ATI INC — All Filings
1,000 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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10-K
10-K/A
10-K405
10-K405/A
10-Q
10-Q/A
11-K
144
15-12G
3
305B2
4
4/A
424B2
424B3
424B5
425
5
8-A12B
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
EFFECT
FWP
NO ACT
PRE 14A
PRES14A
S-3
S-3/A
S-3ASR
S-4
S-4 POS
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-000736 | Mar 26, 2026 | — |
| 4 | 4 | 0001193125-26-121258 | Mar 24, 2026 | Mar 20, 2026 |
| DEF 14A | DEF 14A | 0001193125-26-121340 | Mar 24, 2026 | May 14, 2026 |
| ARS | ARS | 0001193125-26-121346 | Mar 24, 2026 | Dec 28, 2025 |
| DEFA14A | DEFA14A | 0001193125-26-121343 | Mar 24, 2026 | — |
| 144 | — | 0001193125-26-102468 | Mar 11, 2026 | — |
| 4 | 4 | 0001193125-26-102473 | Mar 11, 2026 | Mar 9, 2026 |
| 4 | 4 | 0001193125-26-089618 | Mar 3, 2026 | Mar 2, 2026 |
| 10-K | 10-K | 0001628280-26-010140 | Feb 20, 2026 | Dec 28, 2025 |
| 4 | 4 | 0001193125-26-059487 | Feb 19, 2026 | Nov 19, 2025 |
| 8-K | 8-K | 0001193125-26-058142 | Feb 19, 2026 | Feb 18, 2026 |
| 4 | 4 | 0001193125-26-059478 | Feb 19, 2026 | Feb 17, 2026 |
| 144 | — | 0001959173-26-001041 | Feb 17, 2026 | — |
| 144 | — | 0001959173-26-000794 | Feb 10, 2026 | — |
| 8-K | 8-K | 0001628280-26-004793 | Feb 3, 2026 | — |
| 3 | 3 | 0001193125-26-021288 | Jan 23, 2026 | Jan 1, 2026 |
| 4 | 4 | 0001193125-26-021290 | Jan 23, 2026 | Jan 5, 2026 |
| 4 | 4 | 0001193125-26-006552 | Jan 7, 2026 | Jan 5, 2026 |
| 4 | 4 | 0001193125-26-006557 | Jan 7, 2026 | Jan 5, 2026 |
| 4 | 4 | 0001193125-26-006562 | Jan 7, 2026 | Jan 5, 2026 |
| 4 | 4 | 0001193125-26-006554 | Jan 7, 2026 | Jan 5, 2026 |
| 4 | 4 | 0001193125-26-006570 | Jan 7, 2026 | Jan 5, 2026 |
| 4 | 4 | 0001193125-25-327281 | Dec 19, 2025 | Dec 2, 2025 |
| 144 | — | 0001959173-25-007840 | Dec 18, 2025 | — |
| 4 | 4 | 0001193125-25-313075 | Dec 9, 2025 | Dec 5, 2025 |
| 4 | 4 | 0001193125-25-313065 | Dec 9, 2025 | Dec 5, 2025 |
| 4 | 4 | 0001193125-25-313074 | Dec 9, 2025 | Dec 5, 2025 |
| 4 | 4 | 0001193125-25-313069 | Dec 9, 2025 | Dec 5, 2025 |
| 8-K | 8-K | 0001193125-25-310681 | Dec 8, 2025 | Dec 4, 2025 |
| 144 | — | 0001959173-25-007406 | Dec 2, 2025 | — |
| 4 | 4 | 0001193125-25-297818 | Nov 25, 2025 | — |
| 144 | — | 0001959173-25-007248 | Nov 25, 2025 | — |
| 4 | 4 | 0001193125-25-297808 | Nov 25, 2025 | Nov 21, 2025 |
| 4 | 4 | 0001193125-25-291536 | Nov 21, 2025 | Nov 19, 2025 |
| 4 | 4 | 0001193125-25-291542 | Nov 21, 2025 | Nov 19, 2025 |
| 4 | 4 | 0001193125-25-291548 | Nov 21, 2025 | Nov 19, 2025 |
| 144 | — | 0001959173-25-007174 | Nov 21, 2025 | — |
| 4 | 4 | 0001193125-25-290261 | Nov 20, 2025 | Nov 18, 2025 |
| 4 | 4 | 0001193125-25-290265 | Nov 20, 2025 | Nov 18, 2025 |
| 144 | — | 0001959173-25-007085 | Nov 18, 2025 | — |
| 144 | — | 0001959173-25-007082 | Nov 18, 2025 | — |
| 8-K | 8-K | 0001193125-25-285373 | Nov 18, 2025 | — |
| SCHEDULE 13G/A | — | 0001562230-25-000127 | Nov 13, 2025 | — |
| SCHEDULE 13G | — | 0001422849-25-000078 | Nov 13, 2025 | — |
| 144 | — | 0001959173-25-006880 | Nov 12, 2025 | — |
| 3 | 3 | 0001193125-25-278313 | Nov 12, 2025 | Nov 1, 2025 |
| 3 | 3 | 0001193125-25-278247 | Nov 12, 2025 | Nov 1, 2025 |
| 4 | 4 | 0001193125-25-278250 | Nov 12, 2025 | Nov 11, 2025 |
| 4 | 4 | 0001193125-25-266571 | Nov 5, 2025 | Nov 4, 2025 |
| 144 | — | 0001959173-25-006700 | Nov 4, 2025 | — |