Transocean (RIG)
Operates ultra-deepwater drillships and harsh-environment semisubmersibles for offshore oil and gas wells.
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13F · 13D/G · Form 4
| Institutions | ≈ 97.98% | 995.90M shares | |
|---|---|---|---|
| 590 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail | |||
| Insiders | 9.63% | 97.89M shares | |
| 7 holders · as of Jul 7, 2026 | |||
| Adds to | 107.61% | ||
1.02B company shares as of Sep 16, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
Two share counts disagree (1.12B in the company's Sep 23, 2026 report, 1.02B elsewhere); stakes use the report.
This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.
These groups come from separate filings that can overlap, so they add to 107.61%; nothing is left for Other.
13F, as of Jun 30, 2026
590 holders · 995.90M shares · 77 new positions · 261 increased · 167 reduced · 81 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 91.93M | 9.04% | +3.56M | Aug 7, 2026 |
| Dimensional Fund Advisors LP | 51.01M | 5.02% | +2.19M | Aug 11, 2026 |
| Vanguard Portfolio Management LLC | 49.30M | 4.85% | +2.43M | Aug 13, 2026 |
| Two Sigma Investments, LP | 46.21M | 4.55% | −258.4K | Aug 14, 2026 |
| Vanguard Capital Management LLC | 45.20M | 4.45% | +928.2K | Aug 13, 2026 |
| D. E. Shaw & Co., Inc. | 41.79M | 4.11% | +2.53M | Aug 14, 2026 |
| Slate Path Capital LP | 37.27M | 3.67% | +7.20M | Aug 14, 2026 |
| Capital World Investors | 30.97M | 3.05% | +1.40M | Aug 12, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Frederik W. Mohnincl. Perestroika (Cyprus) Ltd, Perestroika AS | 8.80% | 96.92M | 13D | Feb 11, 2026 |
| BlackRock, Inc. | 8.10% | 70.51M | Oct 22, 2024 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jul 2, 2026 | Chad C. Deatondirector | Purchase | 35,000 | $4.95 | 237,421 |
| May 21, 2026 | Brady K. Longofficer: EVP & Chief Legal Officer | Sale | 81,741 | $7.45 | 1,125,438 |
| Mar 4, 2026 | Roderick James Mackenzieofficer: EVP, Chief Commercial Officer | Sale | 78,370 | $6.36 | 268,025 |
| Jan 27, 2026 | Keelan Adamsondirector, officer: PRESIDENT AND CEO | Sale | 58,687 | $5.00 | 1,222,182 |
| Jan 26, 2026 | Keelan Adamsondirector, officer: PRESIDENT AND CEO | Sale | 22,846 | $5.00 | 1,280,869 |
| Jan 27, 2026 | Brady K. Longofficer: EVP & Chief Legal Officer | Sale | 99,293 | $5.00 | 1,046,031 |
| Jan 26, 2026 | Brady K. Longofficer: EVP & Chief Legal Officer | Sale | 16,085 | $5.00 | 1,145,324 |
| Dec 5, 2025 | Keelan Adamsondirector, officer: PRESIDENT AND CEO | Sale | 57,968 | $4.50 | 1,303,715 |
| Dec 4, 2025 | Keelan Adamsondirector, officer: PRESIDENT AND CEO | Sale | 8,469 | $4.50 | 1,361,683 |
| Dec 3, 2025 | Roderick James Mackenzieofficer: EVP, Chief Commercial Officer | Sale | 35,000 | $4.48 | 212,072 |
House and Senate disclosures
Not reported.