Form 4 for LYB LyondellBasell

Accepted 2026-02-24 00:00:00 ET · period of report 2026-02-22 · accession 0001964403-26-000004 · 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	Conley Trisha L	EVP, People, Culture	F - Tax	$56.66	-1,528	19.4K	-7%	-$86.6K

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	2026-02-22	F	D	552	$56.67	20,385	D	—	—	(F1) On February 22, 2026 the reporting person's restricted stock units automatically vested 2,265 shares. 552 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F2) Includes 15,022 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 4,008 granted on February 23, 2023 that vest on February 23, 2026; 2,265 granted on February 22, 2024 that vest on February 22, 2027; 2,917 granted on February 27, 2025 that vest on February 27, 2026; 2,916 granted on February 27, 2025 that vest on February 27, 2027 and 2,916 granted on February 27, 2025 that vest on February 27, 2028.
2	Common	Class A Ordinary Shares	2026-02-23	F	D	976	$56.66	19,409	D	—	—	(F3) On February 23, 2026 the reporting person's restricted stock units automatically vested 4,008 shares. 976 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F4) Includes 11,014 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 2,265 granted on February 22, 2024 that vest on February 22, 2027; 2,917 granted on February 27, 2025 that vest on February 27, 2026; 2,916 granted on February 27, 2025 that vest on February 27, 2027 and 2,916 granted on February 27, 2025 that vest on February 27, 2028.