SCHEDULE: BlackRock Boosts ATI INC Stake to 10.1%

BlackRock, Inc. has disclosed an increased beneficial ownership of 10.1% in ATI INC, holding 13,891,604 common shares as of September 30, 2025.

Summary

• BlackRock, Inc. reported beneficial ownership of 13,891,604 shares of ATI INC Common Stock.
• This represents 10.1% of the class of securities.
• BlackRock holds sole voting power over 13,436,277 shares and sole dispositive power over 13,891,604 shares.
• The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of ATI INC.
• This filing is Amendment No. 6 to the Schedule 13G, indicating an update to a previously reported significant holding.
• BlackRock, Inc. is a Delaware-organized entity, with its principal business office at 50 Hudson Yards, New York, NY 10001.

Sentiment

Score: 5

Explanation: Neutral, as this is a routine disclosure of a passive ownership stake by a large institutional investor, without any specific positive or negative implications for the issuer's operations or financial performance.

Industry Context

BlackRock, as one of the world's largest asset managers, routinely files Schedule 13G reports to disclose its passive ownership stakes exceeding 5% in publicly traded companies. This filing reflects its ongoing investment activities and portfolio management across various sectors, consistent with its role as a major institutional investor.

Stakeholder Impact

• Shareholders: Provides transparency regarding a significant institutional holder's stake, which can be viewed as a sign of institutional confidence in the company's long-term prospects.
• Company Management: Awareness of a large, passive institutional investor holding a substantial portion of outstanding shares, which typically implies a stable shareholder base.

Key Dates

Keywords

BlackRock, ATI INC, Schedule 13G, Beneficial Ownership, Institutional Investor, Common Stock, Asset Management, SEC Filing, Equity Stake