Item 5. Other Information
Item 5. Other Information
Rule 10b5-1 Plan Elections
During the fiscal quarter ended March 29, 2026, Kimberly A. Fields , the Company’s President and Chief Executive Officer , entered into a pre-arranged stock trading plan on February 5, 2026 , which provides for the potential sale of up to 227,022 shares of the Company’s common stock between May 11, 2026 and January 27, 2027 for her personal tax and estate planning purposes. This trading plan was entered into during an open insider trading window and is intended to satisfy the affirmative defense criteria articulated by Rule 10b5-1(c) under the Securities Exchange Act of 1934, as amended, as well as the Company’s policies and procedures pertaining to transactions in Company securities .
Item 6. Exhibits
(a) Exhibits
31.1 Certification of Chief Executive Officer required by Securities and Exchange Commission Rule 13a – 14(a) or 15d – 14(a) (filed herewith).
31.2 Certification of Chief Financial Officer required by Securities and Exchange Commission Rule 13a – 14(a) or 15d – 14(a) (filed herewith).
32.1 Certification pursuant to 18 U.S.C. Section 1350 (furnished herewith).
101.INS Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH Inline XBRL Taxonomy Extension Schema Document.
101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104 Cover Page Interactive Data File - the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
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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: April 30, 2026 By /s/ James Robert Foster
James Robert Foster
Senior Vice President, Finance and Chief Financial Officer
(Principal Financial Officer)
Date: April 30, 2026 By /s/ Michael B. Miller
Michael B. Miller
Vice President, Controller and Chief Accounting Officer
(Principal Accounting Officer)
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Text extracted from the filing as submitted to EDGAR. Formatting, tables and exhibits are simplified for reading; the original document is authoritative for anything you rely on.