Form 4 for LYB LyondellBasell

Accepted 2026-03-03 00:00:00 ET · period of report 2026-02-27 · accession 0001911538-26-000006 · 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
	2026-03-03	2026-02-27	LYB	Vanacker Peter Z. E.	CEO, Dir	F - Tax	$57.52	-7,506	150.0K	-5%	-$431.7K
	2026-03-03	2026-02-28	LYB	Vanacker Peter Z. E.	CEO, Dir	A - Grant	$0.00	+98.5K	248.6K	+66%	$0

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	2026-02-27	F	D	7,506	$57.52	150,005	D	—	—	(F1) On February 27, 2026 the reporting person's restricted stock units automatically vested 19,074 shares. 7,506 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F2) Includes 53,550 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 15,406 granted on February 22, 2024 that vest on February 22, 2027; 19,072 granted on February 27, 2025 that vest on February 27, 2027 and 19,072 granted on February 27, 2025 vest on February 27, 2028.
2	Common	Class A Ordinary Shares	2026-02-28	A	A	98,549	$0.00	248,554	D	—	—	(F3) Includes 152,099 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 15,406 granted on February 22, 2024 that vest on February 22, 2027; 19,072 granted on February 27, 2025 that vest on February 27, 2027 and 19,072 granted on February 27, 2025 vest on February 27, 2028. The 98,549 RSUs reported on this Form 4 vest as follows: 32,851 vest on February 28, 2027, 32,849 vest on February 28, 2028 and 32,849 vest on February 28, 2029.