Kosmos Energy (KOS) CEO purchases 315,790 shares in open market trade

Rhea-AI Filing Summary

Kosmos Energy Ltd. Chairman and CEO Andrew G. Inglis made an open-market purchase of common stock. He bought 315,790 shares on March 10, 2026 at a price of $1.90 per share. After this transaction, he directly owns 4,542,807 common shares.

Insights

Equity ownership and governance analyst

Kosmos Energy's CEO increased his direct shareholding through a sizable open-market purchase.

Andrew G. Inglis, the Chairman and CEO of Kosmos Energy Ltd., completed an open-market purchase of 315,790 common shares at $1.90 per share on March 10, 2026. This is a discretionary buy transaction coded "P" for open-market or private purchase.

Following the trade, Inglis directly holds 4,542,807 common shares, indicating a meaningful personal equity stake. The filing does not list any derivative positions, so this transaction reflects a straightforward increase in common stock ownership rather than an option exercise or restructuring.

The economic significance of this purchase for overall valuation depends on Kosmos Energy's total shares outstanding and market capitalization, which are not detailed here. Future company filings may provide additional context on how this insider ownership level compares with broader shareholder structure.

Insider Trade Summary

Net Buyer: 315,790 shares ($600,001)

Net Buy 1 txn

Insider INGLIS ANDREW G

Role Chairman and CEO

Bought 315,790 shs ($600K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	315,790	$1.90	$600K

Holdings After Transaction: Common Stock — 4,542,807 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

INGLIS ANDREW G

(Last) (First) (Middle)

8176 PARK LANE, SUITE 500

(Street)

DALLAS TX 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
X	Officer (give title below)		Other (specify below)
	Chairman and CEO

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/10/2026		P		315,790	A	$1.9	4,542,807	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:

Remarks:

	By: /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.

FAQ

What insider transaction did Kosmos Energy (KOS) report for its CEO?

Andrew G. Inglis, Chairman and CEO of Kosmos Energy, reported an open-market purchase of 315,790 common shares. The shares were bought at $1.90 per share, increasing his direct ownership to 4,542,807 shares after the transaction.

How many Kosmos Energy shares does the CEO own after this Form 4 filing?

After the reported transaction, Kosmos Energy CEO Andrew G. Inglis directly owns 4,542,807 common shares. This figure reflects his holdings after buying 315,790 shares at $1.90 per share in an open-market purchase on March 10, 2026.

Was the Kosmos Energy (KOS) CEO transaction a purchase or a sale?

The transaction was a purchase. CEO Andrew G. Inglis executed an open-market buy of 315,790 Kosmos Energy common shares at $1.90 per share, as indicated by transaction code "P" and the classification as an open-market purchase.

What price did Kosmos Energy’s CEO pay per share in the reported trade?

The CEO paid $1.90 per share for Kosmos Energy common stock. He acquired 315,790 shares in this open-market transaction, resulting in total share ownership of 4,542,807 common shares following completion of the trade.

Does the Kosmos Energy Form 4 include any option exercises or derivatives?

No derivative activity is shown in this Form 4 excerpt. The filing lists only a non-derivative transaction: an open-market purchase of 315,790 common shares, and the derivativeSummary section is empty, indicating no reported option or convertible security exercises.