Form 8-K
8-K — Kosmos Energy Ltd.
Accession: 0000950103-26-009291
Filed: 2026-06-22
Period: 2026-06-22
CIK: 0001509991
SIC: 1311 (CRUDE PETROLEUM & NATURAL GAS)
Item: Completion of Acquisition or Disposition of Assets
Item: Financial Statements and Exhibits
Documents
8-K — dp248740_8k.htm (Primary)
EX-99.1 — EXHIBIT 99.1 (dp248740_ex9901.htm)
XML — IDEA: XBRL DOCUMENT (R1.htm)
8-K — FORM 8K
8-K (Primary)
Filename: dp248740_8k.htm · Sequence: 1
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0001509991
0001509991
2026-06-22
2026-06-22
iso4217:USD
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xbrli:shares
UNITED
STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934
Date of Report (Date of earliest event reported):
June 22, 2026
KOSMOS ENERGY LTD.
(Exact Name of Registrant as Specified in its Charter)
Delaware
001-35167
98-0686001
(State or other
jurisdiction of incorporation)
(Commission File Number)
(I.R.S. Employer Identification No.)
8176 Park Lane
Dallas, Texas
75231
(Address of Principal Executive Offices)
(Zip Code)
Title of each class
Trading Symbol
Name of each exchange on which registered:
Common Stock $0.01 par value
KOS
New York Stock Exchange
London Stock Exchange
Registrant’s telephone number, including
area code: +1 214 445 9600
Not Applicable
(Former name or former address, if changed since
last report)
Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2.
below):
¨ Written communications pursuant to Rule 425 under the Securities
Act (17 CFR 230.425)
¨ Soliciting material pursuant to Rule 14a-12 under the Exchange
Act (17 CFR 240.14a-12)
¨ Pre-commencement communications pursuant to Rule 14d-2(b) under
the Exchange Act (17 CFR 240.14d-2(b))
¨ Pre-commencement communications pursuant to Rule 13e-4(c) under
the Exchange Act (17 CFR 240.13e-4(c))
Indicate by check mark whether the registrant is an emerging growth
company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange
Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ¨
If an emerging growth company, indicate by check mark if the registrant
has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant
to Section 13(a) of the Exchange Act. ¨
Item 2.01 Completion
of Acquisition or Disposition of Assets.
On June
16, 2026, Kosmos Energy Ltd. (the “Company”) completed its previously announced
sale (the “Transaction”) of its participating interests in the Ceiba Field and Okume Complex production assets located in
Block G offshore Equatorial Guinea to a subsidiary of Panoro Energy ASA (“Panoro”). The Transaction was governed by the Share
Sale and Purchase Agreement, dated February 24, 2026 (the “Purchase Agreement”), by and between Kosmos Energy Operating, as
seller, Panoro Energy Block G Limited, as purchaser, and Panoro, as purchaser guarantor. Pursuant to the terms of the Purchase Agreement,
the Company received final cash consideration on completion, post-closing adjustments, of approximately $127 million. The closing adjustments
reflect the cash received from the assets in the first half of 2026 to completion on June 16, 2026. The Company is also entitled to future
contingent consideration of up to $39.5 million, comprised of $12.5 million linked to future production performance at the Ceiba field,
and $9.0 million payable in each of the years 2027, 2028 and 2029, subject to certain production and oil price thresholds.
The foregoing
description of the Purchase Agreement and the Transaction does not purport to be complete and is qualified in its entirety by reference
to the full text of the Purchase Agreement, which was previously filed by the Company as Exhibit 10.1 to the Company’s Quarterly
Report on Form 10-Q filed on May 5, 2026 and is incorporated herein by reference.
The Transaction
constituted a significant disposition for purposes of Item 2.01 of Form 8-K. Accordingly, the Company is filing this Current Report on
Form 8-K to provide the pro forma information required by Item 9.01 of Form 8-K.
Item
9.01 Financial Statements and Other Exhibits.
(b) Pro forma financial information.
See the unaudited pro forma condensed financial
statements of the Company as of and for the year ended December 31, 2025 and as of and for the three months ended March 31, 2026 filed
as Exhibit 99.1 to this Current Report on Form 8-K.
(d)
Exhibits
The exhibits listed in the following Exhibit Index
are filed as part of this Current Report on Form 8-K .
Exhibit No.
Description
99.1
Unaudited pro forma condensed financial statements
104
Cover Page Interactive Data File (embedded within the Inline XBRL document)
SIGNATURES
Pursuant to the requirements of the Securities
Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly
authorized.
Date: June 22, 2026
KOSMOS ENERGY LTD.
By:
/s/ NEAL D. SHAH
Neal D. Shah
Senior Vice President and Chief Financial Officer
EX-99.1 — EXHIBIT 99.1
EX-99.1
Filename: dp248740_ex9901.htm · Sequence: 2
Exhibit 99.1
KOSMOS ENERGY LTD. AND SUBSIDIARIES
UNAUDITED PRO FORMA CONDENSED FINANCIAL INFORMATION
The following Unaudited Pro
Forma Condensed Balance Sheet as of March 31, 2026 and the Unaudited Pro Forma Condensed Statements of Operations for the three months
ended March 31, 2026 and for the year ended December 31, 2025 have been derived from the historical consolidated financial statements
of Kosmos Energy Ltd. (together with its subsidiaries, “Kosmos” or the “Company”), as adjusted to give effect
for the sale of all of the shares of Kosmos International Petroleum, Inc., which indirectly holds a 40.375% participating interest in
the Ceiba Field and Okume Complex production assets located in Block G offshore Equatorial Guinea by the Company (the “Disposition”).
In consideration for the Disposition, Kosmos received upfront cash of approximately $127.0 million based on an initial purchase price
of $180.0 million reduced by certain purchase price adjustments totaling approximately $53.0 million, and is entitled to future contingent
consideration of up to $39.5 million, comprising $12.5 million linked to production performance at the Ceiba field and $9.0 million payable
in each of 2027, 2028 and 2029, which are subject to certain oil price and production thresholds. The contingent consideration has not
been recognized in the pro forma balance sheet. The Unaudited Pro forma Condensed Financial Information is intended to reflect the estimated
impact of the Disposition on the Company on a pro forma basis as of and for the periods indicated.
The following Unaudited Pro
Forma Condensed Financial Information is based on and should be read in conjunction with:
• The historical audited consolidated financial statements of the Company and the related notes and “Management’s
Discussion and Analysis of Financial Condition and Results of Operations” included in its Annual Report on Form 10-K for the
fiscal year ended December 31, 2025, as filed with the Securities and Exchange Commission (“SEC”) on March 2, 2026;
• The historical unaudited condensed consolidated interim financial statements of the Company and the related
notes and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in its quarterly
report on Form 10-Q for the three months ended March 31, 2026, as filed with the SEC on May 5, 2026.
The Unaudited Pro Forma Condensed
Balance Sheet as of March 31, 2026 and the Unaudited Pro Forma Condensed Statements of Operations for the three months ended March 31,
2026 and for the year ended December 31, 2025 give pro forma effects to the elimination of certain assets and liabilities associated
with the Disposition as if it had been consummated on March 31, 2026 (in the case of the balance sheet) or January 1, 2025 (in the case
of the statement of operations). The unaudited pro forma effects of the Disposition on the Company’s oil and gas reserves and the
standardized measure of future net cash flows, give pro forma effect to the Dispositions of the reserves based on the information disclosed
in the Company’s annual report as of and for the year ended December 31, 2025.
The Unaudited Pro Forma Condensed
Financial Information has been prepared to reflect adjustments to the Company’s historical consolidated financial information that
are (i) directly attributable to the Disposition and (ii) factually supportable.
The Unaudited Pro Forma Condensed
Financial Information is presented for informational purposes only and is not necessarily indicative of the operating results or financial
position that actually would have been achieved if the Disposition had occurred on the dates indicated or that may be achieved in future
periods. It also does not reflect any cost savings, operating synergies or revenue enhancements that the Company may achieve with respect
to eliminating the companies or the impact of any non-recurring activity and any one-time transaction related costs. Synergies and integration
costs have been excluded from consideration because they do not meet the criteria for unaudited pro forma adjustments.
KOSMOS ENERGY LTD. AND SUBSIDIARIES
UNAUDITED PRO FORMA CONDENSED BALANCE SHEETS
AS OF MARCH 31, 2026
(In thousands, except share data)
Kosmos
Disposition
Pro Forma
Historical
Adjustments (A)
Company
Assets:
Current assets:
Cash and cash equivalents
$ 129,957
$ —
$ 129,957
Receivables
110,510
—
110,510
Inventories
182,725
—
182,725
Prepaid expenses and other
11,543
—
11,543
Derivatives
—
—
—
Assets held for sale
18,707
18,707
—
Total current assets
453,442
18,707
434,735
Property and equipment, net
3,367,489
—
3,367,489
Other assets:
Restricted cash
30,630
—
30,630
Long-term receivables
465,649
—
465,649
Deferred tax assets
2,783
—
2,783
Derivatives
—
—
—
Non-current assets held for sale
408,895
408,895
—
Other
54,554
—
54,554
Total assets
$ 4,783,442
$ 427,602
$ 4,355,840
Liabilities and stockholders’ equity
Current liabilities:
Accounts payable
$ 194,969
$ —
$ 194,969
Accrued liabilities
332,078
—
332,078
Current maturities of long-term debt
30,220
—
30,220
Derivatives
156,243
—
156,243
Liabilities held for sale
43,544
43,544
—
Total current liabilities
757,054
43,544
713,510
Long-term liabilities:
Long-term debt, net
2,866,043
127,034
2,739,009
Derivatives
14,915
—
14,915
Asset retirement obligations
196,297
—
196,297
Deferred tax liabilities
134,750
—
134,750
Long-term liabilities held for sale
260,601
260,601
—
Other long-term liabilities
38,673
—
38,673
Total long-term liabilities
3,511,279
387,635
3,123,644
Stockholders’ equity:
Preference shares, $0.01 par value; 200,000,000 authorized shares; zero
issued at March 31, 2026
—
—
—
Common stock, $0.01 par value; 2,000,000,000 authorized shares;
637,413,155 issued at March 31, 2026
6,374
—
6,374
Additional paid-in capital
2,753,572
—
2,753,572
Accumulated deficit
(2,007,830 )
(3,577 )
(2,004,253 )
Treasury stock, at cost, 44,263,269 shares at March 31, 2026
(237,007 )
—
(237,007 )
Total stockholders’ equity
515,109
(3,577 )
518,686
Total liabilities and stockholders’ equity
$ 4,783,442
$ 427,602
$ 4,355,840
See accompanying notes.
KOSMOS ENERGY LTD. AND SUBSIDIARIES
UNAUDITED PRO FORMA CONDENSED STATEMENT OF OPERATIONS
FOR THE YEAR ENDED DECEMBER 31, 2025
(In thousands, except share data)
Kosmos
Disposition
Pro Forma
Historical
Adjustments (B)
Company
Revenues and other income:
Oil and gas revenue
$ 1,288,352
$ 165,118
$ 1,123,234
Gain on sale of assets
2,200
—
2,200
Other income, net
1,098
—
1,098
Total revenues and other income
1,291,650
165,118
1,126,532
Costs and expenses:
Oil and gas production
708,902
131,501
577,401
Exploration expenses
223,616
321
223,295
General and administrative
76,120
2,658
73,462
Depletion, depreciation and amortization
556,774
78,818
477,956
Impairment of long-lived assets
177,563
—
177,563
Interest and other financing costs, net
223,430
(195 )
223,625
Derivatives, net
(53,665 )
(20,171 )
(33,494 )
Other expenses, net
13,491
8,023
5,468
Total costs and expenses
1,926,231
200,955
1,725,276
Loss before income taxes
(634,581 )
(35,837 )
(598,744 )
Income tax expense (benefit)
65,205
(11,860 )
77,065
Net loss
$ (699,786 )
$ (23,977 )
$ (675,809 )
Net loss per share:
Basic
$ (1.47 )
$ (1.42 )
Diluted
$ (1.47 )
$ (1.42 )
Weighted average number of shares used to
compute net loss per share:
Basic
477,591
477,591
Diluted
477,591
477,591
See accompanying notes.
KOSMOS ENERGY LTD. AND SUBSIDIARIES
UNAUDITED PRO FORMA CONDENSED STATEMENT OF OPERATIONS
FOR THE THREE MONTHS ENDED MARCH 31, 2026
(In thousands, except share data)
Kosmos
Disposition
Pro Forma
Historical
Adjustments (B)
Company
Revenues and other income:
Oil and gas revenue
$ 370,728
$ 22,395
$ 348,333
Gain on sale of assets
—
—
—
Other income, net
169
—
169
Total revenues and other income
370,897
22,395
348,502
Costs and expenses:
Oil and gas production
130,595
14,853
115,742
Exploration expenses
19,744
—
19,744
General and administrative
27,710
815
26,895
Depletion, depreciation and amortization
119,873
4,118
115,755
Interest and other financing costs, net
58,802
(34 )
58,836
Derivatives, net
251,996
68,051
183,945
Other expenses, net
3,264
24
3,240
Total costs and expenses
611,984
87,827
524,157
Loss before income taxes
(241,087 )
(65,432 )
(175,655 )
Income tax expense (benefit)
(15,513 )
650
(16,163 )
Net loss
$ (225,574 )
$ (66,083 )
$ (159,491 )
Net loss per share:
Basic
$ (0.45 )
$ (0.32 )
Diluted
$ (0.45 )
$ (0.32 )
Weighted average number of shares used to compute net loss per share:
Basic
506,198
506,198
Diluted
506,198
506,198
See accompanying notes.
KOSMOS ENERGY LTD. AND SUBSIDIARIES
NOTES TO THE UNAUDITED PRO FORMA CONDENSED FINANCIAL
STATEMENTS
Note 1.
Description of Transaction
On February 24, 2026, Kosmos
Energy Operating (“KEO”), a wholly-owned subsidiary of Kosmos Energy Ltd. (“Kosmos” or the “Company”),
entered into a Share Sale and Purchase Agreement (the “SPA”) for the sale (the “Disposition”) of all of the shares
of KEO’s wholly-owned subsidiary, Kosmos International Petroleum, Inc., which indirectly holds a 40.375% participating interest
in the Ceiba Field and Okume Complex production assets located in Block G offshore Equatorial Guinea. The Disposition closed on June 16,
2026. In consideration for the Disposition, Kosmos received approximately $127.0 million in upfront cash based on an initial purchase
price of $180.0 million reduced by certain purchase price adjustments totaling approximately $53.0 million, and is entitled to future
contingent consideration of up to $39.5 million, comprising $12.5 million linked to production performance at the Ceiba field and $9.0
million payable in each of 2027, 2028 and 2029, which are subject to certain oil price and production thresholds.
Note 2. Basis of Presentation
The
following Unaudited Pro Forma Condensed Financial Information reflect the consolidated historical results of the Company, on a pro forma
basis to give effect to the Disposition, as if it had been consummated on March 31, 2026 in the Unaudited Pro Forma Condensed Balance
Sheet, and on January 1, 2025 in the Unaudited Pro Forma Condensed Statement of Operations.
The
Unaudited Pro Forma Condensed Balance Sheet and Statement of Operations as of and for the three months ended March 31, 2026, respectively,
were derived from Kosmos’ unaudited condensed consolidated financial statements as of and for the three months ended March 31, 2026.
The Unaudited Pro Forma Condensed Statement of Operations for the year ended December 31, 2025 was derived from Kosmos’ audited
consolidated statement of operations for the year ended December 31, 2025.
The
Unaudited Pro Forma Condensed Financial Information has been prepared pursuant to the rules and regulations of the Securities and Exchange
Commission. Certain information and certain footnote disclosures normally included in financial statements prepared in accordance
with U.S. generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations; however,
management believes that the disclosures are adequate to make the information presented not misleading.
The
Unaudited Pro Forma Condensed Financial Information reflect events directly attributable to the described Disposition and certain assumptions
that the Company believes are reasonable. The Unaudited Pro Forma Condensed Financial Information are not necessarily indicative of financial
results that would have been attained had the described Disposition occurred on the dates indicated above. The adjustments are based on
currently available information and certain estimates and assumptions. Management believes that the assumptions provide a reasonable basis
for presenting the significant effects of the described Disposition as contemplated and that the pro forma adjustments give appropriate
effect to those assumptions and are properly applied in the unaudited pro forma consolidated and financial statements.
The
Unaudited Pro Forma Condensed Financial Information are provided for illustrative purposes only and are not intended to represent or be
indicative of the results of operations or financial position of the company that would have been recorded had the Disposition been completed
as of the dates presented and should not be taken as representative of future results of operations or financial position of the company.
The Unaudited Pro Forma Condensed Financial Information do not reflect the impacts of any potential operational efficiencies or cost savings
that the company may achieve following the Disposition.
The
unaudited pro forma condensed financial statements should be read in conjunction with the Company’s financial statements and related
notes included on Form 10-K and Form 10-Q filed on March 2, 2026 and May 5, 2026, respectively.
The Unaudited Pro forma Condensed
Financial Information has been prepared by the Company by accounting for the transaction as a long-lived asset disposal under Accounting
Standards Codification (“ASC”) Subtopic 360 — Property, Plant and Equipment, including the criteria for assets
held for sale and the measurement of the disposal group at the lower of carrying amount for fair value lets cost to sell, as applicable.
The
following is a summary of the carrying amounts of the major classes of assets and liabilities that were classified as held for sale as
of March 31, 2026:
March 31,
2026
(In thousands)
Assets held for sale
Current assets:
Cash and cash equivalents
$ 7,960
Receivables
49
Inventories
36
Prepaid expenses and other
10,662
Total current assets
18,707
Non-current assets:
Property and equipment, net
408,895
Total non-current assets
408,895
Total assets held for sale
$ 427,602
Liabilities held for sale
Current liabilities:
Accounts Payable
$ 42,944
Accrued Liabilities
600
Total current liabilities
43,544
Long-term Liabilities
Asset retirement obligations
139,602
Deferred tax liabilities
120,999
Total long-term liabilities
260,601
Total liabilities held for sale
$ 304,145
Note
3. Pro Forma Balance Sheet Adjustments
The following
adjustments have been made to the accompanying unaudited pro forma condensed consolidated balance sheet as of March 31, 2026.
A. Represents the elimination of assets and liabilities related to the sale of KIPI, along with
cash proceeds and resulting gain on sale associated with the Disposition. The cash proceeds are shown as a reduction in long-term
debt.
Note
4. Pro Forma Statement of Operations Adjustments
The following
adjustments have been made to the accompanying unaudited pro forma condensed consolidated statements of operations for the three months
ended March 31, 2026, and for the year ended December 31, 2025.
B. Represents the elimination of oil revenues and expenses and related results of operations associated with the Disposition.
Note
5. Pro Forma Supplemental Oil and Natural Gas Reserve Information
The
following tables set forth certain unaudited pro forma information concerning the Company’s proved oil and natural gas reserves
for the year ended December 31, 2025, giving effect to the Disposition as if it had occurred on January 1, 2025. There are numerous uncertainties
inherent in estimating the quantities of proved reserves and projecting future rates of production and timing of development costs. Further,
the volumes considered to be commercially recoverable fluctuate with changes in prices and operating costs. The Company emphasizes that
reserve estimates are inherently imprecise and that estimates of new discoveries are more imprecise than those of currently producing
oil and natural gas properties. Accordingly, these estimates are expected to change as additional information becomes available in the
future. The estimates of reserves, and the standardized measure of future net cash flow, shown below, reflects the Company’s development
plan for such properties. The following reserve data represent estimates only and should not be construed as being precise.
Kosmos Historical
Disposition Adjustments
Pro Forma Company
Oil
Natural Gas
Total
Oil
Natural Gas
Total
Total
(MMBbl)
(Bcf)
(MMBoe)
(MMBbl)
(Bcf)
(MMBoe)
(MMBoe)
Net proved developed and undeveloped reserves at December 31, 2024
122
774
251
18
11
20
231
Extensions and discoveries
—
—
—
—
—
—
—
Production
(18 )
(37 )
(24 )
(3 )
(1 )
(3 )
(21 )
Revision in estimate
17
33
23
(3 )
(4 )
(4 )
26
Purchases of minerals-in-place
—
—
—
—
—
—
—
Net proved developed and undeveloped reserves at December 31, 2025(1)
120
770
249
12
6
13
236
Proved developed reserves
December 31, 2025
63
449
138
12
6
13
125
Proved undeveloped reserves
December 31, 2025
57
321
111
—
—
—
111
(1) The sum of proved developed
reserves and proved undeveloped reserves may not add to net proved developed and undeveloped reserves as a result of rounding.
Standardized
Measure of Discounted Future Net Cash Flows
Summarized
in the following table is information for the standardized measure of discounted cash flows relating to proved reserves as of December
31, 2025, giving effect to the Disposition. The standardized measure of discounted future net cash flows does not purport to be, nor should
it be interpreted to present, the fair value of the oil and natural gas reserves of the property. An estimate of fair value would take
into account, among other things, the recovery of reserves not presently classified as proved, the value of unproved properties, and consideration
of expected future economic and operating conditions.
The
estimates of future cash flows and future production and development costs as of December 31, 2025 are based on the unweighted arithmetic
average first-day-of-the-month price for the preceding 12-month period.
Estimated
future production of proved reserves and estimated future production and development costs of proved reserves are based on current costs
and economic conditions. All wellhead prices are held flat over the forecast period for all reserve categories. The estimated future net
cash flows are then discounted at a rate of 10%.
Kosmos
Historical
Disposition Adjustments
Pro Forma
Company
At December 31, 2025
(in millions)
Future cash inflows
$ 12,642
$ 793
$ 11,849
Future production costs
(5,130 )
(480 )
(4,650 )
Future development costs
(3,124 )
(362 )
(2,762 )
Future tax expenses
(1,074 )
(63 )
(1,011 )
Future net cash flows
$ 3,314
$ (112 )
$ 3,426
10% annual discount for estimating timing of cash flows
(1,424 )
106
(1,530 )
Standardized measure of discounted future net cash flows
$ 1,890
$ (6 )
$ 1,896
In
the foregoing determination of future cash inflows, sales prices used for gas and oil for December 31, 2025 were estimated using the average
price during the 12-month period, determined as the unweighted arithmetic average of the first-day-of-the-month price for each month.
Prices were adjusted by lease for quality, transportation fees and regional price differentials. Future costs of developing and producing
the proved gas and oil reserves reported at the end of each year shown were based on costs determined at each such year-end, assuming
the continuation of existing economic conditions.
It
is not intended that the FASB’s standardized measure of discounted future net cash flows represent the fair market value of the
Company’s proved reserves. The Company cautions that the disclosures shown are based on estimates of proved reserve quantities and
future production schedules which are inherently imprecise and subject to revision, and the 10% discount rate is arbitrary. In addition,
costs and prices as of the measurement date are used in the determinations, and no value may be assigned to probable or possible reserves.
Changes
in the standardized measure of discounted future net cash flows relating to proved oil and natural gas reserves are as follows:
Kosmos
Historical
Disposition Adjustments
Pro Forma
Company
(in millions)
Balance at December 31, 2024
$ 3,302
$ 230
$ 3,072
Purchase of minerals in place
—
—
—
Sales and transfers 2025
(581 )
(33 )
(548 )
Extensions and discoveries
—
—
—
Net changes in prices and costs
(1,948 )
(218 )
(1,730 )
Previously estimated development costs incurred during the period
208
10
198
Net changes in development costs
(212 )
(6 )
(206 )
Revisions of previous quantity estimates
388
(80 )
468
Net changes in tax expenses
244
38
206
Accretion of discount
442
34
408
Changes in timing and other
47
19
28
Balance at December 31, 2025
$ 1,890
$ (6 )
$ 1,896
Estimates
of economically recoverable oil and natural gas reserves and of future net revenues are based upon a number of variable factors and assumptions,
all of which are to some degree subjective and may vary considerably from actual results. Therefore, actual production, revenues, development
and operating expenditures may not occur as estimated. The reserve data are estimates only, are subject to many uncertainties and are
based on data gained from production histories and on assumptions as to geologic formations and other matters. Actual quantities of oil
and natural gas may differ materially from the amounts estimated.
XML — IDEA: XBRL DOCUMENT
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Filename: R1.htm · Sequence: 7
v3.26.1
Cover
Jun. 22, 2026
Cover [Abstract]
Document Type
8-K
Amendment Flag
false
Document Period End Date
Jun. 22, 2026
Entity File Number
001-35167
Entity Registrant Name
KOSMOS ENERGY LTD.
Entity Central Index Key
0001509991
Entity Tax Identification Number
98-0686001
Entity Incorporation, State or Country Code
DE
Entity Address, Address Line One
8176 Park Lane
Entity Address, City or Town
Dallas
Entity Address, State or Province
TX
Entity Address, Postal Zip Code
75231
City Area Code
214
Local Phone Number
445 9600
Written Communications
false
Soliciting Material
false
Pre-commencement Tender Offer
false
Pre-commencement Issuer Tender Offer
false
Title of 12(b) Security
Common Stock $0.01 par value
Trading Symbol
KOS
Security Exchange Name
NYSE
Entity Emerging Growth Company
false
Entity Information, Former Legal or Registered Name
Not Applicable
X
- Definition
Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.
+ References
No definition available.
+ Details
Name:
dei_AmendmentFlag
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Area code of city
+ References
No definition available.
+ Details
Name:
dei_CityAreaCode
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Cover page.
+ References
No definition available.
+ Details
Name:
dei_CoverAbstract
Namespace Prefix:
dei_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.
+ References
No definition available.
+ Details
Name:
dei_DocumentPeriodEndDate
Namespace Prefix:
dei_
Data Type:
xbrli:dateItemType
Balance Type:
na
Period Type:
duration
X
- Definition
The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.
+ References
No definition available.
+ Details
Name:
dei_DocumentType
Namespace Prefix:
dei_
Data Type:
dei:submissionTypeItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Address Line 1 such as Attn, Building Name, Street Name
+ References
No definition available.
+ Details
Name:
dei_EntityAddressAddressLine1
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Name of the City or Town
+ References
No definition available.
+ Details
Name:
dei_EntityAddressCityOrTown
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Code for the postal or zip code
+ References
No definition available.
+ Details
Name:
dei_EntityAddressPostalZipCode
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Name of the state or province.
+ References
No definition available.
+ Details
Name:
dei_EntityAddressStateOrProvince
Namespace Prefix:
dei_
Data Type:
dei:stateOrProvinceItemType
Balance Type:
na
Period Type:
duration
X
- Definition
A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2
+ Details
Name:
dei_EntityCentralIndexKey
Namespace Prefix:
dei_
Data Type:
dei:centralIndexKeyItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Indicate if registrant meets the emerging growth company criteria.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2
+ Details
Name:
dei_EntityEmergingGrowthCompany
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.
+ References
No definition available.
+ Details
Name:
dei_EntityFileNumber
Namespace Prefix:
dei_
Data Type:
dei:fileNumberItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Two-character EDGAR code representing the state or country of incorporation.
+ References
No definition available.
+ Details
Name:
dei_EntityIncorporationStateCountryCode
Namespace Prefix:
dei_
Data Type:
dei:edgarStateCountryItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Former Legal or Registered Name of an entity
+ References
No definition available.
+ Details
Name:
dei_EntityInformationFormerLegalOrRegisteredName
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2
+ Details
Name:
dei_EntityRegistrantName
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2
+ Details
Name:
dei_EntityTaxIdentificationNumber
Namespace Prefix:
dei_
Data Type:
dei:employerIdItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Local phone number for entity.
+ References
No definition available.
+ Details
Name:
dei_LocalPhoneNumber
Namespace Prefix:
dei_
Data Type:
xbrli:normalizedStringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 13e
-Subsection 4c
+ Details
Name:
dei_PreCommencementIssuerTenderOffer
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 14d
-Subsection 2b
+ Details
Name:
dei_PreCommencementTenderOffer
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Title of a 12(b) registered security.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b
+ Details
Name:
dei_Security12bTitle
Namespace Prefix:
dei_
Data Type:
dei:securityTitleItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Name of the Exchange on which a security is registered.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection d1-1
+ Details
Name:
dei_SecurityExchangeName
Namespace Prefix:
dei_
Data Type:
dei:edgarExchangeCodeItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 14a
-Subsection 12
+ Details
Name:
dei_SolicitingMaterial
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Trading symbol of an instrument as listed on an exchange.
+ References
No definition available.
+ Details
Name:
dei_TradingSymbol
Namespace Prefix:
dei_
Data Type:
dei:tradingSymbolItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Securities Act
-Number 230
-Section 425
+ Details
Name:
dei_WrittenCommunications
Namespace Prefix:
dei_
Data Type:
xbrli:booleanItemType
Balance Type:
na
Period Type:
duration