Stephen D. O'Brien - 13 Feb 2026 Form 4 Insider Report for SMITH A O CORP (AOS)

Reporting relationship: SVP; Pres & General Mngr NAWH
Issuer ticker: AOS
Reported as of: 13 Feb 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 17 Feb 2026, 14:16:47 UTC
Prior SEC filing: 11 Feb 2026
Source filing: View source filing
Reporting owner signature: James F. Stern, Attorney-in-Fact for Stephen D. O'Brien

Key filing fact

Stephen D. O'Brien filed Form 4 for SMITH A O CORP (AOS) on 17 Feb 2026.

Key facts

This page summarizes Stephen D. O'Brien's Form 4 filing for SMITH A O CORP (AOS).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 17 Feb 2026, 14:16.

Change

Previous filing in this sequence was filed on 11 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 0001920307 Primary reporting owner

O'Brien Stephen D.

Relationship: SVP; Pres & General Mngr NAWH
Address: A. O. SMITH CORPORATION, 500 TENNESSEE WALTZ PARKWAY, ASHLAND CITY
Signature: James F. Stern, Attorney-in-Fact for Stephen D. O'Brien
Signature date: 17 Feb 2026

Reported non-derivative transactions

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

AOS transaction

Common Stock

Options Exercise

Transaction value: $0
Shares: +2,905
Change %: +73%
Price: $0.000000
Shares after: 6,863
Date: 13 Feb 2026
Ownership: Direct
Footnotes: F1, F2

AOS transaction

Common Stock

Tax liability

Transaction value: $0
Shares: -1,144
Change %: -17%
Price: $0.000000
Shares after: 5,719
Date: 13 Feb 2026
Ownership: Direct
Footnotes: F3

AOS transaction

Common Stock

Award

Transaction value: $0
Shares: +791
Change %: +14%
Price: $0.000000
Shares after: 6,510
Date: 13 Feb 2026
Ownership: Direct
Footnotes: F4

Reported derivative securities

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

AOS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -2,905
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 13 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,905
Exercise price: $0.000000
Footnotes: F1, F5

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Each restricted stock unit represents the right to receive, at settlement, one share of Common Stock. This transaction represents the settlement of restricted stock units in shares of Common Stock on their scheduled vesting date.

Footnote F2

Mr. O'Brien 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 59 shares of Common Stock.

Footnote F3

Shares withheld by A. O. Smith Corporation to satisfy tax withholding requirements on vesting of restricted stock units.

Footnote F4

Represents vesting of performance stock units at [100%] of the target award amount and conversion to shares of A. O. Smith Corporation's Common Stock upon achievement of performance criteria for the 2023 - 2025 performance period.

Footnote F5

The restricted stock units were granted on 02/13/2023 under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. The restricted stock units became payable in Common Stock on the vesting date of 02/13/2026.