Robert Thaddeus Vayda - 05 Feb 2026 Form 4 Insider Report for Transocean Ltd. (RIG)

Role: EVP, Chief Financial Officer
Signature: /s/ Debra Kupferman by Power of Attorney
Issuer symbol: RIG
Transactions as of: 05 Feb 2026
Net transactions value: -$54,626
Form type: 4
Filing time: 09 Feb 2026, 18:13:58 UTC
Previous filing: 01 Dec 2025
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Vayda Robert Thaddeus	EVP, Chief Financial Officer	1414 ENCLAVE PARKWAY, HOUSTON	/s/ Debra Kupferman by Power of Attorney	09 Feb 2026	0002022236

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RIG	Registered Shares	Options Exercise	$0	+34,726	+15%	$0.000000	269,880	05 Feb 2026	Direct	F1
transaction	RIG	Registered Shares	Tax liability	$54,626	-10,947	-4.1%	$4.99	258,933	06 Feb 2026	Direct	F2
holding	RIG	Registered Shares						91	05 Feb 2026	By Child	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	RIG	Restricted Units	Award	$0	+239,740		$0.000000	239,740	05 Feb 2026	Registered Shares	239,740	$0.000000	Direct	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Deferred Units awarded on February 9, 2023, vested on February 5, 2026, upon satisfaction of the applicable performance measures pursuant to the Issuer's 2023-2025 performance cycle
F2	Shares sold upon vesting to satisfy tax withholding obligations.
F3	The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.
F4	The Restricted Units were acquired on February 5, 2026, by the reporting person pursuant to the Issuer's long-term incentive plan. The restricted share units vest as follows: 79,913 on March 1, 2027; 79,913 on March 1, 2028; and 79,914 on March 1, 2029.