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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934

Date of report (date of earliest event reported): February 11, 2026

TRANSOCEAN LTD.

(Exact name of Registrant as specified in its charter)

Switzerland

  ​ ​ ​

001-38373

  ​ ​ ​

98-0599916

(State or other jurisdiction of

(Commission

(I.R.S. Employer

incorporation or organization)

File Number)

Identification No.)

Turmstrasse 30

  ​ ​

Steinhausen, Switzerland

CH-6312

(Address of principal executive offices)

(zip code)

Registrant’s telephone number, including area code: +41 (41) 749-0500

​ ​

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act

Title of each class

Trading Symbol

Name of each exchange on which registered:

Shares, $0.10 par value

RIG

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 7.01Regulation FD Disclosure.

Transocean Ltd. (NYSE: RIG) (“Transocean”) today announced contract fixtures for two of its harsh environment semisubmersibles in Norway. In aggregate, the fixtures represent approximately $184 million in firm contract backlog.

The Transocean Encourage was awarded a seven-well contract extension. The estimated 365 days of work is expected to commence in the first quarter of 2027 in direct continuation of the rig’s current program and contribute approximately $152 million in backlog, excluding additional services.

Two one-well options have been exercised for the Transocean Enabler in direct continuation of the rig’s current activity. The incremental 70 days of work is expected to contribute approximately $32 million in backlog, excluding additional services, and commits the rig through December 2027.

A copy of the press release announcing the fixtures referred to above is attached hereto and incorporated herein by reference as Exhibit 99.1.

Item 9.01  Financial Statements and Exhibits.

(d)  Exhibits.

Exhibit No.

  ​ ​ ​

Description

99.1

Transocean Ltd. Announces Contract Award and Extension Totaling $184 Million

101

Interactive data files pursuant to Rule 405 of Regulation S-T formatted in Inline Extensible Business Reporting Language

104

Cover Page Interactive Data File (formatted as inline XBRL).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

TRANSOCEAN LTD.

Date: February11, 2026

By:

/s/ Debra Kupferman

Debra Kupferman

Authorized Person


ATTACHMENTS / EXHIBITS

ATTACHMENTS / EXHIBITS

EX-99

EX-101.SCH

EX-101.DEF

EX-101.LAB

EX-101.PRE

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