Energy · Crude Petroleum & Natural Gas

KOS Kosmos Energy Ltd. SEC Filings & Insider Trading Activity 2026

company
CIK 1509991112 filings
Russell 2000

KOS at a glance

Kosmos Energy Ltd. (KOS, SEC CIK 1509991) filed its latest 10-K annual report on March 2, 2026, a 10-Q quarterly report on August 3, 2026, an 8-K current report on September 21, 2026 and Form 4 insider filings as recently as July 6, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.

  • For the fiscal year ended December 31, 2025 (FY2025), Kosmos Energy Ltd. (KOS) reported revenue of $1.3 billion (down 23.1% from FY2024) and a net loss of $699.8 million. Diluted EPS was -$1.47.
  • As of June 30, 2026, 31 institutional investment managers tracked by SignalX reported holding Kosmos Energy Ltd. (KOS) shares worth $484.2 million in 13F-HR filings.
  • The most recent insider open-market sale reported on Form 4 was by Marion Josh R. on July 2, 2026 of 24,969 shares at $2.05 per share.

Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).

Revenue · FY2025
$1.3B
−23.1% vs prior year
Insiders · 90 days
0 buys · 0 sells
No open-market trades
13F holders
31 funds
$484.2M · +1 vs prior quarter
Latest 8-K
Sep 21, 2026
Item 7.01

AI 10-K Annual Report Analysis

Latest 10-K, fiscal year ended Dec 31, 2025

Full analysis →

Business Overview

  • Core business model: Exploration, development, and production of oil, natural gas, and LNG
  • No new products or business segments introduced or emphasized in 2026 filing
  • Increased regulatory compliance focus due to global anti-corruption laws and rising derivatives market regulations affecting hedging costs
  • Operational risks highlighted include employee retention and exposure to global activism potentially increasing costs and taxation
  • Noteworthy emphasis on risks from U.S. Foreign Corrupt Practices Act and evolving Commodity Futures Trading Commission rules impacting derivatives use and cost structure

Risk Factors

  • Regulatory risk from Ghana license extension: Government share to increase by 10% starting July 2036, reducing partners’ shares pro rata
  • Geopolitical risk in Equatorial Guinea: Ceiba and Okume asset sale for $180M upfront pending CEMAC approval delays
  • Operational risk at Gulf of America Winterfell: Winterfell-4 well abandoned due to casing collapse, production remains curtailed since late 2024
  • Competitive risk from alliance with Shell in Gulf of America: Alignment on 10 blocks with Shell, drilling Trailblazer planned for 2027
  • Financial risk from leverage: $250M term loan secured by Gulf of America assets with principal payments starting June 30, 2026

Management Discussion & Analysis

  • Revenue $1.29B in 2025, down $387M YoY from $1.68B in 2024, due to lower prices, offset by LNG ramp-up in Mauritania/Senegal
  • Net loss of $700M in 2025 vs. net income $190M in 2024; oil and gas production costs increased to $709M in 2025 from $531M; depletion & amortization $557M vs. $457M
  • Best segment: Mauritania/Senegal with LNG ramp-up increasing sales volumes; worst: Jubilee and Equatorial Guinea with lower volumes and negative reserve impairments of $177.6M
  • Operating cash flow $134M in 2025, down from $678M; capex $314M in 2025 vs. $934M in 2024; debt increased to $3.1B with new $350M Nordic bonds in 2026 and $100M early Facility repayment
  • 2026 capital budget $350M focused on Ghana, GoA, Mauritania/Senegal development; amended debt covenants easing leverage ratios through Sept 2026; commodity price volatility and LNG ramp risks noted

AI summary of the KOS 10-K filed . Generated from the filing text; verify against the original.View on SEC EDGARHow to read a 10-K

AI 10-Q Quarterly Report Analysis

Latest 10-Q, quarter ended Jun 30, 2026

Management Discussion & Analysis

  • Revenue $607.3M, up $214.6M YoY from $392.6M
  • Net income $184.8M vs $87.7M loss YoY
  • Best performer Ghana: 105,700 Boepd gross; GTA 64,300 Boepd gross
  • Operating cash flow $281.6M vs $126.3M YoY
  • 2026 capital budget around $350M; oil-price volatility and macroeconomic uncertainty remain headwinds

Risk Factors

  • No risk-factors section provided in submitted filing text
  • Insider trading-plan risk: Sir John Grant terminated an unused Rule 10b5-1 plan covering 43,466 shares
  • Compliance disclosure: Rule 10b5-1 arrangement termination reported for the three months ended June 30, 2026
  • No liquidity, debt maturity, currency, operational, competitive, or regulatory risks disclosed in provided text

AI summary of the KOS 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K

AI 8-K Current Report Analysis

The most recent material events, by 8-K item

Filed Sep 21, 2026Full analysis →

Item 7.01: Regulation FD Disclosure

  • $25 million partial redemption of 7.750% senior notes due 2027 scheduled for September 30, 2026
  • Debt reduction lowers future interest expense on the redeemed notes
Filed Sep 8, 2026Full analysis →

Item 7.01: Regulation FD Disclosure

  • Planned redemption of $25 million principal of 7.750% senior notes due 2027
  • Expected redemption date: September 18, 2026
Filed Aug 3, 2026Full analysis →

Item 7.01: Regulation FD Disclosure

  • Q2 2026 results released August 3, 2026, covering the quarter ended June 30, 2026
  • Exhibit 99.1 contains the substantive financial and operating results for investor review

Item 2.02: Results of Operations and Financial Condition

  • Kosmos announced results for quarter ended June 30, 2026
  • Exhibit 99.1 contains the substantive financial results and management commentary

Item EX-99.1: Item EX-99.1

  • Q2 revenue $607M and net income $185M, reversing a $88M loss; adjusted net income $68M, or $0.11 per diluted share
  • Production 71,400 boepd, up 12% YoY, while production costs fell 25% to $25.61 per boe

AI summaries of KOS 8-K current reports filed with the SEC. What 8-K item codes mean

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Recent Insider Transactions (Form 4)

Latest reported trades by officers, directors and 10% owners

InsiderTypeDatePrice
Marion Josh R.SellJul 2, 2026$2.05
INGLIS ANDREW GSellJul 2, 2026$2.05
INGLIS ANDREW GSellJul 2, 2026$2.05
Glass Ronald W.SellJul 2, 2026$2.05
Shah Nealesh D.SellJul 2, 2026$2.05
Shah Nealesh D.AJul 1, 2026-
INGLIS ANDREW GAJul 1, 2026-
Glass Ronald W.AJul 1, 2026-

Financial Summary
XBRL

Annual financial summary from SEC XBRL data
MetricFY2023FY2024FY2025
Profitability
Revenue$1.7B$1.7B$1.3B
Net Income$213.5M$189.9M-$699.8M
Net Margin12.5%11.3%-54.3%
Balance Sheet
Total Assets$4.9B$5.3B$4.7B
Equity$1.0B$1.2B$528.6M
ROE20.7%15.8%-132.4%
Per Share
EPS$0.44$0.40$-1.47
Cash Flow
Operating CF$765.2M$678.2M$134.0M

Source: XBRL data in Kosmos Energy Ltd. (KOS)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →

13F Fund Holdings: Quarterly Trend

Latest: Q2 2026

Aggregate KOS share value held by 13F filers tracked by SignalX, by quarter.

Quarterly totals table
KOS shares held by 13F filers tracked by SignalX, by quarter
QuarterFundsTotal value
Q2 202631$484.2M
Q1 202630$568.2M
Q4 202528$136.6M
Q3 202529$308.4M
Q2 202527$303.3M
Q1 202526$256.1M
Q4 202419$266.2M
Q3 202417$221.4M
Position changes: Q1 2026 → Q2 2026
Top Buyers
Top Sellers
New Positions
Closed Positions
None this quarter.

Source: 13F-HR filings on SEC EDGAR (aggregated from 207 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work

KOS filing archive

AI analysis pages for each 10-K, 10-Q and 8-K

Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4

FormFiling dateAnalysisSEC
8-KSep 21, 2026Analysis-
8-KSep 8, 2026Analysis-
8-KAug 3, 2026Analysis-
10-QAug 3, 2026Analysis
4Jul 6, 2026--
4Jul 6, 2026--
4Jul 6, 2026--
4Jul 6, 2026--
8-KJun 22, 2026Analysis-
4May 29, 2026-
4May 29, 2026-
4May 29, 2026-
4May 29, 2026-
4May 29, 2026-
4May 29, 2026-
4May 29, 2026-
8-KMay 28, 2026Analysis
8-KMay 5, 2026Analysis-
10-QMay 5, 2026Analysis
4Mar 12, 2026--
8-KMar 12, 2026Analysis-
4Mar 12, 2026--
4Mar 12, 2026--
4Mar 12, 2026--
10-KMar 2, 2026Analysis

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KOS SEC filings: frequently asked questions

Which institutions hold KOS stock?

As of June 30, 2026, the largest Kosmos Energy Ltd. (KOS) holders among the 13F filers tracked by SignalX were BlackRock ($118.2 million), State Street Corp ($62.1 million), Two Sigma Investments ($53.6 million), D.E. Shaw & Co ($51.8 million), Vanguard Portfolio Management LLC ($25.3 million). 13F-HR reports are filed up to 45 days after each quarter ends.

What was KOS's revenue in fiscal year 2025?

For the fiscal year ended December 31, 2025 (FY2025), Kosmos Energy Ltd. (KOS) reported revenue of $1.3 billion (down 23.1% from FY2024) and a net loss of $699.8 million. Diluted EPS was -$1.47. The figures come from the XBRL data in the 10-K.

What are the main risks in KOS's latest 10-K?

In the 10-K filed March 2, 2026, Kosmos Energy Ltd. (KOS) flagged: Regulatory risk from Ghana license extension: Government share to increase by 10% starting July 2036, reducing partners’ shares pro rata. Geopolitical risk in Equatorial Guinea: Ceiba and Okume asset sale for $180M upfront pending CEMAC approval delays. (AI summary of the Risk Factors section.)

What did KOS report in its latest 8-K?

Kosmos Energy Ltd. (KOS) filed an 8-K on September 21, 2026 reporting Item 7.01 (Regulation FD Disclosure). $25 million partial redemption of 7.750% senior notes due 2027 scheduled for September 30, 2026.

What are the latest KOS SEC filings?

Kosmos Energy Ltd. (KOS) filed its latest 10-K annual report on March 2, 2026, a 10-Q quarterly report on August 3, 2026, an 8-K current report on September 21, 2026 and a Form 4 insider filing on July 6, 2026.

What is KOS's SEC CIK number?

Kosmos Energy Ltd. (KOS)'s SEC Central Index Key (CIK) is 1509991. EDGAR lists every KOS filing under that number.

Ask anything about KOS

The research agent reads KOS's filings, financials, insider trades and 13F holders, then answers with sources.