Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001193125-26-380514
Filing Date
2026-09-02
Accepted
2026-09-02 17:41:16
Documents
1
Period of Report
2026-08-31

Document Format Files

Seq Description Document Type Size
1 4 ownership.html 4  
1 4 ownership.xml 4 3339
  Complete submission text file 0001193125-26-380514.txt   4903
Mailing Address 2021 MCKINNEY AVENUE DALLAS TX 75201
Business Address 2021 MCKINNEY AVENUE DALLAS TX 75201 4123942800
ATI INC (Issuer) CIK: 0001018963 (see all company filings)

EIN.: 251792394 | State of Incorp.: DE | Fiscal Year End: 1228
SIC: 3317 Steel Pipe & Tubes
(CF Office: 04 Manufacturing)

Mailing Address C/O ATI INC. 2021 MCKINNEY AVENUE DALLAS TX 75201
Business Address
Harris Timothy J (Reporting) CIK: 0001776844 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-12001 | Film No.: 261356113