; (6) telecommunications and digital infrastructure, including wireless, cable networks and data centers; (7) water treatment and distribution; (8) social infrastructure and other public services such as health care and education; and (9) businesses tied to future infrastructure spending and infrastructure project management including consultancy and engineering.

The Fund may enter into spot and forward foreign currency exchange contracts to facilitate settlement of securities transactions.

The Fund utilizes a “multi-manager” approach whereby the Fund’s assets are allocated to one or more sub-advisers, in percentages determined at the discretion of NTI. Each sub-adviser acts independently from the others and utilizes its own distinct investment style in selecting securities. However, each sub-adviser must operate within the constraints of the Fund’s investment objective, strategies and restrictions.

When determining the allocations and reallocations to sub-advisers, NTI will consider a variety of factors, including but not limited to the sub-adviser’s investment approach, historical performance, and the characteristics of each sub-adviser’s allocated assets (including capitalization, growth and profitability measures, valuation metrics, economic sector exposures, and earnings and volatility statistics). NTI seeks, through its selection of sub-advisers and its allocation determinations, to reduce portfolio volatility and provide an attractive combination of risk and return for the Fund.

The sub-advisers may engage in active trading, and will not consider portfolio turnover a limiting factor in making decisions for the Fund.

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 certain risks, including the principal risks noted below, any of which may adversely affect the Fund’s net asset value (“NAV”), total return and ability to meet its investment objective. Each risk noted below is considered a principal risk of investing in the Fund, regardless of the order in which it appears. The significance of each risk factor below may change over time and you should review each risk factor carefully.

MARKET RISK is the risk that the value of the Fund’s investments may increase or decrease in response to expected, real or perceived economic, political or financial events in the U.S. or global markets. The frequency and magnitude of such changes in value cannot be predicted. Certain securities and other investments held by the Fund may experience increased volatility, illiquidity, or other potentially adverse effects in response to changing market conditions, inflation, changes in interest rates, lack of liquidity in the bond or equity markets or volatility in the equity markets. Market disruptions caused by local or regional events such as financial institution failures, war, acts of terrorism, the spread of infectious illness (including epidemics and pandemics) or other public health issues, recessions or other events or adverse investor sentiment could have a significant impact on the Fund and its investments. During periods of market disruption or other abnormal market conditions, the Fund’s exposure to risks described elsewhere in this summary will likely increase.

INFRASTRUCTURE SECURITIES CONCENTRATION RISK Infrastructure companies are subject to the risk that: the potential for realized revenue volumes is significantly lower than projected and/or there will be cost overruns; 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 funding; government regulation may affect rates charged to customers; government budgetary constraints will impact projects; special tariffs will be imposed; and changes in tax laws, regulatory policies or accounting standards could be unfavorable. Other risks include environmental damage due to a company’s operations or an accident, changes in market sentiment towards infrastructure and terrorist acts. Because the Fund concentrates its investments in the infrastructure industry, it will be subject to greater risk of loss than if it were diversified across different industries.

FOREIGN SECURITIES RISK is the risk that investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies, due to less liquid markets, and adverse economic, political, diplomatic, financial, and regulatory factors. Foreign governments may impose limitations on foreigners’ ownership of interests in local issuers, restrictions on the ability to repatriate assets, and may also impose taxes. Any of these events could cause the value of the Fund’s investments to decline. Foreign banks, agents and securities depositories that hold the Fund’s foreign assets may be subject to little or no regulatory oversight over, or independent evaluation, of their operations. Additional costs associated with investments in foreign securities may include higher custodial fees than those applicable to domestic custodial arrangements and transaction costs of foreign currency conversions. Unless the Fund has hedged its foreign currency exposure, foreign securities risk also involves the risk of negative foreign currency rate fluctuations, which may cause the value of securities denominated in such foreign currency (or other instruments through which the Fund has exposure to foreign currencies) to decline in value. Currency exchange rates may fluctuate significantly over short periods of time. Currency hedging strategies, if used, are not always successful. For instance, forward foreign currency exchange contracts, if used by the Fund, could reduce performance if there are unanticipated changes in currency exchange rates.

EMERGING MARKETS RISK is the risk that emerging markets are generally subject to greater market volatility, political, social and economic instability, uncertain trading markets and more

governmental limitations on foreign investments than more developed markets. In addition, companies operating in emerging markets may be subject to lower trading volumes and greater price volatility than companies in more developed markets. Emerging market economies may be based on only a few industries, may be highly vulnerable to changes in local and global trade conditions, and may suffer from extreme and volatile debt burdens or inflation rates. Companies in emerging market countries generally may be subject to less stringent regulatory, disclosure, financial reporting, accounting, auditing and recordkeeping standards than companies in more developed countries. As a result, information, including financial information, about such companies may be less available and reliable, which can impede the Fund’s ability to evaluate such companies. Securities law and the enforcement of systems of taxation in many emerging market countries may change quickly and unpredictably, and the ability to bring and enforce actions (including bankruptcy, confiscatory taxation, expropriation, nationalization of a company’s assets, restrictions on foreign ownership of local companies, restrictions on withdrawing assets from the country, protectionist measures and practices such as share blocking), or to obtain information needed to pursue or enforce such actions, may be limited. Investments in emerging market securities may be subject to additional transaction costs, delays in settlement procedures, unexpected market closures, and lack of timely information.

MULTI-MANAGER RISK is the risk that the sub-advisers’ investment styles will not always be complementary or that the investment adviser’s allocation of assets amongst sub-advisers will not achieve the intended result, which could negatively impact the performance of the Fund. Sub-advisers make investment decisions independently of one another, and may make decisions that conflict with each other.

MANAGEMENT RISK is the risk that a strategy used by the Fund’s investment adviser or sub-advisers may fail to produce the intended results or that imperfections, errors or limitations in the tools and data used by the investment adviser or the sub-advisers may cause unintended results.

DERIVATIVES RISK is the risk that derivatives may pose risks in addition to and greater than those associated with investing directly in securities, currencies and other instruments, may be illiquid or less liquid, more volatile, more difficult to value and leveraged so that small changes in the value of the underlying instrument may produce disproportionate losses to the Fund. Derivatives are also subject to counterparty risk, which is the risk that the other party to the transaction will not perform its contractual obligation. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with investments in more traditional securities and instruments.

SMALL AND MID CAP STOCK RISK is the risk that stocks of small and mid-sized companies may be more volatile than stocks of larger, more established companies. Small and mid-sized companies may have limited product lines or financial resources, may be dependent upon a particular niche of the market, or may be dependent upon a small or inexperienced management group. The securities of small and mid-sized companies may trade less frequently and in lower volume than the securities of larger companies, which could lead to higher transaction costs. Generally, the smaller the company size, the greater the risk.

VALUATION RISK is the risk that the sale price the Fund could receive for a portfolio security may differ from the Fund’s valuation of the security, particularly for securities that trade in low volume or volatile markets or that are valued using a fair value methodology. In addition, the value of the securities in the Fund’s portfolio may change on days when shareholders will not be able to purchase or sell the Fund’s shares.

As with any mutual fund, it is possible to lose money on an investment in the Fund. An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation, any other government agency, or The Northern Trust Company, its affiliates, subsidiaries or any other bank.

FUND PERFORMANCE

The bar chart and table that follow provide an indication of the risks of investing in the Fund by showing (A) changes in the performance of the Fund from year to year, and (B) how the average annual total returns of the Fund compare to those of a broad-based securities market index and a style-specific index (one reflecting the market segments in which the Fund invests), in that order.

The Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future.

Updated performance information for the Fund is available and may be obtained on the Fund’s website at northerntrust.com/funds or by calling 800-595-9111.

CALENDAR YEAR TOTAL RETURN*

* Year to date total return for the six months ended June 30, 2024 was (1.37)%. For the period shown in the bar chart above, the highest quarterly return was 12.93% in the fourth quarter of 2022, and the lowest quarterly return was (20.39)% in the first quarter of 2020.

AVERAGE ANNUAL TOTAL RETURN

(For the periods ended December 31, 2023)

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.

In calculating the federal income taxes due on redemptions, capital gains taxes resulting from redemptions are subtracted from the redemption proceeds and the tax benefits from capital losses resulting from the redemptions are added to the redemption proceeds. Under certain circumstances, the addition of the tax benefits from capital losses resulting from redemptions may cause the Returns after taxes on distributions and sale of Fund shares to be greater than the Returns after taxes on distributions or even the Returns before taxes.

MANAGEMENT

INVESTMENT ADVISER, PORTFOLIO MANAGER AND SUB-ADVISERS. NTI, an indirect subsidiary of Northern Trust Corporation, serves as the investment adviser for the Multi-Manager Global Listed Infrastructure Fund. Kelly Finegan, a Senior Vice President of NTI, and Jim Hardman, a Vice President of NTI, have been managers of the Fund since May 2023. First Sentier Investors (Australia) IM Ltd, KBI Global Investors (North America), Ltd., and Lazard Asset Management LLC each serves as a sub-adviser of the Fund. From time to time, the Fund may have little or no assets allocated to any one particular sub-adviser in light of economic or other conditions, as determined by NTI in its sole discretion. The Northern Trust Company, an affiliate of NTI, serves as transfer agent, custodian and sub-administrator to the Fund.

PURCHASE AND SALE OF FUND SHARES

You may purchase Shares Class shares of the Fund by opening an account directly with Northern Funds (the “Trust”) with a minimum initial investment of $2,500 in the Fund ($500 for an IRA; $250 under the Automatic Investment Plan; and $500 for employees of Northern Trust and its affiliates). The minimum subsequent investment is $50 (except for reinvestments of distributions for which there is no minimum). The Fund reserves the right to waive these minimums. You may also purchase Shares Class shares of the Fund through an account at Northern Trust (or an affiliate) or an authorized intermediary.

If you purchase, sell (redeem) or exchange Shares Class shares through an authorized intermediary, you may be required to pay a commission and/or other forms of compensation to the intermediary. In addition, an authorized intermediary may impose different investment minimums than those set forth above. The Fund is not responsible for any investment minimums imposed by authorized intermediaries or for notifying shareholders of any changes to them.

On any business day, you may sell (redeem) or exchange shares through your account by contacting your Northern Trust account representative or authorized intermediary. If you purchase shares directly from the Trust, you may sell (redeem) or exchange your shares in one of the following ways:

TAX INFORMATION

The Fund’s distributions are generally taxable to you as ordinary income, qualified dividend income, capital gains, or a combination of the three, unless you are investing through a tax-exempt or tax-advantaged arrangement, such as a 401(k) plan or an individual retirement account. Distributions may be taxable upon withdrawal from tax-advantaged accounts.

PAYMENTS TO BROKERS-DEALERS AND OTHER FINANCIAL INTERMEDIARIES

If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.