FIDELITY SALEM STREET TRUST Form N-CSRS Filed 2024-11-21

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-02105

Fidelity Salem Street Trust

(Exact name of registrant as specified in charter)

245 Summer St., Boston, MA 02210

(Address of principal executive offices) (Zip code)

Nicole Macarchuk, Secretary

245 Summer St.

Boston, Massachusetts 02210

(Name and address of agent for service)

Registrant's telephone number, including area code:

617-563-7000


Date of fiscal year end:	March 31

Date of reporting period:	September 30, 2024

Item 1.

Reports to Stockholders


	SEMI-ANNUAL SHAREHOLDER REPORT \| AS OF SEPTEMBER 30, 2024
	Fidelity® SAI Municipal Money Market Fund Fidelity® SAI Municipal Money Market Fund : FMQXX

This semi-annual shareholder report contains information about Fidelity® SAI Municipal Money Market Fund for the period April 1, 2024 to September 30, 2024. You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.

What were your Fund costs for the last six months?

(based on hypothetical $10,000 investment)

	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Fidelity® SAI Municipal Money Market Fund	$ 4	0.07%

Key Fund Statistics

(as of September 30, 2024)

KEY FACTS
Fund Size	$43,124,869
Number of Holdings	1

What did the Fund invest in?
(as of September 30, 2024)

EFFECTIVE MATURITY DIVERSIFICATION (% of Fund's net assets)
Days
1-7	99.7

ASSET ALLOCATION (% of Fund's net assets)

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. © 2024 FMR LLC. All rights reserved.
		For additional information about the Fund; including its prospectus, financial information, holdings and proxy information, scan the QR code or visit fundresearch.fidelity.com/prospectus/sec 1.9914774.100 3062-TSRS-1124

Item 2.

Code of Ethics

Not applicable.

Item 3.

Audit Committee Financial Expert

Not applicable.

Item 4.

Principal Accountant Fees and Services

Not applicable.

Item 5.

Audit Committee of Listed Registrants

Not applicable.

Item 6.

Investments

(a)

Not applicable.

(b)

Not applicable

Item 7.

Financial Statements and Financial Highlights for Open-End Management Investment Companies

Fidelity® SAI Municipal Money Market Fund

Semi-Annual Report

September 30, 2024

Offered exclusively to certain clients of the Adviser, or its affiliates, including Strategic Advisers LLC (Strategic Advisers) - not available for sale to the general public. Fidelity® SAI is a product name of Fidelity® funds dedicated to certain programs affiliated with Strategic Advisers.

Contents

Item 7: Financial Statements and Financial Highlights for Open-End Management Investment Companies (Semi-Annual Report)

Fidelity® SAI Municipal Money Market Fund

Notes to Financial Statements

Item 8: Changes in and Disagreements with Accountants for Open-End Management Investment Companies

Item 9: Proxy Disclosures for Open-End Management Investment Companies

Item 10: Remuneration Paid to Directors, Officers, and others of Open-End Management Investment Companies

Item 11: Statement Regarding Basis for Approval of Investment Advisory Contract

To view a fund's proxy voting guidelines and proxy voting record for the 12-month period ended June 30, visit http://www.fidelity.com/proxyvotingresults or visit the Securities and Exchange Commission's (SEC) web site at http://www.sec.gov.

You may also call 1-800-544-3455 to request a free copy of the proxy voting guidelines.

Standard & Poor's, S&P and S&P 500 are registered service marks of The McGraw-Hill Companies, Inc. and have been licensed for use by Fidelity Distributors Corporation.

Other third-party marks appearing herein are the property of their respective owners.

This report and the financial statements contained herein are submitted for the general information of the shareholders of the Fund. This report is not authorized for distribution to prospective investors in the Fund unless preceded or accompanied by an effective prospectus.

A fund files its complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT. Forms N-PORT are available on the SEC's web site at http://www.sec.gov. A fund's Forms N-PORT may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information regarding the operation of the SEC's Public Reference Room may be obtained by calling 1-800-SEC-0330.

For a complete list of a fund's portfolio holdings, view the most recent holdings listing, semiannual report, or annual report on Fidelity's web site at http://www.fidelity.com, http://www.institutional.fidelity.com, or http://www.401k.com, as applicable.

NOT FDIC INSURED •MAY LOSE VALUE •NO BANK GUARANTEE

Neither the Fund nor Fidelity Distributors Corporation is a bank.

Item 7: Financial Statements and Financial Highlights for Open-End Management Investment Companies (Semi-Annual Report)

Fidelity® SAI Municipal Money Market Fund

Schedule of Investments September 30, 2024 (Unaudited)

Showing Percentage of Net Assets

Investment Company - 99.7%
	Shares	Value ($)
Fidelity Municipal Cash Central Fund 3.50% (a)(b) (Cost $43,011,203)	43,002,247	43,010,848

TOTAL INVESTMENT IN SECURITIES - 99.7% (Cost $43,011,203)	43,010,848
NET OTHER ASSETS (LIABILITIES) - 0.3%	114,021
NET ASSETS - 100.0%	43,124,869

The date shown for securities represents the date when principal payments must be paid, taking into account any call options exercised by the issuer and any permissible maturity shortening features other than interest rate resets.

Legend

(a)	Information in this report regarding holdings by state and security types does not reflect the holdings of the Fidelity Municipal Cash Central Fund.

(b)

Affiliated fund that is generally available only to investment companies and other accounts managed by Fidelity Investments. The rate quoted is the annualized seven-day yield of the fund at period end. A complete unaudited listing of the fund's holdings as of its most recent quarter end is available upon request. In addition, each Fidelity Central Fund's financial statements are available on the SEC's website or upon request.

Affiliated Central Funds

Fiscal year to date information regarding the Fund's investments in Fidelity Central Funds, including the ownership percentage, is presented below.

Affiliate	Value, beginning of period ($)	Purchases ($)	Sales Proceeds ($)	Dividend Income ($)	Realized Gain (loss) ($)	Change in Unrealized appreciation (depreciation) ($)	Value, end of period ($)	% ownership, end of period
Fidelity Municipal Cash Central Fund 3.50%	3,543,196	40,768,312	1,300,000	510,474	-	(660)	43,010,848	1.7%
Total	3,543,196	40,768,312	1,300,000	510,474	-	(660)	43,010,848

Amounts in the dividend income column in the above table include any capital gain distributions from underlying funds, which are presented in the corresponding line item in the Statement of Operations, if applicable.

Amounts included in the purchases and sales proceeds columns may include in-kind transactions, if applicable.

Investment Valuation

The following is a summary of the inputs used, as of September 30, 2024, involving the Fund's assets and liabilities carried at fair value. The inputs or methodology used for valuing securities may not be an indication of the risk associated with investing in those securities. For more information on valuation inputs, and their aggregation into the levels used below, please refer to the Investment Valuation section in the accompanying Notes to Financial Statements.

Valuation Inputs at Reporting Date:
Description	Total ($)	Level 1 ($)	Level 2 ($)	Level 3 ($)
Investments in Securities:

Investment Company	43,010,848	43,010,848	-	-

Total Investments in Securities:	43,010,848	43,010,848	-	-

Financial Statements (Unaudited)

Statement of Assets and Liabilities
As of September 30, 2024 (Unaudited)
Assets
Investment in securities, at value - See accompanying schedule:
Fidelity Central Funds (cost $43,011,203)	$	43,010,848


Total Investment in Securities (cost $43,011,203)			$	43,010,848
Cash				6,690
Distributions receivable from Fidelity Central Funds				125,707
Prepaid expenses				55
Receivable from investment adviser for expense reductions				5,924
Total assets				43,149,224
Liabilities
Accrued management fee	$	5,005
Audit fee payable		18,997
Custody fee payable		350
Other payables and accrued expenses		3
Total liabilities				24,355
Net Assets			$	43,124,869
Net Assets consist of:
Paid in capital			$	43,151,986
Total accumulated earnings (loss)				(27,117)
Net Assets			$	43,124,869
Net Asset Value, offering price and redemption price per share ($43,124,869 ÷ 43,117,033 shares)			$	1.0002

Statement of Operations
Six months ended September 30, 2024 (Unaudited)
Investment Income
Interest			$	246,793
Income from Fidelity Central Funds				510,474
Total income				757,267
Expenses
Management fee	$	29,906
Custodian fees and expenses		460
Independent trustees' fees and expenses		57
Registration fees		6,795
Audit fees		20,654
Legal		10
Miscellaneous		118
Total expenses before reductions		58,000
Expense reductions		(42,949)
Total expenses after reductions				15,051
Net Investment income (loss)				742,216
Realized and Unrealized Gain (Loss)
Net realized gain (loss) on:
Investment Securities:
Unaffiliated issuers		(1,570)
Total net realized gain (loss)				(1,570)
Change in net unrealized appreciation (depreciation) on:
Investment Securities:
Unaffiliated issuers		(327)
Fidelity Central Funds		(660)
Total change in net unrealized appreciation (depreciation)				(987)
Net gain (loss)				(2,557)
Net increase in net assets resulting from operations			$	739,659

Statement of Changes in Net Assets

		Six months ended September 30, 2024 (Unaudited)		Year ended March 31, 2024
Increase (Decrease) in Net Assets
Operations
Net investment income (loss)	$	742,216	$	3,620,801
Net realized gain (loss)		(1,570)		195
Change in net unrealized appreciation (depreciation)		(987)		(26,965)
Net increase in net assets resulting from operations		739,659		3,594,031
Distributions to shareholders		(742,423)		(3,619,585)

Share transactions
Proceeds from sales of shares		-		12,384,099
Reinvestment of distributions		742,083		3,619,585
Cost of shares redeemed		(1,968,128)		(132,108,751)

Net increase (decrease) in net assets and shares resulting from share transactions		(1,226,045)		(116,105,067)
Total increase (decrease) in net assets		(1,228,809)		(116,130,621)

Net Assets
Beginning of period		44,353,678		160,484,299
End of period	$	43,124,869	$	44,353,678

Other Information
Shares
Sold		-		12,380,540
Issued in reinvestment of distributions		741,934		3,618,521
Redeemed		(1,967,734)		(132,071,921)
Net increase (decrease)		(1,225,800)		(116,072,860)

Financial Highlights

Fidelity® SAI Municipal Money Market Fund

		Six months ended (Unaudited) September 30, 2024		Years ended March 31, 2024		2023		2022		2021		2020
Selected Per-Share Data
Net asset value, beginning of period	$	1.0002	$	1.0004	$	1.0000	$	1.0004	$	1.0002	$	1.0001
Income from Investment Operations
Net investment income (loss) A		.0174		.0346		.0180		.0003		.0013		.0142
Net realized and unrealized gain (loss)		- B		(.0002)		.0004		(.0003)		.0002		.0001
Total from investment operations		.0174		.0344		.0184		-		.0015		.0143
Distributions from net investment income		(.0174)		(.0346)		(.0180)		(.0003)		(.0013)		(.0142)
Distributions from net realized gain		-		-		-		(.0001)		(.0001)		-
Total distributions		(.0174)		(.0346)		(.0180)		(.0004)		(.0013) C		(.0142)
Net asset value, end of period	$	1.0002	$	1.0002	$	1.0004	$	1.0000	$	1.0004	$	1.0002
Total Return D,E		1.77 %		3.47%		1.85%		-%		.15%		1.44%
Ratios to Average Net Assets A,F,G
Expenses before reductions		.27% H		.20%		.16%		.16%		.16%		.19%
Expenses net of fee waivers, if any		.07 % H		.14%		.14%		.09%		.12%		.14%
Expenses net of all reductions		.07% H		.14%		.14%		.09%		.12%		.14%
Net investment income (loss)		3.47% H		3.43%		1.57%		.03%		.08%		1.41%
Supplemental Data
Net assets, end of period (000 omitted)	$	43,125	$	44,354	$	160,484	$	537,411	$	445,828	$	134,798

ANet investment income (loss) is affected by the timing of the declaration of dividends by any underlying mutual funds or exchange-traded funds (ETFs). Net investment income (loss) of any mutual funds or ETFs is not included in the Fund's net investment income (loss) ratio.

BAmount represents less than $.00005 per share.

CTotal distributions per share do not sum due to rounding.

DTotal returns for periods of less than one year are not annualized.

ETotal returns would have been lower if certain expenses had not been reduced during the applicable periods shown.

FFees and expenses of any underlying mutual funds or exchange-traded funds (ETFs) are not included in the Fund's expense ratio. The Fund indirectly bears its proportionate share of these expenses. For additional expense information related to investments in Fidelity Central Funds, please refer to the "Investments in Fidelity Central Funds" note found in the Notes to Financial Statements section of the most recent Annual or Semi-Annual report.

GExpense ratios reflect operating expenses of the class. Expenses before reductions do not reflect amounts reimbursed, waived, or reduced through arrangements with the investment adviser, brokerage services, or other offset arrangements, if applicable, and do not represent the amount paid by the class during periods when reimbursements, waivers or reductions occur.

HAnnualized.

Notes to Financial Statements

(Unaudited)

For the period ended September 30, 2024

1. Organization.

Fidelity SAI Municipal Money Market Fund (the Fund) is a fund of Fidelity Salem Street Trust (the Trust) and is authorized to issue an unlimited number of shares. Shares are offered exclusively to certain clients of Fidelity Management & Research Company LLC (FMR) or its affiliates. The Trust is registered under the Investment Company Act of 1940, as amended (the 1940 Act), as an open-end management investment company organized as a Massachusetts business trust. The Fund has been designated an institutional money market fund, and the value of the Fund's shares are calculated to four decimal places that fluctuates based upon changes in the value of the Fund's investments.

2. Investments in Fidelity Central Funds.

Funds may invest in Fidelity Central Funds, which are open-end investment companies generally available only to other investment companies and accounts managed by the investment adviser and its affiliates. The Schedule of Investments lists any Fidelity Central Funds held as an investment as of period end, but does not include the underlying holdings of each Fidelity Central Fund. An investing fund indirectly bears its proportionate share of the expenses of the underlying Fidelity Central Funds.

Based on its investment objective, each Fidelity Central Fund may invest or participate in various investment vehicles or strategies that are similar to those of the investing fund. These strategies are consistent with the investment objectives of the investing fund and may involve certain economic risks which may cause a decline in value of each of the Fidelity Central Funds and thus a decline in the value of the investing fund.

Fidelity Central Fund	Investment Manager	Investment Objective	Investment Practices	Expense RatioA
Fidelity Money Market Central Funds	Fidelity Management & Research Company LLC (FMR)	Each fund seeks to obtain a high level of current income consistent with the preservation of capital and liquidity.	Short-term Investments	Less than .005%

A Expenses expressed as a percentage of average net assets and are as of each underlying Central Fund's most recent annual or semi-annual shareholder report.

A complete unaudited list of holdings for each Fidelity Central Fund is available upon request or at the Securities and Exchange Commission website at www.sec.gov. In addition, the financial statements of the Fidelity Central Funds which contain the significant accounting policies (including investment valuation policies) of those funds, and are not covered by the Report of Independent Registered Public Accounting Firm, are available on the Securities and Exchange Commission website or upon request.

3. Significant Accounting Policies.

The Fund is an investment company and applies the accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP), which require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from those estimates. Subsequent events, if any, through the date that the financial statements were issued have been evaluated in the preparation of the financial statements. The Fund's Schedule of Investments lists any underlying mutual funds or exchange-traded funds (ETFs) but does not include the underlying holdings of these funds. The following summarizes the significant accounting policies of the Fund:

Investment Valuation. Investments are valued as of 4:00 p.m. Eastern time on the last calendar day of the period.

The Fund categorizes the inputs to valuation techniques used to value its investments into a disclosure hierarchy consisting of three levels as shown below:

Level 1 - unadjusted quoted prices in active markets for identical investments

Level 2 - other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, etc.)

Level 3 - unobservable inputs (including the Fund's own assumptions based on the best information available)

Valuation techniques used to value the Fund's investments by major category are as follows:

Investments in open-end mutual funds, including the Fidelity Central Funds, are valued at their closing net asset value (NAV) each business day and are categorized as Level 1 in the hierarchy.

The aggregate value of investments by input level as of September 30, 2024 is included at the end of the Fund's Schedule of Investments.

Investment Transactions and Income. The net asset value per share for processing shareholder transactions is calculated as of the close of business of the New York Stock Exchange (NYSE), normally 4:00 p.m. Eastern time. Security transactions, including the Fund's investment activity in the Fidelity Central Funds, are accounted for as of trade date. Gains and losses on securities sold are determined on the basis of identified cost. Income and capital gain distributions from Fidelity Central Funds, if any, are recorded on the ex-dividend date. Interest income is accrued as earned and includes coupon interest and amortization of premium and accretion of discount on debt securities as applicable.

Expenses. Expenses directly attributable to a fund are charged to that fund. Expenses attributable to more than one fund are allocated among the respective funds on the basis of relative net assets or other appropriate methods. Expenses included in the accompanying financial statements reflect the expenses of that fund and do not include any expenses associated with any underlying mutual funds or exchange-traded funds. Although not included in a fund's expenses, a fund indirectly bears its proportionate share of these expenses through the net asset value of each underlying mutual fund or exchange-traded fund. Expense estimates are accrued in the period to which they relate and adjustments are made when actual amounts are known.

Income Tax Information and Distributions to Shareholders. Each year, the Fund intends to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code, including distributing substantially all of its taxable income and realized gains. As a result, no provision for U.S. Federal income taxes is required. The Fund files a U.S. federal tax return, in addition to state and local tax returns as required. The Fund's federal income tax returns are subject to examination by the Internal Revenue Service (IRS) for a period of three fiscal years after they are filed. State and local tax returns may be subject to examination for an additional fiscal year depending on the jurisdiction.

Distributions are declared and recorded daily and paid monthly from net investment income. Distributions from realized gains, if any, are declared and recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from GAAP.

Capital accounts within the financial statements are adjusted for permanent book-tax differences. These adjustments have no impact on net assets or the results of operations. Capital accounts are not adjusted for temporary book-tax differences which will reverse in a subsequent period.

Book-tax differences are primarily due to capital loss carryforwards.

The Fund purchases municipal securities whose interest, in the opinion of the issuer, is free from federal income tax. There is no assurance that the IRS will agree with this opinion. In the event the IRS determines that the issuer does not comply with relevant tax requirements, interest payments from a security could become federally taxable, possibly retroactively to the date the security was issued.

As of period end, the cost and unrealized appreciation (depreciation) in securities for federal income tax purposes were as follows:

Gross unrealized appreciation	$149
Gross unrealized depreciation	(504)
Net unrealized appreciation (depreciation)	$(355)
Tax cost	$43,011,203

Capital loss carryforwards are only available to offset future capital gains of the Fund to the extent provided by regulations and may be limited. The capital loss carryforward information presented below, including any applicable limitation, is estimated as of prior fiscal period end and is subject to adjustment.

Short-term

$(25,462)

New Rule Issuance. In July 2023, the Securities and Exchange Commission issued a Final Rule relative to Money Market Reform. Among other things, the Final Rule includes amendments for: (1) Removal of redemption gates except for liquidations; (2) Required liquidity fees for institutional prime and institutional tax-exempt money market funds; (3) Discretionary liquidity fees for non-government money market funds; (4) Higher liquidity requirements; and (5) Changes to reporting requirements for Form N-MFP and Form N-CR. The Final Rule imposes different implementation dates for the amendments through October 2, 2024. The amendments have been implemented to date, and management has concluded that there are no material impacts to the Fund's financial statements and related disclosures.

4. Fees and Other Transactions with Affiliates.

Management Fee. Fidelity Management & Research Company LLC (the investment adviser) and its affiliates provide the Fund with investment management related services for which the Fund pays a monthly management fee that is based on an annual rate of .14% of the Fund's average net assets.

Interfund Trades. Funds may purchase from or sell securities to other Fidelity Funds under procedures adopted by the Board. The procedures have been designed to ensure these interfund trades are executed in accordance with Rule 17a-7 of the 1940 Act. Interfund trades during the period are noted in the table below.

	Purchases ($)	Sales ($)	Realized Gain (Loss) ($)
Fidelity SAI Municipal Money Market Fund	-	33,955,181	(31)

5. Expense Reductions.

The investment adviser contractually agreed to reimburse the Fund to the extent annual operating expenses exceeded .07% of average net assets (.14% of average net assets prior to April 1, 2024). This reimbursement will remain in place through July 31, 2025. Some expenses, for example the compensation of the independent Trustees, and certain miscellaneous expenses such as proxy and shareholder meeting expenses, are excluded from this reimbursement. During the period this reimbursement reduced the Fund's expenses by $42,949.

6. Other.

A fund's organizational documents provide former and current trustees and officers with a limited indemnification against liabilities arising in connection with the performance of their duties to the fund. In the normal course of business, a fund may also enter into contracts that provide general indemnifications. A fund's maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against a fund. The risk of material loss from such claims is considered remote.

At the end of the period, the following mutual funds managed by the investment adviser or its affiliates were the owners of record of 10% or more of the total outstanding shares.

	Strategic Advisers Tax-Sensitive Short Duration Fund
Fidelity SAI Municipal Money Market Fund	99%

Mutual funds managed by the investment adviser or its affiliates, in aggregate, were the owners of record of more than 20% of the total outstanding shares.

Fund	% of shares held
Fidelity SAI Municipal Money Market Fund	100%

7. Risk and Uncertainties.

Many factors affect a fund's performance. Developments that disrupt global economies and financial markets, such as pandemics, epidemics, outbreaks of infectious diseases, war, terrorism, and environmental disasters, may significantly affect a fund's investment performance. The effects of these developments to a fund will be impacted by the types of securities in which a fund invests, the financial condition, industry, economic sector, and geographic location of an issuer, and a fund's level of investment in the securities of that issuer. Significant concentrations in security types, issuers, industries, sectors, and geographic locations may magnify the factors that affect a fund's performance.

Item 8: Changes in and Disagreements with Accountants for Open-End Management Investment Companies

(Unaudited)

Note: This is not applicable for any fund included in this document.

Item 9: Proxy Disclosures for Open-End Management Investment Companies

(Unaudited)

Note: This is not applicable for any fund included in this document.

Item 10: Remuneration Paid to Directors, Officers, and others of Open-End Management Investment Companies

(Unaudited)

Note: This information is disclosed as part of the financial statements for each Fund as part of Item 7: Financial Statements and Financial Highlights for Open-End Management Investment companies.

Item 11: Statement Regarding Basis for Approval of Investment Advisory Contract

(Unaudited)

Board Approval of Investment Advisory Contracts and Management Fees

Fidelity SAI Municipal Money Market Fund

Each year, the Board of Trustees, including the Independent Trustees (together, the Board), considers the renewal of the fund's management contract with Fidelity Management & Research Company LLC (FMR) and the sub-advisory agreements (together, the Advisory Contracts) for the fund. FMR and the sub-advisers are referred to herein as the Investment Advisers. The Board, assisted by the advice of fund counsel and Independent Trustees' counsel, requests and considers a broad range of information relevant to the renewal of the Advisory Contracts throughout the year.

The Board meets regularly and, at each of its meetings, covers an extensive agenda of topics and materials and considers factors that are relevant to its annual consideration of the renewal of the fund's Advisory Contracts, including the services and support provided to the fund and its shareholders. The Board's Operations Committee, of which all the Independent Trustees are members, meets regularly throughout the year and requests, receives and considers, among other matters, information related to the annual consideration of the renewal of the fund's Advisory Contracts before making its recommendation to the Board. The Board also meets as needed to review matters specifically related to the Board's annual consideration of the renewal of the Advisory Contracts. Members of the Board may also meet from time to time with trustees of other Fidelity funds through joint ad hoc committees to discuss certain matters relevant to all of the Fidelity funds.

At its September 2024 meeting, the Board unanimously determined to renew the fund's Advisory Contracts. In reaching its determination, the Board considered all factors it believed relevant, including (i) the nature, extent, and quality of the services provided to the fund and its shareholders (including the investment performance of the fund); (ii) the competitiveness relative to peer funds of the fund's management fee and total expense ratio; (iii) the total costs of the services provided by and the profits realized by FMR and its affiliates (Fidelity) from its relationships with the fund; and (iv) the extent to which, if any, economies of scale exist and are realized as the fund grows, and whether any economies of scale are appropriately shared with fund shareholders. The Board also considered the broad range of investment choices available to shareholders from FMR's competitors and that the fund's shareholders have chosen to invest in the fund, which is part of the Fidelity family of funds. The Board's decision to renew the Advisory Contracts was not based on any single factor and the factors may have been weighed differently by different Trustees.

The Board reached a determination, with the assistance of fund counsel and Independent Trustees' counsel and through the exercise of its business judgment, that the renewal of the Advisory Contracts was in the best interests of the fund and its shareholders and that the compensation payable under the Advisory Contracts was fair and reasonable in light of all of the surrounding circumstances.

Nature, Extent, and Quality of Services Provided. The Board considered the Investment Advisers' staffing as it relates to the fund, including the backgrounds and experience of investment personnel, and also considered the Investment Advisers' implementation of the fund's investment program. The Independent Trustees also had discussions with senior management of Fidelity's investment operations and investment groups. The Board considered the structure of the investment personnel compensation program and whether this structure provides appropriate incentives to act in the best interests of the fund. Additionally, the Board considered the portfolio managers' investments, if any, in the funds that they manage.

Resources Dedicated to Investment Management and Support Services. The Board reviewed the general qualifications and capabilities of Fidelity's investment staff, including its size, education, experience, and resources, as well as Fidelity's approach to recruiting, managing, training, and compensating investment personnel. The Board noted the resources devoted to Fidelity's global investment organization, and that Fidelity's analysts have extensive resources, tools and capabilities that allow them to conduct quantitative and fundamental analysis, as well as credit analysis of issuers, counterparties and guarantors. Further, the Board considered that Fidelity's investment professionals have sufficient access to global information and data so as to provide competitive investment results over time, and that those professionals also have access to sophisticated tools that permit them to assess portfolio construction and risk and performance attribution characteristics continuously, as well as to transmit new information and research conclusions rapidly around the world. Additionally, in its deliberations, the Board considered Fidelity's trading, risk management, compliance, cybersecurity, and technology and operations capabilities and resources, which are integral parts of the investment management process.

Shareholder and Administrative Services. The Board considered (i) the nature, extent, quality, and cost of advisory, administrative, and shareholder services performed by the Investment Advisers and their affiliates under the Advisory Contracts and under separate agreements covering transfer agency and pricing and bookkeeping services for the fund; (ii) the nature and extent of Fidelity's supervision of third party service providers, principally custodians, subcustodians, and pricing vendors; and (iii) the resources devoted by Fidelity to, and the record of compliance with, the fund's compliance policies and procedures, including with respect to liquidity risk management.

The Board noted that the growth of fund assets over time across the complex allows Fidelity to reinvest in the development of services designed to enhance the value and convenience of the Fidelity funds as investment vehicles. These services include 24-hour access to account information and market information over the Internet and through telephone representatives, investor education materials and asset allocation tools. The Board also considered that it reviews customer service metrics such as telephone response times, continuity of services on the website and metrics addressing services at Fidelity Investor Centers.

Investment in a Large Fund Family. The Board considered the benefits to shareholders of investing in a fund that is part of a large family of funds offering a variety of investment disciplines and providing a large variety of fund investor services. The Board noted that Fidelity had taken, or had made recommendations to the Board that resulted in the Fidelity funds taking, a number of actions over the previous year that benefited particular funds and/or the Fidelity funds in general.

Investment Performance. The Board took into account discussions with representatives of the Investment Advisers that occur, and reports that it receives, at Board meetings throughout the year relating to fund investment performance. In this regard, the Board noted that as part of regularly scheduled fund reviews and other reports to the Board on fund performance, the Board considered annualized return information for the fund for different time periods, measured against an appropriate peer group of funds with similar objectives (peer group). In its evaluation of fund investment performance at meetings throughout the year, the Board gave particular attention to information indicating underperformance of certain Fidelity funds over different time periods and discussed with the Investment Advisers the reasons for such underperformance.

In addition to reviewing absolute and relative fund performance, the Independent Trustees periodically consider the appropriateness of fund performance metrics in evaluating the results achieved. The Independent Trustees generally give greater weight to fund performance over longer time periods than over shorter time periods.

The Board recognizes that in interest rate environments where many competitors waive fees to maintain a minimum yield, relative money market fund performance on a net basis (after fees and expenses) may not be particularly meaningful due to miniscule performance differences among competitor funds. Depending on the circumstances, the Independent Trustees may be satisfied with a fund's performance notwithstanding that it lags its peer group for certain periods.

Based on its review, the Board concluded that the nature, extent, and quality of services provided to the fund under the Advisory Contracts should continue to benefit the shareholders of the fund.

Competitiveness of Management Fee and Total Expense Ratio. The Board was provided with information regarding industry trends in management fees and expenses. In its review of the fund's management fee and total expense ratio, the Board considered the fund's management fee rate as well as other fund or class expenses, as applicable, such as transfer agent fees, pricing and bookkeeping fees, and custodial, legal, and audit fees. The Board also noted that Fidelity may agree to waive fees or reimburse expenses from time to time, and the extent to which, if any, it has done so for the fund.

Comparisons of Management Fees and Total Expense Ratios. Among other things, the Board reviewed data for selected groups of competitive funds and classes (referred to as "mapped groups") that were compiled by Fidelity based on combining similar investment objective categories (as classified by Morningstar) that have comparable investment mandates. The data reviewed by the Board included (i) gross management fee comparisons (before taking into account expense reimbursements or caps) relative to the total universe of funds within the mapped group; (ii) gross management fee comparisons relative to a subset of non-Fidelity funds in the mapped group that are similar in size and management fee structure to the fund (referred to as the "asset size peer group"); (iii) total expense comparisons of the fund relative to funds and classes in the mapped group that have a similar sales load structure to the fund (referred to as the "similar sales load structure group"); and (iv) total expense comparisons of the fund relative to funds and classes in the similar sales load structure group that are similar in size and management fee structure to the fund (referred to as the "total expense asset size peer group").

The information provided to the Board indicated that the fund's management fee rate ranked below the competitive median of the mapped group for 2023 and below the competitive median of the asset size peer group for 2023. Further, the information provided to the Board indicated that the total expense ratio of the fund ranked below the competitive median of the similar sales load structure group for 2023 and below the competitive median of the total expense asset size peer group for 2023.

In the information provided to the Board, Fidelity noted that competitor comparisons for money market funds are challenging in part due to the frequent imposition of reimbursements and waivers on money market funds in recent years. The Board considered that Fidelity believes that excluding fee waivers and reimbursements provides a better total expense comparison until such waivers are less prevalent in competitor data. When fee waivers and reimbursements are excluded from competitor data, the fund's total expense ratio ranked below the total expense asset size peer group competitive median for 2023.

Other Contractual Arrangements. The Board further considered that FMR has contractually agreed to reimburse the fund to the extent that total operating expenses, with certain exceptions, as a percentage of its average net assets, exceed 0.07% through July 31, 2025.

Fees Charged to Other Fidelity Clients. The Board also considered Fidelity fee structures and other information with respect to clients of Fidelity, such as other funds advised or subadvised by Fidelity, pension plan clients, and other institutional clients with similar mandates. The Board noted that a joint ad hoc committee created by it and the boards of other Fidelity funds periodically reviews and compares Fidelity's institutional investment advisory business with its business of providing services to the Fidelity funds and also noted the most recent findings of the committee. The Board noted that the committee's review included a consideration of the differences in services provided, fees charged, and costs incurred, as well as competition in the markets serving the different categories of clients.

Based on its review, the Board concluded that the fund's management fee is fair and reasonable in light of the services that the fund receives and the other factors considered. Further, based on its review of total expense ratios and fees charged to other Fidelity clients, the Board concluded that the fund's total expense ratio was reasonable in light of the services that the fund and its shareholders receive and the other factors considered.

Costs of the Services and Profitability. The Board considered the revenues earned and the expenses incurred by Fidelity in conducting the business of developing, marketing, distributing, managing, administering and servicing the fund and servicing the fund's shareholders. The Board also considered the level of Fidelity's profits in respect of all the Fidelity funds.

On an annual basis, Fidelity presents to the Board information about the profitability of its relationships with the fund. Fidelity calculates profitability information for each Fidelity fund, as well as aggregate profitability information for groups of Fidelity funds and all Fidelity funds, using a series of detailed revenue and cost allocation methodologies which originate with the books and records of Fidelity on which Fidelity's audited financial statements are based. The Audit Committee of the Board reviews any significant changes from the prior year's methodologies.

A public accounting firm has been engaged annually by the Board as part of the Board's assessment of Fidelity's profitability analysis. The engagement includes the review and assessment of the methodologies used by Fidelity in determining the revenues and expenses attributable to Fidelity's fund business. After considering the reports issued under the engagement and information provided by Fidelity, the Board concluded that while other allocation methods may also be reasonable, Fidelity's profitability methodologies are reasonable in all material respects.

The Board also reviewed Fidelity's non-fund businesses and potential indirect benefits such businesses may have received as a result of their association with Fidelity's fund business (i.e., fall-out benefits) as well as cases where Fidelity's affiliates may benefit from the funds' business. The Board considered areas where potential indirect benefits to the Fidelity funds from their relationships with Fidelity may exist. The Board's consideration of these matters was informed by the findings of a joint ad hoc committee created by it and the boards of other Fidelity funds to evaluate potential fall-out benefits.

The Board considered the costs of the services provided by and the profits realized by Fidelity in connection with the operation of the fund and was satisfied that the profitability was not excessive.

Economies of Scale. The Board considered whether there have been economies of scale in respect of the management of the Fidelity funds, whether the Fidelity funds (including the fund) have appropriately benefited from any such economies of scale, and whether there is potential for realization of any further economies of scale. The Board considered the extent to which the fund will benefit from economies of scale as assets grow through increased services to the fund, through waivers or reimbursements, or through fee or expense ratio reductions. The Board also noted that a committee created by it and the boards of other Fidelity funds periodically analyzes whether Fidelity attains economies of scale in respect of the management and servicing of the Fidelity funds, whether the Fidelity funds have appropriately benefited from such economies of scale, and whether there is potential for realization of any further economies of scale.

The Board concluded, taking into account the analysis of the committee, that economies of scale, if any, are being appropriately shared between fund shareholders and Fidelity.

Additional Information Requested by the Board. In order to develop fully the factual basis for consideration of the Fidelity funds' advisory contracts, the Board requested and received additional information on certain topics, including: (i) portfolio manager changes that have occurred during the past year; (ii) hiring, training, compensating, and retaining adviser and sub-adviser personnel; (iii) the terms of the funds' various management fee structures and arrangements for transfer agent and pricing and bookkeeping services; (iv) Fidelity's fund profitability methodology, profitability trends for certain funds, the allocation of various costs to different funds, and the impact of certain factors on fund profitability results; (v) the impact on fund profitability of recent industry trends, such as the growth in passively managed funds and the changes in flows for different types of funds; (vi) the types of management fee and total expense comparisons provided, and the challenges and limitations associated with such information; (vii) explanations regarding the relative total expense ratios and management fees of certain funds and classes, total expense and management fee competitive trends, and methodologies for total expense and management fee competitive comparisons; (viii) matters related to money market funds, exchange-traded funds, and target date funds; (ix) the arrangements with and compensation paid to certain fund sub-advisers and the treatment of such compensation within Fidelity's fund profitability methodology; and (x) the terms of management contracts between Fidelity and other funds and products not overseen by the Board.

Conclusion. Based on its evaluation of all of the conclusions noted above, and after considering all factors it believed relevant, the Board, including the Independent Trustees, concluded that the advisory and sub-advisory fee arrangements are fair and reasonable in light of all of the surrounding circumstances and that the fund's Advisory Contracts should be renewed through September 30, 2025.

1.9885509.106

OMM-SANN-1124

Item 8.

Changes in and Disagreements with Accountants for Open-End Management Investment Companies

See Item 7.

Item 9.

Proxy Disclosures for Open-End Management Investment Companies

See Item 7.

Item 10.

Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies

See Item 7.

Item 11.

Statement Regarding Basis for Approval of Investment Advisory Contract

See Item 7.

Item 12.

Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies

Not applicable.

Item 13.

Portfolio Managers of Closed-End Management Investment Companies

Not applicable.

Item 14.

Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers

Not applicable.

Item 15.

Submission of Matters to a Vote of Security Holders

There were no material changes to the procedures by which shareholders may recommend nominees to the Fidelity Salem Street Trust’s Board of Trustees.

Item 16.

Controls and Procedures

(a)(i) The President and Treasurer and the Chief Financial Officer have concluded that the Fidelity Salem Street Trust’s (the “Trust”) disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act) provide reasonable assurances that material information relating to the Trust is made known to them by the appropriate persons, based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this report.

(a)(ii) There was no change in the Trust’s internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act) that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the Trust’s internal control over financial reporting.

Item 17.

Disclosure of Securities Lending Activities for Closed-End Management Investment Companies

Not applicable.

Item 18.

Recovery of Erroneously Awarded Compensation

(a)

Not applicable.

(b)

Not applicable.

Item 19.

Exhibits


(a)	(1)	Not applicable.
(a)	(2)	Certification pursuant to Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) is filed and attached hereto as Exhibit 99.CERT.
(a)	(3)	Not applicable.
(b)		Certification pursuant to Rule 30a-2(b) under the Investment Company Act of 1940 (17 CFR 270.30a-2(b)) is furnished and attached hereto as Exhibit 99.906CERT.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Fidelity Salem Street Trust


By:	/s/Laura M. Del Prato
	Laura M. Del Prato
	President and Treasurer (Principal Executive Officer)

Date:	November 21, 2024

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By:	/s/Laura M. Del Prato
	Laura M. Del Prato
	President and Treasurer (Principal Executive Officer)

Date:	November 21, 2024


By:	/s/Stephanie Caron
	Stephanie Caron
	Chief Financial Officer (Principal Financial Officer)

Date:	November 21, 2024

Exhibit EX-99.CERT

I, Laura M. Del Prato, certify that:

I have reviewed this report on Form N-CSR of Fidelity Salem Street Trust;

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based upon such evaluation; and

Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:

November 21, 2024

/s/Laura M. Del Prato

Laura M. Del Prato

President and Treasurer (Principal Executive Officer)

I, Stephanie Caron, certify that:

I have reviewed this report on Form N-CSR of Fidelity Salem Street Trust;

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:

November 21, 2024

/s/Stephanie Caron

Stephanie Caron

Chief Financial Officer (Principal Financial Officer)

Exhibit EX-99.906CERT

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code)

In connection with the attached Report of Fidelity Salem Street Trust (the “Trust”) on Form N-CSR to be filed with the Securities and Exchange Commission (the “Report”), each of the undersigned officers of the Trust does hereby certify that, to the best of such officer’s knowledge:

The Report fully complies with the requirements of 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Trust as of, and for, the periods presented in the Report.

Dated: November 21, 2024

/s/Laura M. Del Prato

Laura M. Del Prato

President and Treasurer (Principal Executive Officer)

Dated: November 21, 2024

/s/Stephanie Caron

Stephanie Caron

Chief Financial Officer (Principal Financial Officer)

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Trust and will be retained by the Trust and furnished to the Securities and Exchange Commission or its staff upon request.

v3.24.3

Form N-CSR Cover
6 Months Ended

Sep. 30, 2024

Shareholder Report [Line Items]

Document Type N-CSRS

Amendment Flag false

Registrant Name Fidelity Salem Street Trust

Entity Central Index Key 0000035315

Entity Investment Company Type N-1A

Document Period End Date Sep. 30, 2024

Form N-CSR Cover	6 Months Ended
Sep. 30, 2024
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	Fidelity Salem Street Trust
Entity Central Index Key	0000035315
Entity Investment Company Type	N-1A
Document Period End Date	Sep. 30, 2024

v3.24.3

Shareholder Report
6 Months Ended

Sep. 30, 2024

USD ($)

shares

Shareholder Report [Line Items]

Document Type N-CSRS

Amendment Flag false

Registrant Name Fidelity Salem Street Trust

Entity Central Index Key 0000035315

Entity Investment Company Type N-1A

Document Period End Date Sep. 30, 2024

Fidelity SAI Municipal Money Market Fund

Shareholder Report [Line Items]

Fund Name Fidelity® SAI Municipal Money Market Fund

Class Name Fidelity® SAI Municipal Money Market Fund

Trading Symbol FMQXX

Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® SAI Municipal Money Market Fund for the period April 1, 2024 to September 30, 2024.

Shareholder Report Annual or Semi-Annual semi-annual shareholder report

Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-3455 or by sending an e-mail to fidfunddocuments@fidelity.com.

Additional Information Phone Number 1-800-544-3455

Additional Information Email fidfunddocuments@fidelity.com

Additional Information Website fundresearch.fidelity.com/prospectus/sec

Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)

Costs of a $10,000 investment

Costs paid as a percentage of a $10,000 investment

Fidelity® SAI Municipal Money Market Fund

$ 4

0.07%

Expenses Paid, Amount $ 4

Expense Ratio, Percent 0.07%

Net Assets $ 43,124,869

Holdings Count | shares 1

Additional Fund Statistics [Text Block] Key Fund Statistics

(as of September 30, 2024)

KEY FACTS

Fund Size

$43,124,869

Number of Holdings

1

Holdings [Text Block] EFFECTIVE MATURITY DIVERSIFICATION (% of Fund's net assets) Days 1-7 99.7 Net Other Assets (Liabilities) 100.0 ASSET ALLOCATION (% of Fund's net assets)

v3.24.3

Shareholder Report, Holdings (Details) - Fidelity SAI Municipal Money Market Fund

Sep. 30, 2024

EMD0Member

Holdings [Line Items]

Percent of Net Asset Value 99.70%

AANetOtherAssetsLiabilitiesMember

Holdings [Line Items]

Percent of Net Asset Value 100.00%

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Shareholder Report, Holdings (Details) - Fidelity SAI Municipal Money Market Fund	Sep. 30, 2024
EMD0Member
Holdings [Line Items]
Percent of Net Asset Value	99.70%
AANetOtherAssetsLiabilitiesMember
Holdings [Line Items]
Percent of Net Asset Value	100.00%