Kosmos Energy Ltd. (KOS) ownership: Top institutional holder: BlackRock, Inc. ($131.95M). Insider activity: Net Seller (2 buys, 18 sells). 2 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 47463094.00 | $131.95M | 2026-03-31 |
| STATE STREET CORP | 28247797.00 | $78.53M | 2026-03-31 |
| Equinox Partners Investment Management LLC | 20678033.00 | $57.48M | 2026-03-31 |
| D. E. Shaw & Co., Inc. | 20385745.00 | $56.67M | 2026-03-31 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 20051601.00 | $55.74M | 2026-03-31 |
| TWO SIGMA INVESTMENTS, LP | 18680328.00 | $51.93M | 2026-03-31 |
| Grantham, Mayo, Van Otterloo & Co. LLC | 18307718.00 | $50.90M | 2026-03-31 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 14135448.00 | $39.30M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-28 | |
| Sell | null | 2026-05-28 | |
| Sell | null | 2026-05-28 | |
| Sell | null | 2026-05-28 | |
| Sell | null | 2026-05-28 | |
| Sell | null | 2026-05-28 | |
| Sell | null | 2026-05-28 | |
| Sell | null | 2026-05-28 |
Back to KOS overview · KOS earnings · All congressional trades
Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.