TETRA TECH INC — SC 13D/A Filings
1 SC 13D/A filing on record
This page lists all SC 13D/A filings submitted to the SEC by TETRA TECH INC (TTEK), sorted by most recent first. Each row links to the full filing on EdgarLookup. TETRA TECH INC has filed 1 SC 13D/A document with the SEC since 2014. To view all SEC filings by TETRA TECH INC, see the full filings list.
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 |
|---|---|---|---|---|
| SC 13D/A | AMENDED GENERAL STATEMENT OF BENEFICIAL OWNERSHIP | 0001006199-98-000079 | Feb 18, 1998 | — |