[Form 4] SMITH A O CORP Insider Trading Activity

Rhea-AI Filing Summary

MAPES CHRISTOPHER L reported acquisition or exercise transactions in this Form 4 filing.

SMITH A O CORP director Christopher L. Mapes received a stock retainer and dividend shares rather than making an open‑market purchase. He was granted 2,262 shares of Common Stock as payment of his director retainer, valued using an average price of $66.32 per share on April 13, 2026.

After this grant, he directly owns 8,684 shares. He also indirectly holds 10,150 shares in joint tenancy with his wife, which include 145 shares received through the company’s Dividend Reinvestment Plan as quarterly dividends.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider MAPES CHRISTOPHER L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,262	$66.32	$150K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 8,684 shares (Direct); Common Stock — 10,150 shares (Indirect, Held in joint tenancy with his wife)

Footnotes (1)

1. Payment of retainer in stock under the A. O. Smith Corporation directors' compensation program based on the average of the high and low price of Common Stock on April 13, 2026. Mr. Mapes is a participant in the A. O. Smith Dividend Reinvestment Plan ('Plan") and receives a quarterly dividend pursuant to the Plan. The total amount of dividends received was 145 shares of Common Stock.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

MAPES CHRISTOPHER L

(Last) (First) (Middle)

A. O. SMITH CORPORATION

11270 WEST PARK PLACE

(Street)

MILWAUKEE WISCONSIN 53224

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SMITH A O CORP [ AOS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/13/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/13/2026		A		2,262(1)	A	$66.32	8,684(2)	D
Common Stock								10,150	I	Held in joint tenancy with his wife

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Payment of retainer in stock under the A. O. Smith Corporation directors' compensation program based on the average of the high and low price of Common Stock on April 13, 2026.

2. Mr. Mapes is a participant in the A. O. Smith Dividend Reinvestment Plan ('Plan") and receives a quarterly dividend pursuant to the Plan. The total amount of dividends received was 145 shares of Common Stock.

Remarks:

	James F. Stern, Attorney-in-Fact for Christopher L. Mapes	04/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)