What SEC filings does LyondellBasell Industries N.V. submit to the SEC?

LyondellBasell Industries N.V. (LYB) 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 LYB?

A Form 4 for LYB 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 LyondellBasell Industries N.V.?

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 LYB?

The 10-K is LyondellBasell Industries N.V.'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 LYB SEC filings directly on EDGAR?

You can view all historical LyondellBasell Industries N.V. filings on the SEC EDGAR company page for LYB. Each filing card on this page links directly to the original SEC document.

How often does LyondellBasell Industries N.V. file with the SEC?

LyondellBasell Industries N.V. 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 LYB shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

LYB SEC Filing News — LyondellBasell Industries N.V.

Latest SEC filings for LyondellBasell Industries N.V. (LYB) 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: 2026-10-16.

LyondellBasell Industries N.V. operates as a chemical company in the United States, Germany, China, Mexico, Italy, Japan, France, Poland, the Netherlands, and internationally. It operates in five segments: Olefins and PolyolefinsAmericas; Olefins and PolyolefinsEurope, Asia, International; Intermediates and Derivatives; Advanced Polymer Solutions; and Technology. The company produces and markets olefins and co-products, such as ethylene, aromatics, propylene and butadiene; polyolefins; polyeth…

Sector: Basic Materials Industry: Specialty Chemicals Market Cap: $20.6B

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

What you're looking at: Each item below is parsed from an actual SEC filing submitted by LyondellBasell Industries N.V.. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.

LYB Filing Activity Snapshot 2026-05-26 — 2026-10-16

Insider Transactions (Form 4)

0 buys vs 0 sells

Insider buying and selling activity is balanced in this period.

Insider Transactions 17 · 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 17 filings in this group are Form 4s for LyondellBasell Industries N.V.

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 17 insider filings shown, the breakdown is 14 compensation award and 1 tax withholding. The remaining 2 filings report no transaction line — a holdings statement, or a form whose transaction table could not be read — so they are left unclassified rather than guessed at. None of the classified filings involved a discretionary open-market trade, so this period says nothing about what insiders think of the price.

What each transaction type means

Compensation award ×14: 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.
Tax withholding ×1: Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Form 4 Tax withholding Tax / Compensation Filing 2026-10-16

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

Hayes Matthew D (SVP & CAO) 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 withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	152	$62.67	$9.5K

Filing: Form 4 (Insider Transaction) Insider: Hayes Matthew D (SVP & CAO) Shares: 152

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-10-02

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

Karlin Bridget E (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	781	—	—
`F`	Tax withholding on vested shares	194	$57.47	$11.1K

Filing: Form 4 (Insider Transaction) Insider: Karlin Bridget E (Director) Shares: 975

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-10-02

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

KAMSKY VIRGINIA A (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	720	—	—
`F`	Tax withholding on vested shares	139	$57.47	$8.0K

Filing: Form 4 (Insider Transaction) Insider: KAMSKY VIRGINIA A (Director) Shares: 859

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-02

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

KAMSKY VIRGINIA A (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	561	—	—
`F`	Tax withholding on vested shares	100	$52.65	$5.3K

Filing: Form 4 (Insider Transaction) Insider: KAMSKY VIRGINIA A (Director) Shares: 661

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-02

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

Karlin Bridget E (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	615	—	—
`F`	Tax withholding on vested shares	73	$52.65	$3.8K

Filing: Form 4 (Insider Transaction) Insider: Karlin Bridget E (Director) Shares: 688

View on SEC EDGAR → Open Filing Document →

Form 4 Tax / Compensation Filing 2026-06-01

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

Seward James Malcolm (EVP & Chief Innovation Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Seward James Malcolm (EVP & Chief Innovation Officer)

View on SEC EDGAR → Open Filing Document →

Form 4 Tax / Compensation Filing 2026-06-01

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

Campbell Tracey D (EVP, Sustainability & Corp Aff) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Campbell Tracey D (EVP, Sustainability & Corp Aff)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

Manifold Albert Jude (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	2,321	—	—
`F`	Tax withholding on vested shares	689	$69.72	$48.0K

Filing: Form 4 (Insider Transaction) Insider: Manifold Albert Jude (Director) Shares: 3,010

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

Griffin Rita E (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	2,321	—	—
`F`	Tax withholding on vested shares	639	$69.72	$44.6K

Filing: Form 4 (Insider Transaction) Insider: Griffin Rita E (Director) Shares: 2,960

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

Karlin Bridget E (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	2,321	—	—
`F`	Tax withholding on vested shares	521	$69.72	$36.3K

Filing: Form 4 (Insider Transaction) Insider: Karlin Bridget E (Director) Shares: 2,842

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

KAMSKY VIRGINIA A (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	2,321	—	—
`F`	Tax withholding on vested shares	593	$69.72	$41.3K

Filing: Form 4 (Insider Transaction) Insider: KAMSKY VIRGINIA A (Director) Shares: 2,914

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

Hanley Michael Sean (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	2,321	—	—
`F`	Tax withholding on vested shares	540	$69.72	$37.6K

Filing: Form 4 (Insider Transaction) Insider: Hanley Michael Sean (Director) Shares: 2,861

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

Dudley Robert W. (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	2,321	—	—
`F`	Tax withholding on vested shares	708	$69.72	$49.4K

Filing: Form 4 (Insider Transaction) Insider: Dudley Robert W. (Director) Shares: 3,029

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

FARLEY CLAIRE S (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	2,321	—	—
`F`	Tax withholding on vested shares	565	$69.72	$39.4K

Filing: Form 4 (Insider Transaction) Insider: FARLEY CLAIRE S (Director) Shares: 2,886

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

CHASE ANTHONY R (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	2,321	—	—
`F`	Tax withholding on vested shares	540	$69.72	$37.6K

Filing: Form 4 (Insider Transaction) Insider: CHASE ANTHONY R (Director) Shares: 2,861

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

Buchanan Robin W.T. (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	2,321	—	—
`F`	Tax withholding on vested shares	1,247	$69.72	$86.9K

Filing: Form 4 (Insider Transaction) Insider: Buchanan Robin W.T. (Director) Shares: 3,568

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-26

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

Benet Lincoln E (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	2,321	—	—
`F`	Tax withholding on vested shares	1,410	$69.72	$98.3K

Filing: Form 4 (Insider Transaction) Insider: Benet Lincoln E (Director) Shares: 3,731

View on SEC EDGAR → Open Filing Document →

Material Events 2 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 2 in this period for LyondellBasell Industries N.V. 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 2026-07-31

LYB filed 8-K — material company event

LyondellBasell Industries N.V. 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 2026-05-29

LYB filed 8-K — material company event

LyondellBasell Industries N.V. 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 LyondellBasell Industries N.V.

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 2026-07-31

LYB filed Quarterly Report (10-Q)

LyondellBasell Industries N.V. 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 LyondellBasell Industries N.V.'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 LYB. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — LYB SEC Filings

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LYB Full Analysis

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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