James Malcolm Seward - 27 Feb 2026 Form 4 Insider Report for LyondellBasell Industries N.V. (LYB)

Reporting relationship: EVP & Chief Innovation Officer
Issuer ticker: LYB
Reported as of: 27 Feb 2026
Net transaction value: -$59,821
SEC form: 4
Accepted by SEC: 03 Mar 2026, 16:40:37 UTC
Prior SEC filing: 24 Feb 2026
Next SEC filing: 01 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Lara A. Mason, Attorney-in-Fact

Key filing fact

James Malcolm Seward filed Form 4 for LyondellBasell Industries N.V. (LYB) on 03 Mar 2026.

Key facts

This page summarizes James Malcolm Seward's Form 4 filing for LyondellBasell Industries N.V. (LYB).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Mar 2026, 16:40.

Change

Previous filing in this sequence was filed on 24 Feb 2026.
Current net transaction value: -$59,821.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001783902 Primary reporting owner

Seward James Malcolm

Relationship: EVP & Chief Innovation Officer
Address: 4TH FLOOR, ONE VINE STREET, LONDON, UNITED KINGDOM
Signature: /s/ Lara A. Mason, Attorney-in-Fact
Signature date: 03 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

LYB transaction

Class A Ordinary Shares

Tax liability

Transaction value: $59,821
Shares: -1,040
Change %: -3%
Price: $57.52
Shares after: 33,522
Date: 27 Feb 2026
Ownership: Direct
Footnotes: F1, F2

LYB transaction

Class A Ordinary Shares

Award

Transaction value: $0
Shares: +12,209
Change %: +36%
Price: $0.000000
Shares after: 45,731
Date: 28 Feb 2026
Ownership: Direct
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

On February 27, 2026 the reporting person's restricted stock units automatically vested 2,100 shares. 1,040 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations.

Footnote F2

Includes 5,894 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,696 granted on February 22, 2024 that vest on February 22, 2027; 2,099 granted on February 27, 2025 that vest on February 27, 2027 and 2,099 granted on February 27, 2025 that vest on February 27, 2028.

Footnote F3

Includes 18,103 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,696 granted on February 22, 2024 that vest on February 22, 2027; 2,099 granted on February 27, 2025 that vest on February 27, 2027 and 2,099 granted on February 27, 2025 that vest on February 27, 2028. The 12,209 RSUs reported on this Form 4 vest as follows: 4,071 vest on February 28, 2027, 4,069 vest on February 28, 2028 and 4,069 vest on February 28, 2029.