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 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 28, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 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 |
| 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 | — |
| 8-K |
Current report
Shareholder vote results
|
May 19, 2026 | May 14, 2026 |
| 10-Q | Quarterly report | Apr 30, 2026 | Mar 29, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2026 | Apr 30, 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 |
| 10-K | Annual report | Feb 20, 2026 | Dec 28, 2025 |
| 8-K |
Current report
Other events
|
Feb 19, 2026 | Feb 18, 2026 |
| 8-K |
Current report
Results of operations
|
Feb 3, 2026 | Feb 3, 2026 |
| 8-K |
Current report
Officer or director change
|
Dec 8, 2025 | Dec 4, 2025 |
| 8-K |
Current report
Officer or director change
|
Nov 18, 2025 | Nov 18, 2025 |
| 10-Q | Quarterly report | Oct 28, 2025 | Sep 28, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2025 | Oct 28, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 25, 2025 | Sep 19, 2025 |
| 8-K |
Current report
Officer or director change
|
Sep 10, 2025 | Sep 9, 2025 |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 29, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2025 | Jul 31, 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 | — |
| 11-K | Employee savings plan report | Jun 13, 2025 | Dec 31, 2024 |
| 11-K | Employee savings plan report | Jun 13, 2025 | Dec 31, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 21, 2025 | May 15, 2025 |
| UPLOAD | Letter from the SEC | May 7, 2025 | — |
| 10-Q | Quarterly report | May 1, 2025 | Mar 30, 2025 |
| 8-K |
Current report
Results of operations
|
May 1, 2025 | May 1, 2025 |
| CORRESP | Letter to the SEC | Apr 22, 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 |
| UPLOAD | Letter from the SEC | Mar 14, 2025 | — |
| 10-K | Annual report | Feb 21, 2025 | Dec 29, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2025 | Feb 4, 2025 |
| 10-Q | Quarterly report | Oct 29, 2024 | Sep 29, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2024 | Oct 29, 2024 |
| 10-Q | Quarterly report | Aug 6, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2024 | Aug 6, 2024 |
| 11-K | Employee savings plan report | Jun 7, 2024 | Dec 31, 2023 |
| 11-K | Employee savings plan report | Jun 7, 2024 | Dec 31, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2024 | — |
| 8-K |
Current report
Shareholder vote results
|
May 20, 2024 | May 16, 2024 |
| 10-Q | Quarterly report | Apr 30, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2024 | Apr 30, 2024 |
| ARS | Annual report to shareholders | Mar 28, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 28, 2024 | — |
| DEF 14A | Proxy statement | Mar 28, 2024 | May 16, 2024 |
| 8-K |
Current report
Other events
|
Mar 14, 2024 | Mar 14, 2024 |
| 8-K |
Current report
Officer or director change
|
Mar 7, 2024 | Mar 7, 2024 |
| S-3ASR | Automatic shelf registration | Feb 23, 2024 | — |
| 10-K | Annual report | Feb 23, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 23, 2024 | Feb 23, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 1, 2024 | Feb 1, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jan 19, 2024 | Jan 19, 2024 |
| 8-K |
Current report
Officer or director change
|
Jan 10, 2024 | Jan 4, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 29, 2023 | Nov 29, 2023 |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Other events
|
Oct 18, 2023 | Oct 18, 2023 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Aug 11, 2023 | Aug 7, 2023 |
| 424B5 | Prospectus supplement | Aug 8, 2023 | — |
| 8-K |
Current report
Other events
|
Aug 7, 2023 | Aug 7, 2023 |
| FWP | Free writing prospectus | Aug 7, 2023 | — |
| 8-K |
Current report
Other events
|
Aug 7, 2023 | Aug 7, 2023 |
| 424B3 | Prospectus | Aug 7, 2023 | — |
| 10-Q | Quarterly report | Aug 2, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2023 | Aug 2, 2023 |
| 11-K | Employee savings plan report | Jun 9, 2023 | Dec 31, 2022 |
| 11-K | Employee savings plan report | Jun 9, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 6, 2023 | Jun 6, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
May 15, 2023 | May 11, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
May 4, 2023 | May 4, 2023 |
| DEFA14A | Additional proxy material | Mar 27, 2023 | — |
| ARS | Annual report to shareholders | Mar 24, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Mar 24, 2023 | — |
| DEF 14A | Proxy statement | Mar 24, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Mar 2, 2023 | Mar 1, 2023 |
| 10-K | Annual report | Feb 24, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 2, 2023 | Feb 2, 2023 |
| 10-Q | Quarterly report | Nov 3, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2022 | Nov 2, 2022 |
| 8-K/A |
Amended current report
Officer or director change
|
Oct 14, 2022 | Sep 22, 2022 |
| 8-K |
Current report
Officer or director change
|
Sep 22, 2022 | Sep 22, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 9, 2022 | Sep 9, 2022 |
| 10-Q | Quarterly report | Aug 4, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Officer or director change
|
Jul 8, 2022 | Jul 8, 2022 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Jun 22, 2022 | Jun 22, 2022 |
| 11-K | Employee savings plan report | Jun 9, 2022 | Dec 31, 2021 |
| 11-K | Employee savings plan report | Jun 9, 2022 | Dec 31, 2021 |
| S-8 POS | Filing | Jun 8, 2022 | — |
| S-8 | Employee stock plan registration | Jun 8, 2022 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2022 | — |
| 8-K |
Current report
Shareholder vote results
|
May 13, 2022 | May 12, 2022 |
| 10-Q | Quarterly report | May 4, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 4, 2022 | May 4, 2022 |
| DEFA14A | Additional proxy material | Apr 27, 2022 | — |
| UPLOAD | Letter from the SEC | Apr 11, 2022 | — |
| CORRESP | Letter to the SEC | Mar 30, 2022 | — |
| DEFA14A | Additional proxy material | Mar 25, 2022 | — |
| DEF 14A | Proxy statement | Mar 25, 2022 | May 12, 2022 |
| UPLOAD | Letter from the SEC | Mar 23, 2022 | — |
| 8-K |
Current report
Other events
|
Mar 9, 2022 | Mar 9, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 3, 2022 | Mar 3, 2022 |
| 10-K | Annual report | Feb 25, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 2, 2022 | Feb 2, 2022 |
| 10-Q | Quarterly report | Nov 2, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2021 | Oct 28, 2021 |
| 8-K |
Current report
Officer or director change
|
Oct 21, 2021 | Oct 21, 2021 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Sep 14, 2021 | Sep 9, 2021 |
| 424B5 | Prospectus supplement | Sep 10, 2021 | — |
| 8-K |
Current report
Other events
|
Sep 10, 2021 | Sep 9, 2021 |
| FWP | Free writing prospectus | Sep 9, 2021 | — |
| 8-K |
Current report
Other events
|
Sep 8, 2021 | Sep 8, 2021 |
| 424B3 | Prospectus | Sep 8, 2021 | — |
| 305B2 | Filing | Sep 8, 2021 | — |
| 8-K |
Current report
Other events
|
Aug 16, 2021 | Aug 16, 2021 |
| 10-Q | Quarterly report | Aug 3, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2021 | Aug 3, 2021 |
| 8-K |
Current report
Other events
|
Jul 6, 2021 | Jul 6, 2021 |
| 11-K | Employee savings plan report | Jun 10, 2021 | Dec 31, 2020 |
| 11-K | Employee savings plan report | Jun 10, 2021 | Dec 31, 2020 |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2021 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Regulation FD disclosure
|
May 21, 2021 | May 20, 2021 |
| 10-Q | Quarterly report | Apr 29, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2021 | Apr 29, 2021 |
| DEFA14A | Additional proxy material | Apr 5, 2021 | — |
| DEF 14A | Proxy statement | Apr 5, 2021 | May 20, 2021 |
| S-3ASR | Automatic shelf registration | Mar 31, 2021 | — |
| 8-K |
Current report
Officer or director change
|
Mar 2, 2021 | Mar 2, 2021 |
| 10-K | Annual report | Feb 26, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Jan 28, 2021 | Jan 28, 2021 |
| 8-K |
Current report
Exit or restructuring costs, Impairment, Officer or director change, Regulation FD disclosure
|
Dec 4, 2020 | Dec 2, 2020 |
| 8-K |
Current report
Officer or director change
|
Nov 24, 2020 | Nov 24, 2020 |
| 10-Q | Quarterly report | Oct 29, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2020 | Oct 29, 2020 |
| SD | Specialized disclosure (conflict minerals) | Oct 9, 2020 | — |
| 10-Q | Quarterly report | Aug 4, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2020 | Aug 4, 2020 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Jun 22, 2020 | Jun 22, 2020 |
| 8-K |
Current report
Other events
|
Jun 18, 2020 | Jun 17, 2020 |
| 8-K |
Current report
Other events
|
Jun 17, 2020 | Jun 17, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 16, 2020 | Jun 16, 2020 |
| 11-K | Employee savings plan report | Jun 5, 2020 | Dec 31, 2019 |
| 11-K | Employee savings plan report | Jun 5, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Other events
|
May 22, 2020 | May 22, 2020 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 12, 2020 | May 8, 2020 |
| S-8 POS | Filing | May 11, 2020 | — |
| S-8 | Employee stock plan registration | May 11, 2020 | — |
| 10-Q | Quarterly report | May 5, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 5, 2020 | May 5, 2020 |
| 8-K |
Current report
Officer or director change
|
Apr 21, 2020 | Apr 21, 2020 |
| DEFA14A | Additional proxy material | Apr 20, 2020 | — |
| DEFA14A | Additional proxy material | Apr 20, 2020 | — |
| DEFA14A | Additional proxy material | Apr 20, 2020 | — |
| DEFA14A | Additional proxy material | Mar 26, 2020 | — |
| DEF 14A | Proxy statement | Mar 24, 2020 | May 8, 2020 |
| 8-K |
Current report
Other events
|
Mar 17, 2020 | Mar 17, 2020 |
| 10-K | Annual report | Feb 25, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 5, 2020 | Feb 4, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2020 | Feb 4, 2020 |
| 8-K |
Current report
Officer or director change
|
Dec 23, 2019 | Dec 18, 2019 |
| 8-K |
Current report
Officer or director change
|
Dec 10, 2019 | Dec 4, 2019 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Nov 22, 2019 | Nov 19, 2019 |
| 424B5 | Prospectus supplement | Nov 21, 2019 | — |
| 8-K |
Current report
Other events
|
Nov 20, 2019 | Nov 19, 2019 |
| FWP | Free writing prospectus | Nov 19, 2019 | — |
| 424B3 | Prospectus | Nov 19, 2019 | — |
| 8-K |
Current report
Other events
|
Nov 19, 2019 | Nov 19, 2019 |
| 10-Q | Quarterly report | Nov 1, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2019 | Oct 31, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 3, 2019 | Sep 30, 2019 |
| 10-Q | Quarterly report | Aug 6, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Officer or director change
|
Aug 6, 2019 | Aug 6, 2019 |
| 8-K |
Current report
Results of operations
|
Jul 23, 2019 | Jul 23, 2019 |
| 8-K |
Current report
Other events
|
Jul 22, 2019 | Jul 22, 2019 |
| 8-K |
Current report
Other events
|
Jul 18, 2019 | Jul 18, 2019 |
| 11-K | Employee savings plan report | Jun 7, 2019 | Dec 31, 2018 |
| 11-K | Employee savings plan report | Jun 7, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Other events
|
Jun 4, 2019 | Jun 4, 2019 |
| 8-K |
Current report
Other events
|
Jun 3, 2019 | Jun 3, 2019 |
| 8-K |
Current report
Officer or director change
|
May 31, 2019 | May 31, 2019 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2019 | — |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 10, 2019 | May 10, 2019 |
| 10-Q | Quarterly report | Apr 30, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 24, 2019 | Apr 24, 2019 |
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.
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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.