Transocean (RIG) CEO reports Rule 10b5-1 sales and 1.3M shares owned

Rhea-AI Filing Summary

Transocean Ltd. reported insider share sales by its President and CEO. The Form 4 shows that on 12/04/2025 and 12/05/2025, the CEO sold 8,469 and 57,968 registered shares of Transocean, respectively, at a price of $4.5 per share. These transactions were coded as open market or private sales.

After these sales, the CEO beneficially owned 1,361,683 shares following the first transaction and 1,303,715 shares following the second, all held directly. The filing notes that these sales were carried out under a Rule 10b5-1 trading plan adopted on March 28, 2025, indicating they were made according to a pre-arranged plan rather than discretionary timing.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Adamson Keelan

(Last) (First) (Middle)

1414 ENCLAVE PARKWAY

(Street)

HOUSTON TX 77077

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Transocean Ltd. [ RIG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	PRESIDENT AND CEO

3. Date of Earliest Transaction (Month/Day/Year)
12/04/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Registered Shares	12/04/2025		S(1)		8,469	D	$4.5	1,361,683	D
Registered Shares	12/05/2025		S(1)		57,968	D	$4.5	1,303,715	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

	/s/ Debra Kupferman by Power of Attorney	12/08/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What did Transocean (RIG) disclose in this Form 4 filing?

The filing discloses that Transocean's President and CEO, who is also a director, sold shares of the company in two transactions and reports his updated beneficial ownership position.

How many Transocean (RIG) shares did the CEO sell and at what price?

The CEO sold 8,469 registered shares on 12/04/2025 and 57,968 registered shares on 12/05/2025, both at a price of $4.5 per share.

How many Transocean (RIG) shares does the CEO own after these transactions?

Following the reported sales, the CEO beneficially owned 1,303,715 Transocean shares directly.

Were the Transocean (RIG) CEO share sales under a Rule 10b5-1 plan?

Yes. The explanation states that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 28, 2025.

What is the CEOs relationship to Transocean (RIG) as reported in the filing?

The reporting person is identified as both a Director and an Officer, with the title of President and CEO of Transocean Ltd.

Does this Transocean (RIG) Form 4 report any derivative securities?

The derivative securities table is included, but no specific derivative transactions are reported in the excerpt provided.