Kosmos Energy Ltd.
US ˙ NYSE ˙ US5006881065

SecurityKOS / Kosmos Energy Ltd.
InstitutionEthic Inc.
Latest Disclosed Ownership201,480 shares
Latest Disclosed Value $ 560,114
Ethic Inc. reports 35.87% decrease in ownership of KOS / Kosmos Energy Ltd.

On April 27, 2026 - Ethic Inc. filed a 13F-HR form disclosing ownership of 201,480 shares of Kosmos Energy Ltd. (US:KOS) valued at $560,114 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 314,160 shares of Kosmos Energy Ltd.. This represents a change in shares of -35.87% during the quarter. The current value of the position is $602,425 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-27 2026-03-31 13F KOSMOS ENERGY COM 500688106 201,480 -112,680 -35.87 560 96.49 0.0085
2026-02-03 2025-12-31 13F KOSMOS ENERGY COM 500688106 314,160 87,481 38.59 285 -24.20 0.0044
2025-10-17 2025-09-30 13F KOSMOS ENERGY COM 500688106 226,679 -16,022 -6.60 376 -15.32 0.0062
2025-07-30 2025-06-30 13F KOSMOS ENERGY COM 500688106 242,701 37,830 18.47 444 -3.48 0.0080
2025-05-13 2025-03-31 13F KOSMOS ENERGY COM 500688106 204,871 72,493 54.76 461 1.77 0.0093
2025-02-14 2024-12-31 13F KOSMOS ENERGY COM 500688106 132,378 57,877 77.69 453 1.80 0.0091
2024-11-13 2024-09-30 13F KOSMOS ENERGY COM 500688106 74,501 10,104 15.69 444 24.72 0.0112
2024-08-13 2024-06-30 13F KOSMOS ENERGY COM 500688106 64,397 -10,104 -13.56 357 -19.82 0.0084
2024-05-13 2024-03-31 13F KOSMOS ENERGY COM 500688106 74,501 17,063 29.71 444 15.32 0.0112
2024-02-14 2023-12-31 13F KOSMOS ENERGY COM 500688106 57,438 3,120 5.74 385 -13.29 0.0114
2023-11-14 2023-09-30 13F KOSMOS ENERGY COM 500688106 54,318 12,322 29.34 444 76.89 0.0156
2023-08-14 2023-06-30 13F KOSMOS ENERGY COM 500688106 41,996 4,779 12.84 252 -9.06 0.0093
2023-05-12 2023-03-31 13F KOSMOS ENERGY COM 500688106 37,217 -4,781 -11.38 277 3.37 0.0112
2023-02-14 2022-12-31 13F KOSMOS ENERGY COM 500688106 41,998 3,931 10.33 267 35.53 0.0144
2022-11-14 2022-09-30 13F KOSMOS ENERGY COM 500688106 38,067 -4,170 -9.87 197 -24.52 0.0134
2022-08-10 2022-06-30 13F KOSMOS ENERGY COM 500688106 42,237 -14,391 -25.41 261 -35.87 0.0182
2022-05-16 2022-03-31 13F KOSMOS ENERGY COM 500688106 56,628 35,052 162.46 407 442.67 0.0281
2022-02-14 2021-12-31 13F KOSMOS ENERGY COM 500688106 21,576 21,576 75 0.0058
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.