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Transocean Ltd.

RIG
Exchange
NYSE
Industry
Drilling Oil & Gas Wells
SEC CIK
0001451505

In the last 90 days, Transocean Ltd. insiders filed 1 open-market purchase and 0 sales; 539 institutions reported holding it in 13F filings for Q2 2026, worth $4.88B in total; superinvestors Pabrai Investment Funds and Elliott Investment Management hold it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Transocean Ltd. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
1 filing
1 insider, $173.3K in total
Open-market sells
0 filings
Insiders trading
1
Net value
+$173.3K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Transocean Ltd., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Transocean Ltd.
NameTitleLast reported holdingLast filingFilings, past year
Deaton Chad CDirector237,421Jul 7, 20262
Chang Vanessa C LDirector59,200May 27, 20261
Intrieri Vincent JDirector–May 27, 20261
Merksamer Samuel J.Director–May 27, 20261
Dell'Osso Domenic J JrDirector–May 27, 20261
Barker Glyn AnthonyDirector–May 27, 20261
Curado Frederico F.Director–May 27, 20261
Mohn Frederik WilhelmDirector78,904May 27, 20263
Lacey William F.Director61,419May 27, 20261
Long Brady KEVP & Chief Legal Officer1,125,438May 22, 20265
Adamson KeelanPRESIDENT AND CEO1,600,884May 5, 20266
Mackenzie Roderick JamesEVP, Chief Commercial Officer268,025Mar 5, 20265
Thigpen Jeremy DExecutive Chair2,614,548Mar 3, 20263
Vayda Robert ThaddeusEVP, Chief Financial Officer352,635Mar 3, 20263
Pack JasonSVP, Chief Accounting Officer262,103Mar 3, 20262
PerestroikaDirector96,574,894IndirectNov 25, 20252
Perestroika (Cyprus) LtdDirector96,574,894Nov 25, 20252
Oevrum MargarethDirector–May 17, 20240
Davis Howard EEVP, CAO & CIO1,427,231Mar 5, 20240
Tonnel David ASVP - CHIEF ACCOUNTING OFFICER727,088Mar 5, 20240
Mey Mark-Anthony LovellEVP & CFO1,595,750Mar 5, 20240
Muller Edward RDirector–May 15, 20230
de Saint Victor DianeDirector–May 17, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Nov 25, 2025 (view filing)Nov 241 dayMohn Frederik WilhelmDirectorPPurchaseRegistered Shares+1.50M$4.02+$6.03M+1.6%96.6M afterDuplicate filing
Nov 25, 2025 (view filing)Nov 241 dayPerestroika (Cyprus) LtdDirectorPPurchaseRegistered Shares+1.50M$4.02+$6.03M+1.6%96.6M afterDuplicate filing
Dec 1, 2025 (view filing)Nov 265 daysThigpen Jeremy DExecutive ChairSSaleRegistered Shares−500.0K$4.32−$2.16M−19.0%2.14M after
Dec 1, 2025 (view filing)Nov 265 daysVayda Robert ThaddeusEVP, Chief Financial OfficerSSaleRegistered Shares−30.0K$4.29−$128.7K−11.3%235.2K after
Dec 5, 2025 (view filing)Dec 32 daysMackenzie Roderick JamesEVP, Chief Commercial OfficerSSaleRegistered Shares−35.0K$4.48−$156.8K−14.2%212.1K after
Dec 8, 2025 (view filing)Dec 4-54 daysAdamson KeelanPRESIDENT AND CEOSSaleRegistered Shares−66.4K$4.50−$299.0K−4.8%1.30M after2 lots10b5-1
Jan 28, 2026 (view filing)Jan 26-272 daysLong Brady KEVP & Chief Legal OfficerSSaleRegistered Shares−115.4K$5.00−$576.9K−9.9%1.05M after2 lots10b5-1
Jan 28, 2026 (view filing)Jan 26-272 daysAdamson KeelanPRESIDENT AND CEOSSaleRegistered Shares−81.5K$5.00−$407.7K−6.3%1.22M after2 lots10b5-1
Mar 5, 2026 (view filing)Mar 41 dayMackenzie Roderick JamesEVP, Chief Commercial OfficerSSaleRegistered Shares−78.4K$6.36−$498.4K−22.6%268.0K after
May 22, 2026 (view filing)May 211 dayLong Brady KEVP & Chief Legal OfficerSSaleRegistered Shares−81.7K$7.45−$609.0K−6.8%1.13M after
Jul 7, 2026 (view filing)4:22 PM ETJul 25 daysDeaton Chad CDirectorPPurchaseRegistered Shares+35.0K$4.95+$173.3K+17.3%237.4K after