Seadrill director gains 4,860 shares via RSU vesting

Seadrill Ltd director Mark A. McCollum increased his direct ownership through an equity award vesting.

Rhea-AI Filing Summary

Seadrill Ltd director Mark A. McCollum increased his direct ownership through an equity award vesting. On May 14, 2026, 4,860 restricted stock units converted on a one-for-one basis into 4,860 common shares at an exercise price of $0.00 per share. Following this derivative exercise, he directly holds 7,269 common shares. The restricted stock units had been granted on May 14, 2025 and fully vested on the first anniversary of the grant date.

Insider Trade Summary

4,860 shares exercised/converted

Exercise 2 txns

Insider MCCOLLUM MARK A

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	4,860	$0.00	$0.00
Exercise	Common Shares	4,860	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 0 contracts (Direct); Common Shares — 7,269 shares (Direct)

Footnotes (2)

1. F1. Restricted stock units convert into common shares, par value $0.01 per share, of Seadrill Limited on a one-for-one basis.
2. F2. On May 14, 2025, the reporting person was granted 4,860 restricted stock units, all of which vested on the first anniversary of the grant date.

Key Figures

Shares acquired via RSU conversion: 4,860 shares Post-transaction holdings: 7,269 shares RSU grant size: 4,860 units +1 more

4 metrics

Shares acquired via RSU conversion 4,860 shares Restricted stock units converting into common shares on May 14, 2026

Post-transaction holdings 7,269 shares Common shares directly held by Mark A. McCollum after transaction

RSU grant size 4,860 units Restricted stock units granted on May 14, 2025

Exercise price $0.00 per share Conversion of restricted stock units into common shares

Key Terms

Restricted stock units, derivative security, exercise or conversion, one-for-one basis

4 terms

Restricted stock units financial

"On May 14, 2025, the reporting person was granted 4,860 restricted stock units, all of which vested on the first anniversary"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

exercise or conversion financial

"transaction_action": "derivative exercise/conversion""

one-for-one basis financial

"Restricted stock units convert into common shares, par value $0.01 per share, of Seadrill Limited on a one-for-one basis"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Seadrill (SDRL) director Mark McCollum report?

Mark A. McCollum reported an acquisition via equity compensation. On May 14, 2026, 4,860 restricted stock units converted into 4,860 Seadrill common shares at $0.00 per share, reflecting a routine vesting and exercise of a previously granted award.

How many Seadrill (SDRL) shares does Mark McCollum hold after this Form 4?

After the reported transaction, Mark A. McCollum directly holds 7,269 Seadrill common shares. This total reflects the conversion of 4,860 restricted stock units into common shares, with the derivative position in those specific units reduced to zero.

What triggered the conversion of Seadrill (SDRL) restricted stock units for Mark McCollum?

The conversion was triggered by vesting. McCollum was granted 4,860 restricted stock units on May 14, 2025, and all units vested on the first anniversary. Upon vesting, they converted into 4,860 Seadrill common shares on a one-for-one basis at $0.00 per share.

Was Mark McCollum’s Seadrill (SDRL) Form 4 an open-market purchase or a compensation event?

The filing reflects a compensation-related event, not an open-market trade. The 4,860 shares resulted from restricted stock units converting into common shares at $0.00 per share, consistent with an equity award vesting rather than a market purchase or sale.

Did Mark McCollum sell any Seadrill (SDRL) shares in this Form 4 filing?

No sales were reported in this filing. The Form 4 shows two acquisition-type transactions tied to derivative exercise, where 4,860 restricted stock units converted into 4,860 common shares, increasing his directly held Seadrill share position to 7,269.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/18/2026 - 10:58 AM EDT Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

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

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^*

MCCOLLUM MARK A

(Last) (First) (Middle)

4425 WESTWAY PARK BLVD., SUITE 170

(Street)

HOUSTON TEXAS 77041

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Seadrill Ltd [ SDRL ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/14/2026

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

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

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

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
Common Shares	05/14/2026		M		4,860	A	(1)	7,269	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
Restricted Stock Units	(1)	05/14/2026		M			4,860	(2)	(2)	Common Shares	4,860	$0	0	D

Explanation of Responses:

1. Restricted stock units convert into common shares, par value $0.01 per share, of Seadrill Limited on a one-for-one basis.

2. On May 14, 2025, the reporting person was granted 4,860 restricted stock units, all of which vested on the first anniversary of the grant date.

	/s/ Todd D. Strickler, attorney-in-fact	05/18/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)