Form 4 for LYB LyondellBasell

Accepted 2026-02-24 00:00:00 ET · period of report 2026-02-22 · accession 0001634184-26-000004 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
M	2026-02-24	2026-02-22+	LYB	Kaplan Jeffrey A	EVP, GC	F - Tax	$56.66	-2,125	87.8K	-2%	-$120.4K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Class A Ordinary Shares	2026-02-23	F	D	1,341	$56.66	86,471	D	—	—	(F3) On February 23, 2026 the reporting person's restricted stock units automatically vested 5,504 shares. 1,341 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F4) Includes 15,529 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 3,218 granted on February 22, 2024 that vest on February 22, 2027; 4,105 granted on February 27, 2025 that vest on February 27, 2026; 4,103 granted on February 27, 2025 that vest on February 27, 2027 and 4,103 granted on February 27, 2025 that vest on February 27, 2028.
2	Common	Class A Ordinary Shares	2026-02-22	F	D	784	$56.67	87,812	D	—	—	(F1) On February 22, 2026 the reporting person's restricted stock units automatically vested 3,218 shares. 784 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F2) Includes 21,033 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 5,504 granted on February 23, 2023 that vest on February 23, 2026; 3,218 granted on February 22, 2024 that vest on February 22, 2027; 4,105 granted on February 27, 2025 that vest on February 27, 2026; 4,103 granted on February 27, 2025 that vest on February 27, 2027 and 4,103 granted on February 27, 2025 that vest on February 27, 2028.