What SEC filings does Kosmos Energy Ltd. submit to the SEC?

Kosmos Energy Ltd. (KOS) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about KOS?

A Form 4 for KOS discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Kosmos Energy Ltd.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for KOS?

The 10-K is Kosmos Energy Ltd.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all KOS SEC filings directly on EDGAR?

You can view all historical Kosmos Energy Ltd. filings on the SEC EDGAR company page for KOS. Each filing card on this page links directly to the original SEC document.

How often does Kosmos Energy Ltd. file with the SEC?

Kosmos Energy Ltd. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling KOS shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

KOS SEC Filing News — Kosmos Energy Ltd.

Latest SEC filings for Kosmos Energy Ltd. (KOS) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-09-21.

Kosmos Energy Ltd., a deepwater exploration and production company, engages in the exploration, development, and production of oil and natural gas properties. It has oil and gas production projects in offshore Ghana, Equatorial Guinea, Mauritania, Senegal, and the Gulf of America. The company was founded in 2003 and is headquartered in Dallas, Texas.

Sector: Energy Industry: Oil & Gas E&P Market Cap: $1.7B

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for KOS currently lean bearish. Of the 20 filing records displayed, 7 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.

KOS Filing Activity Snapshot 2026-05-29 — 2026-09-21

Insider Transactions (Form 4)

0 buys vs 7 sells

Net insider selling in this period — insiders sell for many reasons beyond conviction.

Largest Form 144 Filing

$176.7K

INGLIS ANDREW G · 2026-07-02

85,935 shares · Form 144

Form 144 Notices

Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 11 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 11 filings in this group are Form 4s for Kosmos Energy Ltd.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 11 insider filings shown, the breakdown is 7 open-market sale and 4 compensation award. 7 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×7: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Compensation award ×4: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Form 4 Open-market sale Insider Selling 2026-07-06

KOS insider INGLIS ANDREW G (Director, Chairman and CEO) sold 85,935 shares (~$176.2K)

INGLIS ANDREW G, listed as Director, Chairman and CEO at Kosmos Energy Ltd., reported an open-market sale of 85,935 KOS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	221,171	—	—
`S`	Open-market sale	85,935	$2.05	$176.2K

Filing: Form 4 (Insider Transaction) Insider: INGLIS ANDREW G (Director, Chairman and CEO) Shares: 85,935 Est. Value: $176.2K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-06

KOS insider Shah Nealesh D. (SVP and CFO) sold 45,980 shares (~$94.3K)

Shah Nealesh D., listed as SVP and CFO at Kosmos Energy Ltd., reported an open-market sale of 45,980 KOS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	118,329	—	—
`S`	Open-market sale	45,980	$2.05	$94.3K

Filing: Form 4 (Insider Transaction) Insider: Shah Nealesh D. (SVP and CFO) Shares: 45,980 Est. Value: $94.3K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-06

KOS insider Marion Josh R. (SVP and General Counsel) sold 24,969 shares (~$51.2K)

Marion Josh R., listed as SVP and General Counsel at Kosmos Energy Ltd., reported an open-market sale of 24,969 KOS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	64,248	—	—
`S`	Open-market sale	24,969	$2.05	$51.2K

Filing: Form 4 (Insider Transaction) Insider: Marion Josh R. (SVP and General Counsel) Shares: 24,969 Est. Value: $51.2K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-06

KOS insider Glass Ronald W. (VP & Chief Accounting Officer) sold 12,128 shares (~$24.9K)

Glass Ronald W., listed as VP & Chief Accounting Officer at Kosmos Energy Ltd., reported an open-market sale of 12,128 KOS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	31,196	—	—
`S`	Open-market sale	12,128	$2.05	$24.9K

Filing: Form 4 (Insider Transaction) Insider: Glass Ronald W. (VP & Chief Accounting Officer) Shares: 12,128 Est. Value: $24.9K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-05-29

KOS insider Grant John Douglas Kelso (Director) sold 43,466 shares (~$118.7K)

Grant John Douglas Kelso, listed as Director at Kosmos Energy Ltd., reported an open-market sale of 43,466 KOS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	735	$2.85	$2.1K
`S`	Open-market sale	43,466	$2.73	$118.7K
`A`	Compensation award	62,044	$2.74	$170.0K

Filing: Form 4 (Insider Transaction) Insider: Grant John Douglas Kelso (Director) Shares: 43,466 Est. Value: $118.7K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-05-29

KOS insider Sterin Steven (Director) sold 38,636 shares (~$105.5K)

Sterin Steven, listed as Director at Kosmos Energy Ltd., reported an open-market sale of 38,636 KOS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	38,636	$2.73	$105.5K
`A`	Compensation award	62,044	$2.74	$170.0K

Filing: Form 4 (Insider Transaction) Insider: Sterin Steven (Director) Shares: 38,636 Est. Value: $105.5K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-05-29

KOS insider Franklin Roy A. (Director) sold 43,466 shares (~$118.7K)

Franklin Roy A., listed as Director at Kosmos Energy Ltd., reported an open-market sale of 43,466 KOS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	976	$2.85	$2.8K
`S`	Open-market sale	43,466	$2.73	$118.7K
`A`	Compensation award	62,044	$2.74	$170.0K

Filing: Form 4 (Insider Transaction) Insider: Franklin Roy A. (Director) Shares: 43,466 Est. Value: $118.7K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-29

KOS insider Form 4 filed for equity award, exercise, or tax withholding

STICE J MICHAEL (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	62,044	$2.74	$170.0K

Filing: Form 4 (Insider Transaction) Insider: STICE J MICHAEL (Director) Shares: 62,044

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-29

KOS insider Form 4 filed for equity award, exercise, or tax withholding

GOODWIN DEANNA L (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	62,044	$2.74	$170.0K

Filing: Form 4 (Insider Transaction) Insider: GOODWIN DEANNA L (Director) Shares: 62,044

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-29

KOS insider Form 4 filed for equity award, exercise, or tax withholding

Moraeus Hanssen Maria (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	62,044	$2.74	$170.0K

Filing: Form 4 (Insider Transaction) Insider: Moraeus Hanssen Maria (Director) Shares: 62,044

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-29

KOS insider Form 4 filed for equity award, exercise, or tax withholding

Ogunlesi Adebayo O. (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	62,044	$2.74	$170.0K

Filing: Form 4 (Insider Transaction) Insider: Ogunlesi Adebayo O. (Director) Shares: 62,044

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 4 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Kosmos Energy Ltd. has 4 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-07-02

KOS Form 144 filed for proposed insider sale by INGLIS ANDREW G (85,935 shares) ~$176.7K

INGLIS ANDREW G filed a Form 144 with the SEC indicating intent to sell KOS (Kosmos Energy Ltd.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: INGLIS ANDREW G Shares: 85,935 Est. Value: $176.7K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-07-02

KOS Form 144 filed for proposed insider sale by Shah Nealesh D. (45,980 shares) ~$94.5K

Shah Nealesh D. filed a Form 144 with the SEC indicating intent to sell KOS (Kosmos Energy Ltd.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Shah Nealesh D. Shares: 45,980 Est. Value: $94.5K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-07-02

KOS Form 144 filed for proposed insider sale by Marion Josh R. (24,969 shares) ~$51.3K

Marion Josh R. filed a Form 144 with the SEC indicating intent to sell KOS (Kosmos Energy Ltd.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Marion Josh R. Shares: 24,969 Est. Value: $51.3K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-07-02

KOS Form 144 filed for proposed insider sale by Glass Ronald W. (12,128 shares) ~$24.9K

Glass Ronald W. filed a Form 144 with the SEC indicating intent to sell KOS (Kosmos Energy Ltd.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Glass Ronald W. Shares: 12,128 Est. Value: $24.9K

View on SEC EDGAR → Open Filing Document →

Material Events 4 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 4 in this period for Kosmos Energy Ltd. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-09-21

KOS filed 8-K — material company event

Kosmos Energy Ltd. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-09-08

KOS filed 8-K — material company event

Kosmos Energy Ltd. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-08-03

KOS filed 8-K — material company event

Kosmos Energy Ltd. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-06-22

KOS filed 8-K — material company event

Kosmos Energy Ltd. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for Kosmos Energy Ltd.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-03

KOS filed Quarterly Report (10-Q)

Kosmos Energy Ltd. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

How we classify Kosmos Energy Ltd.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on KOS. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — KOS SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

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