Welcome to our dedicated page for Transocean SEC filings (Ticker: RIG), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
This Transocean Ltd. (NYSE: RIG) filings page brings together the company’s reports to the U.S. Securities and Exchange Commission, including Form 8-K current reports and references to its annual Form 10-K and other periodic filings. Transocean is a Swiss-incorporated offshore contract driller that focuses on ultra-deepwater and harsh environment services for oil and gas wells, and its SEC documents provide detailed insight into both operations and capital structure.
Recent Form 8-K filings describe material events such as contract awards and option exercises for rigs like Deepwater Atlas, Deepwater Mykonos, Deepwater Skyros, Transocean Enabler and Transocean Barents. These filings quantify the approximate additions to firm contract backlog and outline expected campaign durations and locations, giving investors a clearer view of future contracted activity.
Other 8-Ks focus on financing and capital markets transactions, including a private offering of Senior Priority Guaranteed Notes due 2032, cash tender offers for senior notes due 2041 and 2028, and an underwritten public offering of Transocean shares. These documents summarize key terms of new debt, tender offer conditions, early tender results and intended use of proceeds for debt repayment or redemption.
Transocean also uses Form 8-K to furnish quarterly financial results and to reference its earnings press releases and interactive data files formatted in Inline XBRL. The company’s disclosures note that additional risks and details are discussed in its Annual Report on Form 10-K and other SEC filings available on the SEC’s website.
On Stock Titan, AI-powered tools can help interpret these filings by highlighting contract-related disclosures, changes in backlog, new obligations under indentures, and the financial impact of tender offers and note issuances. Real-time updates from EDGAR, combined with AI summaries, allow users to quickly understand the significance of each new RIG filing without reading every page in full.
Transocean Ltd. (RIG) Form 4 summary: The reporting person, Perestroika (through Perestroika AS), acquired 4,000,000 registered shares on 09/26/2025 at $3.05 per share in a registered public offering. After the transaction, Perestroika beneficially owned 95,074,894 shares indirectly via Perestroika (Cyprus) Ltd. The filing identifies the reporting entity as a director and a 10% owner. The disclosure states Perestroika (Cyprus) Ltd. is a wholly owned subsidiary of Perestroika AS and that Mr. Frederik Mohn is the sole director and owner of Perestroika AS and the indirect beneficial owner of the securities. The form is signed by /s/ Daniel Ro-Trock by Power of Attorney dated 09/30/2025. The filing notes Perestroika AS's prior right to designate a board member has terminated.
Amendment No. 8 to Schedule 13D reports that Frederik W. Mohn, Perestroika AS and Perestroika (Cyprus) Ltd. (together, the Reporting Persons) beneficially own 95,074,894 to 95,418,301 shares of Transocean Ltd. (Shares), representing approximately 10.1% of the outstanding class based on 943,124,986 shares outstanding as of July 29, 2025. The filing describes a change in the form of ownership when Perestroika Sub exchanged $213,367,000 principal amount of 2.5% Senior Guaranteed Exchangeable Bonds into Shares on April 21, 2023, and discloses multiple cash purchases by Perestroika Sub between February 2024 and September 2025, including 4,000,000 shares bought at $3.05 per share in the Issuer’s registered offering on September 26, 2025. Mr. Mohn directly holds 22,148 shares plus vested RSU-related rights and has sole voting/dispositive power over 343,407 shares and shared voting/dispositive power over 95,074,894 shares. The filing replaces prior Item 1 text and states all other Items remain unchanged from the earlier Schedule 13D filings.
Transocean Ltd. is starting a new debt financing. The company announced that its subsidiary, Transocean International Limited, has begun an offering of $500 million aggregate principal amount of Senior Priority Guaranteed Notes due 2032.
The notes are being sold in a private placement to institutional investors, including qualified institutional buyers in the United States and certain investors outside the U.S. under Regulation S. This transaction is designed to raise long-term capital through bonds rather than issuing new shares.
Transocean Ltd. entered into an underwriting agreement for a previously announced underwritten public offering of 125,000,000 common shares at a public offering price of $3.05 per share. Citigroup Global Markets Inc. and Morgan Stanley & Co. LLC act as representatives of the underwriters.
The company granted the underwriters a 30-day option to purchase up to 18,750,000 additional shares, which was exercised in full on September 25, 2025. The offering was registered on Form S-3/ASR and is expected to close on September 26, 2025.
Transocean intends to use the net proceeds primarily to repay or redeem indebtedness, including part of the $655 million 8.00% Senior Notes due February 2027, with any remaining funds for general corporate purposes.
Transocean Ltd. prospectus supplement describes terms for potential debt securities and related corporate governance, capital and risk disclosures. It lists factors that could affect operations including oil and gas market volatility, contract renewals and cancellations, shipyard and reactivation timing, capital project costs, liquidity and debt management, legal, tax and regulatory matters, insurance and labor issues. The document discloses outstanding exchangeable bonds and warrants that could convert into shares at specified initial conversion/exercise prices and states 37,103,314 shares reserved under the 2015 Long-Term Incentive Plan as of August 31, 2025. It notes the board has exhausted certain share issuance authorizations and references audited consolidated financial statements by Ernst & Young LLP.
Transocean Ltd. announced the pricing of an underwritten public offering of 125,000,000 shares at
Transocean Ltd. prospectus supplement for debt securities describes the terms and investor considerations for offerings, and reiterates extensive risk factors affecting an offshore drilling company. It details outstanding exchangeable bonds and warrants that could be settled in shares, including $37 million of 4.0% exchangeable bonds (initial implied conversion $5.25/share), $259 million of 4.625% exchangeable bonds (initial implied conversion $3.44/share), and 22.2 million warrants exercisable at $3.71/share through March 13, 2026. The supplement also discloses 37,103,314 shares reserved under the 2015 Long-Term Incentive Plan and that certain capital authorizations have been exhausted. It summarizes potential investor exposures: liquidity and debt refinancing (including $655 million of 8.00% Senior Notes due 2027), contract and market risks in offshore drilling, regulatory and tax matters (including PFIC considerations for U.S. holders), events of default and trustee remedies, and permitted indenture amendments and defeasance mechanics.
Transocean Ltd. reported that it plans to offer and sell 100,000,000 company shares with a par value of $0.10 in an underwritten public offering. The company also expects to grant the underwriters a 30-day option to purchase up to an additional 15,000,000 shares at the public offering price, less underwriting discounts and commissions. These transactions would increase the company’s equity base and could dilute existing shareholders, depending on final pricing and how many shares are sold. Further details are provided in a related press release, which is included as an exhibit.
Transocean Ltd. plans to dispose of five drilling rigs and related assets and expects to record an estimated non-cash impairment charge of approximately $1.9 billion in its third quarter 2025 results. The rigs designated for sale, recycling or alternative use are Discoverer Clear Leader, Discoverer Americas, Deepwater Champion, Henry Goodrich and Discoverer India, along with associated equipment classified as held for sale. The company notes that these statements are forward-looking and subject to various operational, market and contractual risks outlined in its prior SEC filings.
Transocean Ltd. reported that a subsidiary completed privately negotiated exchanges of part of its 4.0% Senior Guaranteed Exchangeable Bonds due 2025. Holders swapped approximately $39.7 million in aggregate principal amount of these exchangeable bonds for about 13.9 million common shares plus a small cash payment for accrued and unpaid interest. This step is described as part of ongoing efforts to optimize the company’s capital structure.
After the exchange closed on August 19, 2025, approximately $37.3 million in aggregate principal amount of the bonds remained outstanding. The new shares were issued in a non‑public transaction relying on a Section 4(a)(2) exemption from registration under the Securities Act.