Ati Inc SEC filings ATI
Ati Inc has 1,005 filings in SEC EDGAR's recent list, going back to May 5, 2014. Its latest annual report, Form ARS, was filed on Mar 24, 2026 for the period ended Dec 28, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 29, 2026, covering the quarter ended Sep 27, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (results of operations). The company's fiscal year ends on December 28.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Oct 29, 2026 | Sep 27, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2026 | Oct 29, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 27, 2026 | — |
| 4 | Insider transaction | Sep 23, 2026 | Sep 21, 2026 |
| 144 | Notice of proposed sale | Sep 21, 2026 | — |
| 4 | Insider transaction | Sep 16, 2026 | Sep 14, 2026 |
| 144 | Notice of proposed sale | Sep 14, 2026 | — |
| 4 | Insider transaction | Sep 10, 2026 | Sep 8, 2026 |
| 144 | Notice of proposed sale | Sep 8, 2026 | — |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 2, 2026 | Aug 31, 2026 |
| 144 | Notice of proposed sale | Sep 2, 2026 | — |
| 144 | Notice of proposed sale | Aug 31, 2026 | — |
| 4 | Insider transaction | Aug 26, 2026 | Aug 24, 2026 |
| 144 | Notice of proposed sale | Aug 24, 2026 | — |
| 4 | Insider transaction | Aug 19, 2026 | Aug 17, 2026 |
| 144 | Notice of proposed sale | Aug 17, 2026 | — |
| 144 | Notice of proposed sale | Aug 10, 2026 | — |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 28, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Jul 30, 2026 | Jul 28, 2026 |
| 144 | Notice of proposed sale | Jul 28, 2026 | — |
| 4 | Insider transaction | Jul 9, 2026 | Jul 8, 2026 |
| 144 | Notice of proposed sale | Jul 7, 2026 | — |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 22, 2026 |
| 144 | Notice of proposed sale | Jun 24, 2026 | — |
| 144 | Notice of proposed sale | Jun 23, 2026 | — |
| 144 | Notice of proposed sale | Jun 22, 2026 | — |
| 11-K | Employee savings plan report | Jun 17, 2026 | Dec 31, 2025 |
| 11-K | Employee savings plan report | Jun 17, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Jun 8, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 4, 2026 | Jun 2, 2026 |
| 424B5 | Prospectus supplement | Jun 4, 2026 | — |
| 8-K |
Current report
Other events
|
Jun 3, 2026 | Jun 3, 2026 |
| FWP | Free writing prospectus | Jun 3, 2026 | — |
| 8-K |
Current report
Other events
|
Jun 3, 2026 | Jun 3, 2026 |
| 424B3 | Prospectus | Jun 3, 2026 | — |
| 144 | Notice of proposed sale | Jun 2, 2026 | — |
| 144 | Notice of proposed sale | Jun 2, 2026 | — |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 19, 2026 | May 14, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2026 | — |
| 4 | Insider transaction | May 12, 2026 | May 11, 2026 |
| 144 | Notice of proposed sale | May 11, 2026 | — |
| 10-Q | Quarterly report | Apr 30, 2026 | Mar 29, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2026 | Apr 30, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 7, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| ARS | Annual report to shareholders | Mar 24, 2026 | Dec 28, 2025 |
| DEFA14A | Additional proxy material | Mar 24, 2026 | — |
| DEF 14A | Proxy statement | Mar 24, 2026 | May 14, 2026 |
| 4 | Insider transaction | Mar 24, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 4 | Insider transaction | Mar 3, 2026 | Mar 2, 2026 |
| 10-K | Annual report | Feb 20, 2026 | Dec 28, 2025 |
| 4 | Insider transaction | Feb 19, 2026 | Nov 19, 2025 |
| 4 | Insider transaction | Feb 19, 2026 | Feb 17, 2026 |
| 8-K |
Current report
Other events
|
Feb 19, 2026 | Feb 18, 2026 |
| 144 | Notice of proposed sale | Feb 17, 2026 | — |
| 144 | Notice of proposed sale | Feb 10, 2026 | — |
| 8-K |
Current report
Results of operations
|
Feb 3, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 5, 2026 |
| 3 | Initial insider ownership | Jan 23, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 2, 2025 |
| 144 | Notice of proposed sale | Dec 18, 2025 | — |
| 4 | Insider transaction | Dec 9, 2025 | Dec 5, 2025 |
| 4 | Insider transaction | Dec 9, 2025 | Dec 5, 2025 |
| 4 | Insider transaction | Dec 9, 2025 | Dec 5, 2025 |
| 4 | Insider transaction | Dec 9, 2025 | Dec 5, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 8, 2025 | Dec 4, 2025 |
| 144 | Notice of proposed sale | Dec 2, 2025 | — |
| 4 | Insider transaction | Nov 25, 2025 | Nov 25, 2025 |
| 4 | Insider transaction | Nov 25, 2025 | Nov 21, 2025 |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 4 | Insider transaction | Nov 21, 2025 | Nov 19, 2025 |
| 4 | Insider transaction | Nov 21, 2025 | Nov 19, 2025 |
| 4 | Insider transaction | Nov 21, 2025 | Nov 19, 2025 |
| 144 | Notice of proposed sale | Nov 21, 2025 | — |
| 4 | Insider transaction | Nov 20, 2025 | Nov 18, 2025 |
| 4 | Insider transaction | Nov 20, 2025 | Nov 18, 2025 |
| 144 | Notice of proposed sale | Nov 18, 2025 | — |
| 144 | Notice of proposed sale | Nov 18, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Nov 18, 2025 | Nov 18, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 13, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 13, 2025 | — |
| 3 | Initial insider ownership | Nov 12, 2025 | Nov 1, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 11, 2025 |
| 3 | Initial insider ownership | Nov 12, 2025 | Nov 1, 2025 |
| 144 | Notice of proposed sale | Nov 12, 2025 | — |
| 4 | Insider transaction | Nov 5, 2025 | Nov 4, 2025 |
| 144 | Notice of proposed sale | Nov 4, 2025 | — |
| 10-Q | Quarterly report | Oct 28, 2025 | Sep 28, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2025 | Oct 28, 2025 |
| 4 | Insider transaction | Oct 16, 2025 | Oct 15, 2025 |
| 144 | Notice of proposed sale | Oct 15, 2025 | — |
| 4 | Insider transaction | Oct 14, 2025 | Oct 10, 2025 |
| 4 | Insider transaction | Oct 8, 2025 | Oct 6, 2025 |
| 144 | Notice of proposed sale | Oct 6, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 3, 2025 | — |
| 8-K |
Current report
Material agreement, New debt
|
Sep 25, 2025 | Sep 19, 2025 |
| 4 | Insider transaction | Sep 23, 2025 | Sep 22, 2025 |
| 144 | Notice of proposed sale | Sep 22, 2025 | — |
| 4 | Insider transaction | Sep 10, 2025 | Sep 9, 2025 |
| 8-K |
Current report
Officer or director change
|
Sep 10, 2025 | Sep 9, 2025 |
| 144 | Notice of proposed sale | Sep 9, 2025 | — |
| 4 | Insider transaction | Aug 6, 2025 | Aug 4, 2025 |
| 4 | Insider transaction | Aug 6, 2025 | Aug 5, 2025 |
| 144 | Notice of proposed sale | Aug 5, 2025 | — |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 29, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2025 | Jul 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 17, 2025 | — |
| UPLOAD | Letter from the SEC | Jun 24, 2025 | — |
| 8-K |
Current report
Material agreement, New debt
|
Jun 20, 2025 | Jun 13, 2025 |
| CORRESP | Letter to the SEC | Jun 20, 2025 | — |
| 4 | Insider transaction | Jun 16, 2025 | Jun 12, 2025 |
| 11-K | Employee savings plan report | Jun 13, 2025 | Dec 31, 2024 |
| 11-K | Employee savings plan report | Jun 13, 2025 | Dec 31, 2024 |
| 144 | Notice of proposed sale | Jun 12, 2025 | — |
| 4 | Insider transaction | Jun 5, 2025 | Jun 3, 2025 |
| 144 | Notice of proposed sale | Jun 3, 2025 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 21, 2025 | May 15, 2025 |
| 144 | Notice of proposed sale | May 20, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 12, 2025 | — |
| 4 | Insider transaction | May 8, 2025 | May 6, 2025 |
| UPLOAD | Letter from the SEC | May 7, 2025 | — |
| 144 | Notice of proposed sale | May 6, 2025 | — |
| 10-Q | Quarterly report | May 1, 2025 | Mar 30, 2025 |
| 8-K |
Current report
Results of operations
|
May 1, 2025 | May 1, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 30, 2025 | — |
| CORRESP | Letter to the SEC | Apr 22, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 17, 2025 | — |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| ARS | Annual report to shareholders | Mar 27, 2025 | Dec 29, 2024 |
| DEFA14A | Additional proxy material | Mar 27, 2025 | — |
| DEF 14A | Proxy statement | Mar 27, 2025 | May 16, 2025 |
| 4 | Insider transaction | Mar 21, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 21, 2025 | Mar 20, 2025 |
| UPLOAD | Letter from the SEC | Mar 14, 2025 | — |
| 144 | Notice of proposed sale | Mar 13, 2025 | — |
| 10-K | Annual report | Feb 21, 2025 | Dec 29, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2025 | — |
| 4 | Insider transaction | Feb 7, 2025 | Feb 6, 2025 |
| 144 | Notice of proposed sale | Feb 6, 2025 | — |
| 8-K |
Current report
Results of operations
|
Feb 4, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Dec 6, 2024 | Dec 4, 2024 |
| 4 | Insider transaction | Dec 6, 2024 | Dec 4, 2024 |
| 144 | Notice of proposed sale | Dec 4, 2024 | — |
| 144 | Notice of proposed sale | Dec 4, 2024 | — |
| 4 | Insider transaction | Nov 18, 2024 | Nov 15, 2024 |
| 144 | Notice of proposed sale | Nov 15, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 8, 2024 | — |
| 10-Q | Quarterly report | Oct 29, 2024 | Sep 29, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2024 | Oct 29, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 23, 2024 | — |
| 4 | Insider transaction | Oct 18, 2024 | Oct 10, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 17, 2024 | — |
| 4 | Insider transaction | Oct 16, 2024 | Oct 15, 2024 |
| 144 | Notice of proposed sale | Oct 15, 2024 | — |
| 4 | Insider transaction | Sep 17, 2024 | Sep 16, 2024 |
| 144 | Notice of proposed sale | Sep 16, 2024 | — |
| 10-Q | Quarterly report | Aug 6, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2024 | Aug 6, 2024 |
| 144 | Notice of proposed sale | Jul 25, 2024 | — |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Steel Pipe & Tubes (SIC 3317)
- Listed as
- ATI (NYSE)
- Fiscal year ends
- December 28
- Incorporated in
- DE
- Headquarters
- Dallas, TX
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1018963
- Former names
- ALLEGHENY TECHNOLOGIES INC (until Jun 22, 2022); ALLEGHENY TELEDYNE INC (until Aug 25, 1999)
Other Steel Pipe & Tubes companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.