Form 4 for LYB LyondellBasell

Accepted 2026-03-03 00:00:00 ET · period of report 2026-02-27 · accession 0001634184-26-000006 · 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	2026-02-28	LYB	Kaplan Jeffrey A	EVP, GC	A - Grant	$0.00	+21.2K	106.7K	+25%	$0
	2026-03-03	2026-02-27	LYB	Kaplan Jeffrey A	EVP, GC	F - Tax	$57.52	-1,000	85.5K	-1%	-$57.5K

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	2026-02-28	A	A	21,203	$0.00	106,674	D	—	—	(F3) Includes 32,627 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; 4,103 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. The 21,203 RSUs reported on this Form 4 vest as follows: 7,069 vest on February 28, 2027, 7,067 vest on February 28, 2028 and 7,067 vest on February 28, 2029.
2	Common	Class A Ordinary Shares	2026-02-27	F	D	1,000	$57.52	85,471	D	—	—	(F1) On February 27, 2026 the reporting person's restricted stock units automatically vested 4,105 shares. 1,000 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. (F2) Includes 11,424 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; 4,103 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.