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 |
|---|---|---|---|
| 424B5 | Prospectus supplement | Jun 4, 2026 | — |
| FWP | Free writing prospectus | Jun 3, 2026 | — |
| 424B3 | Prospectus | Jun 3, 2026 | — |
| S-3ASR | Automatic shelf registration | Feb 23, 2024 | — |
| 424B5 | Prospectus supplement | Aug 8, 2023 | — |
| FWP | Free writing prospectus | Aug 7, 2023 | — |
| 424B3 | Prospectus | Aug 7, 2023 | — |
| S-8 POS | Filing | Jun 8, 2022 | — |
| S-8 | Employee stock plan registration | Jun 8, 2022 | — |
| 424B5 | Prospectus supplement | Sep 10, 2021 | — |
| FWP | Free writing prospectus | Sep 9, 2021 | — |
| 424B3 | Prospectus | Sep 8, 2021 | — |
| S-3ASR | Automatic shelf registration | Mar 31, 2021 | — |
| S-8 POS | Filing | May 11, 2020 | — |
| S-8 | Employee stock plan registration | May 11, 2020 | — |
| 424B5 | Prospectus supplement | Nov 21, 2019 | — |
| FWP | Free writing prospectus | Nov 19, 2019 | — |
| 424B3 | Prospectus | Nov 19, 2019 | — |
| S-3ASR | Automatic shelf registration | Apr 30, 2018 | — |
| 424B5 | Prospectus supplement | Nov 9, 2017 | — |
| 424B3 | Prospectus | Nov 7, 2017 | — |
| S-8 POS | Form s-8 pos | May 12, 2017 | — |
| S-8 | Employee stock plan registration | May 12, 2017 | — |
| 424B5 | Prospectus supplement | May 19, 2016 | — |
| FWP | Free writing prospectus | May 19, 2016 | — |
| 424B3 | Prospectus | May 17, 2016 | — |
| S-8 POS | Filing | Dec 18, 2015 | — |
| S-3ASR | Automatic shelf registration | May 15, 2015 | — |
| S-8 POS | Filing | May 1, 2015 | — |
| S-8 | Employee stock plan registration | May 1, 2015 | — |
Showing 30 filings. 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.