TETRA TECH INC — All Filings
1,002 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.
All
10-C
10-K
10-K/A
10-Q
10-Q/A
144
3
3/A
4
4/A
424B1
424B2
424B3
424B4
5
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEF 14C
DEFA14A
DEFR14A
NT 10-K
NT 10-Q
POS AM
PRE 14A
PRER14C
S-3
S-3/A
S-3MEF
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-002432 | Mar 27, 2026 | — |
| 8-K | FORM 8-K | 0001104659-26-035179 | Mar 26, 2026 | — |
| 4 | FORM 4 | 0001592089-26-000004 | Mar 18, 2026 | Mar 16, 2026 |
| 4 | FORM 4 | 0001902712-26-000002 | Feb 20, 2026 | Feb 19, 2026 |
| 4 | FORM 4 | 0001721930-26-000003 | Feb 20, 2026 | Feb 19, 2026 |
| 8-K | FORM 8-K | 0001104659-26-018205 | Feb 20, 2026 | Feb 19, 2026 |
| 4 | FORM 4 | 0001628280-26-007775 | Feb 12, 2026 | Feb 10, 2026 |
| 4 | FORM 4 | 0001628280-26-006116 | Feb 6, 2026 | — |
| 4 | FORM 4 | 0001628280-26-006115 | Feb 6, 2026 | Feb 4, 2026 |
| 144 | — | 0001950047-26-000914 | Feb 4, 2026 | — |
| 10-Q | 10-Q | 0000831641-26-000005 | Jan 30, 2026 | Dec 28, 2025 |
| 8-K | FORM 8-K | 0001104659-26-007481 | Jan 28, 2026 | — |
| 4 | FORM 4 | 0001369458-26-000004 | Jan 28, 2026 | Jan 26, 2026 |
| 4 | FORM 4 | 0001584184-26-000002 | Jan 28, 2026 | Jan 26, 2026 |
| 4 | FORM 4 | 0001748476-26-000002 | Jan 14, 2026 | Jan 1, 2025 |
| 4 | FORM 4 | 0001592089-26-000002 | Jan 14, 2026 | Jan 12, 2026 |
| ARS | ARS | 0001104659-26-002474 | Jan 9, 2026 | Sep 28, 2025 |
| DEFA14A | DEFA14A | 0001104659-26-002470 | Jan 9, 2026 | — |
| DEF 14A | FORM DEF 14A | 0001104659-26-002458 | Jan 9, 2026 | Feb 19, 2026 |
| 3 | FORM 3 | 0001628280-26-001390 | Jan 8, 2026 | Dec 29, 2025 |
| 3 | FORM 3 | 0001628280-26-000976 | Jan 6, 2026 | Dec 29, 2025 |
| 8-K | FORM 8-K | 0001104659-26-001352 | Jan 6, 2026 | — |
| 8-K | FORM 8-K | 0001104659-25-123764 | Dec 22, 2025 | — |
| 4 | FORM 4 | 0000831641-25-000039 | Dec 3, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001582882-25-000005 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001450067-25-000005 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001902712-25-000006 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001728969-25-000006 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001927052-25-000005 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001561742-25-000003 | Dec 2, 2025 | Nov 18, 2025 |
| 4 | FORM 4 | 0001277150-25-000005 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001748476-25-000003 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001721930-25-000005 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001207854-25-000006 | Dec 2, 2025 | Nov 19, 2025 |
| 4 | FORM 4 | 0001207854-25-000004 | Nov 20, 2025 | Nov 18, 2025 |
| 4 | FORM 4 | 0001927052-25-000003 | Nov 20, 2025 | Nov 18, 2025 |
| 4 | FORM 4 | 0001721930-25-000003 | Nov 20, 2025 | Nov 18, 2025 |
| 4 | FORM 4 | 0001902712-25-000004 | Nov 20, 2025 | Nov 18, 2025 |
| 4 | FORM 4 | 0001450067-25-000003 | Nov 20, 2025 | Nov 18, 2025 |
| 4 | FORM 4 | 0001728969-25-000004 | Nov 20, 2025 | Nov 18, 2025 |
| 4 | FORM 4 | 0001277150-25-000003 | Nov 20, 2025 | Nov 18, 2025 |
| 4 | FORM 4 | 0001582882-25-000003 | Nov 20, 2025 | Nov 18, 2025 |
| 10-K | 10-K | 0000831641-25-000032 | Nov 20, 2025 | Sep 28, 2025 |
| 8-K | FORM 8-K | 0001104659-25-110537 | Nov 12, 2025 | — |
| SCHEDULE 13D/A | — | 0001361570-25-000021 | Oct 17, 2025 | — |
| 8-K | FORM 8-K | 0001104659-25-097567 | Oct 7, 2025 | — |
| 4 | FORM 4 | 0000831641-25-000026 | Aug 15, 2025 | Aug 14, 2025 |
| 144 | — | 0001950047-25-005801 | Aug 14, 2025 | — |
| 10-Q | 10-Q | 0000831641-25-000023 | Aug 1, 2025 | Jun 29, 2025 |
| 8-K | FORM 8-K | 0001104659-25-072237 | Jul 30, 2025 | — |