UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 11-K

For the fiscal year ended December 31, 2023

OR

For the Transition Period From      to     

Commission File Number 001-37845

MICROSOFT CORPORATION SAVINGS PLUS 401(k) PLAN

Microsoft Corporation

One Microsoft Way

Redmond, Washington 98052-6399

REQUIRED INFORMATION

The Microsoft Corporation Savings Plus 401(k) Plan (the “Plan”) is subject to the Employee Retirement Income Security Act of 1974, as amended (“ERISA”). Therefore, in lieu of the required information outlined as Items 1-3 of the Form 11-K, the statements of net assets available for benefits as of December 31, 2023 and 2022 and the related statement of changes in net assets available for benefits for the year ended December 31, 2023, which have been prepared in accordance with the financial reporting requirements of ERISA, are attached hereto as Appendix 1 and incorporated herein by this reference.

SIGNATURES

The Plan.  Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

APPENDIX 1

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM;

FINANCIAL STATEMENTS AS OF DECEMBER 31, 2023 AND 2022 AND FOR THE YEAR ENDED DECEMBER 31, 2023;

NOTES TO FINANCIAL STATEMENTS; AND

SUPPLEMENTAL SCHEDULES AS OF AND FOR THE YEAR ENDED DECEMBER 31, 2023

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

TABLE OF CONTENTS

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Plan Participants and Plan Administrator of the Microsoft Corporation Savings Plus 401(k) Plan

Opinion on the Financial Statements

We have audited the accompanying statements of net assets available for benefits of the Microsoft Corporation Savings Plus 401(k) Plan (the “Plan”) as of December 31, 2023 and 2022, the related statement of changes in net assets available for benefits for the year ended December 31, 2023, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2023 and 2022, and the changes in net assets available for benefits for the year ended December 31, 2023, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on the Plan’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Plan in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Report on Supplemental Schedules

The supplemental schedules of assets (held at end of year) as of December 31, 2023 and delinquent participant contributions for the year ended December 31, 2023 have been subjected to audit procedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental schedules are the responsibility of the Plan’s management. Our audit procedures included determining whether the supplemental schedules reconcile to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental schedules. In forming our opinion on the supplemental schedules, we evaluated whether the supplemental schedules, including their form and content, are presented in compliance with the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, such schedules are fairly stated, in all material respects, in relation to the financial statements as a whole.

/s/ Deloitte & Touche LLP

Seattle, Washington

June 25, 2024

We have served as the auditor of the Plan since 1987.

1

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS

Refer to accompanying notes.

2

STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS

Refer to accompanying notes.

3

NOTES TO FINANCIAL STATEMENTS

NOTE 1 — DESCRIPTION OF THE PLAN AND ACCOUNTING POLICIES

Plan Description

The Microsoft Corporation Savings Plus 401(k) Plan (the “Plan”), a defined contribution plan, is sponsored by Microsoft Corporation (the “Company” or “Microsoft”). Participating employers included in the Plan are Microsoft Corporation; MOL Corporation; Vexcel Corporation; Microsoft Online, Inc.; Undead Labs; LinkedIn Corporation; GitHub, Inc.; inXile Entertainment, Inc. (“inXile”); Double Fine Productions (“Double Fine”) (effective December 8, 2022); Obsidian Entertainment, Inc. (“Obsidian”) (effective January 1, 2024); and ZeniMax Media Inc. (“ZeniMax”) (effective March 20, 2024). These entities represent Microsoft or wholly owned subsidiaries of Microsoft. The Plan year is January 1 through December 31. The Plan is administered by the 401(k) Administrative Committee (the “Plan Administrator”) and subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”). Fidelity Management Trust Company (“Fidelity”) is the trustee and third-party administrator for the Plan. The information below summarizes certain aspects of the Plan as in effect during 2023, and is intended to be a summary only. Plan participants should refer to the Summary Plan Description for more complete information.

Accounting Principles

The financial statements and accompanying notes are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”).

Eligibility

Regular and retail services employees of participating employers who are on U.S. payroll and have reached age 18 may enroll in the Plan at any time.

Eligible Compensation

Eligible compensation includes wages, salary, bonuses, commissions, and overtime. Compensation does not include, for example, items such as amounts earned with respect to any equity-based compensation plan, program, grant, award, or benefit, reimbursements or other expense allowances, fringe benefits (cash and noncash), moving expenses, deferred compensation, welfare plan benefits including health or life insurance, severance plan payments, unused accrued vacation payments, or bonuses or expense allowances which are not based upon performance as an employee.

Contributions

Participant Contributions

Participants may contribute to the Plan on a pre-tax and/or Roth basis using eligible compensation each pay period, subject to statutory and regulatory limitations. Participants reaching age 50 or older by the end of the Plan year may also make additional catch-up contributions to the Plan on a pre-tax and/or Roth basis. During 2023, the maximum annual 401(k) pre-tax and Roth contribution limit was $22,500, and the maximum annual catch-up contribution to the Plan was $7,500. Additionally, participants could contribute up to $32,250 for 2023 on an after-tax basis. A participant’s aggregate contribution election (combined pre-tax, Roth, pre-tax catch-up, Roth catch-up, and after-tax) may not exceed 65 percent of his or her eligible compensation per pay period. Participants may elect to suspend or reinstate their contributions at any time. The Plan is required to return contributions received during the Plan year in excess of such limits.

Participants may also choose to make rollover contributions to the Plan of amounts received from an eligible employer plan maintained by another company, including direct rollovers from such plans. Participants may also make rollover contributions to the plan from an individual retirement account (“IRA”) or annuity described in Internal Revenue Code (“IRC”) Section 408(a), 408(b), 408(k), or 408(p) that is eligible to be rolled over and would otherwise be includible in gross income.

Participant contributions are recorded when withheld.

4

Employer Contributions

The Company and all other participating employers excluding inXile and Double Fine provide participants with a matching contribution on eligible pre-tax and/or Roth contributions of $0.50 for every $1.00 contributed. For inXile and Double Fine, the participating employer provides participants with a matching contribution on eligible pre-tax and/or Roth contributions of $0.25 for every $1.00 contributed. The matching contribution is provided for up to 50 percent, or 25 percent for inXile and Double Fine, of the maximum annual 401(k) pre-tax and Roth Internal Revenue Service (“IRS”) contribution limit (not including catch-up contributions). Participants do not receive a match on after-tax contributions.

Employer matching contributions are recorded when participant contributions are withheld.

Transfers

Obsidian was acquired by the Company in 2019 and the Obsidian Entertainment 401(k) Plan assets in the amount of $39,817,653 merged into the Plan in December 2023. Nuance Communications, Inc. was acquired by the Company in 2022 and the Nuance Communications, Inc. 401(k) Plan assets in the amount of $679,749,109 merged into the Plan in September 2023. The merged amounts are included as transfers in on the statement of changes in net assets available for benefits for the year ended December 31, 2023.

Employee Stock Ownership Plan Feature

The Plan includes an Employee Stock Ownership Plan (“ESOP”) feature for the portion of the Plan designed to invest primarily in Microsoft Common Stock. The ESOP feature allows participants to either reinvest their cash dividends earned on Microsoft Common Stock or receive those dividends in cash. Amounts invested in Microsoft Common Stock are treated as being held through the ESOP, provided that at the time such amounts were received by the Plan (e.g., through contributions or transfers), the participants whose Plan accounts received such assets were employed by Microsoft or a corporation that is part of the same controlled group of corporations as Microsoft.

Participants who are not employed by an employer established as a corporation that is part of the same controlled group of corporations as Microsoft may not participate in the ESOP, but may have their Plan accounts invested in Microsoft Common Stock to the same extent as other participants. However, such participants that are not eligible to participate in the ESOP feature are not eligible to receive dividends on Microsoft Common Stock in cash paid directly to them. Instead, dividends paid on amounts they have invested in Microsoft Common Stock will automatically be reinvested in Microsoft Common Stock.

Effective January 1, 2016, the investment of new contributions or transfer of existing account holdings into Microsoft Common Stock within the Plan was discontinued. Participant accounts with existing Microsoft Common Stock can retain those holdings, and dividends on Microsoft Common Stock can continue to be reinvested or received in cash.

Participant Accounts

Each participant’s account is credited with (a) participant contributions and employer contributions, and (b) the allocation of investment earnings, gains and losses, and expenses, based on participant earnings or account balances, as defined. The benefit to which a participant is entitled is the benefit that can be provided from the participant’s vested account. All amounts in participant accounts are participant-directed. Participants may invest in various instruments including mutual funds, common collective trusts, and separately managed accounts. Participants also have the option to direct their investments through a brokerage account.

Vesting

Participants are fully vested in Plan accounts at all times.

Distributions

Active participants may take a withdrawal from the Plan in the event of a financial hardship. A hardship withdrawal is limited to the amount necessary to meet the participant’s immediate financial need. Hardship withdrawals are further limited to contributions, and earnings thereon, to participants’ pre-tax, pre-tax catch-up, Roth, and Roth catch-up accounts.

5

Active participants may also generally take a withdrawal at any time from their rollover and after-tax accounts within the Plan. After reaching age 59¹⁄₂, active participants may withdraw all, or any portion, of the balance in their accounts. Distributions, in full or any portion, may also occur if the participant terminates employment, retires, becomes permanently disabled, or dies. Distributions of investments in Microsoft Common Stock may be taken in the form of Microsoft Common Stock or cash. Distributions may be made in installments.

Participants may also withdraw all, or any portion, of their pre-tax and Roth contributions during a leave of absence to perform qualified military service of at least 30 days, subject to a six-month suspension on future non-rollover contributions to the Plan, or if they elect a qualified reservist distribution. The distribution generally must be made in a single lump sum cash payment, except that distributions of investments in Microsoft Common Stock may be taken in the form of Microsoft Common Stock or cash.

In-Plan Roth Conversions

Active and terminated participants may convert any Plan balances (other than outstanding loans) to a Roth account within the Plan.

Administrative Expenses

Plan administrative expenses are paid by the Company to the extent not paid or offset by the Plan. Participants are responsible for fees associated with certain transactions or services they utilize, such as loan originations and maintenance, domestic relations order qualifications, dividend check processing, overnight check fees, and professional management service fees. Participants also pay commission charges to Fidelity for buying and selling Microsoft Common Stock within the Plan.

Plan Amendment and Termination

The Company has the right to amend or terminate the Plan. If the Plan is terminated, all account balances will be distributed in the form and manner determined by the Plan Administrator.

Risks and Uncertainties

The Plan utilizes various investment instruments, including common stock, mutual funds, common collective trusts, and separately managed accounts. Investment securities, in general, are exposed to various risks, such as interest rate risk, credit risk, and overall market volatility. Due to the level of risk associated with certain investment securities, including systemic market disruptions and geopolitical events, it is reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect the amounts reported in the financial statements.

Estimates and Assumptions

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and changes therein. Actual results and outcomes may differ from management’s estimates and assumptions due to risks and uncertainties. The Plan has no contingent assets or liabilities for any periods presented in these financial statements.

Valuation of Investments and Income (Loss) Recognition

Investments are recorded at fair value. Security transactions are accounted for as of the trade date. Dividend income is recorded on the ex-dividend date, and interest income is recorded as earned. Net increase (decrease) in fair value of investments includes the Plan’s gains and losses on investments bought, sold, and held during the year.

Participant Loans

Participant loans are measured at their unpaid principal balance plus any accrued but unpaid interest, and participant loans deemed distributed due to default are included in benefits paid to participants on the statement of changes in net assets available for benefits.

6

Receivables and Payables

As of December 31, 2023 and 2022, operating payables primarily consisted of accrued investment management expenses for the separately managed accounts. Other receivables and payables primarily consisted of unsettled trades. Other receivables also included accrued interest.

NOTE 2 — FINANCIAL INSTRUMENTS

The Plan accounts for certain assets and liabilities at fair value. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. The Plan categorizes each of its fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are:

Mutual funds are valued at the closing price as reported by the fund. Common stocks are valued at the closing price reported on the active markets on which the individual securities are traded. Brokerage account holdings include a variety of common stocks and mutual funds.

Common collective trusts are valued using the Net Asset Value (“NAV”) as a practical expedient and are not categorized in the fair value hierarchy. NAV is provided by the fund’s issuer and is based on the fair value of the underlying investments held by the fund less its liabilities. In the event the Plan were to initiate a full redemption of a common collective trust, the fund’s issuer reserves the right to temporarily delay withdrawal from the common collective trust in order to ensure that securities liquidations will be carried out in an orderly business manner. The common collective trusts have no unfunded commitments, other redemption restrictions, or redemption notice periods. The underlying portfolios of the common collective trusts are comprised of a mix of stocks, bonds, commodities, and cash.

Two of the common collective trusts, the State Street Short Term Investment Fund (“Fid Bank Trust St Inv Fund”) and the State Street Government Short Term Investment Fund (“SSBK Govt STIF Fund”), do not file as direct filing entities with the Department of Labor. The investment strategy of both of these funds is to provide safety of principal, daily liquidity, and a competitive yield over the long term. The Fid Bank Trust St Inv Fund invests primarily in short-term instruments such as certificates of deposit and commercial paper. The SSBK Govt STIF Fund invests primarily in repurchase agreements and U.S. Treasury obligations.

7

Financial Instruments Measured at Fair Value

NOTE 3 — DERIVATIVES

Investment managers acting under the Plan use derivative instruments to manage risks related to foreign currencies and interest rates, to enhance investment returns for the Plan, and to facilitate Plan portfolio diversification. The Plan’s derivatives consisted of over-the-counter foreign exchange forward contracts and exchange-traded futures contracts, as well as put and call options, for which no hedge accounting treatment is applied. The related notional amounts, gross fair values, and amounts recognized in earnings were immaterial as of December 31, 2023 and 2022 and for the year ended December 31, 2023. These derivative instruments are primarily a component of the “Other” caption of separately managed accounts in Note 2 – Financial Instruments.

NOTE 4 — PARTICIPANT LOANS

Participant loans are available in $100 increments ranging from $1,000 to $50,000. The maximum loan amount is the lesser of (a) 50 percent of the vested account balance, reduced by the current outstanding balance of all other loans from the Plan; or (b) $50,000, reduced by: (1) the current outstanding balance of all other loans from the Plan, and (2) the excess (if any) of all Plan loans during the previous 12 months over the current outstanding balance of Plan loans. When determining the maximum loan amount available under the Plan, outstanding loan balances under any subsidiary and affiliate Microsoft retirement plans are considered in conjunction with the Plan. Participants are limited to two loans – one Primary Residence Loan and one General Loan. The term of a Primary Residence Loan may not exceed 15 years (or 30 years for certain acquired legacy loans) or be less than 12 months. The term of a General Loan may not exceed five years (or 15 years for certain acquired legacy loans) or be less than 12 months.

8

The interest rate for participant loans is one percent plus the prime rate on corporate loans. The range of interest rates for outstanding Primary Residence Loans as of December 31, 2023 was 3.25 percent to 10.00 percent, maturing at various dates through October 2046. The range of interest rates for outstanding General Loans as of December 31, 2023 was 4.25 percent to 9.50 percent, maturing at various dates through January 2029.

Loan repayments are made through after-tax payroll deductions. Terminated employees generally have 60 days to elect to continue to make loan repayments or pay off the loan in full. Failure of the terminated employee to set up monthly electronic loan payments or pay off the loan in full during this 60-day window generally results in a default of the loan, which is taxable income to the participant, with a possible 10 percent early withdrawal penalty. Terminated employees who roll over their Plan account balance to an IRA, Roth IRA, or other employer plan during this 60-day window may avoid such taxable income and 10 percent early withdrawal penalty if they pay off the outstanding loan balance to the rollover recipient IRA custodian or employer plan by the due date (including extensions) for filing their federal income tax return for the year in which the rollover occurred.

NOTE 5 — TAX STATUS

The IRS has determined and informed the Plan, by a letter dated October 7, 2022, that the Plan is qualified as a tax-exempt plan under the appropriate sections of the IRC. The determination letter covered Plan amendments adopted from December 19, 2013 through December 15, 2021, and the trust agreement with Fidelity adopted on July 19, 2013. The Plan has been amended since the last date that was covered by the determination letter; however, the Plan Administrator believes that the Plan is currently designed and operated in compliance with the applicable requirements of the IRC. Therefore, the Plan is tax-exempt as of the financial statement date and no provision for income taxes has been recorded in the financial statements.

NOTE 6 — PARTY-IN-INTEREST TRANSACTIONS

Exempt Party-In-Interest Transactions

Plan investments include common collective trusts that are managed by affiliates of Fidelity; therefore, these transactions qualify as party-in-interest transactions. Fees paid for investment management services were included as a reduction of the return earned on each fund.

Transactions in Microsoft Common Stock also qualify as party-in-interest transactions. As of December 31, 2023 and 2022, the Plan held 12,909,377 shares of Microsoft Common Stock valued at $4,854,442,186 and 13,644,825 shares of Microsoft Common Stock valued at $3,272,302,023, respectively. During the year ended December 31, 2023, the Plan recorded Microsoft Common Stock dividend income of $37,025,454.

Participant loans, which are secured by the vested balances in the participants’ accounts, also qualify as party-in-interest transactions.

Nonexempt Party-In-Interest Transactions

There were two instances in 2022 when the Plan, due to administrative errors, remitted some participants’ contributions to Fidelity later than required under Department of Labor Regulation Sec. 2510.3-102. Both late remittances were promptly discovered, funded, and self-corrected, and were timely reported on IRS Form 5330, with payment of applicable excise taxes. The impacted participant accounts were credited by an amount representing investment income that would have been earned had the participant contributions been remitted on a timely basis. The aggregate amount of late contributions in 2022 totaled $209,867, of which $173,583 were remediated in 2022 and $36,284 were remediated in 2023, resulting in credits to participant accounts of $27 in 2023. There were no late contributions in 2023.

9

NOTE 7 — RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500

The following is a reconciliation of net assets available for benefits per the financial statements to net assets per the Form 5500:

The following is a reconciliation of benefits paid to participants per the financial statements to the Form 5500:

Benefits payable are recorded on the Form 5500 for payments to participants who requested and were approved payment by December 31, but had not been paid as of that date.

NOTE 8 — SUBSEQUENT EVENTS

ZeniMax was acquired by the Company in 2021 and the ZeniMax 401(k) Savings Plan assets were merged into the Plan in March 2024. The total amount of assets transferred into the Plan due to this merger was $234,001,569. ZeniMax became a participating employer in the Plan effective March 20, 2024.

10

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023

11

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023

12

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023

13

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023

14

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023

15

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023

16

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023

17

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023

18

MICROSOFT CORPORATION

SAVINGS PLUS 401(k) PLAN

EMPLOYER ID 91-1144442, PLAN 001

SUPPLEMENTAL SCHEDULE OF ASSETS (HELD AT END OF YEAR)

AS OF DECEMBER 31, 2023