Welcome to our dedicated page for Allegheny Tech SEC filings (Ticker: ATI), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
ATI Inc. SEC filings document the reporting record for a NYSE-listed producer of high-performance materials, specialty alloys, components, and related solutions for aerospace and defense, specialty energy, electronics, medical, and other industrial applications. The filings identify the company's common stock, operating disclosures, segment-related performance measures, and risk and governance matters.
ATI's filings include Form 8-K reports for quarterly and annual operating results, share repurchase authorization, executive and board leadership matters, and material financing agreements, including an accounts receivable securitization facility involving ATI Specialty Materials. Proxy materials provide formal disclosure on director elections, executive compensation, shareholder voting matters, board structure, and corporate governance policies.
A holder of ATI common stock has filed a Form 144 notice to sell 2,598 shares through Fidelity Brokerage Services on the NYSE, with an aggregate market value of $242,289.48. The notice states that 135,863,661 shares of this class are outstanding.
The securities to be sold were acquired through restricted stock vesting from the issuer as compensation, including 1,781 shares on 01/04/2024 and 817 shares on 10/10/2024, both paid as compensation. By signing, the selling holder represents that they do not know of any undisclosed material adverse information about ATI's operations.
ATI Inc. executive chairman and director Robert S. Wetherbee reported open-market sales of common stock on 11/18/2025 on a Form 4 filing. The transactions were coded as sales and executed under a pre-arranged Rule 10b5-1 trading plan dated August 15, 2025 that was established for personal tax and estate planning purposes.
He sold 8,291 shares at a weighted average price of $97.20, 24,711 shares at a weighted average price of $98.21, and 26,998 shares at a weighted average price of $98.80, each in multiple trades within the stated price ranges. Following these transactions, he reported beneficial ownership of 246,538.3409 shares of ATI common stock.
ATI Inc. filed a Form 4 disclosing an insider stock sale by senior vice president and chief digital and information officer Timothy J. Harris. On 11/18/2025, Harris sold 10,542 shares of ATI common stock at a price of $97.77 per share in a transaction coded "S," which indicates a sale.
After this transaction, Harris beneficially owns 108,852 shares of ATI common stock in direct ownership. The filing notes that the shares were sold pursuant to a Rule 10b5-1 trading plan dated August 6, 2025, which is a pre-arranged plan for buying or selling company stock.
ATI filed a Form 144 notice indicating that an insider plans to sell 60,000 shares of ATI common stock through Fidelity Brokerage Services LLC, with sales expected to begin around November 18, 2025 on the NYSE. The planned sale has an aggregate market value of $5,866,200. These 60,000 shares were acquired as restricted stock that vested as compensation on January 6, 2025. ATI had 135,863,661 shares outstanding, providing context for the relative size of this proposed sale.
ATI reports that stockholder Timothy J. Harris filed a notice under Rule 144 to sell 10,542 shares of ATI common stock, with an aggregate market value of $1,030,691.34.
The shares to be sold were acquired through restricted stock vesting on January 9, 2024 as compensation from the issuer. ATI had 135,863,661 common shares outstanding, and the planned sale is listed for around November 18, 2025 on the NYSE through Fidelity Brokerage Services LLC. The filing also notes that Harris sold 10,543 common shares on November 4, 2025 for gross proceeds of $1,012,866.01 and another 10,543 shares on November 11, 2025 for $1,029,945.67.
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.
ATI Inc. disclosed that institutional investor Capital World Investors has filed a Schedule 13G reporting a passive ownership stake in ATI common stock. Capital World Investors is deemed to beneficially own 7,909,109 ATI shares, representing 5.7% of the class, based on 137,832,132 shares believed to be outstanding. The filing states that Capital World Investors has sole voting and sole dispositive power over all reported shares and no shared voting or dispositive power. The shares are reported as being acquired and held in the ordinary course of business and not for the purpose of changing or influencing control of ATI.
Capital International Investors filed an amended Schedule 13G reporting a significant passive stake in ATI Inc. as of 09/30/2025. The firm is deemed to beneficially own 17,638,463 shares of ATI common stock, representing 12.8% of the class.
The filer reports sole voting power over 17,610,082 shares and sole dispositive power over 17,638,463 shares, with no shared voting or dispositive power. The certification states the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.
ATI Inc. filed a Form 3, an initial statement of beneficial ownership, for a board member with an event date of 11/01/2025. The filing indicates the reporting person is a Director and states, “No securities are beneficially owned.”
This is a routine Section 16 disclosure that records insider status and current holdings at the time of becoming a reporting person.
ATI Inc. (ATI) filed a Form 4 reporting an insider sale. Senior VP and Chief Digital & Information Officer Timothy J. Harris sold 10,543 shares of common stock at $97.69 on 11/11/2025. Following the transaction, he beneficially owned 119,394 shares.
The filing notes the sale was made under a Rule 10b5-1 trading plan dated August 6, 2025, which pre‑arranges transactions. The ownership reported is direct.