Transocean Ltd.
Transocean Ltd. (RIG) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · RIG · as of Sep 30, 2025
Ownership Breakdown
495
Institutional Holders
▲ 37 vs Q2
$2.34B
Total Inst. Value
▲ $781.37M vs Q2
903.24M
Shares Outstanding
freeFloat 81.80%
748.89M
13F Shares Held
▲ 148.35M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
RIG largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC drilling oil & gas wells | 94.52M | 10.64% | 10.64% | $294.90B | Nov 7, 2025 | ▲ 15.32M |
BLACKROCK, INC. drilling oil & gas wells | 85.21M | 9.60% | 9.60% | $265.86B | Nov 12, 2025 | ▲ 10.67M |
DIMENSIONAL FUND ADVISORS LP drilling oil & gas wells | 35.95M | 4.05% | 4.05% | $112.17B | Nov 12, 2025 | ▼ 2.95M |
PILGRIM GLOBAL ADVISORS LLC drilling oil & gas wells | 31.76M | 3.58% | 3.58% | $99.09B | Nov 14, 2025 | ▲ 14.16M |
AMERICAN CENTURY COMPANIES INC drilling oil & gas wells | 26.46M | 2.98% | 2.98% | $82.54B | Nov 12, 2025 | ▲ 3.01M |
DALAL STREET, LLC drilling oil & gas wells | 24.44M | 2.75% | 2.75% | $76.26B | Nov 13, 2025 | NEW |
MORGAN STANLEY drilling oil & gas wells | 22.65M | 2.55% | 2.55% | $70.68B | May 27, 2026 | ▲ 4.23M |
GOLDMAN SACHS GROUP INC drilling oil & gas wells | 21.95M | 2.47% | 2.47% | $68.49B | Nov 14, 2025 | ▲ 10.04M |
STATE STREET CORP drilling oil & gas wells | 21.87M | 2.46% | 2.46% | $68.23B | Nov 14, 2025 | ▲ 1.10M |
GEODE CAPITAL MANAGEMENT, LLC drilling oil & gas wells | 21.28M | 2.40% | 2.40% | $66.41B | Nov 12, 2025 | ▲ 3.19M |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
35
Increased
+117.23M shares6
New Positions
first time holders8
Decreased
−36.50M shares0
Sold Out
fully exitedNet shares change (top 50)
+80.73M
+117.23M / −36.50M
Net new holders
+33
6 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
RIG insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
13
Buy transactions
5
Sell transactions
2.60
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Lacey William F. director | May 26, 2026 | Tax Withhold | 20,934 | $6.70 | $140.3K | 61.4K | Form 4 ↗ |
Lacey William F. director | May 22, 2026 | Award | 30,435 | — | — | 30.4K | Form 4 ↗ |
DEATON CHAD C director | May 26, 2026 | Tax Withhold | 20,932 | $6.70 | $140.2K | 202.4K | Form 4 ↗ |
DEATON CHAD C director | May 22, 2026 | Award | 30,435 | — | — | 30.4K | Form 4 ↗ |
Mohn Frederik Wilhelm director | May 26, 2026 | Tax Withhold | 25,597 | $6.70 | $171.5K | 78.9K | Form 4 ↗ |
Mohn Frederik Wilhelm director | May 22, 2026 | Award | 30,435 | — | — | 30.4K | Form 4 ↗ |
CHANG VANESSA C L director | May 22, 2026 | Award | 30,435 | — | — | 30.4K | Form 4 ↗ |
INTRIERI VINCENT J director | May 22, 2026 | Award | 30,435 | — | — | 30.4K | Form 4 ↗ |
DELL'OSSO DOMENIC J JR director | May 22, 2026 | Award | 30,435 | — | — | 30.4K | Form 4 ↗ |
Curado Frederico F. director | May 22, 2026 | Award | 30,435 | — | — | 30.4K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Transocean Ltd. (RIG) is primarily owned by institutional investors, who hold approximately 82.9% of total shares outstanding. Company insiders own approximately 18.20%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Transocean Ltd. is VANGUARD GROUP INC, holding approximately 94.52 million shares — equal to 10.64% of outstanding shares — as of September 30, 2025.
A total of 495 institutional investors currently hold RIG stock, with a combined institutional value of approximately $2.34 billion as of the most recent 13F filing period.
Frequently asked questions
RIG ownershipTransocean Ltd. (RIG) is primarily owned by institutional investors, who hold approximately 82.9% of shares. The largest shareholder is VANGUARD GROUP INC with a 10.64% stake. Company insiders hold 18.20%. Data sourced from SEC Form 13F as of September 30, 2025.