Company: RIG
Filing Date: 2025-09-24
Form Type: 424B5
Source: 0001451505-25-000097
Chunk: 38

Company: Transocean Ltd.
Filing Date: 2025-09-24
Form: 424B5
Chunk 38
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 and Information Reporting Dividends paid to Non-U.S. Holders with respect to shares and proceeds from a sale or other disposition by Non-U.S. Holders of shares received in the United States or through certain U.S.-related financial intermediaries may be subject to information reporting and backup withholding unless the Holder provides proof of an applicable exemption or furnishes its taxpayer identification number (generally, on an applicable IRS Form W-8) and otherwise complies with all applicable requirements. Backup withholding is not an additional tax and may be credited against a Non-U.S. Holder’s regular U.S. federal income tax liability or, if in excess of such liability, refunded by the IRS if a timely refund claim is filed with the IRS. Swiss Taxation Set out below is a summary of certain Swiss tax matters related to the purchase, holding and disposal of shares. The statements below regarding Swiss taxation are based on the laws in force in Switzerland as of the date of this prospectus supplement, which may be subject to any changes in law occurring after such date. Such changes could possibly be made on a retroactive basis. The summary does not address foreign tax laws. The summary is of a general nature and does not purport to be a comprehensive description of all the Swiss tax considerations that may be relevant for a decision to purchase, own or dispose of shares. Shareholders who wish to clarify their own tax situation should consult with and rely upon their own tax advisers. Shareholders resident in Switzerland or holding their shares as part of a Swiss permanent establishment should consult with their own tax advisers regarding the Swiss income tax treatment of the purchase, holding and disposal of shares. Swiss Withholding Tax Under present Swiss tax law, dividends due and similar cash or in-kind distributions made by Transocean Ltd. to a shareholder of shares (including liquidation proceeds and stock dividends) are subject to Swiss federal withholding tax ( Verrechnungssteuer) (“Withholding Tax”), currently at a rate of 35% (applicable to the gross amount

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of the taxable distribution). Transocean Ltd. is obliged to deduct the Withholding Tax from the gross amount of any taxable distribution and to pay the tax to the Swiss Federal Tax Administration within 30 calendar days of the due date of such distribution. However, the repayment of the nominal value of the shares and any (permissible) repayment of qualifying additional paid-in capital (capital contribution reserves (Reserven aus Kapitaleinlagen)) are not subject to the Withholding Tax.

Swiss