Summary Prospectus by Investment Company - Form 497K

Fund Summary

Fund/Class:

Fidelity^® Sustainable Target Date 2070 Fund/K6

when you buy, hold, and sell shares of the fund. In addition to the fees and expenses described below, your broker may also require you to pay other fees, such as brokerage commissions on purchases and sales of certain classes of shares of the fund and other fees to financial intermediaries, which are not reflected in the tables and examples below.

effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:

Portfolio Turnover

The fund will not incur transaction costs, such as commissions, when it buys and sells shares of underlying Fidelity^® funds (or "turns over" its portfolio), but it could incur transaction costs if it were to buy and sell other types of securities directly. If the fund were to buy and sell other types of securities directly, a higher portfolio turnover rate could indicate higher transaction costs and could result in higher taxes when fund shares are held in a taxable account. Such costs, if incurred, would not be reflected in annual operating expenses or in the example and would affect the fund's performance.

Principal Investment Strategies

• Investing at least 80% of assets in underlying funds that are (i) Fidelity^® funds that invest in securities of issuers that Fidelity Management & Research Company LLC (FMR) (the Adviser) believes have proven or improving sustainability practices or positive environmental, social and governance (ESG) characteristics (Fidelity^® Sustainable Funds), (ii) Fidelity index funds that track an ESG Index (Fidelity^® Sustainable Index Funds), and (iii) Fidelity^® funds that do not have a principal ESG investment strategy but invest at least 80% of assets in U.S. and international sovereign or government-related debt securities that the Fidelity^®Sustainable Target Date Fund Adviser

believes have positive ESG characteristics (Fidelity^® Traditional Funds) (collectively, underlying Fidelity^® Funds).

• Evaluating each security in which a Fidelity^® Traditional Fund invests to determine whether 80% of assets are invested in sovereign or government-related debt securities whose issuers have positive ESG characteristics by considering the sustainability practices of the country or other issues based on an evaluation of such issuer's individual ESG profile using the Adviser's proprietary ESG ratings process.

• The Adviser's proprietary ESG ratings process evaluates the current state of an issuer's sustainability practices using a data-driven framework that includes both proprietary and third-party data, and also provides a qualitative forward-looking assessment of an issuer's sustainability outlook provided by the Adviser's fundamental research analysts and ESG team.

• Allocating assets according to a neutral asset allocation strategy shown in the glide path below that adjusts over time until it reaches an allocation similar to that of the Fidelity^® Sustainable Target Date Income Fund, approximately 10 to 19 years after the year 2070. The Adviser may modify the fund's neutral asset allocations from time to time when in the interests of shareholders.

asset classes. Such asset classes are not reflected in the neutral asset allocations reflected in the glide path above. Emerging markets include countries that have an emerging stock market as defined by MSCI, countries or markets with low- to middle-income economies as classified by the World Bank, and other countries or markets that the Adviser identifies as having similar emerging markets characteristics.

• Designed for investors who anticipate retiring in or within a few years of 2070 (target retirement date) at or around age 65.

• Fidelity^® Sustainable Funds employ sustainable investing exclusion criteria to avoid investments in issuers that are directly engaged in, and/or derive significant revenue from, certain industries. Please see "Fund Basics - Investment Details - Description of Underlying Fidelity^® Funds" for additional information.

When the neutral asset allocation of a fund matches Fidelity^® Sustainable Target Date Income Fund's neutral asset allocation (approximately 10 to 19 years after the year indicated in the fund's name), the Board of Trustees may combine the fund with Fidelity^® Sustainable Target Date Income Fund, without shareholder approval, and the fund's shareholders will become shareholders of Fidelity^® Sustainable Target Date Income Fund.

Principal Investment Risks

Shareholders should consider that no target date fund is intended as a complete retirement program and there is no guarantee that any single fund will provide sufficient retirement income at or through your retirement. The fund's share price fluctuates, which means you could lose money by investing in the fund, including losses near, at or after the target retirement date.

• Sustainability Risk.

The Adviser's adherence to its ESG ratings process may affect exposure to certain companies, sectors, regions, and countries and may affect performance depending on whether such investments are in or out of favor.

• Asset Allocation Risk.

The fund is subject to risks resulting from the Adviser's asset allocation decisions. The selection of underlying funds and the allocation of the fund's assets among various asset classes could cause the fund to lose value or its results to lag relevant benchmarks or other funds with similar objectives. In addition, the fund's active asset allocation strategy may cause the fund to have a risk profile different than that portrayed above from time to time and may increase losses.

• Investing in Other Funds.

The fund bears all risks of investment strategies employed by the underlying

funds, including the risk that the underlying funds will not meet their investment objectives.

• Stock Market Volatility.

The Adviser will continue to invest the fund's assets in equity funds in the years following the fund's target retirement date in an effort to achieve the fund's overall investment objective. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments.

• Foreign Exposure.

Foreign markets, particularly emerging markets, can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market. The extent of economic development; political stability; market depth, infrastructure, and capitalization; and regulatory oversight can be less than in more developed markets. Emerging markets typically have less established legal, accounting and financial reporting systems than those in more developed markets, which may reduce the scope or quality of financial information available to investors. Emerging markets can be subject to greater social, economic, regulatory, and political uncertainties and can be extremely volatile. Foreign exchange rates also can be extremely volatile.

• Geographic Exposure to China.

Because an underlying fund invests a meaningful portion of its assets in China, the underlying fund's performance is expected to be closely tied to social, political, and economic conditions in China and to be more volatile than the performance of more geographically diversified funds. The fund may obtain exposure to companies based or operated in China by investing through legal structures known as variable interest entities (VIEs). Instead of directly owning the equity securities of a Chinese company, a VIE enters into service and other contracts with the Chinese company. Although the VIE has no equity ownership of the Chinese company, the contractual arrangements permit the VIE to consolidate the Chinese company into its financial statements. Intervention by the Chinese government with respect to VIEs could significantly affect the Chinese company's performance and the enforceability of the VIE's contractual arrangements with the Chinese company.

• Industry Exposure.

Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single industry or group of related industries.

• Geographic Exposure to Europe.

Because an underlying fund invests a meaningful portion of its assets in Europe, the underlying fund's performance is expected to be closely

tied to social, political, and economic conditions within Europe and to be more volatile than the performance of more geographically diversified funds.

• Issuer-Specific Changes.

The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole. Changes in the financial condition of an issuer or counterparty (e.g., broker-dealer or other borrower in a securities lending transaction) can increase the risk of default by an issuer or counterparty, which can affect a security's or instrument's value or result in delays in recovering securities and/or capital from a counterparty. A decline in the credit quality of an issuer or a provider of credit support or a maturity-shortening structure for a security can cause the price of a security to decrease.

• Leverage Risk.

Leverage can increase market exposure, magnify investment risks, and cause losses to be realized more quickly.

• Quantitative Investing.

Securities selected using quantitative analysis can perform differently from the market as a whole as a result of the factors used in the analysis, the weight placed on each factor, and changes in the factors' historical trends.

An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit

Insurance Corporation or any other government agency. You could lose money by investing in the fund.

Performance

Performance history will be available for the fund after the fund has been in operation for one calendar year.

Investment Adviser

FMR (the Adviser) is the fund's manager.

Portfolio Manager(s)

Finola McGuire Foley (Co-Portfolio Manager) has managed the fund since 2024.

Bruno Weinberg Crocco (Co-Portfolio Manager) has managed the fund since 2024.

Andrew Dierdorf (Co-Portfolio Manager) has managed the fund since 2024.

Brett Sumsion (Co-Portfolio Manager) has managed the fund since 2024.

Purchase and Sale of Shares

Shares generally are available only to certain employer-sponsored retirement plans. For this purpose, employer-sponsored retirement plans generally include profit sharing, 401(k), 403(b), 457(b), defined benefit, retiree health savings plans, and similar plans, but generally do not include: retail retirement or non-retirement accounts; Individual Retirement

Accounts (IRAs) (such as traditional, Roth, SEP, SARSEP, and SIMPLE IRAs); Coverdell Education Savings Accounts; individual 403(b) accounts that are not part of an employer's 403(b) plan; plans investing through the Fidelity Advisor^® 403(b) program; plans covering self-employed individuals and their employees (formerly Keogh/H.R. 10 plans); health savings accounts; or qualified tuition programs. Plan participants may purchase shares only if shares are eligible for sale and available through their plan. You may buy or sell shares in various ways:

Shares of the fund are not eligible for purchase by registered investment companies or business development companies to the extent such

acquisition is in reliance on Rule 12d1-4 under the Investment Company Act of 1940.

The price to buy one share is its net asset value per share (NAV). Shares will be bought at the NAV next calculated after an order is received in proper form.

The price to sell one share is its NAV. Shares will be sold at the NAV next calculated after an order is received in proper form.

The fund is open for business each day the New York Stock Exchange (NYSE) is open.

There is no purchase minimum for fund shares.

Tax Information

Distributions by the fund to tax-advantaged retirement plan accounts are not taxable currently (but you may be taxed later, upon withdrawal of your investment from such account).

Payments to Broker-Dealers and Other Financial Intermediaries

The fund, the Adviser, Fidelity Distributors Company LLC (FDC), and/or their affiliates may pay intermediaries, which may include banks, broker-dealers, retirement plan sponsors, administrators, or service-providers (who may be affiliated with the Adviser or FDC), for the sale of fund shares and related services. These payments may create a conflict