UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 11-K

(X)ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2023

OR

( ) TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______________ to ______________

Commission File Number 000-00981

A.Full title of the plan and the address of the plan, if different from that of the issuer named below:

PUBLIX SUPER MARKETS, INC. 401(k) SMART PLAN

B.Name of issuer of the securities held pursuant to the plan and the address of its principal executive office:

PUBLIX SUPER MARKETS, INC.

3300 PUBLIX CORPORATE PARKWAY

LAKELAND, FLORIDA 33811

PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Index to Financial Statements, Supplemental

Schedule and Exhibit

	Page
Report of Independent Registered Public Accounting Firm	1
Financial Statements:
Statements of Net Assets Available for Plan Benefits - December 31, 2023 and 2022	2
Statements of Changes in Net Assets Available for Plan Benefits - Years ended December 31, 2023 and 2022	3
Notes to Financial Statements	4
Supplemental Schedule:
Schedule H, Line 4i, Schedule of Assets (Held at End of Year) - December 31, 2023	12
Signature	13
Exhibit:
Consent of Independent Registered Public Accounting Firm	14

Report of Independent Registered Public Accounting Firm

To the Plan Administrator and Plan Participants

Publix Super Markets, Inc. 401(k) SMART Plan:

Opinion on the Financial Statements

We have audited the accompanying statements of net assets available for plan benefits of the Publix Super Markets, Inc. 401(k) SMART Plan (the Plan) as of December 31, 2023 and 2022, the related statements of changes in net assets available for plan benefits for the years then ended, and the related notes (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the net assets available for plan benefits of the Plan as of December 31, 2023 and 2022, and the changes in net assets available for plan benefits for the years then ended, in conformity with U.S. generally accepted accounting principles.

Basis for Opinion

These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these 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.

Accompanying Supplemental Information

The Schedule H, Line 4i, Schedule of Assets (Held at End of Year) as of December 31, 2023 has been subjected to audit procedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental information is the responsibility of the Plan’s management. Our audit procedures included determining whether the supplemental information reconciles 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 information. In forming our opinion on the supplemental information, we evaluated whether the supplemental information, including its form and content, is presented in conformity 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, the supplemental information is fairly stated, in all material respects, in relation to the financial statements as a whole.

/s/ KPMG LLP

We have served as the Plan’s auditor since 2009.

Tampa, Florida

June 21, 2024

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PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Statements of Net Assets Available for Plan Benefits

December 31, 2023 and 2022

	2023		2022
Assets
Investments, at fair value	$	6,390,828,450	5,895,211,538
Notes receivable from participants	134,085,193		118,857,912
Employer contribution receivable	47,676,953		45,830,620
Total assets	6,572,590,596		6,059,900,070
Liabilities
Excess contributions payable	5,094,519		2,764,952
Total liabilities	5,094,519		2,764,952
Net assets available for plan benefits	$	6,567,496,077	6,057,135,118

See accompanying notes to financial statements.

2

PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Statements of Changes in Net Assets

Available for Plan Benefits

Years ended December 31, 2023 and 2022

	2023		2022
Additions to net assets attributed to:
Contributions:
Participant	$	324,444,505	309,346,769
Employer	47,676,953		45,830,620
Total contributions	372,121,458		355,177,389
Investment income:
Net appreciation (depreciation) of investments	477,380,779		(39,101,563)
Dividends	128,235,972		122,384,936
Interest	8,603,930		5,027,381
Total investment income	614,220,681		88,310,754
Total additions	986,342,139		443,488,143
Deductions from net assets attributed to:
Benefits paid to participants	473,698,101		482,580,542
Fees paid by participants	2,283,079		2,136,769
Total deductions	475,981,180		484,717,311
Net increase (decrease)	510,360,959		(41,229,168)
Net assets available for plan benefits:
Beginning of year	6,057,135,118		6,098,364,286
End of year	$	6,567,496,077	6,057,135,118

See accompanying notes to financial statements.

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PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Notes to Financial Statements

(1)Description of Plan and Summary of Accounting Policies

The following brief description of the Publix Super Markets, Inc. 401(k) SMART Plan (the Plan) provides only general information. Participants should refer to the Plan document or the summary plan description for a complete description of the Plan provisions.

(a)General

The Plan is a voluntary defined contribution plan subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (ERISA). Employees of Publix Super Markets, Inc. and its wholly owned subsidiaries, Publix Alabama, LLC, Publix Asset Management Company and Publix North Carolina Employee Services, LLC (the Company or Publix) are eligible to participate in the Plan six months after their hire date, if they are at least 18 years of age. The Plan year is a calendar year.

(b)Plan Amendments

On December 5, 2023, the Plan was amended effective January 1, 2024 to expand the definition of “Hour of Service” to add time related to short-term disability benefits. Additionally, the Plan was amended on December 5, 2023 to clarify certain provisions with effective dates of January 1, 2024 and January 3, 2001.

(c)Contributions

Eligible employees may contribute up to 30% of their eligible annual compensation to the Plan, subject to the maximum contribution limits established by federal law. Participants direct the investment allocations of their contributions and the earnings thereon among 12 investment fund options offered under the Plan. A participant’s investment allocation is limited to no more than 25% in the Publix Stock Fund.

The Company may make a discretionary annual matching contribution to the accounts of eligible participants of the Plan as determined by the Company’s Board of Directors. During 2023 and 2022, the Company’s Board of Directors approved a match of 50% of an eligible participant’s annual contributions up to 3% of eligible annual compensation, not to exceed a maximum match of $750 per participant. The match is determined as of the last day of the Plan year and funded by the Company in the subsequent Plan year. The match was paid by the Company in cash and invested in accordance with eligible participants’ investment allocations at the time the match was funded.

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PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Notes to Financial Statements

(d)Participant Accounts

Two separate accounts are maintained for each participant, a Savings Contributions Account and a Matching Contributions Account (the Accounts). Plan earnings are allocated and credited to the Accounts as of each valuation date. Each participant’s share of earnings is determined by the Plan Administrator, on a weighted average basis, so that each participant receives a pro-rata share. Forfeitures of non-vested Matching Contributions Accounts of participants and of Accounts of separated participants or beneficiaries that cannot be located after two years are used to reduce future Company matching contributions. Forfeitures totaled $1,699,956 and $1,128,283 as of December 31, 2023 and 2022, respectively. Forfeitures, and earnings thereon, totaling $1,466,792 and $1,124,172 were used to reduce the Company matching contributions for the 2023 and 2022 Plan years, respectively.

(e)Vesting

Participants are immediately vested in their contributions and earnings thereon. Company matching contributions and earnings thereon are generally 100% vested upon completing three years of credited service, reaching age 60, total disability or death. Matching contributions cannot be withdrawn or distributed until vested.

(f)Notes Receivable from Participants

All actively employed participants with available account balances may apply for a loan from their Accounts. The minimum amount a participant may borrow is $1,000. The maximum amount a participant may borrow is the lesser of: 1) 50% of the balances in the participant’s Savings Contributions Account and vested Matching Contributions Account; or 2) $50,000, less the participant’s highest outstanding loan balance during the previous 12 month period. However, the value of any shares held by the participant in the Publix Stock component of the Publix Stock Fund cannot be borrowed. Participants may initiate one loan each year and may only have one outstanding loan at a time. All administration costs incurred as a result of a loan are paid by the participant. The interest rate is determined by Voya Institutional Plan Services, the third-party Plan Administrator, each month based on the United States (U.S.) prime interest rate as published in the Wall Street Journal as of the last business day of the prior calendar month. The interest rate on a loan is fixed for the term of the loan. Participant loans are classified as notes receivable from participants in the statements of net assets available for plan benefits and measured at their unpaid principal balance plus any unpaid accrued interest.

A participant can choose a repayment term of up to five years. Repayments of principal and interest are made through after-tax payroll deductions each pay period. Repayments of principal and interest are credited pro-rata to the participant’s Savings Contributions Account and Matching Contributions Account from which the loan was originally funded and reinvested according to the participant’s current investment allocations. Upon separation of employment, all unpaid principal and unpaid accrued interest on any loan outstanding is immediately due and payable. Participants may repay a loan in total at any time after the loan has been in effect for at least 90 days and participants must wait 30 days between paying off one loan and initiating a new loan.

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PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Notes to Financial Statements

(g)Distribution of Benefits

Benefits are recorded when paid.

A participant who reaches age 59½ and who is actively employed by the Company may elect to withdraw all or a portion of his/her Savings Contributions Account and the vested portion of his/her Matching Contributions Account.

Upon separation of service, retirement, disability or death, a participant or his/her beneficiary may elect to receive full distribution of his/her Savings Contributions Account and vested Matching Contributions Account as of the valuation date immediately preceding the date of distribution, subject to certain restrictions on the sale of Publix Stock. If the value of a participant’s vested Accounts is $1,000 or less, the participant generally will receive an automatic distribution from the Plan as soon as administratively practicable. If the value of a participant’s vested Accounts exceeds $1,000 and the participant is not 62 years of age or older, the participant may elect to defer distribution. Payment of a deferred distribution must be made to a participant no later than April 1 of the Plan year immediately following the Plan year in which the participant reaches age 62.

If the value of a deceased participant’s Savings Contributions and Matching Contributions Accounts is $5,000 or less, the participant’s beneficiary generally will receive an automatic distribution from the Plan as soon as administratively practicable. If the value of a deceased participant’s Accounts exceeds $5,000, the beneficiary may elect to defer distribution. Payment of a deferred distribution must be made to a beneficiary other than a surviving spouse by December 31of the calendar year containing the fifth anniversary of the participant’s death. If the beneficiary is the participant’s surviving spouse, distribution can be deferred until the participant would have reached age 72.

(h)Termination of Plan

The Company intends to continue the Plan indefinitely, but is not contractually obligated to do so. The Company reserves the right to discontinue its contributions at any time and the right to amend or discontinue the Plan at any time. If the Plan is ever terminated, participants will be fully vested in all amounts credited to their Matching Contributions Accounts.

(i)Basis of Accounting

The financial statements of the Plan are prepared using the accrual basis of accounting.

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PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Notes to Financial Statements

(j)Investments

The Plan’s investments are stated at fair value. Quoted active market prices are used to value shares of mutual funds. The Publix Stock Fund is comprised of two components: Publix Stock and cash awaiting investment in Publix Stock. Cash awaiting investment in Publix Stock is invested in a short-term fixed income funding vehicle, State Street Institutional U.S. Government Money Market Fund (Premier Class), a mutual fund. Investment in Publix Stock represented 70.4% and 75.9% of the Plan’s net assets available for plan benefits as of December 31, 2023 and 2022, respectively. Because Publix Stock is not traded on an established securities market, the market price of Publix Stock is determined by the Trustee responsible for maintaining custody of the Publix Stock component of the Publix Stock Fund. As part of the process to determine the market price of Publix Stock, an independent valuation is obtained. The process includes comparing the Company’s financial results to those of comparable companies that are publicly traded (comparable publicly traded companies). The purpose of the process is to determine a value for Publix Stock that is comparable to the stock value of comparable publicly traded companies by considering both the results of the stock market and the relative financial results of comparable publicly traded companies. Valuation effective dates are generally March 1, May 1, August 1 and November 1. Readily determinable fair value is used to value the Plan’s interests in collective investment funds. There are no unfunded commitments or restrictions on redemptions by participants of the collective investment funds.

Purchases and sales of Publix Stock are recorded on the applicable valuation effective date for Publix Stock. Purchases and sales of all other securities are recorded on a trade date basis. Dividends are recorded on the ex-dividend date.

(k)Investment Risk

Investments are exposed to various risks, such as interest rate, market and credit risks. Due to the level of risk associated with certain investments, it is at least reasonably possible that changes in the values of investments will occur in the near term and that such changes could materially affect the Accounts of participants and the amounts reported in the financial statements and supplemental schedule of the Plan.

(l)Use of Estimates

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires the Plan to make estimates and assumptions that affect the reported amounts of net assets available for plan benefits and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of changes in net assets available for plan benefits during the reporting period. Actual results could differ from those estimates.

7

PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Notes to Financial Statements

(2)Administration of the Plan

Voya Institutional Trust Company, the Primary Trustee for the Plan, is responsible for the investment funds and other assets in which the employee contributions are invested, excluding Publix Stock. Tina P. Johnson is the Trustee responsible for the Publix Stock component of the Publix Stock Fund. Voya Institutional Plan Services serves as the third-party Plan Administrator. Officers and employees of the Company perform certain administrative functions for the Plan with no compensation from the Plan. The Plan administration costs are paid by the Company, except as follows:

•Loan processing fees of $1,016,300 and $947,175 during 2023 and 2022, respectively, were deducted from the Accounts of participants who received loans and were paid to the third-party Plan Administrator.

•Administrative fees of $816,547 and $768,028 during 2023 and 2022, respectively, were deducted from the Accounts of former employees and beneficiaries and were paid to the third-party Plan Administrator.

•Florida stamp taxes of $222,883 and $203,216 during 2023 and 2022, respectively, were deducted from the Accounts of participants who received loans in the state of Florida and were paid to the third-party Plan Administrator. The third-party Plan Administrator is responsible for reporting and remitting Florida stamp taxes to the Florida Department of Revenue.

•Expedited check fees of $227,349 and $218,350 during 2023 and 2022, respectively, were deducted from the net distribution, loan and withdrawal proceeds issued to participants who elected overnight delivery of their checks and were paid to the third-party Plan Administrator.

(3)Investments

The Plan’s investments [including gains (losses) on investments bought and sold, as well as held during the year] appreciated (depreciated) in value by $477,380,779 and ($39,101,563) during 2023 and 2022, respectively.

The fair value of investments is based on market prices using the following measurement categories:

Level 1 – Fair value is determined by using quoted prices in active markets for identical investments. Investments included in this category are mutual funds.

Level 2 – Fair value is determined by using other than quoted prices. By using observable inputs (such as similar securities), the fair value is determined through the use of models or other valuation methodologies (such as benchmarking of similar securities and using readily determinable fair value where the fair value per share is determined and published on a regular basis on a non-active market and is the basis for current transactions). Investments included in this category are Publix Stock and collective investment funds.

Level 3 – Fair value is determined by using other than observable inputs. Fair value is determined by using the best information available in the circumstances and requires significant management judgment or estimation. No investments are included in this category.

8

PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Notes to Financial Statements

Following is a summary of fair value measurements for investments as of December 31, 2023 and 2022:

	Fair Value		Level 1	Level 2	Level 3
December 31, 2023
Mutual Funds	$	287,736,037	287,736,037	—	—
Publix Stock	4,624,252,508		—	4,624,252,508	—
Collective Investment Funds	1,478,839,905		—	1,478,839,905	—
Total Investments	$	6,390,828,450	287,736,037	6,103,092,413	—
December 31, 2022
Mutual Funds	$	247,573,025	247,573,025	—	—
Publix Stock	4,598,364,887		—	4,598,364,887	—
Collective Investment Funds	1,049,273,626		—	1,049,273,626	—
Total Investments	$	5,895,211,538	247,573,025	5,647,638,513	—

(4)Employer Contribution Receivable

The 2023 and 2022 Plan year matching contributions, net of forfeitures, were $47,676,953 and $45,830,620, respectively. The matching contribution was recorded as a receivable as of the Plan year end and funded by the Company in the subsequent Plan year. These matching contributions were paid in cash and invested in accordance with eligible participants’ investment allocations at the time the matching contributions were funded.

(5)Party-in-Interest and Related Party Transactions

Certain Plan investments are collective investment and mutual funds managed by State Street Global Advisors (State Street), the investment management division of State Street Bank and Trust Company. State Street Bank and Trust Company is the custodian for the Plan under the direction of Voya Institutional Trust Company. Voya Institutional Plan Services serves as the third-party Plan Administrator.

In addition to Publix Stock, the transactions involving State Street investments qualify as party-in-interest transactions. Certain administration costs paid to Voya Institutional Plan Services also are considered party-in-interest transactions.

The Plan received cash dividend payments on Publix Stock of $120,736,452 and $110,479,026 during 2023 and 2022, respectively. Such dividends were invested in the cash component of the Publix Stock Fund. The number of shares of Publix Stock held in participant Accounts totaled 304,227,139 and 316,038,824 with fair values of $4,624,252,508 and $4,598,364,887 as of December 31, 2023 and 2022, respectively.

9

PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Notes to Financial Statements

(6)Reconciliation of Financial Statements to Form 5500

Following is a reconciliation of net assets available for plan benefits per the financial statements to the 2023 and 2022 Form 5500:

	December 31,
	2023		2022
Net assets available for plan benefits per the financial statements	$	6,567,496,077	6,057,135,118
Amounts allocated to withdrawing participants	(6,640,320)		(9,112,686)
Net assets available for plan benefits per the Form 5500	$	6,560,855,757	6,048,022,432

Following is a reconciliation of benefit payments to participants per the financial statements to the 2023 and 2022 Form 5500:

	Year ended December 31,
	2023		2022
Benefits paid to participants per the financial statements	$	473,698,101	482,580,542
Amounts allocated to withdrawing participants at end of year	6,640,320		9,112,686
Amounts allocated to withdrawing participants at beginning of year	(9,112,686)		(8,563,648)
Accrued excess contributions payable at end of year	(5,094,519)		(2,764,952)
Benefits paid to participants per the Form 5500	$	466,131,216	480,364,628
Distributions of excess contributions per the Form 5500	$	5,094,519	2,764,952

Amounts allocated to withdrawing participants are recorded on the Form 5500 for benefit claims that have been processed and approved for payment on or before December 31, 2023 and 2022, but not yet paid as of that date. Distributions of excess contributions and any allocable income or loss that were paid for the 2023 and 2022 Plan years were recorded as liabilities in the financial statements as of December 31, 2023 and 2022.

10

PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Notes to Financial Statements

(7)Tax Status

The Plan, as amended and restated as of January 1, 2013, received a favorable tax determination letter, dated April 3, 2014, from the Internal Revenue Service (IRS) under Internal Revenue Code (IRC) Section 401(a). As such, the Plan’s design is exempt from federal income taxes under IRC Section 501(a). Though the Plan has been amended since January 1, 2013, the Plan Administrator believes the Plan continues to be qualified and the Plan has been and is currently being operated in compliance with the applicable requirements of the IRC and the Plan document.

U.S. generally accepted accounting principles require the Plan Administrator to evaluate tax positions taken by the Plan and recognize a tax liability (or asset) if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. The Plan Administrator has analyzed the tax positions taken by the Plan and concluded that as of December 31, 2023 and 2022, there are no uncertain positions taken or expected to be taken that would require recognition of a liability (or asset) or disclosure in the financial statements. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress. The Plan Administrator believes the Plan is no longer subject to income tax examinations for years prior to 2017.

11

Supplemental Schedule

PUBLIX SUPER MARKETS, INC.

401(k) SMART PLAN

Schedule H, Line 4i, Schedule of Assets (Held at End of Year)

December 31, 2023

Name of Issuer and Title of Issue	Number of Units/Shares	Current Value
Investments:
American Funds EuroPacific Growth Fund (Class R-6)	913,286	$	49,956,733
Baird Aggregate Bond Fund (Institutional Shares)	3,795,456	37,423,201
Dimensional Fund Advisors U.S. Small Cap Portfolio (I) Fund	1,211,698	53,750,915
Invesco Stable Value Trust Fund (Class B1)	46,916,098	120,750,916
Publix Stock Fund:
Common stock of Publix Super Markets, Inc. *	304,227,139	4,624,252,508
State Street Institutional U.S. Government Money Market Fund (Premier Class) *	2,717,327	44,868,552
State Street S&P 500 Index Fund (Class N) *	2,372,261	279,136,853
State Street S&P Mid Cap Index Fund (Class XIV) *	3,387,601	75,699,341
State Street Strategic Balanced Funds:
Aggressive Strategic Balanced Fund (Class I) *	2,726,906	119,087,530
Moderate Strategic Balanced Fund (Class I) *	11,448,876	420,002,847
Conservative Strategic Balanced Fund (Class I) *	3,076,520	85,735,685
T. Rowe Price Blue Chip Growth Fund (Class T4)	5,294,162	378,426,733
T. Rowe Price Value Fund (I Class)	2,434,473	101,736,636
Total investments		6,390,828,450
Notes receivable from participants with interest rates ranging from 3.25% - 8.50% *		134,085,193
		$	6,524,913,643
* Parties-in-interest
See accompanying report of independent registered public accounting firm.

12

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the Publix Super Markets, Inc. 401(k) SMART Plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

		PUBLIX SUPER MARKETS, INC.
		401(k) SMART PLAN
Date: June 21, 2024	By:	/s/ Monica A. Allman
		Monica A. Allman
		Vice President Benefits Administration
		Publix Super Markets, Inc.,
		Plan Administrator

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