# EDGAR Filing Document

**Accession Number:** 0001018963
**File Stem:** 0001193125-26-121346
**Filing Date:** 2026-3
**Character Count:** 1314
**Document Hash:** 0013444db49381ea42716b954b033478
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-121346.hdr.sgml**: 20260324

**ACCESSION NUMBER**: 0001193125-26-121346

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251228

**FILED AS OF DATE**: 20260324

**DATE AS OF CHANGE**: 20260324

**EFFECTIVENESS DATE**: 20260324

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ATI INC
- **CENTRAL INDEX KEY:** 0001018963
- **STANDARD INDUSTRIAL CLASSIFICATION:** STEEL PIPE & TUBES [3317]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 251792394
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1228

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-12001
- **FILM NUMBER:** 26785252

**BUSINESS ADDRESS:**
- **STREET 1:** 2021 MCKINNEY AVENUE
- **CITY:** DALLAS
- **STATE:** TX
- **ZIP:** 75201
- **BUSINESS PHONE:** 4123942800

**MAIL ADDRESS:**
- **STREET 1:** 2021 MCKINNEY AVENUE
- **CITY:** DALLAS
- **STATE:** TX
- **ZIP:** 75201

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ALLEGHENY TECHNOLOGIES INC
- **DATE OF NAME CHANGE:** 19991213

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ALLEGHENY TELEDYNE INC
- **DATE OF NAME CHANGE:** 19960716

### Attached PDF Documents

**Attachment 1:** `d933268dars.pdf`

_No text found in this document._