# ATI Inc: filings

ATI · NYSE · CIK 1018963 · [Materials](/sectors/materials.md) · fiscal year ends Dec 28

Pages: [Overview](/companies/ati.md) · [Financials](/companies/ati/financials.md) · [Filings](/companies/ati/filings.md) · [Insiders](/companies/ati/insiders.md)

## Reports and events: 389 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 628, 8-K 296, 11-K 92, SC 13G/A 62, 144 56, 10-Q 54, 3 30, SC 13G 26, UPLOAD 24, CORRESP 20, DEFA14A 19, 10-K 18, DEF 14A 18, SD 12, 424B5 11, 4/A 11, ARS 11, SCHEDULE 13G/A 11, FWP 9, 424B3 8, S-8 7, 425 6, S-3ASR 6, S-8 POS 6, S-4/A 4, 424B2 3, 8-K/A 2, PRE 14A 2, SCHEDULE 13G 2, 10-Q/A 1, 305B2 1, 5 1, EFFECT 1, NO ACT 1, S-4 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-29 | 14:16 ET | [10-Q](/filings/0001628280-26-068145.md) | Quarterly report, period 2026-09-27 | 0001628280-26-068145 |
| 2026-10-29 | 07:34 ET | [8-K](/filings/0001018963-26-000004.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001018963-26-000004 |
| 2026-08-06 | 15:36 ET | [10-Q](/filings/0001628280-26-054233.md) | Quarterly report, period 2026-06-28 | 0001628280-26-054233 |
| 2026-08-06 | 07:40 ET | [8-K](/filings/0001628280-26-053856.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-053856 |
| 2026-06-08 | 16:15 ET | [8-K](/filings/0001193125-26-261769.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-261769 |
| 2026-06-03 | 17:12 ET | [8-K](/filings/0001193125-26-255755.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-255755 |
| 2026-06-03 | 08:47 ET | [8-K](/filings/0001193125-26-254681.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-254681 |
| 2026-05-19 | 16:05 ET | [8-K](/filings/0001193125-26-230739.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001193125-26-230739 |
| 2026-04-30 | 11:52 ET | [10-Q](/filings/0001628280-26-028684.md) | Quarterly report, period 2026-03-29 | 0001628280-26-028684 |
| 2026-04-30 | 07:33 ET | [8-K](/filings/0001628280-26-028589.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-028589 |
| 2026-03-24 | 13:09 ET | [DEF 14A](/filings/0001193125-26-121340.md) | Proxy statement, period 2026-05-14 | 0001193125-26-121340 |
| 2026-02-20 | 15:06 ET | [10-K](/filings/0001628280-26-010140.md) | Annual report, period 2025-12-28 | 0001628280-26-010140 |
| 2026-02-19 | 08:08 ET | [8-K](/filings/0001193125-26-058142.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-058142 |
| 2026-02-03 | 07:37 ET | [8-K](/filings/0001628280-26-004793.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-004793 |
| 2025-12-08 | 08:56 ET | [8-K](/filings/0001193125-25-310681.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-25-310681 |
| 2025-11-18 | 08:41 ET | [8-K](/filings/0001193125-25-285373.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-25-285373 |
| 2025-10-28 | 13:41 ET | [10-Q](/filings/0001628280-25-046675.md) | Quarterly report, period 2025-09-28 | 0001628280-25-046675 |
| 2025-10-28 | 07:45 ET | [8-K](/filings/0001628280-25-046559.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-25-046559 |
| 2025-09-25 | 16:58 ET | [8-K](/filings/0001193125-25-217804.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-25-217804 |
| 2025-09-10 | 07:39 ET | [8-K](/filings/0001193125-25-199688.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-25-199688 |
| 2025-07-31 | 15:19 ET | [10-Q](/filings/0001628280-25-036963.md) | Quarterly report, period 2025-06-29 | 0001628280-25-036963 |
| 2025-07-31 | 07:36 ET | [8-K](/filings/0001628280-25-036845.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-25-036845 |
| 2025-06-20 | 16:40 ET | [8-K](/filings/0001193125-25-143715.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation | 0001193125-25-143715 |
| 2025-05-21 | 16:06 ET | [8-K](/filings/0001193125-25-123974.md) | 5.03 Amendment to articles or bylaws; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001193125-25-123974 |
| 2025-05-01 | 14:36 ET | [10-Q](/filings/0001628280-25-021463.md) | Quarterly report, period 2025-03-30 | 0001628280-25-021463 |
| 2025-05-01 | 07:34 ET | [8-K](/filings/0001628280-25-021324.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-25-021324 |
| 2025-03-27 | 13:51 ET | [DEF 14A](/filings/0001193125-25-065233.md) | Proxy statement, period 2025-05-16 | 0001193125-25-065233 |
| 2025-02-21 | 15:40 ET | [10-K](/filings/0001628280-25-007092.md) | Annual report, period 2024-12-29 | 0001628280-25-007092 |
| 2025-02-04 | 07:36 ET | [8-K](/filings/0001628280-25-003579.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-25-003579 |
| 2024-10-29 | 13:59 ET | [10-Q](/filings/0001628280-24-044066.md) | Quarterly report, period 2024-09-29 | 0001628280-24-044066 |
| 2024-10-29 | 07:36 ET | [8-K](/filings/0001628280-24-044003.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-24-044003 |
| 2024-08-06 | 15:50 ET | [10-Q](/filings/0001628280-24-035141.md) | Quarterly report, period 2024-06-30 | 0001628280-24-035141 |
| 2024-08-06 | 07:35 ET | [8-K](/filings/0001628280-24-034973.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-24-034973 |
| 2024-05-20 | 17:08 ET | [8-K](/filings/0001193125-24-142966.md) | 5.07 Shareholder vote results | 0001193125-24-142966 |
| 2024-04-30 | 13:52 ET | [10-Q](/filings/0001628280-24-019285.md) | Quarterly report, period 2024-03-31 | 0001628280-24-019285 |
| 2024-04-30 | 07:34 ET | [8-K](/filings/0001628280-24-019185.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-24-019185 |
| 2024-03-28 | 15:01 ET | [DEF 14A](/filings/0001193125-24-080426.md) | Proxy statement, period 2024-05-16 | 0001193125-24-080426 |
| 2024-03-14 | 12:12 ET | [8-K](/filings/0001193125-24-067620.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-24-067620 |
| 2024-03-07 | 13:43 ET | [8-K](/filings/0001193125-24-061889.md) | 5.02 Departure or appointment of officers or directors | 0001193125-24-061889 |
| 2024-02-23 | 13:54 ET | [10-K](/filings/0001628280-24-006606.md) | Annual report, period 2023-12-31 | 0001628280-24-006606 |
| 2024-02-23 | 09:19 ET | [8-K](/filings/0001193125-24-043707.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-24-043707 |
| 2024-02-01 | 07:36 ET | [8-K](/filings/0001628280-24-002807.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-24-002807 |
| 2024-01-19 | 07:34 ET | [8-K](/filings/0001628280-24-001748.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-24-001748 |
| 2024-01-10 | 15:35 ET | [8-K](/filings/0001193125-24-005895.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-24-005895 |
| 2023-11-29 | 17:06 ET | [8-K](/filings/0001193125-23-285253.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-23-285253 |
| 2023-11-02 | 14:51 ET | [10-Q](/filings/0001628280-23-036343.md) | Quarterly report, period 2023-09-30 | 0001628280-23-036343 |
| 2023-11-02 | 07:56 ET | [8-K](/filings/0001628280-23-036216.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-23-036216 |
| 2023-10-18 | 08:10 ET | [8-K](/filings/0001193125-23-258092.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-23-258092 |
| 2023-08-11 | 16:15 ET | [8-K](/filings/0001193125-23-210742.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-23-210742 |
| 2023-08-07 | 17:20 ET | [8-K](/filings/0001193125-23-205092.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-23-205092 |

Page 1 of 8. [Older](/companies/ati/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 29, 2026, 14:24 ET. No prices; not investment advice.