Kosmos Energy (KOS) director adds 3,157,895 shares in open-market buy

Q: Was the Kosmos Energy (KOS) director transaction a buy or a sell?

The transaction was a buy . The Form 4 shows a transaction code "P," described as an open-market or private purchase, with 3,157,895 common shares acquired. There were no reported sales or derivative exercises in this particular filing.

Filing Impact

(Very High)

Filing Sentiment

(Very Positive)

Form Type

Rhea-AI Filing Summary

Kosmos Energy Ltd. director Adebayo O. Ogunlesi made a large open-market purchase of 3,157,895 shares of common stock at $1.90 per share. After this transaction, he directly owns 4,974,184 shares. This filing highlights a substantial increase in his personal stake through a discretionary market buy.

Insights

Kosmos Energy director significantly increases direct share ownership via open-market buying.

Director Adebayo O. Ogunlesi executed an open-market purchase of 3,157,895 Kosmos Energy common shares at $1.90 per share. Open-market purchases are active decisions, indicating the director chose to increase direct exposure at prevailing prices rather than receiving shares as compensation.

Following the trade, his direct holdings rise to 4,974,184 shares, meaning this transaction represents a sizable expansion of his position. The filing shows no derivative positions, so current exposure is entirely through common stock. The overall significance depends on how this ownership compares with total shares outstanding and future board or insider activity.

Insider Trade Summary

Net Buyer: 3,157,895 shares ($6,000,001)

Net Buy 1 txn

Insider Ogunlesi Adebayo O.

Role Director

Bought 3,157,895 shs ($6.00M)

Type	Security	Shares	Price	Value
Purchase	Common Stock	3,157,895	$1.90	$6.00M

Holdings After Transaction: Common Stock — 4,974,184 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

03/12/2026 - 04:45 PM

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^*

Ogunlesi Adebayo O.

(Last)

(First)

(Middle)

8176 PARK LANE, SUITE 500

(Street)

DALLAS

75231

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Kosmos Energy Ltd. [ KOS ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	03/10/2026		P		3,157,895	A	$1.9	4,974,184	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

Remarks:

	/s/ Josh R. Marion, Attorney-in-Fact	03/12/2026
	** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What did Kosmos Energy (KOS) director Adebayo Ogunlesi do in this Form 4?

Director Adebayo O. Ogunlesi reported an open-market purchase of 3,157,895 Kosmos Energy common shares. He bought the stock directly in the market and increased his direct ownership, rather than receiving shares through options, grants, or other derivative-based compensation mechanisms.

How many Kosmos Energy (KOS) shares did the director buy and at what price?

He purchased 3,157,895 shares of Kosmos Energy common stock at a price of $1.90 per share. This was an open-market transaction, meaning the shares were acquired at prevailing market prices rather than through a company-administered equity award or option exercise.

What is Adebayo Ogunlesi’s total Kosmos Energy (KOS) ownership after this transaction?

After the reported purchase, Adebayo O. Ogunlesi directly owns 4,974,184 shares of Kosmos Energy common stock. This figure reflects his position immediately following the transaction and shows a substantial increase compared with his prior directly held shares.

Was the Kosmos Energy (KOS) director transaction a buy or a sell?

The transaction was a buy. The Form 4 shows a transaction code "P," described as an open-market or private purchase, with 3,157,895 common shares acquired. There were no reported sales or derivative exercises in this particular filing.

Does the Kosmos Energy (KOS) filing show any options or derivatives for the director?

No, the filing’s derivative section is empty, indicating no reported option or other derivative transactions in this Form 4. The activity consists solely of a non-derivative common stock purchase, leaving his exposure fully in directly held shares after the trade.