KOS SEC Form 4 filings
Kosmos Energy Ltd. Latest Insider Trading Activity
Our insider trading activity tracker for Kosmos Energy Ltd. shows 13 total open-market insider transactions for KOS over the past 624 days. The most recent displayed transaction was on May 28, 2026, when Franklin Roy A. (Kosmos Energy Ltd. Director) reported a sale of 43,466 shares at $2.73 per share. This page shows up to the 10 most recent SEC Form 4 filing records on a 6-hour delay. Sign up for real-time updates and access to 20 years of historic insider trading data.
Insider Trading For KOS Charted on Daily Candles. Scroll left or zoom out to load earlier candles (up to 2 years).
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting KOS | 2026-05-29 | 2026-05-28 | Kosmos Energy Ltd. | Franklin Roy A. | Director | Sell | 1 | 43,466 | $2.73 | $118,662.18 | 22.38% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting KOS | 2026-05-29 | 2026-05-27 | Kosmos Energy Ltd. | Grant John Douglas Kelso | Director | Sell | 1 | 43,466 | $2.73 | $118,662.18 | 34.56% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting KOS | 2026-05-29 | 2026-05-27 | Kosmos Energy Ltd. | Sterin Steven | Director | Sell | 1 | 38,636 | $2.73 | $105,476.28 | 10.44% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. KOS | 2026-03-12 | 2026-03-10 | Kosmos Energy Ltd. | Stice J Michael | Director | Buy | 1 | 52,631 | $1.90 | $99,998.90 | 25.35% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. KOS | 2026-03-12 | 2026-03-10 | Kosmos Energy Ltd. | Inglis Andrew G | Chairman and CEO | Buy | 1 | 315,790 | $1.90 | $600,001.00 | 6.95% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction KOS | 2026-02-05 | 2026-02-04 | Kosmos Energy Ltd. | Marion Josh R. | SVP and General Counsel | Sell | 2 | 22,940 | $1.38 | $31,592.00 | 5.53% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction KOS | 2026-02-05 | 2026-02-04 | Kosmos Energy Ltd. | Glass Ronald W. | VP & Chief Accounting Officer | Sell | 2 | 22,598 | $1.38 | $31,124.91 | 3.20% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction KOS | 2025-06-06 | 2025-06-05 | Kosmos Energy Ltd. | Grant John Douglas Kelso | Director | Sell | 1 | 27,923 | $1.81 | $50,540.63 | 48.27% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction KOS | 2025-02-06 | 2025-02-05 | Kosmos Energy Ltd. | Ball Christopher James | SVP, Chief Commercial Officer | Sell | 2 | 223,482 | $3.11 | $695,878.00 | 6.23% | View Filing |
| 10b5-1: Scheduled Form 4 Transaction KOS | 2025-02-04 | 2025-02-03 | Kosmos Energy Ltd. | Glass Ronald W. | VP & Chief Accounting Officer | Sell | 1 | 16,182 | $3.12 | $50,487.84 | 4.81% | View Filing |
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