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ATI Inc. Officer Files Form 144 Notice of Proposed Sale for $3.42M

Medium SignificanceSeptember 8, 2026 at 10:09:54 AM EDT

ATI INC

$ATI144CIK: 0001018963

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Filing Summary

Form 144 Notice of Proposed Sale: ATI INC ($ATI) Insider: Harris Timothy J (Officer) Shares Proposed for Sale: 16,500 Estimated Total Value: $3,424,410.00 (~$207.54/share) Broker: Fidelity Brokerage Services LLC Plan Adoption Date: 05/21/2026 Approximate Sale Date: 09/08/2026

Comprehensive Analysis

Executive Summary

On September 8, 2026, Timothy J. Harris, an Officer of ATI INC ($ATI), submitted a Form 144 filing declaring the intention to sell 16,500 shares of common stock with an estimated aggregate market value of $3,424,410.00.

Transaction Details

  • Filer: Timothy J. Harris (CIK: 0001776844)
  • Relationship: Officer
  • Securities Offered: 16,500 Common Shares
  • Approximate Market Value: $3,424,410.00 (~$207.54 per share)
  • Shares Outstanding: 136,170,383
  • Broker: Fidelity Brokerage Services LLC
  • Planned Sale Date: September 8, 2026
  • Plan Adoption Date: May 21, 2026 (Rule 10b5-1 trading plan)

Origin of Shares

The securities being sold were acquired directly from the issuer through restricted stock vesting events as equity compensation between January 2024 and January 2025:

  • 3,124 shares acquired on 01/03/2025
  • 4,209 shares acquired on 01/04/2025
  • 4,886 shares acquired on 01/06/2025
  • 4,281 shares acquired on 01/09/2024

Prior Sales in the Past 3 Months

  • 08/24/2026: 16,500 shares sold for gross proceeds of $3,414,180.00
  • 08/31/2026: 16,500 shares sold for gross proceeds of $3,465,165.00
Topics:#ATI#Form144#InsiderTrading#StockMarket#SEC

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