Keelan Adamson - 04 Dec 2025 Form 4 Insider Report for Transocean Ltd. (RIG)

Signature
/s/ Debra Kupferman by Power of Attorney
Issuer symbol
RIG
Transactions as of
04 Dec 2025
Net transactions value
-$298,966
Form type
4
Filing time
08 Dec 2025, 17:41:10 UTC
Previous filing
28 Oct 2025
Next filing
28 Jan 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Adamson Keelan PRESIDENT AND CEO, Director 1414 ENCLAVE PARKWAY, HOUSTON /s/ Debra Kupferman by Power of Attorney 08 Dec 2025 0001750415

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RIG Registered Shares Sale $38,110 -8,469 -0.62% $4.50 1,361,683 04 Dec 2025 Direct F1
transaction RIG Registered Shares Sale $260,856 -57,968 -4.3% $4.50 1,303,715 05 Dec 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 28, 2025.