ATI INC

For the period ended Sep 27, 2026. Filed Oct 29, 2026.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 27, 2026 · Filed Oct 29, 2026

ATI$184.85+5.2%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

See the whole filing, with its images and exhibits

Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

ATI INC.

(Registrant)

Date:	October 29, 2026	By	/s/ James Robert Foster
			James Robert Foster
			Senior Vice President, Finance and Chief Financial Officer(Principal Financial Officer)
Date:	October 29, 2026	By	/s/ Michael B. Miller
			Michael B. Miller
			Vice President, Controller and Chief Accounting Officer(Principal Accounting Officer)

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.