SEC Form 4 · Updated Daily
RIG
— Transocean Ltd. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Perestroika | Director | 96,574,894 | 2025-11-24 | P |
| Perestroika (Cyprus) Ltd | 10%+ Owner · Director | 96,574,894 | 2025-11-24 | P |
| THIGPEN JEREMY D | Director · Officer | 2,614,548 | 2026-03-03 | F |
| Adamson Keelan | Director · Officer | 1,600,884 | 2026-05-04 | F |
| Long Brady K | Officer | 1,125,438 | 2026-05-21 | S |
| Vayda Robert Thaddeus | Officer | 352,635 | 2026-03-03 | F |
| Mackenzie Roderick James | Officer | 268,025 | 2026-03-04 | S |
| Pack Jason | Officer | 262,103 | 2026-03-03 | F |
| DEATON CHAD C | Director | 237,421 | 2026-07-02 | P |
| Mohn Frederik Wilhelm | Director | 78,904 | 2026-05-26 | F |
| Lacey William F. | Officer | 61,419 | 2026-05-26 | F |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-07-02 | DEATON CHAD C | Open-market buy | 35,000 | $4.95 | 237,421 |
| 2026-05-26 | Mohn Frederik Wilhelm | Tax withholding | 25,597 | $6.70 | 78,904 |
| 2026-05-26 | DEATON CHAD C | Tax withholding | 20,932 | $6.70 | 202,421 |
| 2026-05-26 | Lacey William F. | Tax withholding | 20,934 | $6.70 | 61,419 |
| 2026-05-22 | MERKSAMER SAMUEL J. | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | Barker Glyn Anthony | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | Curado Frederico F. | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | DELL'OSSO DOMENIC J JR | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | INTRIERI VINCENT J | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | CHANG VANESSA C L | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | Mohn Frederik Wilhelm | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | Mohn Frederik Wilhelm | Option exercise | 82,353 | $6.81 | 104,501 |
| 2026-05-22 | DEATON CHAD C | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | DEATON CHAD C | Option exercise | 82,353 | $6.81 | 223,353 |
| 2026-05-22 | Lacey William F. | Grant / award (derivative) | 30,435 | $0.00 | 30,435 |
| 2026-05-22 | Lacey William F. | Option exercise | 82,353 | $6.81 | 82,353 |
| 2026-05-21 | Long Brady K | Open-market sale | 81,741 | $7.45 | 1,125,438 |
| 2026-05-04 | Adamson Keelan | Tax withholding | 71,556 | $6.82 | 1,600,884 |
| 2026-05-01 | Adamson Keelan | Option exercise | 180,931 | $0.00 | 1,672,440 |
| 2026-03-04 | Mackenzie Roderick James | Open-market sale | 78,370 | $6.36 | 268,025 |
| 2026-03-03 | Mackenzie Roderick James | Tax withholding | 62,886 | $6.12 | 346,395 |
| 2026-03-03 | THIGPEN JEREMY D | Tax withholding | 245,556 | $6.12 | 2,614,548 |
| 2026-03-03 | Long Brady K | Tax withholding | 87,689 | $6.12 | 1,238,098 |
| 2026-03-03 | Pack Jason | Tax withholding | 27,962 | $6.12 | 262,103 |
| 2026-03-03 | Adamson Keelan | Tax withholding | 127,878 | $6.12 | 1,491,509 |
| 2026-03-03 | Vayda Robert Thaddeus | Tax withholding | 62,970 | $6.12 | 352,635 |
| 2026-03-01 | Mackenzie Roderick James | Option exercise | 70,876 | $6.25 | 409,281 |
| 2026-03-01 | Mackenzie Roderick James | Option exercise | 50,663 | $6.25 | 338,405 |
| 2026-03-01 | Mackenzie Roderick James | Option exercise | 34,924 | $6.25 | 287,742 |
| 2026-03-01 | THIGPEN JEREMY D | Option exercise | 171,821 | $6.25 | 2,860,104 |
| 2026-03-01 | THIGPEN JEREMY D | Option exercise | 245,640 | $6.25 | 2,688,283 |
| 2026-03-01 | THIGPEN JEREMY D | Option exercise | 193,518 | $6.25 | 2,442,643 |
| 2026-03-01 | Long Brady K | Option exercise | 98,406 | $6.25 | 1,325,787 |
| 2026-03-01 | Long Brady K | Option exercise | 66,993 | $6.25 | 1,227,381 |
| 2026-03-01 | Long Brady K | Option exercise | 52,778 | $6.25 | 1,160,388 |
| 2026-03-01 | Pack Jason | Option exercise | 32,324 | $6.25 | 290,065 |
| 2026-03-01 | Pack Jason | Option exercise | 2,901 | $6.25 | 257,741 |
| 2026-03-01 | Pack Jason | Option exercise | 19,210 | $6.25 | 254,840 |
| 2026-03-01 | Pack Jason | Option exercise | 15,134 | $6.25 | 235,630 |
| 2026-03-01 | Adamson Keelan | Option exercise | 146,048 | $6.25 | 1,619,387 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.