Form 4 for LYB LyondellBasell

Accepted 2026-02-24 00:00:00 ET · period of report 2026-02-22 · accession 0001791947-26-000004 · 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	Foley Kimberly A	EVP, Gbl O, P, Refining	F - Tax	$56.66	-2,176	69.7K	-3%	-$123.3K

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	1,356	$56.66	68,325.55	D	—	—	(F3) On February 23, 2026 the reporting person's restricted stock units automatically vested 5,566 shares. 1,356 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F4) Includes 16,749 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 10,095 granted on February 22, 2024 of which 3,365 vested on February 22, 2025, 3,365 vest on February 22, 2027 and 13,384 granted on February 27, 2025 of which 4,462 vest on February 27, 2026, 4,461 vest on February 27, 2027 and 4,461 vest on February 27, 2028.
2	Common	Class A Ordinary Shares	2026-02-22	F	D	820	$56.67	69,681.55	D	—	—	(F1) On February 22, 2026 the reporting person's restricted stock units automatically vested 3,365 shares. 820 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F2) Includes 22,315 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 5,566 granted on February 23, 2023 that vest on February 23, 2026; 10,095 granted on February 22, 2024 of which 3,365 vested on February 22, 2025, 3,365 vest on February 22, 2027 and 13,384 granted on February 27, 2025 of which 4,462 vest on February 27, 2026, 4,461 vest on February 27, 2027 and 4,461 vest on February 27, 2028.