🕵️ Transocean Ltd. ($RIG)
SEC insider & ownership activity, last 12 months · CIK 1451505 · every row links its SEC filing
Over the last 12 months insiders sold $5.6M against $54.9M of open-market buying. Mohn Frederik Wilhelm bought $18.2M in discretionary trades (Sep–Nov). Frederik W. Mohn trimmed 10.1% → 8.8%. No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
4 buyers, $54.9M (7 lots) · 5 sellers, $5.6M (14 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Mohn Frederik Wilhelm | 2 | $18.2M | 0 | – | Nov 24, 2025 |
| Perestroika As | 2 | $18.2M | 0 | – | Nov 24, 2025 |
| Perestroika (CYPRUS) Ltd | 2 | $18.2M | 0 | – | Nov 24, 2025 |
| Jeremy D. Thigpen | 0 | – | 1 | $2.2M | Nov 26, 2025 |
| Brady Long | 0 | – | 4 | $1.6M | May 21, 2026 |
| Keelan Adamson | 0 | – | 5 | $870K | Jan 27, 2026 |
| Roderick J MacKenzie | 0 | – | 3 | $863K | Mar 4, 2026 |
| Chad C. Deaton | 1 | $173K | 0 | – | Jul 2, 2026 |
| Robert T Vayda | 0 | – | 1 | $129K | Nov 26, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Perestroika As | 10.1% | 13D | Sep 30, 2025 | filing ↗ | |
| Perestroika (CYPRUS) Ltd | 10.1% | 13D | Sep 30, 2025 | filing ↗ | |
| Perestroika As | 8.8% | 13D | Feb 9, 2026 | filing ↗ | |
| Perestroika (CYPRUS) Ltd | 8.8% | 13D | Feb 9, 2026 | filing ↗ | |
| Frederik W. Mohn | 8.8% | 13D | Feb 9, 2026 | filing ↗ | |
| Blackrock, Inc. | 6.4% | 13G | Apr 23, 2025 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Brady Long | $609K | May 21, 2026 | filing ↗ |
| Roderick J MacKenzie | $498K | Mar 4, 2026 | filing ↗ |
| Brady Long | $557K | Jan 26, 2026 | filing ↗ |
| Keelan Adamson | $394K | Jan 26, 2026 | filing ↗ |
| Keelan Adamson | $296K | Dec 4, 2025 | filing ↗ |
| Roderick J MacKenzie | $157K | Dec 3, 2025 | filing ↗ |
| Jeremy D. Thigpen | $2.2M | Nov 26, 2025 | filing ↗ |
| Robert T Vayda | $129K | Nov 26, 2025 | filing ↗ |
| Roderick J MacKenzie | $207K | Oct 31, 2025 | filing ↗ |
| Keelan Adamson | $159K | Oct 24, 2025 | filing ↗ |
| Brady Long | $378K | Oct 24, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Reg FD disclosure (7.01) | Jun 29, 2026 | filing ↗ |
| Other events (8.01) | Jun 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 29, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 16, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | May 22, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | May 22, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 22, 2026 | filing ↗ |
| Material agreement (1.01) | May 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 19, 2026 | filing ↗ |
| Earnings (2.02) | May 4, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 4, 2026 | filing ↗ |
| Other events (8.01) | May 4, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 16, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 14, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 14, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 2, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 23, 2026 | filing ↗ |
| Earnings (2.02) | Feb 19, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 19, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 11, 2026 | filing ↗ |
| Material agreement (1.01) | Feb 9, 2026 | filing ↗ |
| Other events (8.01) | Feb 9, 2026 | filing ↗ |