SPDR SERIES TRUST

Fund Summary

SPDR® MSCI USA Gender Diversity ETF

(formerly, SPDR® SSGA Gender Diversity Index ETF)

Investment Objective

The SPDR MSCI USA Gender Diversity ETF seeks to provide investment results that, before fees and

expenses, correspond generally to the total return performance of an index that tracks U.S. large- and mid-

cap companies exhibiting certain gender diversity and diversity management characteristics.

Fees and Expenses of the Fund

The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund (“Fund Shares”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.

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

Management fees	[0.20]%
Distribution and service (12b-1) fees	None
Other expenses	[0.00]%
Total annual Fund operating expenses	[0.20]%

Example:

This Example is intended to help you compare the cost of investing in 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 or hold all of your Fund 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:

Year 1	Year 3	Year 5	Year 10
$[ ]	$[ ]	$[ ]	$[ ]

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 [ ]% of the average value of its portfolio.

The Fund's Principal Investment Strategy

In seeking to track the performance of the MSCI USA Gender Diversity Select Index (the “Index”), the Fund employs a sampling strategy, which means that the Fund is not required to purchase all of the securities represented in the Index. Instead, the Fund may purchase a subset of the securities in the Index in an effort to hold a portfolio of securities with generally the same risk and return characteristics of the Index. The quantity of holdings in the Fund will be based on a number of factors, including asset size of the Fund. Based on its analysis of these factors, SSGA Funds Management, Inc. (“SSGA FM” or the “Adviser”), the investment adviser to the Fund, either may invest the Fund's assets in a subset of securities in the Index or may invest the Fund's assets in substantially all of the securities represented in the Index in approximately the same proportions as the Index, as determined by the Adviser to be in the best interest of the Fund in pursuing its objective.

Under normal market conditions, the Fund generally invests substantially all, but at least 80%, of its total assets in the securities comprising the Index. In addition, in seeking to track the Index, the Fund may invest in equity securities that are not included in the Index, cash and cash equivalents or money market instruments, such as repurchase agreements and money market funds (including money market funds advised by the Adviser). In seeking to track the

Index, the Fund's assets may be concentrated in an industry or group of industries, but only to the extent that the Index concentrates in a particular industry or group of industries. Swaps and futures contracts (each, a type of derivative instrument) may be used by the Fund in seeking performance that corresponds to the Index and in managing cash flows.

The MSCI USA Gender Diversity Select Index (the “Index”) is designed to represent the performance of companies that exhibit a commitment towards promoting and maintaining a high level of gender diversity across the different levels within their organization, including their corporate board, executive and senior management, and workforce. The selection universe for the Index includes all constituents in the MSCI USA Index (the “Parent Index”), which is designed to measure the performance of the large- and mid-cap segments of the U.S. market.

The Index incorporates certain gender diversity and environmental, social and governance (“ESG”) metrics developed by MSCI ESG Research (a subsidiary of the Index Provider (defined below)) to score and screen each security within the Parent Index. Companies in the Parent Index are first assigned an ESG Controversy Score, which provides an assessment of controversies concerning any negative environmental, social and/or governance impact of a company's operations, products and services. ESG Controversy Scores fall on a 0-10 scale, with 0 representing a company assessed as having involvement in very severe controversies. The Parent Index is screened to remove (i) companies with an ESG Controversy Score of 0 and (ii) companies not assigned an ESG Controversy Score. In addition, the Parent Index is also screened to remove companies with a Labor Rights – Discrimination and Workforce Diversity Controversy score of 0 or 1, which are companies determined as having involvement in certain very severe or severe workforce diversity controversies. Factors affecting this evaluation include, but are not limited to, a history of involvement in discrimination- related legal cases, widespread or egregious instances of discrimination on the basis of sex, race, or ethnicity, resistance to improved practices, and workplace discrimination-related criticism and allegations by non-governmental organizations and/or other third-party observers.

The remaining securities are each assigned an MSCI Gender Diversity Score based on two components: a Women Representation Score and a Diversity Management Score. The Women Representation Score reflects 75% of the weight of the MSCI Gender Diversity Score and evaluates each company based on the following criteria and the company's disclosure of such criteria: (i) percent/number of women on the board of directors, (ii) percent of women in executive management positions, (iii) percent of women in senior management positions, and (iv) percent of all employees who are women. The Diversity Management Score represents the remaining 25% of the weight of the MSCI Gender Diversity Score and evaluates each company based on the following criteria: (i) workforce diversity policies and senior management oversight of such policies; (ii) programs to help attract, retain and promote women in the workforce, including explicit quantitative recruitment targets and employee benefits; and (iii) ability to attract, retain and develop human capital based on its provision of benefits, training and development programs, and employee engagement. Companies are not eligible for inclusion in the Index if they have (i) no women serving on the board of directors and no women serving in executive management positions or (ii) a Women Representation Score of 3 or less (based on a 0-10 scale).

For each GICS (Global Industry Classification Standard) sector, companies are selected for inclusion in the Index primarily in decreasing order of MSCI Gender Diversity Score until 50% of the free float adjusted market capitalization of the sector is reached. The selected securities are weighted by the product of their market capitalization weight in the Parent Index and the MSCI Gender Diversity Score. The weights are then distributed proportionally to sum to 100%. Sector weights in the Index are set equal to the corresponding sector weight in the Parent Index. To mitigate concentration risk, each security's weight in the Index is capped at 4.5%, and any weight exceeding this limit will be redistributed on a pro-rata basis to securities of issuers that do not exceed the 4.5% limit. The index is rebalanced quarterly, and changes are implemented at the end of February, May, August and November. As of August 31, 2023, a significant portion of the Fund comprised companies in the [technology and health care sectors], although this may change from time to time. As of July 31, 2023, the Index comprised [ ] securities.

The Index is sponsored by MSCI, Inc. (the “Index Provider”), which is not affiliated with the Fund or the Adviser. The Index Provider determines the composition of the Index, relative weightings of the securities in the Index and publishes information regarding the market value of the Index.

Principal Risks of Investing in the Fund

As with all investments, there are certain risks of investing in the Fund. Fund Shares will change in value, and you could lose money by investing in the Fund. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Market Risk: The Fund's investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities markets. Investment markets can be volatile and prices of investments can change substantially due to various factors including, but not limited to, economic growth or recession, changes in interest rates, inflation, changes in the actual or perceived creditworthiness of issuers, and general market liquidity. The Fund is subject to the risk that geopolitical events will disrupt securities markets and adversely affect global economies and markets. 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, or other events could have a significant impact on the Fund and its investments.

Equity Investing Risk: The market prices of equity securities owned by the Fund may go up or down, sometimes rapidly or unpredictably. The value of a security may decline for a number of reasons that may directly relate to the issuer and also may decline due to general industry or market conditions that are not specifically related to a particular company. In addition, equity markets tend to move in cycles, which may cause stock prices to fall over short or extended periods of time.

ESG Investing Risk: The Index's incorporation of ESG considerations in its methodology may cause the Fund to make different investments than funds that do not incorporate such considerations in their strategy or investment processes. Under certain economic conditions, this could cause the Fund's investment performance to be worse than funds that do not incorporate such considerations. The Index's incorporation of ESG considerations may 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. The Index methodology incorporates data and scores provided by third parties, which may be unavailable or limited for certain issuers and/or only take into account one or a few of many ESG related components of portfolio companies. In instances where data or scores are unavailable or limited, (i) the Index may include, and the Fund may therefore hold, securities of companies that otherwise would not be included or held if data or scores were available or more complete, or (ii) the Index, and therefore the Fund, may exclude securities of companies that otherwise would have been included or held if data or scores were available or more complete. In addition, ESG information and scores across third party data providers, indexes and other funds may differ and/or be incomparable. To the extent circumstances evolve in between reconstitutions, the Index may include, and the Fund may therefore hold for a period of time, securities of companies that do not align with the Fund's ESG-related objectives and/or criteria.

Gender Diversity Risk: The returns on a portfolio of securities that excludes companies that are not gender diverse may trail the returns on a portfolio of securities that includes companies that are not gender diverse. Investing only in a portfolio of securities of companies that are gender diverse may affect the Fund's exposure to certain types of investments and may adversely impact the Fund's performance depending on whether such investments are in or out of favor in the market.

Fluctuation of Net Asset Value, Share Premiums and Discounts Risk: As with all exchange-traded funds, Fund Shares may be bought and sold in the secondary market at market prices. The trading prices of Fund Shares in the secondary market may differ from the Fund's daily net asset value per share and there may be times when the market price of the shares is more than the net asset value per share (premium) or less than the net asset value per share (discount). This risk is heightened in times of market volatility or periods of steep market declines.

Futures Contract Risk: A futures contract is a standardized agreement that calls for the purchase or sale of a specific asset at a specific price at a specific future time, or cash settlement of the terms of the contract. Transactions in futures contracts can create investment leverage and may have significant volatility. It is possible that a futures contract transaction will result in a much greater loss than the principal amount invested, and the Fund may not be able to close out the futures contract at a favorable time or price. There is no assurance that a liquid secondary market on an exchange will exist for any particular futures contract. In the event no such market exists, it might not be possible to effect closing transactions, and the Fund will be unable to terminate its exposure to the futures contract. There is also a risk of imperfect correlation between movements in the prices of the futures contract and movements in the price of the underlying assets. The counterparty to a futures contract may be unable or unwilling to make timely settlement payments, return the Fund's margin, or otherwise honor its obligations.

Health Care Sector Risk: Companies in the health care sector are subject to extensive government regulation and their profitability can be significantly affected by restrictions on government reimbursement for medical expenses, rising costs of medical products and services, pricing pressure (including price discounting), limited product lines and an increased emphasis on the delivery of healthcare through outpatient services. Companies in

the health care sector are heavily dependent on obtaining and defending patents, which may be time consuming and costly, and the expiration of patents may also adversely affect the profitability of these companies. Health care companies are also subject to extensive litigation based on product liability and similar claims. In addition, their products can become obsolete due to industry innovation, changes in technologies or other market developments. Many new products in the health care sector require significant research and development and may be subject to regulatory approvals, all of which may be time consuming and costly with no guarantee that any product will come to market.

Indexing Strategy/Index Tracking Risk: The Fund is managed with an indexing investment strategy, attempting to track the performance of an unmanaged index of securities, regardless of the current or projected performance of the Index or of the actual securities comprising the Index. This differs from an actively-managed fund, which typically seeks to outperform a benchmark index. As a result, the Fund's performance may be less favorable than that of a portfolio managed using an active investment strategy. The structure and composition of the Index will affect the performance, volatility, and risk of the Index and, consequently, the performance, volatility, and risk of the Fund. Errors in index data, index computations or the construction of the 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. To the extent circumstances evolve in between reconstitutions, the Index may include, and the Fund may therefore hold for a period of time, securities of companies that do not align with the Index's objective and/or criteria. When there are changes made to the component securities of the Index and the Fund in turn makes similar changes to its portfolio, any transaction costs and market exposure arising from such portfolio changes will be borne directly by the Fund and its shareholders. The Fund may recognize gains as a result of rebalancing or reconstituting its securities holdings to reflect changes in the securities included in the Index. The Fund also may be required to distribute any such gains to its shareholders to avoid adverse federal income tax consequences. While the Adviser seeks to track the performance of the Index (i.e., achieve a high degree of correlation with the Index), the Fund's return may not match the return of the Index. The Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities. In addition, the Fund may not be fully invested at times, generally as a result of cash flows into or out of the Fund or reserves of cash held by the Fund to meet redemptions. The Adviser may attempt to track the Index return by investing in fewer than all of the securities in the Index, or in some securities not included in the Index, potentially increasing the risk of divergence between the Fund's return and that of the Index.

Large-Capitalization Securities Risk: Returns on investments in securities of large companies could trail the returns on investments in securities of smaller and mid-sized companies. Larger companies may be unable to respond as quickly as smaller and mid-sized companies to competitive challenges or to changes in business, product, financial, or other market conditions. Larger companies may not be able to maintain growth at the high rates that may be achieved by well-managed smaller and mid-sized companies.

Mid-Capitalization Securities Risk: The securities of mid-capitalization companies may be more volatile and may involve more risk than the securities of larger companies. These companies may have limited product lines, markets or financial resources, may lack the competitive strength of larger companies, and may depend on a few key employees. In addition, these companies may have been recently organized and may have little or no track record of success. The securities of mid-sized companies may trade less frequently and in smaller volumes than more widely held securities. Some securities of mid-sized issuers may be illiquid or may be restricted as to resale, and their values may be volatile.

Swaps Risk: A swap is a two-party contract that generally obligates the parties to exchange payments based on a specified reference security, basket of securities, security index or index component. Swaps can involve greater risks than direct investment in securities because swaps may be leveraged and are subject to counterparty risk (e.g., the risk of a counterparty's defaulting on the obligation or bankruptcy), credit risk and pricing risk (i.e., swaps may be difficult to value). It may not be possible for the Fund to liquidate a swap position at an advantageous time or price, which may result in significant losses.

Technology Sector Risk: Market or economic factors impacting technology companies and companies that rely heavily on technological advances could have a major effect on the value of the Fund's investments. The value of stocks of technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Stocks of technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect

profitability. Additionally, companies in the technology sector may face dramatic and often unpredictable changes in growth rates and competition for the services of qualified personnel.

Unconstrained Sector Risk: The Fund may invest a substantial portion of its assets within one or more economic sectors or industries, which may change from time to time. Greater investment focus on one or more sectors or industries increases the potential for volatility and the risk that events negatively affecting such sectors or industries could reduce returns, potentially causing the value of the Fund's Shares to decrease, perhaps significantly.

Valuation Risk: Some portfolio holdings, potentially a large portion of the Fund's investment portfolio, may be valued on the basis of factors other than market quotations. This may occur more often in times of market turmoil or reduced liquidity. There are multiple methods that can be used to value a portfolio holding when market quotations are not readily available. The value established for any portfolio holding at a point in time might differ from what would be produced using a different methodology or if it had been priced using market quotations. Portfolio holdings that are valued using techniques other than market quotations, including “fair valued” securities, may be subject to greater fluctuation in their valuations from one day to the next than if market quotations were used. In addition, there is no assurance that the Fund could sell or close out a portfolio position for the value established for it at any time, and it is possible that the Fund would incur a loss because a portfolio position is sold or closed out at a discount to the valuation established by the Fund at that time.

Fund Performance

The following bar chart and table provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for certain time periods compare with the average annual returns of the Index and of a relevant broad-based securities index. 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 is available by calling 1-866-787-2257 or visiting our website at https://www.ssga.com/spdrs.

Annual Total Returns (years ended 12/31)*

[To be provided by subsequent amendment]

Average Annual Total Returns (for periods ended 12/31/22)

The after-tax returns presented in the table below are calculated using highest historical individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown below. After-tax returns are not relevant to investors who hold Fund Shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts. The returns after taxes can exceed the returns before taxes due to an assumed tax benefit for a shareholder from realizing a capital loss on a sale of Fund Shares. Effective December 8, 2022 (the “Benchmark Index Change Date”), the Fund's benchmark index changed from the SSGA Gender Diversity Index (the “Previous Benchmark Index”) to the MSCI USA Gender Diversity Select Index, consistent with a change in the Fund's principal investment strategy to track the performance of the current index. Performance of the Fund prior to the Benchmark Index Change Date is therefore based on the Fund's investment strategy to track the Previous Benchmark Index and may have been different had the Fund tracked the current index.

[To be provided by subsequent amendment]

Portfolio Management

Investment Adviser

SSGA FM serves as the investment adviser to the Fund.

The Adviser and certain of its affiliates intend to make contributions to a charitable organization, which is tax-exempt under section 501(c)(3) of the Internal Revenue Code of 1986, as amended (the “Code”), developed to provide financial support to third party charitable organizations which seek to enhance gender equity through educational efforts. Charitable contributions from the Adviser and certain of its affiliates will be benchmarked to the assets under management of the Fund. The charitable organization will seek to make donations to identified charitable organizations that support continuing educational efforts designed to mitigate gender inequality in corporate America, and will aim to engage with other organizations in an effort to increase the amount of philanthropic dollars available for such initiatives.

The charitable organization will not participate in, or have any influence on the day-to-day operations of, the Fund or the Adviser's management of the Fund.

Portfolio Managers

The professionals primarily responsible for the day-to-day management of the Fund are Amy Cheng, Kathleen Morgan, and Amy Scofield.

Amy Cheng is a Vice President of the Adviser and a Senior Portfolio Manager in the Global Equity Beta Solutions Group. She joined the Adviser in 2000.

Kathleen Morgan, CFA, is a Vice President of the Adviser and a Senior Portfolio Manager in the Global Equity Beta Solutions Group. She joined the Adviser in 2017.

Amy Scofield is a Principal of the Adviser and a Portfolio Manager in the Global Equity Beta Solutions Group. She joined the Adviser in 2010.

Purchase and Sale Information

The Fund will issue (or redeem) Fund Shares to certain institutional investors (typically market makers or other broker-dealers) only in large blocks of Fund Shares known as “Creation Units.” Creation Unit transactions are conducted in exchange for the deposit or delivery of a designated portfolio of in-kind securities and/or cash.

Individual Fund Shares may only be purchased and sold on the NYSE Arca, Inc., other national securities exchanges, electronic crossing networks and other alternative trading systems through your broker-dealer at market prices. Because Fund Shares trade at market prices rather than at net asset value (“NAV”), Fund Shares may trade at a price greater than NAV (premium) or less than NAV (discount). When buying or selling Fund Shares in the secondary market, you may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase Fund Shares (bid) and the lowest price a seller is willing to accept for Fund Shares (ask) (the “bid-ask spread”). Recent information regarding the Fund's NAV, market price, premiums and discounts, and bid-ask spreads is available at https://www.ssga.com/spdrs.

Tax Information

The Fund's distributions are expected to be taxed as ordinary income, qualified dividend income and/or capital gains, unless you are investing through a tax-advantaged arrangement, such as a 401(k) plan or individual retirement account. Any withdrawals made from such tax-advantaged arrangement may be taxable to you.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase Fund Shares through a broker-dealer or other financial intermediary (such as a bank), the Adviser or its affiliates may pay the financial intermediary for certain activities related to the Fund, including educational training programs, conferences, the development of technology platforms and reporting systems, or other services related to the sale or promotion of the Fund. 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.

Additional Strategies Information

Principal Strategies

General. Please see “The Fund's Principal Investment Strategy” section under “Fund Summary” above for a discussion of the Fund's principal investment strategy. The Fund may invest in various types of securities and engage in various investment techniques which are not the principal focus of the Fund and therefore are not described in this Prospectus. These securities, techniques and practices, together with their risks, are described in the Statement of Additional Information (the “SAI”), which you may obtain free of charge by contacting shareholder services (see the back cover of this Prospectus for the address and phone number).

The Adviser seeks to track the performance of the Fund's Index as closely as possible (i.e., obtain a high degree of correlation with the Index). A number of factors may affect the Fund's ability to achieve a high degree of correlation with the Index, and there can be no guarantee that the Fund will achieve a high degree of correlation. For example, the Fund may not be able to achieve a high degree of correlation with the Index when there are practical difficulties or substantial costs involved in compiling a portfolio of securities to follow the Index, when a security in the Index becomes temporarily illiquid, unavailable or less liquid, or legal restrictions exist that prohibit the Fund from investing in a security in the Index.

The Adviser will utilize a sampling strategy in managing the Fund. Sampling means that the Adviser uses quantitative analysis to select securities, including securities in the Index, outside of the Index and derivatives that have a similar investment profile as the Index in terms of key risk factors, performance attributes and other economic characteristics. These include industry weightings, market capitalization, and other financial characteristics of securities. The quantity of holdings in the Fund will be based on a number of factors, including asset size of the Fund. In addition, from time to time, securities are added to or removed from the Index. The Adviser may sell securities that are represented in the Index, or purchase securities that are not yet represented in the Index, in anticipation of their removal from or addition to the Index. Further, the Adviser may choose to overweight securities in the Index, purchase or sell securities not in the Index, or utilize various combinations of other available techniques, in seeking to track the Index.

As described in the SAI, the Fund has adopted a non-fundamental investment policy to invest at least 80% of its net assets, plus the amount of borrowings for investment purposes, in investments suggested by its name, measured at the time of investment. The Fund will provide shareholders with at least 60 days' notice prior to any change in this non-fundamental 80% investment policy. The Board of Trustees of the Trust (the “Board”) may change the Fund's investment strategy, Index and other policies without shareholder approval, except as otherwise indicated in this Prospectus or in the SAI. The Board may also change the Fund's investment objective without shareholder approval.

Non-Principal Strategies

Certain Other Investments. The Fund may invest in structured notes (notes on which the amount of principal repayment and interest payments are based on the movement of one or more specified factors such as the movement of a particular security or index), swaps and options contracts. Swaps and options contracts and structured notes may be used by the Fund in seeking performance that corresponds to its Index and in managing cash flows.

Temporary Defensive Positions. In certain situations or market conditions, the Fund may temporarily depart from its normal investment policies and strategies, provided that the alternative is consistent with the Fund's investment objective and is in the best interest of the Fund. For example, the Fund may make larger than normal investments in derivatives to maintain exposure to its Index if it is unable to invest directly in a component security.

Borrowing Money. The Fund may borrow money from a bank as permitted by the Investment Company Act of 1940, as amended (“1940 Act”), or other governing statute, by the rules thereunder, or by the U.S. Securities and Exchange Commission (“SEC”) or other regulatory agency with authority over the Fund, but only for temporary or emergency purposes. The 1940 Act presently allows the Fund to borrow from any bank (including pledging, mortgaging or hypothecating assets) in an amount up to 33 1/3% of its total assets (not including temporary borrowings not in excess of 5% of its total assets). The Fund may also invest in reverse repurchase agreements or similar financing transactions. Consistent with a rule under the 1940 Act, the Fund may treat such investments as either borrowings or derivatives transactions. To the extent the Fund treats reverse repurchase agreements or similar financing transactions as borrowings, such investments will also be included in the 33 1/3% limit. Under normal circumstances, any borrowings by the Fund (including investments in reverse repurchase agreements or similar financing transactions treated as borrowings) will not exceed 10% of the Fund's total assets.

Lending of Securities. The Fund may lend its portfolio securities in an amount not to exceed 40% of the value of its net assets via a securities lending program through its securities lending agent, State Street Bank and Trust Company (“State Street” or the “Lending Agent”), to brokers, dealers and other financial institutions desiring to borrow securities to complete transactions and for other purposes. A securities lending program allows the Fund to receive a portion of the income generated by lending its securities and investing the respective collateral. The Fund will receive collateral for each loaned security which is at least equal to the market value of that security, marked to market each trading day. To the extent the Fund receives cash collateral, as of the date of this Prospectus, the Adviser expects to invest such cash collateral in a fund managed by the Adviser that invests in: a broad range of money market instruments; certificates of deposit and time deposits of U.S. and foreign banks; commercial paper and other high quality obligations of U.S. or foreign companies; asset-backed securities; mortgage-related securities; repurchase agreements; and shares of money market funds. In the securities lending program, the borrower generally has the right to vote the loaned securities; however, the Fund may call loans to vote proxies if a material issue affecting the Fund's economic interest in the investment is to be voted upon. Security loans may be terminated at any time by the Fund.

Additional Risk Information

The following section provides information regarding the principal risks identified under “Principal Risks of Investing in the Fund” in the Fund Summary along with additional risk information.

Principal Risks

Counterparty Risk. The Fund will be subject to credit risk with respect to the counterparties with which the Fund enters into derivatives contracts and other transactions such as repurchase agreements or reverse repurchase agreements. The Fund's ability to profit from these types of investments and transactions will depend on the willingness and ability of its counterparty to perform its obligations. If a counterparty fails to meet its contractual obligations, the Fund may be unable to terminate or realize any gain on the investment or transaction, resulting in a loss to the Fund. The Fund may experience significant delays in obtaining any recovery in an insolvency, bankruptcy, or other reorganization proceeding involving its counterparty (including recovery of any collateral posted by it) and may obtain only a limited recovery or may obtain no recovery in such circumstances. If the Fund holds collateral posted by its counterparty, it may be delayed or prevented from realizing on the collateral in the event of a bankruptcy or insolvency proceeding relating to the counterparty. Under applicable law or contractual provisions, including if the Fund enters into an investment or transaction with a financial institution and such financial institution (or an affiliate of the financial institution) experiences financial difficulties, then the Fund may in certain situations be prevented or delayed from exercising its rights to terminate the investment or transaction, or to realize on any collateral and may result in the suspension of payment and delivery obligations of the parties under such investment or transactions or in another institution being substituted for that financial institution without the consent of the Fund. Further, the Fund may be subject to “bail-in” risk under applicable law whereby, if required by the financial institution's authority, the financial institution's liabilities could be written down, eliminated or converted into equity or an alternative instrument of ownership. A bail-in of a financial institution may result in a reduction in value of some or all of its securities and, if the Fund holds such securities or has entered into a transaction with such a financial security when a bail-in occurs, the Fund may also be similarly impacted.

Derivatives Risk. A derivative is a financial contract the value of which depends on, or is derived from, the value of an underlying asset, interest rate, or index. Derivative transactions typically involve leverage and may have significant volatility. It is possible that a derivative transaction will result in a loss greater than the principal amount invested, and the Fund may not be able to close out a derivative transaction at a favorable time or price. Risks associated with derivative instruments include potential changes in value in response to interest rate changes or other market developments or as a result of the counterparty's credit quality; the potential for the derivative transaction not to have the effect the Adviser anticipated or a different or less favorable effect than the Adviser anticipated; the failure of the counterparty to the derivative transaction to perform its obligations under the transaction or to settle a trade; possible mispricing or improper valuation of the derivative instrument; imperfect correlation in the value of a derivative with the asset, rate, or index underlying the derivative; the risk that the Fund may be required to post collateral or margin with its counterparty, and will not be able to recover the collateral or margin in the event of the counterparty's insolvency or bankruptcy; the risk that the Fund will experience losses on its derivatives investments and on its other portfolio investments, even when the derivatives investments may be intended in part or entirely to hedge those portfolio

investments; the risks specific to the asset underlying the derivative instrument; lack of liquidity for the derivative instrument, including, without limitation, absence of a secondary trading market; the potential for reduced returns to the Fund due to losses on the transaction and an increase in volatility; the potential for the derivative transaction to have the effect of accelerating the recognition of gain; and legal risks arising from the documentation relating to the derivative transaction.

Futures Contract Risk. The risk of loss relating to the use of futures contracts is potentially unlimited. The ability to establish and close out positions in futures contracts will be subject to the development and maintenance of a liquid secondary market. There is no assurance that a liquid secondary market on an exchange will exist for any particular futures contract or at any particular time. In the event no such market exists, it might not be possible to effect closing transactions, and the Fund will be unable to terminate the futures contract. In using futures contracts, the Fund will be reliant on the ability of the Adviser to predict market and price movements correctly; the skills needed to use such futures contracts successfully are different from those needed for traditional portfolio management. If the Fund uses futures contracts for hedging purposes, there is a risk of imperfect correlation between movements in the prices of the futures contracts and movements in the securities or index underlying the futures contracts or movements in the prices of the Fund's investments that are the subject of such hedge. The prices of futures contracts, for a number of reasons, may not correlate perfectly with movements in the securities or index underlying them. For example, participants in the futures markets are subject to margin deposit requirements. Such requirements may cause investors to take actions with respect to their futures positions that they would not otherwise take. The margin requirements in the futures markets may be less onerous than margin requirements in the securities markets in general, and as a result those markets may attract more speculators than the securities markets do. Increased participation by speculators in those markets may cause temporary price distortions. Due to the possibility of price distortion, even a correct forecast of general market trends by the Adviser still may not result in a successful futures activity over a very short time period. The risk of a position in a futures contract may be very large compared to the relatively low level of margin the Fund is required to deposit. The Fund will typically be required to post margin with its futures commission merchant in connection with its transactions in futures contracts. In many cases, a relatively small price movement in a futures contract may result in immediate and substantial loss or gain to the investor relative to the size of a required margin deposit. The Fund will incur brokerage fees in connection with its futures transactions. In the event of an insolvency of the futures commission merchant or a clearing house, the Fund may not be able to recover all (or any) of the margin it has posted with the futures commission merchant, or to realize the value of any increase in the price of its positions, or it may experience a significant delay in doing so. The Commodity Futures Trading Commission (the “CFTC”) and the various exchanges have established limits referred to as “speculative position limits” on the maximum net long or net short positions that any person and certain affiliated entities may hold or control in a particular futures contract. In addition, federal position limits apply to swaps that are economically equivalent to futures contracts that are subject to CFTC-set speculative limits. All positions owned or controlled by the same person or entity, even if in different accounts, must be aggregated for purposes of complying with position limits. It is possible that the positions of different clients managed by the Adviser may be aggregated for this purpose. Therefore, the trading decisions of the Adviser may have to be modified and positions held by the Fund liquidated in order to avoid exceeding such limits. The modification of investment decisions or the elimination of open positions, if it occurs, may adversely affect the performance of the Fund. A violation of position limits could also lead to regulatory action materially adverse to the Fund's investment strategy. In addition, exchanges may establish accountability levels applicable to a futures contract instead of position limits, provided that the futures contract is not subject to federal position limits. An exchange may order a person who holds or controls a position in excess of a position accountability level not to further increase its position, to comply with any prospective limit that exceeds the size of the position owned or controlled, or to reduce any open position that exceeds the position accountability level if the exchange determines that such action is necessary to maintain an orderly market. Position accountability levels could adversely affect the Fund's ability to establish and maintain positions in commodity futures contracts to which such levels apply, if the Fund were to trade in such contracts, and the Fund's ability to achieve its investment objective.

Futures contracts traded on markets outside the U.S. are not generally subject to the same level of regulation by the CFTC or other U.S. regulatory entities as contracts traded in the U.S., including without limitation as to the execution, delivery, and clearing of transactions. U.S. regulators neither regulate the activities of a foreign exchange, nor have the power to compel enforcement of the rules of the foreign exchange or the laws of the

foreign country in question. Margin and other payments made by the Fund may not be afforded the same protections as are afforded those payments in the U.S., including in connection with the insolvency of an executing or clearing broker or a clearinghouse or exchange. Certain foreign futures contracts may be less liquid and more volatile than U.S. contracts.

Swaps Risk. A swap is a two-party contract that generally obligates the parties to exchange payments based on a specified reference security, basket of securities, security index or index component. Swaps can involve greater risks than direct investment in securities because swaps may be leveraged and are subject to counterparty risk (e.g., the risk of a counterparty's defaulting on the obligation or bankruptcy), credit risk and pricing risk (i.e., swaps may be difficult to value). Swaps may also be considered illiquid. It may not be possible for the Fund to liquidate a swap position at an advantageous time or price, which may result in significant losses.

Equity Investing Risk. The market prices of equity securities owned by the Fund may go up or down, sometimes rapidly or unpredictably. The value of a security may decline for a number of reasons that may directly relate to the issuer, such as management performance, financial leverage, non-compliance with regulatory requirements, and reduced demand for the issuer's goods or services. The values of equity securities also may decline due to general industry or market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates, or adverse investor sentiment generally. In addition, equity markets tend to move in cycles, which may cause stock prices to fall over short or extended periods of time.

ESG Investing Risk. The Index's incorporation of environmental, social and/or governance considerations in its methodology may cause the Fund to make different investments than funds that do not incorporate such considerations in their investment strategy or processes. The Index's incorporation of ESG considerations may 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. In addition, the Fund's investments in certain companies may be susceptible to various factors that may impact their businesses or operations, including costs associated with government budgetary constraints that impact publicly funded projects and clean energy initiatives, the effects of general economic conditions throughout the world, increased competition from other providers of services, unfavorable tax laws or accounting policies and high leverage. The Index methodology incorporates data and scores provided by third parties, which may be unavailable or limited for certain issuers and/or only take into account one or a few of many ESG related components of portfolio companies. In instances where data or scores are unavailable or limited, (i) the Index may include, and the Fund may therefore hold, securities of companies that otherwise would not be included or held if data or scores were available or more complete, or (ii) the Index, and therefore the Fund, may exclude securities of companies that otherwise would have been included or held if data or scores were available or more complete. In addition, ESG information and scores across third party data providers, indexes and other funds may differ and/or be incomparable. To the extent circumstances evolve in between reconstitutions, the Index may include, and the Fund may therefore hold for a period of time, securities of companies that do not align with the Fund's ESG-related objectives and/or criteria. The Fund may invest in companies that do not reflect the beliefs and values of any particular investor.

Fluctuation of Net Asset Value, Share Premiums and Discounts Risk. The net asset value of Fund Shares will generally fluctuate with changes in the market value of the Fund's securities holdings. The market prices of Fund Shares will generally fluctuate in accordance with changes in the Fund's net asset value and supply and demand of Fund Shares on the Exchange. It cannot be predicted whether Fund Shares will trade below, at or above their net asset value. Price differences may be due, in large part, to the fact that supply and demand forces at work in the secondary trading market for Fund Shares will be closely related to, but not identical to, the same forces influencing the prices of the securities of the Index trading individually or in the aggregate at any point in time. The market prices of Fund Shares may deviate significantly from the net asset value of Fund Shares during periods of market volatility. However, given that Fund Shares can be created and redeemed in Creation Units (unlike shares of many closed-end funds, which frequently trade at appreciable discounts from, and sometimes at premiums to, their net asset value), the Adviser believes that large discounts or premiums to the net asset value of Fund Shares should not be sustained over long periods. While the creation/redemption feature is designed to make it likely that Fund Shares normally will trade close to the Fund's net asset value, disruptions to creations and redemptions or market volatility may result in trading

prices that differ significantly from the Fund's net asset value. If an investor purchases Fund Shares at a time when the market price is at a premium to the net asset value of Fund Shares or sells at a time when the market price is at a discount to the net asset value of Fund Shares, then the investor may sustain losses.

Gender Diversity Risk. The returns on a portfolio of securities that excludes companies that are not gender diverse may trail the returns on a portfolio of securities that includes companies that are not gender diverse. Investing only in a portfolio of securities of companies that are gender diverse may affect the Fund's exposure to certain types of investments and may adversely impact the Fund's performance depending on whether such investments are in or out of favor in the market.

Health Care Sector Risk. Companies in the health care sector are subject to extensive government regulation and their profitability can be significantly affected by restrictions on government reimbursement for medical expenses, rising costs of medical products and services, pricing pressure (including price discounting), limited product lines and an increased emphasis on the delivery of healthcare through outpatient services. Companies in the health care sector are heavily dependent on obtaining and defending patents, which may be time consuming and costly, and the expiration of patents may also adversely affect the profitability of these companies. Health care companies are also subject to extensive litigation based on product liability and similar claims. In addition, their products can become obsolete due to industry innovation, changes in technologies or other market developments. Many new products in the health care sector require significant research and development and may be subject to regulatory approvals, all of which may be time consuming and costly with no guarantee that any product will come to market.

Indexing Strategy/Index Tracking Risk. The Fund is managed with an indexing investment strategy, attempting to track the performance of an unmanaged index of securities. The Fund will seek to provide investment results that correspond generally to the performance of the Index, regardless of the current or projected performance of the Index or of the actual securities comprising the Index. This differs from an actively-managed fund, which typically seeks to outperform a benchmark index. The Fund generally will buy and will not sell a security included in the Index as long as the security is part of the Index regardless of any sudden or material decline in value or foreseeable material decline in value of the security, even though the Adviser may make a different investment decision for other actively managed accounts or portfolios that hold the security. As a result, the Fund's performance may be less favorable than that of a portfolio managed using an active investment strategy. The structure and composition of the Index will affect the performance, volatility, and risk of the Index (in absolute terms and by comparison with other indices) and, consequently, the performance, volatility, and risk of the Fund. Errors in index data, index computations or the construction of the 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. To the extent circumstances evolve in between reconstitutions, the Index may include, and the Fund may therefore hold for a period of time, securities of companies that do not align with the Index's objective and/or criteria. While the Adviser seeks to track the performance of the Index (i.e., achieve a high degree of correlation with the Index), the Fund's return may not match the return of the Index for a number of reasons. For example, the return on the sample of securities purchased by the Fund (or the return on securities not included in the Index) may not correlate precisely with the return of the Index. The Fund incurs a number of operating expenses not applicable to the Index, and incurs costs in buying and selling securities. In addition, the Fund may not be fully invested at times, either as a result of cash flows into or out of the Fund or reserves of cash held by the Fund to meet redemptions. The Adviser may attempt to track the Index return by investing in fewer than all of the securities in the Index, or in some securities not included in the Index, potentially increasing the risk of divergence between the Fund's return and that of the Index. Changes in the composition of the Index and regulatory requirements also may impact the Fund's ability to match the return of the Index. The Adviser may apply one or more “screens” or investment techniques to refine or limit the number or types of issuers included in the Index in which the Fund may invest. Application of such screens or techniques may result in investment performance below that of the Index and may not produce results expected by the Adviser. Index tracking risk may be heightened during times of increased market volatility or other unusual market conditions.

Pursuant to the Index methodology, a security may be removed from the Index in the event that it does not comply with the eligibility requirements of the Index. As a result, the Fund may be forced to sell securities at inopportune times and/or unfavorable prices due to these changes in the Index components. When there are changes made to the component securities of the Index and the Fund in turn makes similar changes to its portfolio to attempt to increase the correlation between the Fund's portfolio and the Index, any transaction costs and market exposure arising from

such portfolio changes will be borne directly by the Fund and its shareholders. Unscheduled changes to the Index may expose the Fund to additional tracking error risk. The Fund may recognize gains as a result of rebalancing or reconstituting its securities holdings to reflect changes in the securities included in the Index. The Fund also may be required to distribute any such gains to its shareholders to avoid adverse federal income tax consequences.

Large-Capitalization Securities Risk. Securities issued by large-capitalization companies may present risks not present in smaller companies. For example, larger companies may be unable to respond as quickly as smaller and mid-sized companies to competitive challenges or to changes in business, product, financial, or other market conditions. Larger companies may not be able to maintain growth at the high rates that may be achieved by well-managed smaller and mid-sized companies, especially during strong economic periods. Returns on investments in securities of large companies could trail the returns on investments in securities of smaller and mid-sized companies.

Leveraging Risk. Borrowing transactions, reverse repurchase agreements, certain derivatives transactions, securities lending transactions and other investment transactions such as when-issued, delayed-delivery, or forward commitment transactions may create investment leverage. If the Fund engages in transactions that have a leveraging effect on the Fund's investment portfolio, the value of the Fund will be potentially more volatile and all other risks will tend to be compounded. This is because leverage generally creates investment risk with respect to a larger base of assets than the Fund would otherwise have and so magnifies the effect of any increase or decrease in the value of the Fund's underlying assets. The use of leverage is considered to be a speculative investment practice and may result in losses to the Fund. Certain derivatives have the potential for unlimited loss, regardless of the size of the initial investment. The use of leverage may cause the Fund to liquidate positions when it may not be advantageous to do so to satisfy repayment, interest payment, or margin obligations or to meet asset coverage requirements.

Liquidity Risk. Liquidity risk is the risk that the Fund may not be able to dispose of investments readily at a favorable time or prices (or at all) or at prices approximating those at which the Fund currently values them. For example, certain investments may be subject to restrictions on resale, may trade in the over-the-counter market or in limited volume, or may not have an active trading market. Illiquid investments may trade at a discount from comparable, more liquid investments and may be subject to wide fluctuations in market value. It may be difficult for the Fund to value illiquid investments accurately. The market for certain investments may become illiquid under adverse market or economic conditions independent of any specific adverse changes in the conditions of a particular issuer. If the liquidity of the Fund's holdings deteriorates, it may lead to differences between the market price of Fund Shares and the net asset value of Fund Shares, and could result in the Fund Shares being less liquid. Disposal of illiquid investments may entail registration expenses and other transaction costs that are higher than those for liquid investments. The Fund may seek to borrow money to meet its obligations (including among other things redemption obligations) if it is unable to dispose of illiquid investments, resulting in borrowing expenses and possible leveraging of the Fund.

Market Risk. Market prices of investments held by the Fund will go up or down, sometimes rapidly or unpredictably. The Fund's investments are subject to changes in general economic conditions, general market fluctuations and the risks inherent in investment in securities markets. Investment markets can be volatile, and prices of investments can change substantially due to various factors, including, but not limited to, economic growth or recession, changes in interest rates, inflation, changes in actual or perceived creditworthiness of issuers and general market liquidity. Even if general economic conditions do not change, the value of an investment in the Fund could decline if the particular industries, sectors or companies in which the Fund invests do not perform well or are adversely affected by events. Further, legal, political, regulatory and tax changes also may cause fluctuations in markets and securities prices. Local, regional or global events such as war, military conflicts, acts of terrorism, natural disasters, public health issues, or other events could have a significant impact on the Fund and its investments. A widespread outbreak of an infectious illness, such as COVID-19, and efforts to contain its spread, may result in market volatility, inflation, reduced liquidity of certain instruments, disruption in the trading of certain instruments, and systemic economic weakness. The foregoing could impact the Fund and its investments and result in disruptions to the services provided to the Fund by its service providers.

Additionally, in March 2023, the shutdown of certain financial institutions raised economic concerns over disruption in the U.S. banking system. There can be no certainty that the actions taken by the U.S. government to strengthen public confidence in the U.S. banking system will be effective in mitigating the effects of financial institution failures on the economy and restoring public confidence in the U.S. banking system.

Mid-Capitalization Securities Risk. The securities of mid-capitalization companies may be more volatile and may involve more risk than the securities of larger companies. These companies may have limited product lines, markets or financial resources, may lack the competitive strength of larger companies, and may depend on a few key employees. In addition, these companies may have been recently organized and may have little or no track record of success. The securities of mid-sized companies may trade less frequently and in smaller volumes than more widely held securities. The prices of these securities may fluctuate more sharply than those of other securities, and the Fund may experience some difficulty in establishing or closing out positions in these securities at prevailing market prices. There may be less publicly available information about the issuers of these securities or less market interest in these securities than in the case of larger companies, both of which can cause significant price volatility. Some securities of mid-sized issuers may be illiquid or may be restricted as to resale. Returns on investments in securities of mid-capitalization companies could trail the returns on investments in securities of larger or smaller companies.

Technology Sector Risk. Market or economic factors impacting technology companies and companies that rely heavily on technological advances could have a major effect on the value of the Fund's investments. The value of stocks of technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Technology companies may have limited product lines, markets, financial resources or personnel. Stocks of technology companies and companies that rely heavily on technology, especially those of smaller, less-seasoned companies, tend to be more volatile than the overall market. Technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability. Additionally, companies in the technology sector may face dramatic and often unpredictable changes in growth rates and competition for the services of qualified personnel.

Unconstrained Sector Risk. The Fund may invest a substantial portion of its assets within one or more economic sectors or industries, which may change from time to time. When the Fund focuses its investments in a particular industry or sector, financial, economic, business, and other developments affecting issuers in that industry, market, or economic sector will have a greater effect on the Fund than if it had not focused its assets in that industry, market, or economic sector, which may increase the volatility of the Fund.

Valuation Risk. Some portfolio holdings, potentially a large portion of the Fund's investment portfolio, may be valued on the basis of factors other than market quotations. This may occur more often in times of market turmoil or reduced liquidity. There are multiple methods that can be used to value a portfolio holding when market quotations are not readily available. The value established for any portfolio holding at a point in time might differ from what would be produced using a different methodology or if it had been priced using market quotations. Portfolio holdings that are valued using techniques other than market quotations, including “fair valued” securities, may be subject to greater fluctuation in their valuations from one day to the next than if market quotations were used. Technological issues or other service disruption issues involving third-party service providers may cause the Fund to value its investments incorrectly. In addition, there is no assurance that the Fund could sell or close out a portfolio position for the value established for it at any time, and it is possible that the Fund would incur a loss because a portfolio position is sold or closed out at a discount to the valuation established by the Fund at that time.

Non-Principal Risks

Authorized Participants, Market Makers and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as Authorized Participants (“APs”), which are responsible for the creation and redemption activity for the Fund. In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Fund Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

Cash Transaction Risk. To the extent the Fund sells portfolio securities to meet some or all of a redemption request with cash, the Fund may incur taxable gains or losses that it might not have incurred had it made redemptions entirely in-kind. As a result, the Fund may pay out higher annual capital gain distributions than if the in-kind redemption process was used.

Concentration Risk. The Fund's assets may be concentrated in an industry or group of industries, but only to the extent that the Fund's underlying Index concentrates in a particular industry or group of industries. When the Fund focuses its investments in a particular industry or sector, financial, economic, business, and other developments affecting issuers in that industry, market, or economic sector will have a greater effect on the Fund than if it had not focused its assets in that industry, market, or economic sector, which may increase the volatility of the Fund.

Conflicts of Interest Risk. An investment in the Fund will be subject to a number of actual or potential conflicts of interest. For example, the Adviser or its affiliates may provide services to the Fund, such as securities lending agency services, custodial, administrative, bookkeeping, and accounting services, transfer agency and shareholder servicing, securities brokerage services, and other services for which the Fund would compensate the Adviser and/or such affiliates. The Fund may invest in other pooled investment vehicles sponsored, managed, or otherwise affiliated with the Adviser. There is no assurance that the rates at which the Fund pays fees or expenses to the Adviser or its affiliates, or the terms on which it enters into transactions with the Adviser or its affiliates will be the most favorable available in the market generally or as favorable as the rates the Adviser or its affiliates make available to other clients. Because of its financial interest, the Adviser will have an incentive to enter into transactions or arrangements on behalf of the Fund with itself or its affiliates in circumstances where it might not have done so in the absence of that interest, provided that the Adviser will comply with applicable regulatory requirements.

The Adviser and its affiliates serve as investment adviser to other clients and may make investment decisions that may be different from those that will be made by the Adviser on behalf of the Fund. For example, the Adviser may provide asset allocation advice to some clients that may include a recommendation to invest in or redeem from particular issuers while not providing that same recommendation to all clients invested in the same or similar issuers. The Adviser may (subject to applicable law) be simultaneously seeking to purchase (or sell) investments for the Fund and to sell (or purchase) the same investment for accounts, funds, or structured products for which it serves as asset manager, or for other clients or affiliates. The Adviser and its affiliates may invest for clients in various securities that are senior, pari passu or junior to, or have interests different from or adverse to, the securities that are owned by the Fund. The Adviser or its affiliates, in connection with its other business activities, may acquire material nonpublic confidential information that may restrict the Adviser from purchasing securities or selling securities for itself or its clients (including the Fund) or otherwise using such information for the benefit of its clients or itself.

The foregoing does not purport to be a comprehensive list or complete explanation of all potential conflicts of interests which may affect the Fund. The Fund may encounter circumstances, or enter into transactions, in which conflicts of interest that are not listed or discussed above may arise.

Costs of Buying and Selling Shares. Investors buying or selling Fund Shares in the secondary market will pay brokerage commissions or other charges imposed by brokers, as determined by that broker. Brokerage commissions are often a fixed amount and may be a significant proportional cost for investors seeking to buy or sell relatively small amounts of Fund Shares. In addition, secondary market investors will also incur the cost of the difference between the price that an investor is willing to pay for Fund Shares (the “bid” price) and the price at which an investor is willing to sell Fund Shares (the “ask” price). This difference in bid and ask prices is often referred to as the “spread” or “bid/ask spread.” The bid/ask spread varies over time for Fund Shares based on trading volume and market liquidity, and is generally lower if Fund Shares have more trading volume and market liquidity and higher if Fund Shares have little trading volume and market liquidity. Further, increased market volatility may cause increased bid/ask spreads. Due to the costs of buying or selling Fund Shares, including bid/ask spreads, frequent trading of Fund Shares may significantly reduce investment results and an investment in Fund Shares may not be advisable for investors who anticipate regularly making small investments.

Cybersecurity Risk. With the increased use of technologies such as the Internet and the dependence on computer systems to perform business and operational functions, funds (such as the Fund) and their service providers (including the Adviser) may be prone to operational and information security risks resulting from cyber-attacks and/or technological malfunctions. In general, cyber-attacks are deliberate, but unintentional events may have similar effects. Cyber-attacks include, among others, stealing or corrupting data maintained online or digitally, preventing legitimate users from accessing information or services on a website, releasing confidential information without authorization, and causing operational disruption. Successful cyber-attacks against, or security breakdowns of, the Fund, the Adviser or a custodian, transfer agent, or other affiliated or third-party service provider may adversely affect the Fund or its shareholders. For instance, cyber-attacks or technical malfunctions may interfere with the processing of shareholder or

other transactions, affect the Fund's ability to calculate its NAV, cause the release of private shareholder information or confidential Fund information, impede trading, cause reputational damage, and subject the Fund to regulatory fines, penalties or financial losses, reimbursement or other compensation costs, and additional compliance costs. Cyber-attacks or technical malfunctions may render records of Fund assets and transactions, shareholder ownership of Fund Shares, and other data integral to the functioning of the Fund inaccessible or inaccurate or incomplete. The Fund may also incur substantial costs for cybersecurity risk management in order to prevent cyber incidents in the future. The Fund and its shareholders could be negatively impacted as a result. While the Adviser has established business continuity plans and systems designed to minimize the risk of cyber-attacks through the use of technology, processes and controls, there are inherent limitations in such plans and systems, including the possibility that certain risks have not been identified, given the evolving nature of this threat. The Fund relies on third-party service providers for many of its day-to-day operations, and will be subject to the risk that the protections and protocols implemented by those service providers will be ineffective to protect the Fund from cyber-attack. The Adviser does not control the cybersecurity plans and systems put in place by third-party service providers, and such third-party service providers may have limited indemnification obligations to the Adviser or the Fund. Similar types of cybersecurity risks or technical malfunctions also are present for issuers of securities in which the Fund invests, which could result in material adverse consequences for such issuers, and may cause the Fund's investment in such securities to lose value.

Index Construction Risk. A security included in the Index may not exhibit the characteristic or provide the specific exposure for which it was selected and consequently the Fund's holdings may not exhibit returns consistent with that characteristic or exposure.

Index Licensing Risk. It is possible that the license under which the Adviser or the Fund is permitted to replicate or otherwise use the Index will be terminated or may be disputed, impaired or cease to remain in effect. In such a case, the Adviser may be required to replace the Index with another index which it considers to be appropriate in light of the investment strategy of the Fund. The use of any such substitute index may have an adverse impact on the Fund's performance. In the event that the Adviser is unable to identify a suitable replacement for the Index, it may determine to terminate the Fund.

Money Market Risk. An investment in a money market fund is not a deposit of any bank and is not insured or guaranteed by the FDIC or any other government agency. Certain money market funds seek to preserve the value of their shares at $1.00 per share, although there can be no assurance that they will do so, and it is possible to lose money by investing in such a money market fund. A major or unexpected change in interest rates or a decline in the credit quality of an issuer or entity providing credit support, an inactive trading market for money market instruments, or adverse market, economic, industry, political, regulatory, geopolitical, and other conditions could cause the share price of such a money market fund to fall below $1.00. It is possible that such a money market fund will issue and redeem shares at $1.00 per share at times when the fair value of the money market fund's portfolio per share is more or less than $1.00. None of State Street Corporation, State Street Bank and Trust Company (“State Street”), State Street Global Advisors, Inc. (“SSGA”), SSGA FM or their affiliates (“State Street Entities”) guarantee the value of an investment in a money market fund at $1.00 per share. Investors should have no expectation of capital support to a money market fund from State Street Entities. Other money market funds price and transact at a “floating” NAV that will fluctuate along with changes in the market-based value of fund assets. Shares sold utilizing a floating NAV may be worth more or less than their original purchase price. Recent changes in the regulation of money market funds may affect the operations and structures of money market funds. A money market fund may be permitted or required to impose redemption fees or to impose limitations on redemptions during periods of high illiquidity in the markets for the investments held by it.

Portfolio Turnover Risk. The Fund may engage in frequent trading of its portfolio securities. Fund turnover generally involves a number of direct and indirect costs and expenses to the Fund, including, for example, brokerage commissions, dealer mark-ups and bid/asked spreads, and transaction costs on the sale of securities and reinvestment in other securities. The costs related to increased portfolio turnover have the effect of reducing the Fund's investment return, and the sale of securities by the Fund may result in the realization of taxable capital gains, including short-term capital gains. The Fund may engage in significant trading of its portfolio securities in connection with Index rebalancing. Frequent or significant trading may cause the Fund to incur additional transaction costs and experience different tax consequences in comparison to an ETF that does not engage in frequent or significant trading.

Securities Lending Risk. The Fund may lend portfolio securities in an amount not to exceed 40% of the value of its net assets. For these purposes, net assets shall exclude the value of all assets received as collateral for the loan. Such loans may be terminated at any time. Any such loans must be continuously secured by collateral maintained on a current basis in an amount at least equal to the market value of the securities loaned by the Fund, marked to market each trading day. The Fund will receive the amount of all dividends, interest and other distributions on the loaned securities; however, the borrower has the right to vote the loaned securities. The Fund will call loans to vote proxies if a material issue affecting the investment is to be voted upon. Efforts to recall such securities promptly may be unsuccessful, especially for foreign securities or thinly traded securities. 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. Should the borrower of the securities fail financially, the Fund may experience delays in recovering the securities or exercising its rights in the collateral. Loans are made only to borrowers that are deemed by the securities lending agent to be of good financial standing. In a loan transaction, the Fund will also bear the risk of any decline in value of securities provided as collateral or acquired with cash collateral. The Fund will attempt to minimize this risk by limiting the investment of cash collateral to high quality instruments of short maturity either directly on behalf of the lending Fund or through one or more joint accounts or funds, which may include those managed by the Adviser. To the extent the collateral provided or investments made with cash collateral differ from securities included in the Index, such collateral or investments may have a greater risk of loss than the securities included in the Index. In addition, the Fund will be subject to the risk that any income generated by lending its securities or reinvesting cash collateral is lower than any fees the Fund has agreed to pay a borrower. The Adviser will take into account the tax impact to shareholders of substitute payments for dividends when overseeing the Fund's securities lending activity.

Trading Issues. Although Fund Shares are listed for trading on the Exchange and may be listed or traded on U.S. and non-U.S. stock exchanges other than the Exchange, there can be no assurance that an active trading market for the Fund Shares will develop or be maintained. Trading in Fund Shares on the Exchange may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Fund Shares inadvisable. In addition, trading in Fund Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to Exchange “circuit breaker” rules. Similar to the shares of operating companies listed on a stock exchange, Fund Shares may be sold short and are therefore subject to the risk of increased volatility in the trading price of the Fund's shares. While the Fund expects that the ability of Authorized Participants to create and redeem Fund Shares at net asset value should be effective in reducing any such volatility, there is no guarantee that it will eliminate the volatility associated with such short sales. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of the Fund will continue to be met or will remain unchanged or that Fund Shares will trade with any volume, or at all, on any stock exchange.

Management

Investment Adviser

SSGA FM serves as the investment adviser to the Fund and, subject to the oversight of the Board, is responsible for the investment management of the Fund. The Adviser provides an investment management program for the Fund and manages the investment of the Fund's assets. In addition, the Adviser provides administrative, compliance and general management services to the Fund. The Adviser is a wholly-owned subsidiary of State Street Global Advisors, Inc., which itself is a wholly-owned subsidiary of State Street Corporation. The Adviser is registered with the SEC under the Investment Advisers Act of 1940, as amended. The Adviser and certain other affiliates of State Street Corporation make up SSGA. SSGA is one of the world's largest institutional money managers and the investment management arm of State Street Corporation. As of June 30, 2023, the Adviser managed approximately $[ ] billion in assets and SSGA managed approximately $[ ] trillion in assets. The Adviser's principal business address is One Iron Street, Boston, Massachusetts 02210.

For the services provided to the Fund under the Investment Advisory Agreement, for the fiscal year ended June 30, 2023, the Fund paid the Adviser the annual fees based on a percentage of the Fund's average daily net assets as set forth below:

SPDR MSCI USA Gender Diversity ETF

[0.20]

From time to time, the Adviser may waive all or a portion of its management fee. [The Adviser has contractually agreed to waive a portion of its management fee and/or reimburse expenses in an amount equal to any acquired fund fees and expenses (excluding holdings in acquired funds for cash management purposes, if any) for the Fund until October 31, 2024. This waiver and/or reimbursement does not provide for the recoupment by the Adviser of any amounts waived or reimbursed. This waiver and/or reimbursement may not be terminated prior to October 31, 2024 except with the approval of the Board]. The Adviser pays all expenses of the Fund other than the management fee, brokerage expenses, taxes, interest, fees and expenses of the Independent Trustees (including any Trustee's counsel fees), litigation expenses, acquired fund fees and expenses and other extraordinary expenses.

A discussion regarding the Board's consideration of the Investment Advisory Agreement is provided in the Fund's Annual Report to Shareholders for the period ended June 30, 2023.

SSGA FM, as the investment adviser for the Fund, may hire one or more sub-advisers to oversee the day-to-day investment activities of the Fund. The sub-advisers are subject to oversight by the Adviser. The Adviser and SPDR Series Trust (the “Trust”) have received an exemptive order from the SEC that permits the Adviser, with the approval of the Board, including a majority of the Independent Trustees, of the Trust, to retain and amend existing sub-advisory agreements with unaffiliated investment sub-advisers for the Fund without submitting the sub-advisory agreement to a vote of the Fund's shareholders. The Trust will notify shareholders in the event of any change in the identity of such sub-adviser or sub-advisers. The Adviser has ultimate responsibility for the investment performance of the Fund due to its responsibility to oversee each sub-adviser and recommend their hiring, termination and replacement. The Adviser is not required to disclose fees paid to any unaffiliated sub-adviser retained pursuant to the order.

With respect to the SPDR MSCI USA Gender Diversity ETF, the Adviser and certain of its affiliates intend to make contributions to a charitable organization, which is tax-exempt under section 501(c)(3) of the Code, developed to provide financial support to third party charitable organizations which seek to enhance gender equity through educational efforts. Charitable contributions from the Adviser and certain of its affiliates will be benchmarked to the assets under management of the Fund. The charitable organization will seek to make donations to identified charitable organizations that support continuing educational efforts designed to mitigate gender inequality in corporate America, and will aim to engage with other organizations in an effort to increase the amount of philanthropic dollars available for such initiatives. The charitable organization will not participate in, or have any influence on the day-to-day operations of, the Fund or the Adviser's management of the Fund.

Portfolio Managers.
The Adviser manages the Fund using a team of investment professionals. The team approach is used to create an environment that encourages the flow of investment ideas. The portfolio managers within the team work together in a cohesive manner to develop and enhance techniques that drive the investment process for the investment strategy. This approach requires portfolio managers to share a variety of responsibilities, including investment strategy and analysis, while retaining responsibility for the implementation of the strategy within any particular portfolio. The approach also enables the team to draw upon the resources of other groups within SSGA. The portfolio management team is overseen by the SSGA Investment Committee.

The table below identifies the professionals primarily responsible for the day-to-day management of the Fund:

Portfolio Managers	Fund
Amy Cheng, Kathleen Morgan and Amy Scofield	SPDR MSCI USA Gender Diversity ETF

Amy Cheng is a Vice President of SSGA and the Adviser and a Senior Portfolio Manager in the Global Equity Beta Solutions Group. Within this group, she is the strategy leader for alternative asset equities. She is responsible for the management of various domestic, international and emerging market equity index strategies, including listed real estate securities and commodities. Prior to joining the Global Equity Beta Solutions Group in 2008, Ms. Cheng worked in SSGA's Implementation Group, where she performed the day-to-day management of active developed and emerging market equity portfolios. She also worked as an operations associate responsible for funds managed by the active international equities team. Prior to joining SSGA in 2000, Ms. Cheng worked at Mellon Financial. Ms. Cheng earned a Bachelor of Arts in Economics and Political Science from the University of Rochester and a Master of Business Administration from the Carroll School of Management at Boston College. She is a member of the FTSE EPRA/NAREIT Global Real Estate Index Series Americas Regional Advisory Committee.

Kathleen Morgan, CFA, is a Vice President of SSGA and the Adviser and a Senior Portfolio Manager in the Global Equity Beta Solutions Group. In this capacity, Ms. Morgan is responsible for the management of various equity index funds that are benchmarked to both domestic and international strategies. Prior to joining SSGA in 2017, she worked in Equity Product Management at Wellington Management, conducting independent risk oversight and developing investment product marketing strategy. Prior experience also includes index equity portfolio management at BlackRock. Ms. Morgan holds a Bachelor of Arts degree in Economics from Wellesley College and a Master of Business Administration from The Wharton School at the University of Pennsylvania. She has also earned the Chartered Financial Analyst (CFA) designation.

Amy Scofield is a Principal of SSGA and the Adviser and a Portfolio Manager in the Global Equity Beta Solutions Group. She is responsible for the management of various equity index funds, with domestic and international strategies. Ms. Scofield rejoined SSGA in November of 2010, after spending two years at Atlantic Trust Company, a private wealth management firm. In her role at Atlantic Trust Company, she specialized in asset allocation and performance analysis for high net worth clients. Prior to Atlantic Trust Company, Ms. Scofield was a compliance officer at SSGA, where she was responsible for ensuring equity portfolios met specified guidelines. She also worked as an operations associate in SSGA's International Structured Products Group. Ms. Scofield holds a Bachelor of Arts in Economics from Boston College.

Additional information about the portfolio managers' compensation, other accounts managed by the portfolio managers, and the portfolio managers' ownership of the Fund is available in the SAI.

Administrator, Sub-Administrator, Custodian and Transfer Agent. The Adviser serves as Administrator for the Fund. State Street, part of State Street Corporation, is the Sub-Administrator for the Fund and the Custodian for the Fund's assets, and serves as Transfer Agent to the Fund.

Lending Agent. State Street is the securities lending agent for the Trust. For its services, the lending agent would typically receive a portion of the net investment income, if any, earned on the collateral for the securities loaned.

Distributor. State Street Global Advisors Funds Distributors, LLC (“SSGA FD” or the “Distributor”), serves as the Fund's distributor pursuant to the Distribution Agreement between SSGA FD and the Trust. The Distributor will not distribute Fund Shares in less than Creation Units, and it does not maintain a secondary market in Fund Shares. The Distributor may enter into selected dealer agreements with other broker-dealers or other qualified financial institutions for the sale of Creation Units of Fund Shares.

Additional Information. The Board oversees generally the operations of the Fund and the Trust. The Trust enters into contractual arrangements with various parties, including among others the Fund's investment adviser, custodian, transfer agent, and accountants, who provide services to the Fund. Shareholders are not parties to any such contractual arrangements or intended beneficiaries of those contractual arrangements, and those contractual arrangements are not intended to create in any shareholder any right to enforce them directly against the service providers or to seek any remedy under them directly against the service providers.

This Prospectus provides information concerning the Trust and the Fund that you should consider in determining whether to purchase Fund Shares. Neither this Prospectus nor the related SAI is intended, or should be read, to be or give rise to an agreement or contract between the Trust or the Fund and any investor, or to give rise to any rights in any shareholder or other person other than any rights under federal or state law that may not be waived.

Index/Trademark Licenses/Disclaimers

The Index Provider is not affiliated with the Trust, the Adviser, the Fund's Administrator, Sub-Administrator, Custodian, Transfer Agent, SSGA FD or any of their respective affiliates. The Adviser (“Licensee”) has entered into license agreements with the Index Provider pursuant to which the Adviser pays a fee to use the index. The Adviser is sub-licensing rights to the Index to the Fund at no charge.

THE SPDR MSCI USA GENDER DIVERSITY ETF IS NOT SPONSORED, ENDORSED, SOLD OR PROMOTED BY MSCI INC. (“MSCI”), ANY OF ITS AFFILIATES, ANY OF ITS INFORMATION PROVIDERS OR ANY OTHER THIRD PARTY INVOLVED IN, OR RELATED TO, COMPILING, COMPUTING OR CREATING ANY MSCI INDEX (COLLECTIVELY, THE “MSCI PARTIES”).THE MSCI INDICES ARE THE EXCLUSIVE PROPERTY OF MSCI. MSCI AND THE MSCI INDEX NAMES ARE SERVICE MARK(S) OF MSCI OR ITS AFFILIATES AND HAVE BEEN LICENSED FOR USE FOR CERTAIN PURPOSES BY THE LICENSEE. NONE OF THE MSCI PARTIES MAKES ANY

REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED, TO THE ISSUER OR OWNERS OF THE MSCI FUNDS OR ANY OTHER PERSON OR ENTITY REGARDING THE ADVISABILITY OF INVESTING IN FUNDS GENERALLY OR IN THE MSCI FUNDS PARTICULARLY OR THE ABILITY OF ANY MSCI INDEX TO TRACK CORRESPONDING STOCK MARKET PERFORMANCE. MSCI OR ITS AFFILIATES ARE THE LICENSORS OF CERTAIN TRADEMARKS, SERVICE MARKS AND TRADE NAMES AND OF THE MSCI INDICES WHICH ARE DETERMINED, COMPOSED AND CALCULATED BY MSCI WITHOUT REGARD TO THE MSCI FUNDS OR THE ISSUER OR OWNERS OF THE MSCI FUNDS OR ANY OTHER PERSON OR ENTITY. NONE OF THE MSCI PARTIES HAS ANY OBLIGATION TO TAKE THE NEEDS OF THE ISSUER OR OWNERS OF THE MSCI FUNDS OR ANY OTHER PERSON OR ENTITY INTO CONSIDERATION IN DETERMINING, COMPOSING OR CALCULATING THE MSCI INDICES. NONE OF THE MSCI PARTIES IS RESPONSIBLE FOR OR HAS PARTICIPATED IN THE DETERMINATION OF THE TIMING OF, PRICES AT, OR QUANTITIES OF THE MSCI FUNDS TO BE ISSUED OR IN THE DETERMINATION OR CALCULATION OF THE EQUATION BY OR THE CONSIDERATION INTO WHICH THE MSCI FUNDS ARE REDEEMABLE. FURTHER, NONE OF THE MSCI PARTIES HAS ANY OBLIGATION OR LIABILITY TO THE ISSUER OR OWNERS OF THE MSCI FUNDS OR ANY OTHER PERSON OR ENTITY IN CONNECTION WITH THE ADMINISTRATION, MARKETING OR OFFERING OF THE MSCI FUNDS.

ALTHOUGH MSCI SHALL OBTAIN INFORMATION FOR INCLUSION IN OR FOR USE IN THE CALCULATION OF THE MSCI INDICES FROM SOURCES THAT MSCI CONSIDERS RELIABLE, NONE OF THE MSCI PARTIES WARRANTS OR GUARANTEES THE ORIGINALITY, ACCURACY AND/OR THE COMPLETENESS OF ANY MSCI INDEX OR ANY DATA INCLUDED THEREIN. NONE OF THE MSCI PARTIES MAKES ANY WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY THE ISSUER OF THE MSCI FUNDS, OWNERS OF THE FUNDS, OR ANY OTHER PERSON OR ENTITY, FROM THE USE OF ANY MSCI INDEX OR ANY DATA INCLUDED THEREIN. NONE OF THE MSCI PARTIES SHALL HAVE ANY LIABILITY FOR ANY ERRORS, OMISSIONS OR INTERRUPTIONS OF OR IN CONNECTION WITH ANY MSCI INDEX OR ANY DATA INCLUDED THEREIN. FURTHER, NONE OF THE MSCI PARTIES MAKES ANY EXPRESS OR IMPLIED WARRANTIES OF ANY KIND, AND THE MSCI PARTIES HEREBY EXPRESSLY DISCLAIM ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO EACH MSCI INDEX AND ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL ANY OF THE MSCI PARTIES HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL OR ANY OTHER DAMAGES (INCLUDING LOST PROFITS) EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

NO PURCHASER, SELLER OR HOLDER OF THE MSCI FUNDS, OR ANY OTHER PERSON OR ENTITY, SHOULD USE OR REFER TO ANY MSCI TRADE NAME, TRADEMARK OR SERVICE MARK TO SPONSOR, ENDORSE, MARKET OR PROMOTE THESE FUNDS WITHOUT FIRST CONTACTING MSCI TO DETERMINE WHETHER MSCI'S PERMISSION IS REQUIRED. UNDER NO CIRCUMSTANCES MAY ANY PERSON OR ENTITY CLAIM ANY AFFILIATION WITH MSCI WITHOUT THE PRIOR WRITTEN PERMISSION OF MSCI.

Additional Purchase and Sale Information

Fund Shares are listed for secondary trading on the Exchange and individual Fund Shares may only be purchased and sold in the secondary market through a broker-dealer. The secondary markets are closed on weekends and also are generally closed on the following holidays: New Year's Day, Dr. Martin Luther King, Jr. Day, Presidents' Day, Good Friday, Memorial Day (observed), Juneteenth National Independence Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day. The Exchange may close early on the business day before certain holidays and on the day after Thanksgiving Day. Exchange holiday schedules are subject to change without notice. If you buy or sell Fund Shares in the secondary market, you will pay the secondary market price for Fund Shares. In addition, you may incur customary brokerage commissions and charges and may pay some or all of the spread between the bid and the offered price in the secondary market on each leg of a round trip (purchase and sale) transaction.

The trading prices of Fund Shares will fluctuate continuously throughout trading hours based on market supply and demand rather than the Fund's net asset value, which is calculated at the end of each business day. Fund Shares will trade on the Exchange at prices that may be above (i.e., at a premium) or below (i.e., at a discount), to varying degrees, the daily net asset value of Fund Shares. The trading prices of Fund Shares may deviate significantly from the Fund's net asset value during periods of market volatility. Given, however, that Fund Shares can be issued and redeemed daily in Creation Units, the Adviser believes that large discounts and premiums to net asset value should not be sustained over long periods.

The Exchange will disseminate, every fifteen seconds during the regular trading day, an indicative optimized portfolio value (“IOPV”) relating to the Fund. The IOPV calculations are estimates of the value of the Fund's net asset value per Fund Share. Premiums and discounts between the IOPV and the market price may occur. This should not be viewed as a “real-time” update of the net asset value per Fund Share. The IOPV is based on the current market value of the published basket of portfolio securities and/or cash required to be deposited in exchange for a Creation Unit and does not necessarily reflect the precise composition of the Fund's actual portfolio at a particular point in time. Moreover, the IOPV is generally determined by using current market quotations and/or price quotations obtained from broker-dealers and other market intermediaries and valuations based on current market rates. The IOPV may not be calculated in the same manner as the NAV, which (i) is computed only once a day, (ii) unlike the calculation of the IOPV, takes into account Fund expenses, and (iii) may be subject, in accordance with the requirements of the 1940 Act, to fair valuation at different prices than those used in the calculations of the IOPV. The IOPV price is based on quotes and closing prices from the securities' local market converted into U.S. dollars at the current currency rates and may not reflect events that occur subsequent to the local market's close. Therefore, the IOPV may not reflect the best possible valuation of the Fund's current portfolio. Neither the Fund nor the Adviser or any of their affiliates are involved in, or responsible for, the calculation or dissemination of such IOPVs and make no warranty as to their accuracy.

The Fund does not impose any restrictions on the frequency of purchases and redemptions; however, the Fund reserves the right to reject or limit purchases at any time as described in the SAI. When considering that no restriction or policy was necessary, the Board evaluated the risks posed by market timing activities, such as whether frequent purchases and redemptions would interfere with the efficient implementation of the Fund's investment strategy, or whether they would cause the Fund to experience increased transaction costs. The Board considered that, unlike traditional mutual funds, Fund Shares are issued and redeemed only in large quantities of shares known as Creation Units, available only from the Fund directly, and that most trading in the Fund occurs on the Exchange at prevailing market prices and does not involve the Fund directly. Given this structure, the Board determined that it is unlikely that (a) market timing would be attempted by the Fund's shareholders or (b) any attempts to market time the Fund by shareholders would result in negative impact to the Fund or its shareholders.

Distributions

Dividends and Capital Gains. As a Fund shareholder, you are entitled to your share of the Fund's income and net realized gains on its investments. The Fund pays out substantially all of its net earnings to its shareholders as “distributions.”

The Fund may earn income dividends from stocks, interest from debt securities and, if participating, securities lending income. These amounts, net of expenses and taxes (if applicable), are passed along to Fund shareholders as “income dividend distributions.” The Fund will generally realize short-term capital gains or losses whenever it sells or exchanges assets held for one year or less. Net short-term capital gains will generally be treated as ordinary income when distributed to shareholders. The Fund will generally realize long-term capital gains or losses whenever it sells or exchanges assets held for more than one year. Net capital gains (the excess of the Fund's net long-term capital gains over its net short-term capital losses) are distributed to shareholders as “capital gain distributions.”

Income dividend distributions, if any, for the Fund are generally distributed to shareholders quarterly, but may vary significantly from period to period.

Net capital gains for the Fund are distributed at least annually. Dividends may be declared and paid more frequently or at any other time to improve Index tracking or to comply with the distribution requirements of the Code. A portion of each distribution may result in a return of capital. You will be notified regarding the portion of the distribution which represents a return of capital.

Distributions in cash may be reinvested automatically in additional whole Fund Shares only if the broker through whom you purchased Fund Shares makes such option available. Distributions which are reinvested will nevertheless be taxable to the same extent as if such distributions had not been reinvested.

Portfolio Holdings Disclosure

The Fund's portfolio holdings disclosure policy is described in the SAI. In addition, the identities and quantities of the securities held by the Fund are disclosed on the Fund's website.

Additional Tax Information

The following discussion is a summary of some important U.S. federal income tax considerations generally applicable to an investment in the Fund. Your investment in the Fund may have other tax implications. Please consult your tax advisor about federal, state, local, foreign or other tax laws applicable to you. Investors, including non-U.S. investors, may wish to consult the SAI tax section for additional disclosure.

Taxes on Distributions. In general, your distributions are subject to federal income tax when they are paid, whether you take them in cash or reinvest them in the Fund. The income dividends and short-term capital gains distributions you receive from the Fund will be taxed as either ordinary income or qualified dividend income. Subject to certain limitations, dividends that are reported by the Fund as qualified dividend income are taxable to noncorporate shareholders at reduced rates. Any distributions of the Fund's net capital gains are taxable as long-term capital gain regardless of how long you have owned Fund Shares. Long-term capital gains are generally taxed to noncorporate shareholders at reduced rates. Distributions in excess of the Fund's current and accumulated earnings and profits are treated as a tax-free return of capital to the extent of your basis in the Fund's shares, and, in general, as capital gain thereafter.

In general, dividends may be reported by the Fund as qualified dividend income if they are attributable to qualified dividend income received by the Fund, which, in general, includes dividend income from taxable U.S. corporations and certain foreign corporations (i.e., certain foreign corporations incorporated in a possession of the United States or in certain countries with a comprehensive tax treaty with the United States, and certain other foreign corporations if the stock with respect to which the dividend is paid is readily tradable on an established securities market in the United States), provided that the Fund satisfies certain holding period requirements in respect of the stock of such corporations and has not hedged its position in the stock in certain ways. A dividend generally will not be treated as qualified dividend income if the dividend is received with respect to any share of stock held by the Fund for fewer than 61 days during the 121-day period beginning at the date which is 60 days before the date on which such share becomes ex-dividend with respect to such dividend or, in the case of certain preferred stock, for fewer than 91 days during the 181-day period beginning 90 days before such date. These holding period requirements will also apply to your ownership of Fund Shares. Holding periods may be suspended for these purposes for stock that is hedged. Additionally, income derived in connection with the Fund's securities lending activities will not be treated as qualified dividend income.

U.S. individuals with income exceeding specified thresholds are subject to a 3.8% Medicare contribution tax on all or a portion of their “net investment income,” which includes taxable interest, dividends and certain capital gains (generally including capital gain distributions and capital gains realized upon the sale of Fund Shares). This 3.8% tax also applies to all or a portion of the undistributed net investment income of certain shareholders that are estates and trusts.

Certain tax-exempt educational institutions will be subject to a 1.4% tax on net investment income. For these purposes, certain dividends and capital gain distributions, and certain gains from the disposition of Fund Shares (among other categories of income), are generally taken into account in computing a shareholder's net investment income.

If you lend your Fund Shares pursuant to securities lending arrangements you may lose the ability to treat Fund dividends (paid while the Fund Shares are held by the borrower) as qualified dividend income. You should consult your financial intermediary or tax advisor to discuss your particular circumstances.

Distributions paid in January, but declared by the Fund in October, November or December of the previous year, payable to shareholders of record in such a month, may be taxable to you in the calendar year in which they were declared. The Fund will inform you of the amount of your ordinary income dividends, qualified dividend income and capital gain distributions shortly after the close of each calendar year.

A distribution will reduce the Fund's net asset value per Fund Share and may be taxable to you as ordinary income or capital gain even though, from an investment standpoint, the distribution may constitute a return of capital.

Market Discount. Any market discount recognized on a market discount bond is taxable as ordinary income. A market discount bond is a bond acquired in the secondary market at a price below redemption value or below adjusted issue price if the bond was issued with original issue discount. Absent an election by the Fund to include the market discount in income as it accrues, the gain on the Fund's disposition of such an obligation will be treated as ordinary income rather than capital gain to the extent of the accrued market discount. Where the income required to be recognized as a

result of the market discount rules is not matched by a corresponding cash receipt by the Fund, the Fund may be required to borrow money or dispose of securities to enable the Fund to make distributions to its shareholders in order to qualify for treatment as a regulated investment company and eliminate taxes at the Fund level, potentially resulting in additional taxable gain or loss to the Fund.

Derivatives and Other Complex Securities. The Fund may invest in complex securities. These investments may be subject to numerous special and complex rules. These rules could affect whether gains and losses recognized by the Fund are treated as ordinary income or capital gain, accelerate the recognition of income to the Fund and/or defer the Fund's ability to recognize losses. In turn, these rules may affect the amount, timing or character of the income distributed to you by the Fund. You should consult your personal tax advisor regarding the application of these rules.

Foreign Income Taxes. Investment income received by the Fund from sources within foreign countries may be subject to foreign income taxes withheld at the source. The United States has entered into tax treaties with many foreign countries which may entitle the Fund to a reduced rate of such taxes or exemption from taxes on such income. It is impossible to determine the effective rate of foreign tax for the Fund in advance since the amount of the assets to be invested within various countries is not known. If more than 50% of the total assets of the Fund at the close of its taxable year consist of certain foreign stocks or securities, the Fund may elect to “pass through” to you certain foreign income taxes (including withholding taxes) paid by the Fund. If the Fund in which you hold Fund Shares makes such an election, you will be considered to have received as an additional dividend your share of such foreign taxes, but you may be entitled to either a corresponding tax deduction in calculating your taxable income, or, subject to certain limitations, a credit in calculating your federal income tax. No deduction for such taxes will be permitted to individuals in computing their alternative minimum tax liability. If the Fund does not so elect, the Fund will be entitled to claim a deduction for certain foreign taxes incurred by the Fund. Under certain circumstances, if the Fund receives a refund of foreign taxes paid in respect of a prior year, the value of Fund Shares could be affected or any foreign tax credits or deductions passed through to shareholders in respect of the Fund's foreign taxes for the current year could be reduced.

Foreign Currency Transactions. The Fund's transactions in foreign currencies, foreign currency denominated debt obligations and certain foreign currency options, futures contracts and forward contracts (and similar instruments) may give rise to ordinary income or loss to the extent such income or loss results from fluctuations in the value of the foreign currency concerned.

Taxes on Exchange-Listed Share Sales. Any capital gain or loss realized upon a sale of Fund Shares is generally treated as long-term capital gain or loss if Fund Shares have been held for more than one year and as short-term capital gain or loss if Fund Shares have been held for one year or less, except that any capital loss on the sale of Fund Shares held for six months or less is treated as long-term capital loss to the extent that capital gain dividends were paid with respect to the Fund Shares.

Taxes on Creations and Redemptions of Creation Units. A person who exchanges securities for Creation Units generally will recognize a gain or loss. The gain or loss will be equal to the difference between the market value of the Creation Units at the time and the exchanger's aggregate basis in the securities surrendered plus any cash paid for the Creation Units. A person who exchanges Creation Units for securities will generally recognize a gain or loss equal to the difference between the exchanger's basis in the Creation Units and the aggregate market value of the securities and the amount of cash received. The Internal Revenue Service (the “IRS”), however, may assert that a loss realized upon an exchange of securities for Creation Units cannot be deducted currently under the rules governing “wash sales,” or on the basis that there has been no significant change in economic position. Persons exchanging securities should consult their own tax advisor with respect to whether wash sale rules apply and when a loss might be deductible.

Under current federal tax laws, any capital gain or loss realized upon a redemption (or creation) of Creation Units is generally treated as long-term capital gain or loss if the Fund Shares (or securities surrendered) have been held for more than one year and as a short-term capital gain or loss if the Fund Shares (or securities surrendered) have been held for one year or less.

If you create or redeem Creation Units, you will be sent a confirmation statement showing how many Fund Shares you purchased or sold and at what price.

The Trust, on behalf of the Fund, has the right to reject an order for Creation Units if the purchaser (or a group of purchasers) would, upon obtaining the Fund Shares so ordered, own 80% or more of the outstanding shares of the Fund and if, pursuant to Section 351 of the Code, the Fund would have a basis in the securities different from the market value of the securities on the date of deposit. The Trust also has the right to require information necessary to determine beneficial share ownership for purposes of the 80% determination. If the Trust does issue Creation Units to a purchaser (or a group of purchasers) that would, upon obtaining the Fund Shares so ordered, own 80% or more of the outstanding shares of the Fund, the purchaser (or group of purchasers) will not recognize gain or loss upon the exchange of securities for Creation Units.

If the Fund redeems Creation Units in cash, it may bear additional costs and recognize more capital gains than it would if it redeems Creation Units in-kind.

Non-U.S. Investors. Ordinary income dividends paid by the Fund to shareholders who are non-resident aliens or foreign entities will generally be subject to a 30% U.S. withholding tax (other than distributions reported by the Fund as interest-related dividends and short-term capital gain dividends), unless a lower treaty rate applies or unless such income is effectively connected with a U.S. trade or business. In general, the Fund may report interest-related dividends to the extent of its net income derived from U.S. source interest, and the Fund may report short-term capital gain dividends to the extent its net short-term capital gain for the taxable year exceeds its net long-term capital loss. Gains on the sale of Fund Shares and dividends that are, in each case, effectively connected with the conduct of a trade or business within the U.S. will generally be subject to U.S. federal net income taxation at regular income tax rates. Non-U.S. shareholders that own, directly or indirectly, more than 5% of the Fund's shares are urged to consult their own tax advisors concerning special tax rules that may apply to their investment.

Unless certain non-U.S. entities that hold Fund Shares comply with IRS requirements that will generally require them to report information regarding U.S. persons investing in, or holding accounts with, such entities, a 30% withholding tax may apply to distributions payable to such entities. A non-U.S. shareholder may be exempt from the withholding described in this paragraph under an applicable intergovernmental agreement between the U.S. and a foreign government, provided that the shareholder and the applicable foreign government comply with the terms of such agreement.

Backup Withholding. The Fund will be required in certain cases to withhold (as “backup withholding”) on amounts payable to any shareholder who (1) has provided the Fund either an incorrect tax identification number or no number at all, (2) is subject to backup withholding by the IRS for failure to properly report payments of interest or dividends, (3) has failed to certify to the Fund that such shareholder is not subject to backup withholding, or (4) has not certified that such shareholder is a U.S. person (including a U.S. resident alien). The backup withholding rate is currently 24%. Backup withholding will not be applied to payments that have been subject to the 30% withholding tax on shareholders who are neither citizens nor permanent residents of the United States.

Other Tax Issues. The Fund may be subject to tax in certain states where the Fund does business (or is treated as doing business as a result of its investments). Furthermore, in those states which have income tax laws, the tax treatment of the Fund and of Fund shareholders with respect to distributions by the Fund may differ from federal tax treatment.

The foregoing discussion summarizes some of the consequences under current federal income tax law of an investment in the Fund. It is not a substitute for personal tax advice. Consult your personal tax advisor about the potential tax consequences of an investment in the Fund under all applicable tax laws.

General Information

The Trust was organized as a Massachusetts business trust on June 12, 1998. If shareholders of the Fund are required to vote on any matters, shareholders are entitled to one vote for each Fund Share they own. Annual meetings of shareholders will not be held except as required by the 1940 Act and other applicable law. See the SAI for more information concerning the Trust's form of organization.

Management and Organization

The Fund is a separate series of the Trust, which is an open-end registered management investment company.

From time to time, the Fund may advertise yield and total return figures. Yield is a historical measure of dividend income, and total return is a measure of past dividend income (assuming that it has been reinvested) plus capital appreciation. Neither yield nor total return should be used to predict the future performance of the Fund.

Morgan, Lewis & Bockius LLP serves as counsel to the Trust, including the Fund. [ ] serves as the independent registered public accounting firm and will audit the Fund's financial statements annually.

Financial Highlights

These financial highlight tables are intended to help you understand the Fund's financial performance for the past five fiscal years, or, if shorter, the period since the Fund's inception. Certain information reflects the performance results for a single Fund Share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the Fund (assuming reinvestment of all dividends and distributions). This information has been audited by [ ], the Trust's independent registered public accounting firm, whose report, along with the Fund's financial highlights and financial statements, is included in the annual report to shareholders, which is available upon request. Any references to Notes in these financial highlight tables refer to the “Notes to Financial Statements” section of the Fund's financial statements, and the financial information included in these tables should be read in conjunction with the financial statements incorporated by reference in the SAI.

[To be provided by subsequent amendment]

Where to Learn More About the Fund

This Prospectus does not contain all the information included in the Registration Statement filed with the SEC with respect to Fund Shares. An SAI and the annual and semi-annual reports to shareholders, each of which has been or will be filed with the SEC, provide more information about the Fund. The Prospectus and SAI may be supplemented from time to time. In the annual report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during the Fund's last fiscal year, as applicable. The SAI is incorporated herein by reference (i.e., it is legally part of this Prospectus). These materials may be obtained without charge, upon request, by writing to the Distributor, State Street Global Advisors Funds Distributors, LLC, One Iron Street, Boston, Massachusetts 02210, by visiting the Fund's website at https://www.ssga.com/spdrs or by calling the following number:

Investor Information: 1-866-787-2257

The Registration Statement, including this Prospectus, the SAI, and the exhibits as well as any shareholder reports may be reviewed on the EDGAR Database on the SEC's website (http://www.sec.gov). You may also obtain copies of this and other information, after paying a duplicating fee, by electronic request at the following E-mail address: [email protected].

Shareholder inquiries may be directed to the Fund in writing to State Street Global Advisors Funds Distributors, LLC, One Iron Street, Boston, Massachusetts 02210, or by calling the Investor Information number listed above.

No person has been authorized to give any information or to make any representations other than those contained in this Prospectus in connection with the offer of Fund Shares, and, if given or made, the information or representations must not be relied upon as having been authorized by the Trust or the Fund. Neither the delivery of this Prospectus nor any sale of Fund Shares shall under any circumstance imply that the information contained herein is correct as of any date after the date of this Prospectus.

Dealers effecting transactions in Fund Shares, whether or not participating in this distribution, are generally required to deliver a Prospectus. This is in addition to any obligation of dealers to deliver a Prospectus when acting as underwriters.

SPDRSERESGPROThe Trust's Investment Company Act Number is 811-08839.