RIG offering history
Every offering-related filing in Transocean Ltd.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,000 filings back to Apr 8, 2016.
| Date | Filing | What it means | |
|---|---|---|---|
| May 26, 2026 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Sep 26, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Sep 24, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Aug 19, 2025 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Aug 11, 2025 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Jul 22, 2025 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Jul 7, 2025 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Jun 20, 2025 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Jun 3, 2025 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Jul 1, 2024 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jun 28, 2024 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Jun 28, 2024 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Mar 6, 2024 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Oct 10, 2023 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Sep 29, 2023 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Sep 14, 2023 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Sep 1, 2023 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Apr 10, 2023 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Sep 30, 2022 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Sep 13, 2022 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Aug 5, 2022 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Mar 16, 2022 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Jun 14, 2021 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jun 14, 2021 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Apr 7, 2021 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Feb 26, 2021 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Sep 4, 2020 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Aug 14, 2020 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| May 11, 2020 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Oct 16, 2018 | 424B3 → | UPDATE | Prospectus update — often a resale registration, not necessarily new capital |
| Oct 16, 2018 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Jul 11, 2018 | 424B7 → | UPDATE | Resale prospectus — existing holders registering to sell |
| Mar 8, 2018 | 424B3 → | UPDATE | Prospectus update — often a resale registration, not necessarily new capital |
| Feb 21, 2018 | 424B3 → | UPDATE | Prospectus update — often a resale registration, not necessarily new capital |
| Feb 20, 2018 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Feb 6, 2018 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Feb 6, 2018 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jan 30, 2018 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Dec 26, 2017 | 424B3 → | UPDATE | Prospectus update — often a resale registration, not necessarily new capital |
| Dec 22, 2017 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
Two honest limits. (1) A 424B takedown can price shares or notes — EDGAR’s metadata doesn’t say which, so open the document: large investment-grade filers use these mostly for bond deals (no dilution), small-caps mostly for shares. (2) At-the-market (ATM) programs sell shares gradually and individual sales are not separately filed — the visible footprint is the enabling shelf and its 424B5; actual ATM share counts surface later in the 10-Q/10-K share count. Educational information from public filings, not investment advice.
RIG offering FAQ
When did RIG last execute an offering?
Per SEC filings, Transocean Ltd.'s most recent priced offering document is a 8-K filed 2026-05-26. Note a 424B takedown can price shares or notes (debt) — the linked document says which.
When did RIG last announce or register an offering?
The most recent registration is a S-3ASR filed 2024-07-01. A registration is capacity to sell shares — not a sale.
Does an offering always mean dilution?
Registered direct offerings and shelf takedowns issue new shares and dilute existing holders. Resale registrations (424B3/B7) let existing holders sell and do not create new shares. Secondary sales by insiders also do not dilute. Each row here is labeled with what it is.
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