[8-K] ATI INC Reports Material Event

Rhea-AI Filing Summary

ATI Inc. announced a leadership transition in its board of directors. The company’s President and Chief Executive Officer, Kimberly A. Fields, has been appointed to become Board Chair effective May 14, 2026, at ATI’s Annual Meeting of Stockholders. On that date, Robert S. Wetherbee, who currently serves as Executive Chairman, will retire from his role and leave the Board. ATI also issued a press release on November 18, 2025 providing additional details about this planned change.

Insights

Corporate governance analyst

ATI combines CEO and board chair roles as its executive chairman retires.

ATI Inc. is planning a governance shift where its current President and CEO, Kimberly A. Fields, will also serve as Board Chair starting on May 14, 2026. This follows the planned retirement of Executive Chairman Robert S. Wetherbee from both his chair role and board membership. The change consolidates leadership at both the management and board levels in a single individual.

This structure can streamline decision-making because the same person leads management and the board, but it also reduces the separation between oversight and day-to-day leadership. The company highlights the transition as a scheduled event tied to its Annual Meeting of Stockholders, which signals an orderly succession rather than an abrupt leadership change.

Investors may focus on how the board maintains independent oversight once the CEO becomes chair, such as through lead independent directors or committee structures, which would typically be described in future proxy or governance disclosures around the 2026 annual meeting.

ATI INC false 0001018963 0001018963 2025-11-18 2025-11-18

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

FAQ

What leadership change did ATI (ATI) announce on November 18, 2025?

ATI announced that its President and Chief Executive Officer, Kimberly A. Fields, has been appointed to become Board Chair effective May 14, 2026, at the company’s Annual Meeting of Stockholders.

When will Kimberly A. Fields become Board Chair of ATI (ATI)?

Kimberly A. Fields is scheduled to become ATI’s Board Chair on May 14, 2026, coinciding with the company’s Annual Meeting of Stockholders.

What is happening to ATI’s current Executive Chairman Robert S. Wetherbee?

Robert S. Wetherbee, ATI’s current Executive Chairman, will retire as Executive Chairman and as a member of the Board effective May 14, 2026.

Will ATI’s CEO continue in her current role after becoming Board Chair?

Yes. The filing states that Kimberly A. Fields, ATI’s President and Chief Executive Officer, has been appointed to become Board Chair, indicating she will hold both the CEO and chair roles after May 14, 2026.

Did ATI issue a press release about the board leadership changes?

Yes. ATI issued a press release dated November 18, 2025 describing these leadership and board changes, which is included as Exhibit 99.1 to the Form 8-K.

What stock exchange is ATI (ATI) listed on and under what symbol?

ATI’s common stock is listed on the New York Stock Exchange under the trading symbol ATI.