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Pay vs Performance Disclosure - USD ($)

12 Months Ended

Dec. 31, 2025

Dec. 31, 2024

Dec. 31, 2023

Dec. 31, 2022

Dec. 31, 2021

Pay vs Performance Disclosure

Pay vs Performance Disclosure, Table

2025 Pay Versus Performance

The following table sets forth the compensation for our Principal Executive Officer (“PEO”) and the average compensation for our other named executive officers, both as reported in the Summary Compensation Table and with certain adjustments to reflect the “compensation actually paid” to such individuals, as defined under SEC rules, for each of 2025, 2024, 2023, 2022 and 2021. The table also provides information on our cumulative total shareholder return (“TSR”), the cumulative TSR of our peer group, Net Income and EBITDAX over such years in accordance with SEC rules.


	(a)			(b)			(c)			(d)			(e)			(f)			(g)			(h)			(i)
																Value of Initial Fixed $100 Investment Based on:
	Year			Summary Compensation Table Total for PEO⁽¹⁾ ($)			Compensation Actually Paid to PEO⁽²⁾ ($)			Average Summary Compensation Table Total for Non-PEO NEOs⁽¹⁾ ($)			Average Compensation Actually Paid to Non-PEO NEOs⁽²⁾ ($)			Total Shareholder Return⁽³⁾ ($)			Peer Group Total Shareholder Return⁽³⁾ ($)			Net Income (Loss) ($)			EBITDAX⁽⁴⁾ ($)
	2025			4,976,958			(2,105,215)			2,111,502			(544,509)			38.61			163.41			(699,786,000)			542,776,000
	2024			8,580,195			(5,423,933)			2,806,045			(1,838,477)			61.04			97.57			189,851,000			1,070,355,000
	2023			9,697,269			11,393,439			4,253,582			5,141,231			119.76			118.12			213,520,000			1,238,151,000
	2022			7,872,017			16,980,363			3,557,021			7,877,196			113.51			117.02			226,551,000			1,436,342,000
	2021			6,237,930			7,820,096			3,353,927			4,164,658			61.75			92.13			(77,836,000)			969,136,000

(1)

Compensation for our PEO, Mr. Inglis, reflects the amounts reported in the “Summary Compensation Table” for the respective years. Average compensation for non-PEO NEOs includes the following named executive officers: (i) for 2025, Messrs. Shah, Ball and Marion; (ii) for 2024, Messrs. Shah, Ball, Marion and Doughty; (iii) in each of 2023, 2022 and 2021, Messrs. Shah, Ball, Clark and Doughty.

(2)

Compensation “actually paid” for the PEO and average compensation “actually paid” for our non-PEO NEOs in each of 2025, 2024, 2023, 2022 and 2021 reflects the respective amounts set forth in columns (b) and (d) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amounts reflected in columns (b) and (d) of the table above do not reflect the actual amount of compensation earned by or paid to the PEO and our other NEOs during the applicable year. For information regarding the decisions made by our Compensation Committee in regards to the PEO’s and our other NEOs’ compensation for 2025, see “Compensation Discussion and Analysis—2025 Key Compensation Decisions”. Fair values of equity awards set forth in the table below are computed in accordance with FASB ASC Topic 718 as of the end of the respective fiscal year, other than fair values of equity awards that vest in the covered year, which are valued as of the applicable vesting date. There were no adjustments made for the following items as they were not applicable in any of 2025, 2024, 2023, 2022 or 2021: (i) awards that were granted and vested during the same year, (ii) incremental fair value of options/SARs modified during the year, (iii) reported change in the actuarial present value of pension benefits or (iv) increases for service cost of pension plans.


	Adjustments			2025						2024						2023						2022						2021
				PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)
	Summary Compensation Table Total:			4,976,958			2,111,502			8,580,195			2,806,045			9,697,269			4,253,582			7,872,017			3,557,021			6,237,930			3,353,927
	Deduct the grant date fair value of the equity awards for each applicable year, as reported in the “Stock Awards” column in the Summary Compensation Table			(3,715,420)			(1,376,806)			(6,481,444)			(1,673,182)			(7,599,631)			(2,938,349)			(4,859,920)			(2,153,552)			(3,658,925)			(1,888,865)
	Add the fair value as of year-end for awards granted during the year			504,464			125,091			2,244,012			586,951			6,261,171			2,420,842			7,071,200			3,133,426			5,167,950			2,667,728
	Add the year-over-year increase (decrease) in fair value of unvested awards granted in prior years			(3,643,692)			(1,274,675)			(8,672,115)			(3,122,383)			2,117,863			1,017,590			6,447,224			3,146,405			23,426			12,272
	Add the increase (decrease) in fair value from prior fiscal year-end for awards that vested during the year			(227,525)			(87,138)			(1,094,581)			(435,908)			897,266			379,477			381,729			164,585			(3,737)			(1,349)
	Add the increase based on dividends or other earnings paid during the year			—			—			—			—			19,501			8,089			68,113			29,311			53,452			20,945
	Deduct the fair value of awards granted during prior fiscal year that were forfeited during the applicable fiscal year, determined as of prior fiscal year-end			—			(42,482)			—			—			—			—			—			—			—			—
	Compensation Actually Paid:			(2,105,215)			(544,509)			(5,423,933)			(1,838,477)			11,393,439			5,141,231			16,980,363			7,877,196			7,820,096			4,164,658

(3)

TSR is cumulative for the measurement periods beginning on December 31, 2020 and ending on December 31 of each of 2025, 2024, 2023, 2022 and 2021, respectively, calculated in accordance with Item 201(e) of Regulation S-K. The peer group for purposes of this table consists of the performance peer companies utilized for our PSUs, as described in our Compensation Discussion & Analysis. These companies were selected because they are the oil and gas exploration and production companies most like Kosmos in terms of geographic reach, development stage, and who potentially compete with the Company for executive talent.

(4)

EBITDAX is a non-GAAP financial measure used by management and external users of the Company's consolidated financial statements, such as industry analysts, investors, lenders and rating agencies. The Company defines “EBITDAX” as Net income (loss) plus (i) exploration expense, (ii) depletion, depreciation and amortization expense, (iii) equity based compensation expense, (iv) unrealized (gain) loss on commodity derivatives (realized losses are deducted and realized gains are added back), (v) (gain) loss on sale of oil and gas properties, (vi) interest (income) expense, (vii) income taxes, (viii) debt modifications and extinguishments, (ix) doubtful accounts expense and (x) similar other material items which management believes affect the comparability of operating results. EBITDAX for FY 2021 reflects pro forma adjustments made to reflect the interests acquired in Ghana during the year as part of the Oxy Ghana acquisition. EBITDAX for FY 2022 reflects pro forma adjustments made to reflect the interests sold in Ghana that were associated with the Ghana pre-emption and the acquisition of additional interests in Kodiak during the year.

Company Selected Measure Name

EBITDAX

Named Executive Officers, Footnote

(1)

Compensation for our PEO, Mr. Inglis, reflects the amounts reported in the “Summary Compensation Table” for the respective years. Average compensation for non-PEO NEOs includes the following named executive officers: (i) for 2025, Messrs. Shah, Ball and Marion; (ii) for 2024, Messrs. Shah, Ball, Marion and Doughty; (iii) in each of 2023, 2022 and 2021, Messrs. Shah, Ball, Clark and Doughty.

Peer Group Issuers, Footnote

(3)

TSR is cumulative for the measurement periods beginning on December 31, 2020 and ending on December 31 of each of 2025, 2024, 2023, 2022 and 2021, respectively, calculated in accordance with Item 201(e) of Regulation S-K. The peer group for purposes of this table consists of the performance peer companies utilized for our PSUs, as described in our Compensation Discussion & Analysis. These companies were selected because they are the oil and gas exploration and production companies most like Kosmos in terms of geographic reach, development stage, and who potentially compete with the Company for executive talent.

PEO Total Compensation Amount

$ 4,976,958

$ 8,580,195

$ 9,697,269

$ 7,872,017

$ 6,237,930

PEO Actually Paid Compensation Amount

$ (2,105,215)

(5,423,933)

11,393,439

16,980,363

7,820,096

Adjustment To PEO Compensation, Footnote

(2)

Compensation “actually paid” for the PEO and average compensation “actually paid” for our non-PEO NEOs in each of 2025, 2024, 2023, 2022 and 2021 reflects the respective amounts set forth in columns (b) and (d) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amounts reflected in columns (b) and (d) of the table above do not reflect the actual amount of compensation earned by or paid to the PEO and our other NEOs during the applicable year. For information regarding the decisions made by our Compensation Committee in regards to the PEO’s and our other NEOs’ compensation for 2025, see “Compensation Discussion and Analysis—2025 Key Compensation Decisions”. Fair values of equity awards set forth in the table below are computed in accordance with FASB ASC Topic 718 as of the end of the respective fiscal year, other than fair values of equity awards that vest in the covered year, which are valued as of the applicable vesting date. There were no adjustments made for the following items as they were not applicable in any of 2025, 2024, 2023, 2022 or 2021: (i) awards that were granted and vested during the same year, (ii) incremental fair value of options/SARs modified during the year, (iii) reported change in the actuarial present value of pension benefits or (iv) increases for service cost of pension plans.


	Adjustments			2025						2024						2023						2022						2021
				PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)
	Summary Compensation Table Total:			4,976,958			2,111,502			8,580,195			2,806,045			9,697,269			4,253,582			7,872,017			3,557,021			6,237,930			3,353,927
	Deduct the grant date fair value of the equity awards for each applicable year, as reported in the “Stock Awards” column in the Summary Compensation Table			(3,715,420)			(1,376,806)			(6,481,444)			(1,673,182)			(7,599,631)			(2,938,349)			(4,859,920)			(2,153,552)			(3,658,925)			(1,888,865)
	Add the fair value as of year-end for awards granted during the year			504,464			125,091			2,244,012			586,951			6,261,171			2,420,842			7,071,200			3,133,426			5,167,950			2,667,728
	Add the year-over-year increase (decrease) in fair value of unvested awards granted in prior years			(3,643,692)			(1,274,675)			(8,672,115)			(3,122,383)			2,117,863			1,017,590			6,447,224			3,146,405			23,426			12,272
	Add the increase (decrease) in fair value from prior fiscal year-end for awards that vested during the year			(227,525)			(87,138)			(1,094,581)			(435,908)			897,266			379,477			381,729			164,585			(3,737)			(1,349)
	Add the increase based on dividends or other earnings paid during the year			—			—			—			—			19,501			8,089			68,113			29,311			53,452			20,945
	Deduct the fair value of awards granted during prior fiscal year that were forfeited during the applicable fiscal year, determined as of prior fiscal year-end			—			(42,482)			—			—			—			—			—			—			—			—
	Compensation Actually Paid:			(2,105,215)			(544,509)			(5,423,933)			(1,838,477)			11,393,439			5,141,231			16,980,363			7,877,196			7,820,096			4,164,658

Non-PEO NEO Average Total Compensation Amount

$ 2,111,502

2,806,045

4,253,582

3,557,021

3,353,927

Non-PEO NEO Average Compensation Actually Paid Amount

$ (544,509)

(1,838,477)

5,141,231

7,877,196

4,164,658

Adjustment to Non-PEO NEO Compensation Footnote

(2)

Compensation “actually paid” for the PEO and average compensation “actually paid” for our non-PEO NEOs in each of 2025, 2024, 2023, 2022 and 2021 reflects the respective amounts set forth in columns (b) and (d) of the table above, adjusted as set forth in the table below, as determined in accordance with SEC rules. The dollar amounts reflected in columns (b) and (d) of the table above do not reflect the actual amount of compensation earned by or paid to the PEO and our other NEOs during the applicable year. For information regarding the decisions made by our Compensation Committee in regards to the PEO’s and our other NEOs’ compensation for 2025, see “Compensation Discussion and Analysis—2025 Key Compensation Decisions”. Fair values of equity awards set forth in the table below are computed in accordance with FASB ASC Topic 718 as of the end of the respective fiscal year, other than fair values of equity awards that vest in the covered year, which are valued as of the applicable vesting date. There were no adjustments made for the following items as they were not applicable in any of 2025, 2024, 2023, 2022 or 2021: (i) awards that were granted and vested during the same year, (ii) incremental fair value of options/SARs modified during the year, (iii) reported change in the actuarial present value of pension benefits or (iv) increases for service cost of pension plans.


	Adjustments			2025						2024						2023						2022						2021
				PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)			PEO ($)			Average non- PEO NEOs ($)
	Summary Compensation Table Total:			4,976,958			2,111,502			8,580,195			2,806,045			9,697,269			4,253,582			7,872,017			3,557,021			6,237,930			3,353,927
	Deduct the grant date fair value of the equity awards for each applicable year, as reported in the “Stock Awards” column in the Summary Compensation Table			(3,715,420)			(1,376,806)			(6,481,444)			(1,673,182)			(7,599,631)			(2,938,349)			(4,859,920)			(2,153,552)			(3,658,925)			(1,888,865)
	Add the fair value as of year-end for awards granted during the year			504,464			125,091			2,244,012			586,951			6,261,171			2,420,842			7,071,200			3,133,426			5,167,950			2,667,728
	Add the year-over-year increase (decrease) in fair value of unvested awards granted in prior years			(3,643,692)			(1,274,675)			(8,672,115)			(3,122,383)			2,117,863			1,017,590			6,447,224			3,146,405			23,426			12,272
	Add the increase (decrease) in fair value from prior fiscal year-end for awards that vested during the year			(227,525)			(87,138)			(1,094,581)			(435,908)			897,266			379,477			381,729			164,585			(3,737)			(1,349)
	Add the increase based on dividends or other earnings paid during the year			—			—			—			—			19,501			8,089			68,113			29,311			53,452			20,945
	Deduct the fair value of awards granted during prior fiscal year that were forfeited during the applicable fiscal year, determined as of prior fiscal year-end			—			(42,482)			—			—			—			—			—			—			—			—
	Compensation Actually Paid:			(2,105,215)			(544,509)			(5,423,933)			(1,838,477)			11,393,439			5,141,231			16,980,363			7,877,196			7,820,096			4,164,658

Compensation Actually Paid vs. Total Shareholder Return

The following graph compares the compensation actually paid to our PEO, the average of the compensation actually paid to our remaining NEOs and the cumulative TSR performance of our common stock with the TSR performance of our peer group. The graph below shows a connection between compensation actually paid and total shareholder return for Kosmos and the peer group.

Compensation Actually Paid vs. Net Income

The following graph compares the compensation actually paid to our PEO and the average of the compensation actually paid to our remaining NEOs with net income.

Compensation Actually Paid vs. Company Selected Measure

The following graph compares the compensation actually paid to our PEO and the average of the compensation actually paid to our remaining NEOs with EBITDAX. The graph below shows a connection between compensation actually paid and EBITDAX, the most important financial metric for linking Kosmos financial performance and compensation.

Total Shareholder Return Vs Peer Group

The following graph compares the compensation actually paid to our PEO, the average of the compensation actually paid to our remaining NEOs and the cumulative TSR performance of our common stock with the TSR performance of our peer group. The graph below shows a connection between compensation actually paid and total shareholder return for Kosmos and the peer group.

Tabular List, Table

The Company considers the following financial measures to be the most important financial performance measures used to link company performance to the executive compensation actually paid to our PEO and our other named executive officers during the last fiscal year:


	Financial Measures			Company Selected Measure
	EBITDAX			✔
	Free Cash Flow
	Capital Expenditures

These financial measures were selected from amongst the Company’s “key performance indicators” (which we refer to as “KPIs”), utilized to determine annual cash bonus payments for our named executive officers under our annual cash bonus program. The KPIs are established by the Compensation Committee at the beginning of each year, are derived from our strategic and operational plan and demonstrate year-over-year improvement. The Company believes EBITDAX is the most important financial performance measure utilized in our compensation program to link pay with compensation actually received by our named executive

officers for 2025 (and, therefore, is our Company Selected Measure for the Pay Versus Performance Table) because it best reflects the Company’s overall financial performance for the year, both on an absolute basis and with respect to other companies in the oil and gas sector.

Total Shareholder Return Amount

$ 38.61

61.04

119.76

113.51

61.75

Peer Group Total Shareholder Return Amount

163.41

97.57

118.12

117.02

92.13

Net Income (Loss)

$ (699,786,000)

$ 189,851,000

$ 213,520,000

$ 226,551,000

$ (77,836,000)

Company Selected Measure Amount

542,776,000

1,070,355,000

1,238,151,000

1,436,342,000

969,136,000

Mr. Inglis

Mr. Inglis

Mr. Inglis

Mr. Inglis

Mr. Inglis

Pay vs Performance Disclosure

EBITDAX

Non-GAAP Measure Description

(4)

EBITDAX is a non-GAAP financial measure used by management and external users of the Company's consolidated financial statements, such as industry analysts, investors, lenders and rating agencies. The Company defines “EBITDAX” as Net income (loss) plus (i) exploration expense, (ii) depletion, depreciation and amortization expense, (iii) equity based compensation expense, (iv) unrealized (gain) loss on commodity derivatives (realized losses are deducted and realized gains are added back), (v) (gain) loss on sale of oil and gas properties, (vi) interest (income) expense, (vii) income taxes, (viii) debt modifications and extinguishments, (ix) doubtful accounts expense and (x) similar other material items which management believes affect the comparability of operating results. EBITDAX for FY 2021 reflects pro forma adjustments made to reflect the interests acquired in Ghana during the year as part of the Oxy Ghana acquisition. EBITDAX for FY 2022 reflects pro forma adjustments made to reflect the interests sold in Ghana that were associated with the Ghana pre-emption and the acquisition of additional interests in Kodiak during the year.

Pay vs Performance Disclosure

Free Cash Flow

Pay vs Performance Disclosure

Capital Expenditures

PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

$ (3,715,420)

$ (6,481,444)

$ (7,599,631)

$ (4,859,920)

$ (3,658,925)

PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

504,464

2,244,012

6,261,171

7,071,200

5,167,950

PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

(3,643,692)

(8,672,115)

2,117,863

6,447,224

23,426

PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

(227,525)

(1,094,581)

897,266

381,729

(3,737)

PEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

0

0

0

0

0

PEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

0

0

19,501

68,113

53,452

Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

(1,376,806)

(1,673,182)

(2,938,349)

(2,153,552)

(1,888,865)

Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

125,091

586,951

2,420,842

3,133,426

2,667,728

Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

(1,274,675)

(3,122,383)

1,017,590

3,146,405

12,272

Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

(87,138)

(435,908)

379,477

164,585

(1,349)

Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

(42,482)

0

0

0

0

Non-PEO NEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

$ 0

$ 0

$ 8,089

$ 29,311

$ 20,945