Michael M. Larsen - 13 Apr 2026 Form 4 Insider Report for SMITH A O CORP (AOS)

Reporting relationship: Director
Issuer ticker: AOS
Reported as of: 13 Apr 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 15 Apr 2026, 14:52:12 UTC
Prior SEC filing: 17 Feb 2026
Source filing: View source filing
Reporting owner signature: James F. Stern, Attorney-in-Fact for Michael M. Larsen

Key filing fact

Michael M. Larsen filed Form 4 for SMITH A O CORP (AOS) on 15 Apr 2026.

Key facts

This page summarizes Michael M. Larsen's Form 4 filing for SMITH A O CORP (AOS).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 15 Apr 2026, 14:52.

Change

Previous filing in this sequence was filed on 17 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001503349 Primary reporting owner

Larsen Michael M

Relationship: Director
Address: A. O. SMITH CORPORATION, 11270 WEST PARK PLACE, MILWAUKEE
Signature: James F. Stern, Attorney-in-Fact for Michael M. Larsen
Signature date: 15 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AOS holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 11,425
Date: 13 Apr 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

AOS transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +2,262
Change %: +21%
Price: $66.32^*
Shares after: 13,284
Date: 13 Apr 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,262
Exercise price: $0.000000
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Payment of retainer in Restricted Stock Units under the A. O. Smith Nonqualified Deferred Compensation Plan based on the average of the high and the low price of Common Stock on April 13, 2026.

Footnote F2

The Plan permits the participant to defer the receipt of the award, and Mr. Larsen has made a deferral.

Footnote F3

The Restricted Stock Units receive a quarterly dividend pursuant to a dividend reinvestment feature of the A. O. Smith Nonqualified Deferred Compensation Plan. The total amount of the dividends received was 215 units of Restricted Stock Units.