Fund/Ticker

Fidelity® Total Bond K6 Fund/FTKFX

Summary Prospectus

October 30, 2023

Before you invest, you may want to review the fund's prospectus, which contains more information about the fund and its risks. You can find the fund's prospectus, reports to shareholders, and other information about the fund (including the fund's SAI) online at www.fidelity.com/workplacedocuments. You can also get this information at no cost by calling 1-800-835-5095 or by sending an e-mail request to fidfunddocuments@fidelity.com. The fund's prospectus and SAI dated October 30, 2023 are incorporated herein by reference.

245 Summer Street, Boston, MA 02210

Fund Summary

Fund:

Fidelity® Total Bond K6 Fund

Investment Objective

Fidelity® Total Bond K6 Fund seeks a high level of current income.

Fee Table

The following table describes the fees and expenses that may be incurred 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 brokerage commissions on purchases and sales of the fund.

Shareholder fees

(fees paid directly from your investment)

None

Annual Operating Expenses

(expenses that you pay each year as a % of the value of your investment)

Management fee	0.30%
Distribution and/or Service (12b-1) fees	None
Other expenses	0.00%
Total annual operating expenses	0.30%

This example helps compare the cost of investing in the fund with the cost of investing in other funds.

Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the 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:

1 year	$	31
3 years	$	97
5 years	$	169
10 years	$	381

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 operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 203% of the average value of its portfolio.

Principal Investment Strategies

Normally investing at least 80% of assets in debt securities of all types and repurchase agreements for those securities.
Using the Bloomberg U.S. Universal Bond Index as a guide in allocating assets across the investment-grade, high yield, and emerging markets asset classes. 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.
Investing up to 20% of assets in lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities or junk bonds).
Managing the fund to have similar overall interest rate risk to the Bloomberg U.S. Aggregate Bond Index.
Investing in domestic and foreign issuers.
Allocating assets across different asset classes, market sectors, and maturities.
Analyzing the credit quality of the issuer, the issuer's potential for success, the credit, currency, and economic risks of the security and its issuer, security-specific features, current and potential future valuation, and trading opportunities to select investments.
Engaging in transactions that have a leveraging effect on the fund, including investments in derivatives - such as swaps (interest rate, total return, and credit default), options, and futures contracts - and forward-settling securities, to adjust the fund's risk exposure.
Investing in Fidelity's Central funds (specialized investment vehicles used by Fidelity® funds to invest in particular security types or investment disciplines) consistent with the asset classes discussed above.

Principal Investment Risks

Interest Rate Changes.

Interest rate increases can cause the price of a debt security to decrease.

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.

Foreign exchange rates also can be extremely volatile.

Prepayment.

The ability of an issuer of a debt security to repay principal prior to a security's maturity can cause greater price volatility if interest rates change.

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.

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.

Lower-quality debt securities (those of less than investment-grade quality, also referred to as high yield debt securities or junk bonds) and certain types of other securities involve greater risk of default or price changes due to changes in the credit quality of the issuer.

The value of lower-quality debt securities and certain types of other securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.

Leverage Risk.

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

High Portfolio Turnover.

High portfolio turnover (more than 100%) may result in increased transaction costs and potentially higher capital gains or losses. The effects of higher than normal portfolio turnover may adversely affect the fund's performance.

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.

Unlike individual debt securities, which typically pay principal at maturity, the value of an investment in the fund will fluctuate.

Performance

The following information is intended to help you understand the risks of investing in the fund.

The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The indexes have characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance is not an indication of future performance.

Visit www.401k.com and log in for more recent performance information.

Year-by-Year Returns

						2018	2019	2020	2021	2022
						-0.77%	10.02%	9.53%	-0.10%	-12.56%

During the periods shown in the chart:	Returns	Quarter ended
Highest Quarter Return	6.23%	June 30, 2020
Lowest Quarter Return	-5.71%	June 30, 2022
Year-to-Date Return	0.20%	September 30, 2023

Average Annual Returns

For the periods ended December 31, 2022	Past 1 year	Past 5 years	Life of fund A
Fidelity® Total Bond K6 Fund	-12.56%	0.88%	1.04%
Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)	-13.01%	0.02%	0.28%
Bloomberg U.S. Universal Bond Index (reflects no deduction for fees, expenses, or taxes)	-12.99%	0.18%	0.45%

AFrom May 25, 2017.

Investment Adviser

Fidelity Management & Research Company LLC (FMR) (the Adviser) is the fund's manager. FMR Investment Management (UK) Limited and other investment advisers serve as sub-advisers for the fund.

Portfolio Manager(s)

Michael Foggin (Co-Portfolio Manager) has managed the fund since 2017.

Celso Munoz (Co-Portfolio Manager) has managed the fund since 2017.

Ford O'Neil (Co-Portfolio Manager) has managed the fund since 2017.

Sean Corcoran (Co-Portfolio Manager) has managed the fund since 2022.

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:

Internet

www.401k.com

Phone

For Individual Accounts (investing through a retirement plan sponsor or other institution), refer to your plan materials or contact that institution directly.

For Retirement Plan Level Accounts:

Corporate Clients 1-800-962-1375

"Not for Profit" Clients 1-800-343-0860

Mail

Redemptions:

Fidelity Investments

P.O. Box 770001

Cincinnati, OH 45277-0035

Overnight Express:

Fidelity Investments

100 Crosby Parkway

Covington, KY 41015

TDD - Service for the Deaf and Hearing Impaired

1-800-544-0118

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 of interest by influencing your intermediary and your investment professional to recommend the fund over another investment. Currently, the Board of Trustees of the fund has not authorized such payments for shares of the fund. Ask your investment professional or visit your intermediary's web site for more information.

Fidelity Distributors Company LLC (FDC) is a member of the Securities Investor Protection Corporation (SIPC). You may obtain information about SIPC, including the SIPC brochure, by visiting www.sipc.org or calling SIPC at 202-371-8300.

Fidelity, the Fidelity Investments Logo and all other Fidelity trademarks or service marks used herein are trademarks or service marks of FMR LLC. Any third-party marks that are used herein are trademarks or service marks of their respective owners. © 2023 FMR LLC. All rights reserved.

1.9881220.109

TBDK6-SUM-1023