David J. Morehouse - 02 Sep 2026 Form 4 Insider Report for ATI INC (ATI)

Reporting relationship: Director
Issuer ticker: ATI
Reported as of: 02 Sep 2026
Net transaction value: -$501,001
SEC form: 4
Accepted by SEC: 04 Sep 2026, 16:24:03 UTC
Prior SEC filing: 21 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Amanda J. Skov, Attorney-in-Fact for David J. Morehouse

Key filing fact

David J. Morehouse filed Form 4 for ATI INC (ATI) on 04 Sep 2026.

Key facts

This page summarizes David J. Morehouse's Form 4 filing for ATI INC (ATI).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 04 Sep 2026, 16:24.

Change

Previous filing in this sequence was filed on 21 May 2026.
Current net transaction value: -$501,001.

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 0001635153 Primary reporting owner

Morehouse David J

Relationship: Director
Address: C/O ATI INC., 2021 MCKINNEY AVENUE, SUITE 1100, DALLAS
Signature: /s/ Amanda J. Skov, Attorney-in-Fact for David J. Morehouse
Signature date: 04 Sep 2026

Reported non-derivative transactions

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

ATI transaction

Common Stock, par value $0.10 per share

Sale

Transaction value: $501,001
Shares: -2,485
Change %: -6.5%
Price: $201.61
Shares after: 35,826
Date: 02 Sep 2026
Ownership: Direct
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $201.56 to to $201.82. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.