BlackRock reports 39.8M shares of Kosmos Energy (NYSE: KOS) in 13G/A

Rhea-AI Filing Summary

Kosmos Energy Ltd amendment reports that BlackRock, Inc. beneficially owns 39,807,154 shares of common stock, representing 6.7% of the class as stated on the cover. The filing (Amendment No. 10) lists sole voting power of 39,190,938 and a CUSIP of 500688106; the signature is dated 04/24/2026.

Insights

Institutional Ownership Analyst

BlackRock reports a 6.7% beneficial stake in Kosmos Energy.

BlackRock's filing shows beneficial ownership of 39,807,154 shares with 39,190,938 shares of sole voting power. This level of ownership is disclosed under a Schedule 13G/A amendment and is typical reporting for large asset managers.

Ownership changes or further Amendments could appear in subsequent filings; timing in this excerpt is anchored by the cover date 03/31/2026 and signature 04/24/2026.

Securities Compliance Counsel

The amendment clarifies reporting units and voting/dispositive power.

The filing cites SEC Release No. 34-39538 to explain aggregation across Reporting Business Units and discloses sole voting and dispositive powers explicitly, consistent with Schedule 13G/A guidance.

Investors should note this is a beneficial ownership disclosure; no transaction price, acquisition method, or proceeds are provided in the excerpt.

Key Figures

Beneficial ownership: 39,807,154 shares Percent of class: 6.7% Sole voting power: 39,190,938 shares +3 more

6 metrics

Beneficial ownership 39,807,154 shares reported on Amendment No. 10

Percent of class 6.7% percent of common stock beneficially owned

Sole voting power 39,190,938 shares shares with sole power to vote

CUSIP 500688106 Kosmos Energy Ltd common stock identifier

Cover date 03/31/2026 date shown on cover page

Signature date 04/24/2026 date of signature by Spencer Fleming

Key Terms

Schedule 13G/A, beneficially owned, sole dispositive power, CUSIP

4 terms

Schedule 13G/A regulatory

"Amendment No. 10 ) KOSMOS ENERGY LTD Common Stock"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficially owned financial

"Amount beneficially owned: 39807154"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 39807154"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

CUSIP technical

"CUSIP No.: 500688106"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 10)

KOSMOS ENERGY LTD

(Name of Issuer)

Common Stock

(Title of Class of Securities)

500688106

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 500688106

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 39,190,938.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 39,807,154.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

39,807,154.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.7 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: KOSMOS ENERGY LTD
(b)	Address of issuer's principal executive offices: 8176 PARK LANE DALLAS TX 75231
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 500688106
Item 4.	Ownership
(a)	Amount beneficially owned: 39807154
(b)	Percent of class: 6.7 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 39190938
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 39807154
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of KOSMOS ENERGY LTD. No one person's interest in the common stock of KOSMOS ENERGY LTD is more than five percent of the total outstanding common shares.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	04/24/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7

FAQ

What stake does BlackRock report in KOS in this Schedule 13G/A?

BlackRock reports beneficial ownership of 39,807,154 shares equal to 6.7% of KOS common stock. The cover lists sole voting power of 39,190,938 and the CUSIP 500688106.

Does the filing state how BlackRock acquired the KOS shares?

No, the filing does not describe acquisition method or transaction prices. It discloses only beneficial ownership, voting and dispositive powers and aggregation rules per SEC Release No. 34-39538.

What dates are shown on the KOS Schedule 13G/A amendment?

The cover references 03/31/2026 and the signature block is dated 04/24/2026. Amendment number is listed as Amendment No. 10 on the filing.

Who signed the KOS filing on behalf of BlackRock?

Spencer Fleming, listed as Managing Director, signed the Schedule 13G/A, with the signature date shown as 04/24/2026 in the excerpt.

Does this Schedule 13G/A indicate any person holds more than 5% on behalf of another?

The filing states various persons may have rights to dividends or sale proceeds, but no single other's interest exceeds 5% of the total outstanding common shares, per Item 6.