Document







UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

https://cdn.kscope.io/2a9229e8689d6904d2dc2031353d1618-image_2.jpg

FORM 11-K

https://cdn.kscope.io/2a9229e8689d6904d2dc2031353d1618-image_2.jpg

(Mark One)

☒ 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 1-475


https://cdn.kscope.io/2a9229e8689d6904d2dc2031353d1618-image_2.jpg

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

A. O. Smith Retirement Security Plan

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

A. O. Smith Corporation
11270 West Park Place
Milwaukee, WI 53224







1

Table of Contents


REQUIRED INFORMATION

1.Not Applicable.
2.Not Applicable.
3.Not Applicable.
4.The A. O. Smith Retirement Security Plan (the “Plan”) is subject to the requirements of the Employee Retirement Income Security Act of 1974 (“ERISA”). Attached hereto is a copy of the most recent financial statements and schedules of the Plan prepared in accordance with the financial reporting requirements of ERISA.
Signature
Exhibits
23.1    Consent of Independent Auditors
2


A. O. SMITH
RETIREMENT SECURITY PLAN
Milwaukee, Wisconsin

AUDITED FINANCIAL STATEMENTS

Years Ended December 31, 2023 and 2022

TABLE OF CONTENTS

Page (s)
4
5
6
7 - 13
14-16
3

Table of Contents
Report of Independent Registered Public Accounting Firm

Plan Administrator and Plan Participants
A.O. Smith Retirement Security Plan
Milwaukee, Wisconsin

Opinion on the Financial Statements
We have audited the accompanying statements of net assets available for benefits of the A.O. Smith Retirement Security Plan (the Plan) as of December 31, 2023 and 2022, and the related statement of changes in net assets available for benefits for the years then ended, and the related notes and supplemental schedule (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 A.O. Smith Retirement Security Plan as of December 31, 2023 and 2022, and the changes in net assets available for benefits for the years then ended, 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. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting, but not for the purpose of expressing an opinion on the effectiveness of the Plan’s internal control over financial reporting. Accordingly, we express no such opinion.

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.

Supplemental Information
The supplemental information contained in schedule of assets (held at end of year) 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/ Reilly, Penner & Benton LLP

We have served as the Plan’s auditor since 1993

June 27, 2024
Milwaukee, Wisconsin





4

Table of Contents
A. O. SMITH
RETIREMENT SECURITY PLAN

Statements of Net Assets Available for Benefits
December 31, 2023 and 2022

20232022
Assets:
Investments at Fair Value$2,465,094 $— 
Plan interest in A.O. Smith Corporation Master Trust at Fair Value563,119,347 493,557,167 
Total investments565,584,441 493,557,167 
Receivables:
Notes receivable from participants9,710,819 8,895,516 
Company contributions7,433,788 6,474,486 
Total receivables17,144,607 15,370,002 
Net assets available for benefits$582,729,048 $508,927,169 
The accompanying notes to the financial statements
are an integral part of this statement


5

Table of Contents
A. O. SMITH
RETIREMENT SECURITY PLAN

Statements of Changes in Net Assets Available for Benefits
Years Ended December 31, 2023 and 2022

20232022
Increases (Decreases):
Change in plan interest in A.O. Smith Corporation Master Trust (Note 2)$75,453,214$(81,095,753)
Net appreciation in fair value of investments61,787
Interest and dividends45,674
Interest income from participant loans470,757334,882
Net income (loss)76,031,432 (80,760,871)
Contributions:
Company16,687,57414,754,755
Participants23,425,77421,180,531
Rollovers3,748,857 16,342,276 
Total contributions43,862,20552,277,562
Total increases (decreases)119,893,637 (28,483,309)
Increases (Decreases):
Benefit and withdrawal payments48,626,021 51,404,266 
Change in net assets available before transfers71,267,616(79,887,575)
Transfers from other plans2,534,263
Change in net assets available for benefits73,801,879(79,887,575)
Net assets available for benefits:
Beginning of year508,927,169588,814,744
End of year$582,729,048 $508,927,169 
The accompanying notes to the financial statements
are an integral part of this statement.


6

Table of Contents

A. O. SMITH
RETIREMENT SECURITY PLAN
Notes to Financial Statements
December 31, 2023 and 2022

1. Description of Plan and Significant Accounting Policies
The A. O. Smith Retirement Security Plan (the Plan) was originally established as the A.O. Smith Profit Sharing Retirement Plan (the Plan) in 1956. Effective January 1, 2010, the Plan was renamed the A. O. Smith Retirement Security Plan and the accounts of all non-union participants maintained under the A. O. Smith Corporation Savings Plan were transferred into the Plan. The Plan generally covers salaried or commissioned employees of A. O. Smith Corporation (the Company), its subsidiaries and affiliates and the non-union hourly employees of the Company’s facilities in Appleton, WI; Ashland City, TN; Austin, TX; Charlotte, NC; Cookeville, TN; Dallas, TX; El Paso, TX; Florence, KY; Franklin, TN; Groveport, OH; Haltom City, TX; Johnson City, TN; Knoxville, TN; Lebanon, TN; McBee, SC; Milwaukee, WI; Nashville, TN; Phillipsburg, KS; Phoenix, AZ; Plymouth, MI; Pottstown, PA; and Rancho Cucamonga, CA providing a convenient means of savings with the assistance of the Company. To be eligible, certain employees must either be employed at a rate expected to work 1,000 hours of service in a plan year or actually complete 1,000 hours of service during their first 12 months of employment or any plan year thereafter. Employees are eligible to participate in the Plan on the first day of the month after the individual qualifies as an eligible employee. Employees elect to participate by designating a portion of their earnings to be contributed to an account maintained on behalf of the participant. Participants direct the investment of their contributions into various investment options offered by the Plan.
The Plan has contracted with Matrix Trust Company (Matrix) and Truist Investment Services Inc. (Truist) to act as custodian under the plan and One America Retirement Services LLC (One America) as record keeper under the Plan and therefore Matrix, Truist, and One America are each a party-in-interest to the Plan.
Effective January 1, 2010, the Plan was revised to satisfy the safe harbor requirements of Internal Revenue Code 401(k)(13) as follows:
a.An automatic enrollment feature was instituted, along with an annual automatic increase in employee pre-tax contributions;
b.Plan participants have the ability to contribute up to 100% of eligible compensation on a pre-tax basis; the company will make a matching contribution equal to 100% of the first 1% of a participant’s compensation and 50% on the next 5% of a participant’s compensation contributed to the Plan, for a maximum annual matching contribution of 3.5%; and
c.All matching contributions vest after two years of vesting service.
The Plan was also revised to permit the Company to make an additional discretionary matching contribution to be allocated as of the last day of the plan year for those participants who are employed on such date or who terminated during the year on or after attainment of age 65 or reaching retirement eligibility under their defined benefit plan, death, total and permanent disability, or termination resulting directly from job abolishment.
Also, effective January 1, 2010, all participants who are not eligible to accrue a benefit under any of the Company’s qualified defined benefit pension plans will be eligible for an annual non-elective employer contribution equal to 3% of the participant’s total compensation for the plan year, and will be eligible for a discretionary annual non-elective employer contribution in an amount determined by the Company, if any. In order to receive a non-elective employer contribution for a plan year, an eligible participant must be employed in a full-time equivalent position for the plan year or complete 1,000 hours of service during a plan year and be employed on the last day of the plan year or terminate employment during the plan year as a result of death, disability, retirement, or termination resulting from job abolishment. This non-elective contribution will vest after three years of vesting service.
Effective January 1, 2023, the Plan was amended to merge the Master Water Conditioning Corporation Profit Sharing Plan (the “Master Water Plan”) into the Plan. The related participants of the Master Water Plan were transferred to the Plan effective January 2023.
Contributions
The Plan is a defined contribution plan to which participants may make contributions of not less than 1% and up to 100% of their earnings in any combination of before-tax and after-tax (Roth) contributions. Before-tax contributions are excluded from the
7

Table of Contents

1. Description of Plan and Significant Accounting Policies (continued)
participant’s current wages for federal income tax purposes and included for Roth contributions. The Internal Revenue Code has set a maximum of $22,500 for tax-deferred contributions that may be excluded for any individual participant in 2023 and $20,500 in 2022.
The Internal Revenue Code also allows additional catch-up contributions for participants age fifty or older. The maximum additional contribution allowed was $7,500 in 2023 and $6,500 in 2022. The Plan also provides for Company contributions in the form of matching contributions and non-elective contributions.
No federal income tax is paid on the pre-tax participant deferrals and Company contributions and growth thereon until the participant withdraws them from the Plan.
Contributions from participants are recorded when the Company makes payroll deductions from Plan participants. Contributions from the Company are accrued in the period in which they become obligations of the Company in accordance with terms of the Plan.
For non-union employees, the Company makes a matching contribution equal to 100% on the first 1% of a participant’s compensation and 50% on the next 5% of a participant’s compensation that is contributed to the Plan, for a maximum annual matching contribution of 3.5%. In addition to the matching contribution, the Company also makes a non-elective contribution of 3% of pay for certain participants. The Company will make a non-elective contribution for a participant for a plan year if the participant was not eligible to accrue a benefit under any defined benefit pension plan or money purchase pension plan sponsored or contributed to by the Company for such plan year, the participant was either employed as a full-time equivalent employee for the plan year or is credited with 1,000 hours of service for the plan year, and the participant was employed by the Company on December 31 of the plan year or terminated during the plan year after having attained age 65 (or retirement eligibility under the company’s defined benefit plan) or as a result of death, disability or job elimination.
Union employees receive a Company matching contribution equal to 50% of their contribution up to 4% of payroll period compensation.
Participant Account Provisions
A separate account is maintained for each participant. The separate account balances are adjusted periodically as follows:
a.Weekly for hourly participant contributions; semimonthly for salaried participant contributions.
b.Weekly for Company matching contributions for hourly participants; semimonthly for Company matching contributions for salaried participants.
c.Annually for non-elective company contributions.
d.Daily for a proportionate share of increases and decreases in the fair value of Plan assets.
e.At the time of benefit distribution or withdrawal, which consists of the following:
i.Upon retirement, death, disability, or termination of employment resulting from a permanent reduction of personnel, an employee may withdraw any amount or the entire account balance for any reason. At age 72 (70 1/2 if you reach 70 1/2 before January 1, 2020), an account distribution election must be made.
ii.Upon termination of employment for other reasons, the balance in the separate account (reduced for non-vested Company contributions and growth thereon based on years of service) may be paid in a lump sum.
iii.An active participant age 59 1/2 or older may withdraw a lump sum of any amount up to the balance in the separate account, other than the employer’s non-elective contributions and earnings thereon.
iv.A non-union participant may withdraw all or any portion of the separate account attributable to after-tax contributions and earnings and rollover contributions and earnings. All or any portion of the balance attributable to Company contributions made prior to January 1, 2010, discretionary matching contributions, and earnings on these contributions may also be withdrawn if the participant has been employed by the Company for five full years of employment with the Company.
v.A non-union participant may withdraw at any time any amount attributable to participant contributions and earnings, to prevent eviction from or foreclosure on, a principal residence or to pay certain expenses (namely post-secondary education, unreimbursed medical expenses, funeral costs, and repairs to principal residence). Withdrawals may not include earnings on 401(k) contributions posted to a participant’s account after 1988.
8

Table of Contents

1. Description of Plan and Significant Accounting Policies (continued)
vi.A non-union participant may withdraw in a lump sum all participant contributions made as a result of the participant’s initial automatic enrollment in the Plan within the first 90 days of the commencement of the contributions.
vii.No lump sum cash distribution in excess of $5,000 will be made without the consent of the participant.
f.Daily for investment allocation changes made by participants.
Forfeitures arising from participant accounts are allocated to a Plan forfeiture account, which is reduced periodically to reduce future employer contributions or pay Plan expenses. Participants should refer to the Plan document for a complete description of the Plan’s provisions.
Vesting
Participants of the Plan are immediately 100% vested in their own contributions to the Plan. Company matching contributions are 100% vested after two years of vesting service. Non-elective company contributions to the plan are 100% vested after three years of vesting service.
Notes Receivable from Participants
Participants may borrow from their Plan accounts (excluding employer non-elective contributions and earnings thereon) a minimum of $1,000 up to a maximum of $50,000 or 50 percent of their account balance, whichever is less. The loans are secured by the balance in the participant’s account and bear interest at rates which are commensurate with local prevailing rates as determined by the Plan’s Trustee.
Forfeited Accounts
At December 31, 2023 and 2022, forfeited non-vested accounts totaled $744,811 and $816,984, respectively. These accounts will be used to reduce future employer contributions or future administrative expenses of the Plan. During 2023 forfeitures were used to reduce $19,574 of administration fees and $873,040 of employer contributions. During 2022 forfeitures were used to reduce $18,900 of administration fees and $705,388 of employer contributions.
Use of Estimates
The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts in the financial statements. Actual results could differ from those estimates.
Investment Valuation
U.S. GAAP provides the framework for measuring fair value. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (level 1 measurements) and the lowest priority to unobservable inputs (level 3 measurements). The three levels of the fair value hierarchy under U.S. GAAP are described as follows:
Level 1 – Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Plan has the ability to access.
Level 2 – Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in inactive markets; inputs other than quoted prices that are observable for the asset or liability; inputs that are derived principally from or corroborated by observable market data by correlation or other means.
If the asset or liability has a specified (contractual) term, the level 2 input must be observable for substantially the full term of the asset or liability.
Level 3 – Inputs to the valuation methodology are unobservable and significant to the fair value measurement.
The asset or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.
Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs.
9

Table of Contents

1. Description of Plan and Significant Accounting Policies (continued)
Purchases and sales of investments are recorded on a trade date basis. Dividend income is recorded on the ex-dividend date. Interest income is recorded on an accrual basis. Realized gains and losses and unrealized appreciation and depreciation of plan assets are reported in the statements of changes in net assets available for benefits as net appreciation (depreciation) in the fair value of investments.
Following is a description of the valuation methodologies used by the Plan for assets measured at fair value. There have been no changes in the methodologies used at December 31, 2023 and 2022.
Mutual funds: Shares held in mutual funds are valued at active market prices that represent the Net Asset Value (“NAV”) of shares held by the Master Trust at year end and are classified as Level 1. The NAV is based on the value of the underlying assets owned by the fund, minus its liabilities, then divided by the number of shares outstanding. Mutual funds held by the Master Trust are open-end mutual funds that are registered with the U.S. Securities and Exchange Commission (“SEC”). These funds are required to publish their daily NAV and to transact at that price. The mutual funds held by the Plan are therefore deemed to be actively traded.
Common/collective trusts: Valued at the NAV of shares of a bank collective trust held by the Master Trust at year-end. The NAV is based on the fair value of the underlying investments held by the fund. Participant transactions (issuances and redemptions) may occur daily. Were the Master Trust to initiate a full redemption of the collective trust, the investment advisor reserves the right to temporarily delay withdrawal from the trust in order to ensure that securities liquidations will be carried out in an orderly business manner.
Equities: Valued at the NAV of shares held at year-end. The NAV is based on the fair value of the underlying investments held by the participants. Participant transactions (issuances and redemptions) may occur daily.
Corporate Bonds: Valued using pricing models maximizing the use of observable inputs for similar securities. This includes basing value on yields currently available on comparable securities of issuers with similar credit ratings. When quoted prices are not available for identical or similar securities, the security is valued under a discounted cash flows approach that maximizes observable inputs, such as current yields of similar instruments, but includes adjustments for certain risks that may not be observable, such as credit and liquidity risks or a broker quote, if available.
The preceding methods described may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, although the Plan believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.
Administrative Expenses
Expenses related to the administration of the Plan are paid out of the principal or income of the Plan. These amounts are netted with investment income on the Statements of Changes in Net Assets Available for Benefits. Administrative expenses totaled $813,290 and 664,088 for the years ended December 31, 2023 and 2022, respectively.
Payment of Benefits
Benefits are recorded when paid. As of December 31, 2023 and December 31, 2022, $226,862 and $2,707, respectively, were requested by participants but had not yet been paid from the Plan.

10

Table of Contents

1. Description of Plan and Significant Accounting Policies (continued)
Reclassifications
Certain items in the prior year have been reclassified to conform to the presentation in the current year financial statements.
Subsequent Events
Management has evaluated subsequent events for possible recognition or disclosure through the date of financial statement issuance June 27, 2024. There were no subsequent events that required recognition or disclosure.
2. A. O. Smith Corporation Master Trust
The Plan has assets held in the A. O. Smith Corporation Master Trust at Matrix as of December 31, 2023. The Plan offers 25 investment vehicles in which participants may invest their account balances. If available, quoted market prices are used to value investments. Shares of mutual funds and common collective trusts are valued at the net asset value of shares held by the plan at year end.
The amount of Master Trust assets, income and change in value which is allocated to the Plan is determined by the ratio of participant account balances in the Plan to the total participant account balances of all participating plans. As of December 31, 2023 and 2022, the Plan’s interest in the net assets of the Master Trust was 100.0%. Significant information related to the investments in the Master Trust as of and for the year ended December 31, 2023, is as follows:
December 31, 2023December 31, 2023
Master Trust BalancesPlan’s Interest in Master Trust
a. Registered Investment Company Mutual Funds$169,347,118$169,347,118
b. Common/Collective Trusts392,699,037 392,699,037 
d. Interest bearing cash1,073,192 1,073,192 
Total$563,119,347$563,119,347


The following are net appreciation in the fair value of investments and investment income for the Master Trust for the year ended December 31, 2023.
Net appreciation in fair value of investments$70,168,677 
Investment Income5,284,537 
Total$75,453,214 
Significant information related to the investments in the Master Trust as of and for the year ended December 31, 2022, is as follows:
December 31, 2022December 31, 2022
Master Trust BalancesPlan’s Interest in Master Trust
a. Registered Investment Company Mutual Funds$147,755,613$147,755,613
b. Common/Collective Trusts345,501,086 345,501,086 
d. Interest bearing cash300,468 300,468 
Total$493,557,167$493,557,167

The following are net deprecation in the fair value of investments and investment income for the Master Trust for the year ended December 31, 2022.
Net depreciation in fair value of investments$(85,436,609)
Investment Income4,340,856 
Total$(81,095,753)

11

Table of Contents


The following summarizes the classification of investments at fair value by classification and method of valuation in accordance with U.S. GAAP:
Assets at Fair Value as of December 31, 2023
DescriptionTotalLevel 1Level 2Level 3
Interest bearing cash$1,073,192 1073192$1,073,192 $— $— 
Mutual Funds169,347,118 169,347,118 — — 
Total assets in the fair value hierarchy170,420,310 $170,420,310 $— $— 
Investment measured at NAV (a)392,699,037 
Total investments, at fair value$563,119,347 
Assets at Fair Value as of December 31, 2022
DescriptionTotalLevel 1Level 2Level 3
Interest bearing cash$300,468 $300,468 $— $— 
Mutual Funds147,755,613 147,755,613 — — 
Total assets in the fair value hierarchy148,056,081 $148,056,081 $— $— 
Investment measured at NAV (a)345,501,086 
Total investments, at fair value$493,557,167 
(a)In accordance with Subtopic 820-10, certain investments that were measured at net asset value per share (or its equivalent) have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the statement of net assets available for benefits.
The following table summarizes investments measured at fair value based on NAV per share as of December 31, 2023 and 2022, respectively:
December 31, 2023Fair ValueUnfunded CommitmentsRedemption Frequency
(if currently eligible)
Redemption Notice Period
Common/Collective trusts$392,699,037n/aDailyNone
December 31, 2022Fair ValueUnfunded CommitmentsRedemption Frequency
(if currently eligible)
Redemption Notice Period
Common/Collective trusts$345,501,086n/aDailyNone
3. Fair value measurements
The following summarizes the classification of investments at fair value by classification and method of valuation in accordance with U.S. GAAP:
Assets at Fair Value as of December 31, 2023
DescriptionTotalLevel 1Level 2Level 3
Cash$115,444 $115,444 $— $— 
Equities360,155 360,155 — — 
Corporate Bonds1,989,495 — 1,989,495 — 
Total assets in the fair value hierarchy$2,465,094 $475,599 $1,989,495 $— 



12

Table of Contents
4. Income Tax Status
The Plan obtained its latest determination letter on August 24, 2016, in which the Internal Revenue Service stated the Plan as then designed, was in compliance with the applicable requirements of the Internal Revenue Code. The Plan administrator and the Plan’s tax counsel believe that the Plan is currently designed and being operated in compliance with the applicable requirements of the Internal Revenue Code. Therefore, no provision for income taxes has been included in the Plan’s financial statements.
U.S. GAAP requires plan management 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 Department of Labor or Internal Revenue Service. Plan management has analyzed the tax positions taken by the Plan, and has concluded that as of December 31, 2023, 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.
5. Plan Termination
While the Company has not expressed any intent to terminate the Plan, it is free to do so at any time. In the event of termination, each participant automatically becomes vested to the extent of the balance in their separate account.
6. Risks and Uncertainties
The Plan invests in various investment securities. Investment securities are exposed to various risks of loss such as interest rate, market, and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits.
7. Party-in-Interest and Related Party Transactions
The Plan invests in shares of funds managed by an affiliate of the Trustees as defined by the Plan and, therefore, these transactions in such investments qualify as party-in-interest. The Plan invests in the common stock of AO Smith, which is a party-in-interest and a related party to the Plan. Notes receivable from participants also qualify as party-in-interest transactions.
13

Table of Contents

A. O. SMITH
RETIREMENT SECURITY PLAN
EIN 39-0619790, Plan 018
Schedule H, line 4i - Schedule of Assets Held (at End of Year)

December 31, 2023
(a)(b)(c)(d)(e)
Identity of IssuerDescription of Investment, Including Maturity Date, Rate of Interest, Collateral, Par or Maturity DateCostCurrent Value
EquitiesParRate of InterestMaturity Date
Abbott Laboratories Common StockN/AN/AN/A**$10,457
Accenture PLCCommon StockN/AN/AN/A**8,773
Adobe Inc comCommon StockN/AN/AN/A**5,966
Air Products and Chemicals IncCommon StockN/AN/AN/A**8,214
Alphabet Inc Cap Stk CL CCommon StockN/AN/AN/A**14,093
Amazon.com IncCommon StockN/AN/AN/A**9,876
Apple IncCommon StockN/AN/AN/A**9,627
Ares management Corporation CL A Com STKCommon StockN/AN/AN/A**11,297
Bank America Corp ComCommon StockN/AN/AN/A**11,785
Blackrock Inc Com USDCommon StockN/AN/AN/A**8,118
Boeing CoCommon StockN/AN/AN/A**10,426
Bristol-Myers Sqibb Co ComCommon StockN/AN/AN/A**4,361
Chesapeake Energy Corp ComCommon StockN/AN/AN/A**5,386
Cisco Systems IncCommon StockN/AN/AN/A**9,094
Comcast CorpCommon StockN/AN/AN/A**7,674
Costco Wholesale Corp Com USDCommon StockN/AN/AN/A**9,901
Danaher Corporation ComCommon StockN/AN/AN/A**4,627
Deere and CoCommon StockN/AN/AN/A**5,998
Disney Walt Co ComCommon StockN/AN/AN/A**5,417
Elton corporation PLCCommon StockN/AN/AN/A**6,021
Goldman Sachs group Inc Com USDCommon StockN/AN/AN/A**9,644
Home Depot IncCommon StockN/AN/AN/A**8,664
Honeywell International Inc Com USDCommon StockN/AN/AN/A**5,243
Jacobs solutions Inc ComCommon StockN/AN/AN/A**4,543
Johnson and Johnson Com USDCommon StockN/AN/AN/A**7,837
JPMorgan Chase and CoCommon StockN/AN/AN/A**8,505
Kinder Morgan Inc Com USDCommon StockN/AN/AN/A**4,586
Lam Research Corp Com USDCommon StockN/AN/AN/A**11,749
Medtronic PLCCommon StockN/AN/AN/A**4,119
Merck and Co Inc ComCommon StockN/AN/AN/A**5,451
Meta Platforms Inc Class A Common StockCommon StockN/AN/AN/A**8,849
Microsoft CorpCommon StockN/AN/AN/A**18,802
Northrop Grumman Corp Com USDCommon StockN/AN/AN/A**7,022
Pepsico IncCommon StockN/AN/AN/A**6,794
14

Table of Contents

Pioneer natural Resources Co Com Common StockN/AN/AN/A**6,746
Prudential Financial IncCommon StockN/AN/AN/A**8,815
Qualcomm IncCommon StockN/AN/AN/A**8,678
Regeneron Pharmaceuticals IncCommon StockN/AN/AN/A**4,391
Rockwell Automation Inc Com USDCommon StockN/AN/AN/A**9,314
Salesforce Inc ComCommon StockN/AN/AN/A**5,263
Ulta Beauty Inc ComCommon StockN/AN/AN/A**7,350
Veralto Corp Com SHSCommon StockN/AN/AN/A**905
Verizon Communications IncCommon StockN/AN/AN/A**5,467
Visa IncCommon StockN/AN/AN/A**6,509
Vontier Corporation ComCommon StockN/AN/AN/A**9,156
Ishares TR Ishares Semicdtr Common StockN/AN/AN/A**8,642
$360,155
Corporate Bonds
Goldman Sachs group Inc MTNCorporate Bond70,0004.000%3/3/2024**$69,796
Morgan Stanley MTN Corporate Bond100,0003.875%4/29/2024**99,462
Toronto Dominion Bank SER C MTN Corporate Bond100,0002.650%6/12/2024**98,748
Toyota MTR CR Corp MTNCorporate Bond100,0000.500%6/14/2024**97,750
Abbvie Inc SER B NoteCorporate Bond100,0003.850%6/15/2024**99,207
American Express Co NoteCorporate Bond50,0002.500%7/30/2024**49,119
Morgan Stanley MTNCorporate Bond110,0005.000%11/24/2025**109,837
Altria Group Inc Corporate Bond120,0004.400%2/14/2026**118,878
Gilead Sciences Inc Corporate Bond115,0003.650%3/1/2026**112,667
Bank of America Corp MTNCorporate Bond100,0004.450%3/3/2026**98,899
The Cigna Group Corporate Bond115,0001.250%3/15/2026**106,569
Oracle Corp Corporate Bond125,0001.650%3/25/2024**116,610
Citigroup IncCorporate Bond115,0003.400%5/1/2026**110,968
Ebay Inc Corporate Bond50,0001.400%5/10/2026**46,281
Abbive Inc Corporate Bond115,0003.200%5/14/2026**111,456
Capital One Finl Corp NoteCorporate Bond100,0003.750%7/28/2026**95,766
General Electric Co MTNCorporate Bond50,0004.650%8/15/2026**49,135
Morgan Stanley MTNCorporate Bond75,0004.350%9/8/2026**73,603
Allstate Corp Corporate Bond50,0003.280%12/15/2026**48,216
Bank of America Corp BondCorporate Bond100,0006.875%1/15/2028**106,669
Halliburton Co Corporate Bond60,0002.920%3/1/2030**53,956
Sysco Corp Corporate Bond50,0005.950%4/1/2030**53,142
Cencora IncCorporate Bond70,0002.800%5/15/2030**62,761
$1,989,495
15

Table of Contents

Interest bearing cash
*Truist BankInterest-bearing cash**$115,444
*Participant Loans2.38%-8.50%$—$9,710,819
Total Assets$12,175,913

*Denotes a party-in-interest
**Column (d) cost information not required as accounts are participant directed


See Report of Independent Registered Public Accounting Firm
16

Table of Contents

Pursuant to the requirements of the Securities Exchange Act of 1934, the 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.

A. O. Smith Retirement Security Plan
/s/ Tracey Seymour
Dated: June 27, 2024Tracey Seymour
Retirement and Payroll Manager


17
Document

EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in Registration Statement No. 333-05799 on Form S-8 of our report dated June 27, 2024, appearing in this Annual Report on Form 11-K of the A.O. Smith Retirement Security Plan for the year ended December 31, 2023.

/s/ Reilly, Penner & Benton LLP

Reilly, Penner & Benton LLP
Milwaukee, Wisconsin
June 27, 2024