Current Report · Items 8.01, 9.01 · 8-K

ATI Inc.

ATINYSEEQUITYCurrent

Other Events

Item 8.01 Other Events. On June 3, 2026, ATI Inc. (the “Company”) announced the pricing of its offering of unsecured 5.875% Senior Notes due 2033 (the “Notes”). The Company’s press release announcing the pricing of its offering of the Notes is set forth in its entirety and filed as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Filed Jun 3, 2026Accepted Jun 3, 2026, 5:12 PM EDTCIK 1018963Accession 0001193125-26-255755

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Company context

Current securities

ATINYSE · EQUITY · Current

Recent company filings

Registered securities in this filing

ATI INC · 8-K · Filed 2026-06-03

As filed in this accession. Current/historical status below comes from the governed listing record; the cover itself remains exact to this filing.

Common Stock, par value $0.10 per share

Symbol: ATI
Exchange: NYSE
Classification: COMMON
Status: Current

Filing context

Context: duration_2026-06-03_to_2026-06-03

Dimensions: Not supplied

Accession 000119312526255755 · 1 registered-security cover member

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Disclosure sections

Items 8.01, 9.01

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Item 8.01Item 8.01 - Other Events

Filed exhibits (1)

EX-99.1 (by filename) d74245dex991.htm

EX-99.1 2 d74245dex991.htm EX-99.1 EX-99.1 Exhibit 99.1 ATI Inc. Investor Contact: Media Contact: Corporate Headquarters David Weston Natalie Gillespie Dallas, TX 75201 U.S.A. david.weston@ATImaterials.com natalie.gillespie@ATImaterials.com ─────────────────────────────────────────────────────────────────────────────────────────────────────────────── 2021 McKinney Avenue, Suite 1100 412.394.2908 412.389.3124 www. ATImaterials.com ATI Announces Pricing of Senior Notes Offering DALLAS, TX - (PR Newswire) - June 3, 2026 - ATI Inc. (NYSE: ATI) announced today that it has priced its public offering of senior notes. ATI has agreed to sell $450 million aggregate principal amount of 5.875% Senior Notes due 2033 (the “Notes”). The Notes will pay interest semi-annually in arrears at a rate of 5.875% per year and will mature on June 15, 2033, unless earlier redeemed or repurchased. ATI intends to use approximately $350 million of the net proceeds of the offering of the Notes to redeem all of its outstanding 5.875% Senior Notes due 2027 (the “2027…

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