Form 4 for LYB LyondellBasell

Accepted 2026-02-24 00:00:00 ET · period of report 2026-02-22 · accession 0002012815-26-000004 · 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	Ledet Aaron J	EVP, I, D, Supply Chain	F - Tax	$56.66	-687	15.1K	-4%	-$38.9K

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	333	$56.67	15,429.53	D	—	—	(F1) On February 22, 2026 the reporting person's restricted stock units automatically vested 1,232 shares. 333 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F2) Includes 10,176 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,453 granted on February 23, 2023 that vest on February 23, 2026; 1,232 granted on February 22, 2024 that vest on February 22, 2027; 2,497 granted on February 27, 2025 that vest on February 27, 2026; 2,497 granted on February 27, 2025 that vest on February 26, 2027 and 2,497 granted on February 27, 2025 that vest on February 26, 2028.
2	Common	Class A Ordinary Shares	2026-02-23	F	D	354	$56.66	15,075.53	D	—	—	(F3) On February 23, 2026 the reporting person's restricted stock units automatically vested 1,453 shares. 354 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F4) Includes 8,723 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 1,232 granted on February 22, 2024 that vest on February 22, 2027; 2,497 granted on February 27, 2025 that vest on February 27, 2026; 2,497 granted on February 27, 2025 that vest on February 26, 2027 and 2,497 granted on February 27, 2025 that vest on February 26, 2028.