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Kosmos Energy Ltd. (KOS) institutional ownership

Latest close $2.17 Jul 9, 2026
Market cap$1.0B 52-week range SectorEnergy
Funds holding · Q1 2026
255
reported KOS position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net bought $172M
164 buyers · 91 sellers

Kosmos Energy Ltd. (KOS) price and institutional activity

Dates

Q1 2026

$256M bought by 164 investors
Two Sigma Investments, LP$28MD. E. Shaw & Co., Inc.$27M +162 more
$84M sold by 91 investors
Grantham, Mayo, van Otterloo & Co. LLC-$31MAmerican Century Companies Inc-$21M +89 more
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Bought Sold Totals per quarter; hover a bar for the names.

Kosmos Energy Ltd. (KOS) institutional activity · 255

Investor Type Est. change Change Δ Own Date
Grantham, Mayo, van Otterloo & Co. LLC Reduced· Q1 2026 −$31M −16.5M −47.4% Q1 2026
Two Sigma Investments, LP · Added +$28M
Change +14.8M Δ Own +384.5% Date Q1 2026
Two Sigma Investments, LP Added· Q1 2026 +$28M +14.8M +384.5% Q1 2026
D. E. Shaw & Co., Inc. · Added +$27M
Change +14.4M Δ Own +241.7% Date Q1 2026
D. E. Shaw & Co., Inc. Added· Q1 2026 +$27M +14.4M +241.7% Q1 2026
American Century Companies Inc · Reduced −$21M
Change −11.2M Date Q1 2026
American Century Companies Inc Reduced· Q1 2026 −$21M −11.2M Q1 2026
Invesco Ltd. · Added +$17M
Change +9.3M Δ Own +496.0% Date Q1 2026
Invesco Ltd. Added· Q1 2026 +$17M +9.3M +496.0% Q1 2026
Davidson Kempner Capital Management LP · New +$16M
Change +8.4M Date Q1 2026
Davidson Kempner Capital Management LP New· Q1 2026 +$16M +8.4M Q1 2026
State Street · Added +$15M
Change +7.8M Date Q1 2026
State Street Added· Q1 2026 +$15M +7.8M Q1 2026
Boston Partners · New +$8.9M
Change +4.8M Date Q1 2026
Boston Partners New· Q1 2026 +$8.9M +4.8M Q1 2026
Vanguard · Added +$8.0M
Change +4.2M Date Q1 2026
Vanguard Added· Q1 2026 +$8.0M +4.2M Q1 2026
Monaco Asset Management Sam · New +$7.6M
Change +4.0M Date Q1 2026
Monaco Asset Management Sam New· Q1 2026 +$7.6M +4.0M Q1 2026
Renaissance Technologies LLC Added· Q1 2026 +$6.9M +3.7M +224.0% Q1 2026
Ghisallo Capital Management LLC · New +$6.9M
Change +3.7M Date Q1 2026
Ghisallo Capital Management LLC New· Q1 2026 +$6.9M +3.7M Q1 2026
Covalis Capital LLP · New +$5.9M
Change +3.2M Date Q1 2026
Covalis Capital LLP New· Q1 2026 +$5.9M +3.2M Q1 2026
Hrt Financial LP · New +$5.1M
Change +2.7M Date Q1 2026
Hrt Financial LP New· Q1 2026 +$5.1M +2.7M Q1 2026
Goldman Sachs Group Inc · Added +$4.7M
Change +2.5M Date Q1 2026
Goldman Sachs Group Inc Added· Q1 2026 +$4.7M +2.5M Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 255

Famous investor activity in Kosmos Energy Ltd. (KOS)

Kosmos Energy Ltd. (KOS) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Inglis Andrew G. · Director Sell −$176K
Price $2.05 Qty −86K Owned 4.7M ΔOwn −1.8% Trade date Jul 2, 2026 Filed date Jul 6, 2026
Inglis Andrew G. Director Sell $2.05 −86K −$176K 4.7M −1.8% Jul 2, 2026 Jul 6, 2026
Shah Nealesh D. · Officer Sell −$94K
Price $2.05 Qty −46K Owned 1.9M ΔOwn −2.3% Trade date Jul 2, 2026 Filed date Jul 6, 2026
Shah Nealesh D. Officer Sell $2.05 −46K −$94K 1.9M −2.3% Jul 2, 2026 Jul 6, 2026
Marion Josh R. · Officer Sell −$51K
Price $2.05 Qty −25K Owned 233K ΔOwn −9.7% Trade date Jul 2, 2026 Filed date Jul 6, 2026
Marion Josh R. Officer Sell $2.05 −25K −$51K 233K −9.7% Jul 2, 2026 Jul 6, 2026
Glass Ronald W. · Officer Sell −$25K
Price $2.05 Qty −12K Owned 359K ΔOwn −3.3% Trade date Jul 2, 2026 Filed date Jul 6, 2026
Glass Ronald W. Officer Sell $2.05 −12K −$25K 359K −3.3% Jul 2, 2026 Jul 6, 2026
Inglis Andrew G. · Director Grant (A) 221K
Owned 4.8M ΔOwn +4.9% Trade date Jul 1, 2026 Filed date Jul 6, 2026
Inglis Andrew G. Director Grant (A) 221K 4.8M +4.9% Jul 1, 2026 Jul 6, 2026
Shah Nealesh D. · Officer Grant (A) 118K
Owned 2.0M ΔOwn +6.4% Trade date Jul 1, 2026 Filed date Jul 6, 2026
Shah Nealesh D. Officer Grant (A) 118K 2.0M +6.4% Jul 1, 2026 Jul 6, 2026
Marion Josh R. · Officer Grant (A) 64K
Owned 258K ΔOwn +33.1% Trade date Jul 1, 2026 Filed date Jul 6, 2026
Marion Josh R. Officer Grant (A) 64K 258K +33.1% Jul 1, 2026 Jul 6, 2026
Glass Ronald W. · Officer Grant (A) 31K
Owned 371K ΔOwn +9.2% Trade date Jul 1, 2026 Filed date Jul 6, 2026
Glass Ronald W. Officer Grant (A) 31K 371K +9.2% Jul 1, 2026 Jul 6, 2026
Grant John Douglas Kelso · Director Grant (A) $170K
Price $2.74 Qty 62K Owned 144K Trade date May 28, 2026 Filed date May 29, 2026
Grant John Douglas Kelso Director Grant (A) $2.74 62K $170K 144K May 28, 2026 May 29, 2026
Sterin Steven · Director Grant (A) $170K
Price $2.74 Qty 62K Owned 393K Trade date May 28, 2026 Filed date May 29, 2026
Sterin Steven Director Grant (A) $2.74 62K $170K 393K May 28, 2026 May 29, 2026
Franklin Roy A. · Director Sell −$119K
Price $2.73 Qty −43K Owned 151K Trade date May 28, 2026 Filed date May 29, 2026
Franklin Roy A. Director Sell $2.73 −43K −$119K 151K May 28, 2026 May 29, 2026
Franklin Roy A. · Director Grant (A) $170K
Price $2.74 Qty 62K Owned 213K Trade date May 28, 2026 Filed date May 29, 2026
Franklin Roy A. Director Grant (A) $2.74 62K $170K 213K May 28, 2026 May 29, 2026
Stice J. Michael · Director Grant (A) $170K
Price $2.74 Qty 62K Owned 270K Trade date May 28, 2026 Filed date May 29, 2026
Stice J. Michael Director Grant (A) $2.74 62K $170K 270K May 28, 2026 May 29, 2026
Goodwin Deanna L. · Director Grant (A) $170K
Price $2.74 Qty 62K Owned 288K Trade date May 28, 2026 Filed date May 29, 2026
Goodwin Deanna L. Director Grant (A) $2.74 62K $170K 288K May 28, 2026 May 29, 2026
Moraeus Hanssen Maria · Director Grant (A) $170K
Price $2.74 Qty 62K Owned 224K Trade date May 28, 2026 Filed date May 29, 2026
Moraeus Hanssen Maria Director Grant (A) $2.74 62K $170K 224K May 28, 2026 May 29, 2026
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Kosmos Energy Ltd. (KOS) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 48.5M
% of shares outstanding 10.3% Filing date Mar 7, 2024
BlackRock Inc. 48.5M 10.3% Mar 7, 2024
FMR LLC 33.7M
% of shares outstanding 7.1% Filing date Aug 12, 2024
FMR LLC 33.7M 7.1% Aug 12, 2024
Blackrock, Inc. 39.8M
% of shares outstanding 6.7% Filing date Apr 24, 2026
Blackrock, Inc. 39.8M 6.7% Apr 24, 2026
Cobas Asset Management, Sgiic, S.A. 24.8M
% of shares outstanding 5.2% Filing date Apr 23, 2025
Cobas Asset Management, Sgiic, S.A. 24.8M 5.2% Apr 23, 2025
Hotchkis and Wiley Capital Management, LLC 21.2M
% of shares outstanding 4.4% Filing date Aug 13, 2025
Hotchkis and Wiley Capital Management, LLC 21.2M 4.4% Aug 13, 2025
State Street Corp
% of shares outstanding 3.9% Filing date Jan 22, 2024
State Street Corp 3.9% Jan 22, 2024
Grantham, Mayo, van Otterloo & Co. LLC 18.3M
% of shares outstanding 3.2% Filing date May 1, 2026
Grantham, Mayo, van Otterloo & Co. LLC 18.3M 3.2% May 1, 2026
American Century Investment Management, Inc. 11.3M
% of shares outstanding 2.4% Filing date Feb 13, 2026
American Century Investment Management, Inc. 11.3M 2.4% Feb 13, 2026
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Kosmos Energy Ltd. (KOS) ownership FAQ

Who owns KOS?

255 reporting institutions disclosed KOS position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.