Kosmos Energy Ltd.
US ˙ NYSE ˙ US5006881065

SecurityKOS / Kosmos Energy Ltd.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership7,083,075 shares
Latest Disclosed Value $ 19,699,423
Dimensional Fund Advisors Lp reports 20.50% increase in ownership of KOS / Kosmos Energy Ltd.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 7,083,075 shares of Kosmos Energy Ltd. (US:KOS) valued at $19,690,948 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 5,878,286 shares of Kosmos Energy Ltd.. This represents a change in shares of 20.50% during the quarter. The current value of the position is $19,903,441 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)
2026-05-07 2026-03-31 13F KOSMOS ENERGY COM 500688106 7,083,075 1,204,789 20.50 19,699 269.38 0.0009
2026-02-12 2025-12-31 13F KOSMOS ENERGY COM 500688106 5,878,286 -1,733,012 -22.77 5,334 -57.79 0.0011
2025-11-12 2025-09-30 13F KOSMOS ENERGY COM 500688106 7,611,298 -2,388,987 -23.89 12,635 -26.57 0.0027
2025-08-12 2025-06-30 13F KOSMOS ENERGY COM 500688106 10,000,285 -2,389,897 -19.29 17,205 -39.09 0.0040
2025-05-13 2025-03-31 13F KOSMOS ENERGY COM 500688106 12,390,182 722,704 6.19 28,246 -29.21 0.0070
2025-02-13 2024-12-31 13F KOSMOS ENERGY COM 500688106 11,667,478 17,929 0.15 39,901 -15.01 0.0096
2024-11-07 2024-09-30 13F KOSMOS ENERGY COM 500688106 11,649,549 1,601,401 15.94 46,945 -15.67 0.0114
2024-08-09 2024-06-30 13F KOSMOS ENERGY COM 500688106 10,048,148 -46,929 -0.46 55,667 -7.48 0.0145
2024-05-10 2024-03-31 13F KOSMOS ENERGY COM 500688106 10,095,077 407,646 4.21 60,167 -7.44 0.0163
2024-02-07 2023-12-31 13F KOSMOS ENERGY COM 500688106 9,687,431 761,657 8.53 65,005 -10.97 0.0190
2023-11-09 2023-09-30 13F KOSMOS ENERGY COM 500688106 8,925,774 181,383 2.07 73,016 39.41 0.0239
2023-08-09 2023-06-30 13F KOSMOS ENERGY COM 500688106 8,744,391 620,346 7.64 52,374 -13.35 0.0167
2023-05-12 2023-03-31 13F KOSMOS ENERGY COM 500688106 8,124,045 549,322 7.25 60,441 125,818.75 0.0204
2023-02-09 2022-12-31 13F KOSMOS ENERGY COM 500688106 7,574,723 -330,263 -4.18 48 -99.88 0.0142
2022-11-10 2022-09-30 13F KOSMOS ENERGY COM 500688106 7,904,986 -175,049 -2.17 40,875 -18.28 0.0157
2022-08-12 2022-06-30 13F KOSMOS ENERGY COM 500688106 8,080,035 1,387,671 20.74 50,019 3.97 0.0179
2022-05-13 2022-03-31 13F KOSMOS ENERGY COM 500688106 6,692,364 578,305 9.46 48,110 127.43 0.0148
2022-02-09 2021-12-31 13F KOSMOS ENERGY COM 500688106 6,114,059 43,251 0.71 21,154 17.72 0.0064
2021-11-12 2021-09-30 13F KOSMOS ENERGY COM 500688106 6,070,808 -1,220,190 -16.74 17,969 -28.77 0.0058
2021-08-12 2021-06-30 13F KOSMOS ENERGY COM 500688106 7,290,998 1,139,528 18.52 25,225 33.57 0.0080
2021-05-14 2021-03-31 13F KOSMOS ENERGY COM 500688106 6,151,470 2,769,566 81.89 18,885 137.55 0.0062
2021-03-08 2020-12-31 13F/A-2 KOSMOS ENERGY COM 500688106 3,381,904 -983,617 -22.53 7,950 86.66 0.0029
2021-02-11 2020-12-31 13F KOSMOS ENERGY COM 500688106 3,381,904 -983,617 7,950 2,871.1174
2020-11-12 2020-09-30 13F KOSMOS ENERGY COM 500688106 4,365,521 -2,138,676 -32.88 4,259 -60.55 0.0018
2020-08-13 2020-06-30 13F KOSMOS ENERGY COM 500688106 6,504,197 -4,722,055 -42.06 10,797 7.40 0.0047
2020-05-14 2020-03-31 13F KOSMOS ENERGY COM 500688106 11,226,252 -995,407 -8.14 10,053 -85.57 0.0052
2020-02-14 2019-12-31 13F KOSMOS ENERGY COM 500688106 12,221,659 301,491 2.53 69,659 -6.35 0.0254
2019-11-12 2019-09-30 13F KOSMOS ENERGY COM 500688106 11,920,168 250,848 2.15 74,384 1.66 0.0289
2019-08-13 2019-06-30 13F KOSMOS ENERGY COM 500688106 11,669,320 793,701 7.30 73,166 7.99 0.0284
2019-08-12 2019-03-31 13F/A-2 KOSMOS ENERGY COM 500688106 10,875,619 363,749 3.46 67,752 58.36 0.0270
2019-05-10 2019-03-31 13F KOSMOS ENERGY COM 500688106 10,875,619 363,749 67,752
2019-02-26 2018-12-31 13F/A-1 KOSMOS ENERGY COM 500688106 10,511,870 -316,828 -2.93 42,783 -57.74 0.0194
2019-02-13 2018-12-31 13F KOSMOS ENERGY COM 500688106 149,230 -10,679,468 607
2018-11-13 2018-09-30 13F KOSMOS ENERGY CLA G5315B107 10,828,698 107,209 1.00 101,247 14.19 0.0385
2018-08-10 2018-06-30 13F KOSMOS ENERGY CLA G5315B107 10,721,489 584,978 5.77 88,667 38.85 0.0353
2018-05-11 2018-03-31 13F KOSMOS ENERGY CLA G5315B107 10,136,511 1,810,985 21.75 63,860 11.97 0.0266
2018-02-12 2017-12-31 13F KOSMOS ENERGY CLA G5315B107 8,325,526 237,507 2.94 57,031 -11.42 0.0236
2017-11-13 2017-09-30 13F KOSMOS ENERGY CLA G5315B107 8,088,019 979,199 13.77 64,381 41.29 0.0281
2017-08-11 2017-06-30 13F KOSMOS ENERGY CLA G5315B107 7,108,820 1,755,918 32.80 45,566 27.83 0.0210
2017-05-12 2017-03-31 13F KOSMOS ENERGY CLA G5315B107 5,352,902 1,069,548 24.97 35,646 18.71 0.0170
2017-02-09 2016-12-31 13F KOSMOS ENERGY CLA G5315B107 4,283,354 89,212 2.13 30,027 11.69 0.0150
2016-11-10 2016-09-30 13F KOSMOS ENERGY CLA G5315B107 4,194,142 922,848 28.21 26,884 50.80 0.0145
2016-08-09 2016-06-30 13F KOSMOS ENERGY CLA G5315B107 3,271,294 915,110 38.84 17,828 30.03 0.0103
2016-05-13 2016-03-31 13F KOSMOS ENERGY CLA G5315B107 2,356,184 194,273 8.99 13,711 21.97 0.0082
2016-02-10 2015-12-31 13F KOSMOS ENERGY CLA G5315B107 2,161,911 221,617 11.42 11,241 3.83 0.0070
2015-11-13 2015-09-30 13F KOSMOS ENERGY CLA G5315B107 1,940,294 343,032 21.48 10,826 -19.60 0.0071
2015-08-14 2015-06-30 13F KOSMOS ENERGY CLA G5315B107 1,597,262 505,236 46.27 13,465 55.88 0.0082
2015-05-14 2015-03-31 13F KOSMOS ENERGY CLA G5315B107 1,092,026 224,785 25.92 8,638 18.72 0.0055
2015-02-06 2014-12-31 13F KOSMOS ENERGY CLA G5315B107 867,241 311,896 56.16 7,276 31.50 0.0048
2014-11-13 2014-09-30 13F KOSMOS ENERGY CLA G5315B107 555,345 234,453 73.06 5,533 53.57 0.0039
2014-08-08 2014-06-30 13F KOSMOS ENERGY CLA G5315B107 320,892 46,021 16.74 3,603 19.15 0.0025
2014-05-14 2014-03-31 13F KOSMOS ENERGY CLA G5315B107 274,871 53,267 24.04 3,024 22.08 0.0023
2014-02-12 2013-12-31 13F KOSMOS ENERGY CLA G5315B107 221,604 64,866 41.38 2,477 53.66 0.0019
2013-11-13 2013-09-30 13F KOSMOS ENERGY CLA G5315B107 156,738 18,948 13.75 1,612 15.06 0.0014
2013-08-15 2013-06-30 13F KOSMOS ENERGY CLA G5315B107 137,790 137,790 1,401 0.0013
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.