Transocean Ltd. — SCHEDULE 13D/A Filings
3 SCHEDULE 13D/A filings on record
This page lists all SCHEDULE 13D/A filings submitted to the SEC by Transocean Ltd. (RIG), sorted by most recent first. Each row links to the full filing on EdgarLookup. Transocean Ltd. has filed 3 SCHEDULE 13D/A documents with the SEC since 2015. To view all SEC filings by Transocean Ltd., see the full filings list.
All
10-K
10-K/A
10-Q
10-Q/A
144
144/A
25-NSE
3
3/A
4
4/A
424B3
424B5
424B7
425
5
8-A12B
8-K
8-K/A
8-K12G3
ARS
CORRESP
DEF 14A
DEFA14A
DEFC14A
DFAN14A
EFFECT
FWP
NO ACT
NT 10-K
PRE 14A
PRE 14C
PREC14A
PRER14A
PRRN14A
S-3ASR
S-4
S-4/A
S-4MEF
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-I
SC TO-I/A
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13D/A | — | 0001104659-26-013683 | Feb 11, 2026 | — |
| SCHEDULE 13D/A | — | 0001451505-25-000131 | Dec 4, 2025 | — |
| SCHEDULE 13D/A | — | 0001729638-25-000006 | Sep 30, 2025 | — |