UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 18, 2025

ATI Inc.

(Exact name of registrant as specified in its charter)


Delaware	1-12001	25-1792394
(State or other jurisdiction	(Commission	(IRS Employer
of incorporation)	File Number)	Identification No.)

2021 McKinney Avenue, Dallas, Texas 75201

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code (412) 394-2800

N/A

(Former name or former address, if changed since last report).

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐

Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐

Pre-commencement communication pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement communication pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.10 per share	ATI	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

(b) On November 18, 2025, ATI Inc. (the “Company”) announced that its Board of Directors (the “Board”) has appointed Kimberly A. Fields, the Company’s President and Chief Executive Officer, to become Board Chair effective May 14, 2026, at the Company’s Annual Meeting of Stockholders. At that time, Robert S. Wetherbee, who currently serves as Executive Chairman, will retire as Executive Chairman and as a member of the Board.

The Company issued a press release on November 18, 2025 regarding these matters, which is attached as Exhibit 99.1 to this Form 8-K.

Item 9.01. Exhibit


(d)		Exhibit 99.1 Press release dated November 18, 2025.

104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

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 hereunto duly authorized.


ATI Inc.

By:		/s/: Vaishali S. Bhatia
		Vaishali S. Bhatia
		Senior Vice President, General Counsel and Chief Compliance Officer

Dated: November 18, 2025

ATI INC 8-K