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LYBLyondellBasell · Insider ownership research

LyondellBasell insiders sold $742K in the past 12 months. How much of their stake is that?

About 2.5% overall. As a group they ended with more shares than they started with. The biggest individual seller, Jeffrey Kaplan, sold shares equal to 16% of starting holdings, but more vested, so the stake grew.

Updated Oct 8, 2026 from SEC filings · covers Oct 9, 2025 to Oct 8, 2026
How this comparesMore of their stake sold than at 121 of the 311 other companies we can measure (#191 of 312)See ranking
1
buyer among officers and directors (1 trade), past 12 months
0%
of sales were under disclosed trading plans, past 12 months
1 of 23
officers and directors sold shares, past 12 months
Recent activity · past 30 days, Sep 9, 2026 to Oct 8, 2026
Sep 30, 20262 directors had 333 shares ($19K) withheld by the company for taxes (not a market sale). That is between 1.7% and 3.8% of each person's total stake held that day. 1.5K shares came in from vesting or option exercises the same day, so their combined holdings rose by 1.2K net.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Bridget Karlin
Director
194$57.473.8%4.9KSep 30, 2026Oct 2, 2026
Virginia Kamsky
Director
139$57.471.7%7.9KSep 30, 2026Oct 2, 2026

"% of total stake" is the shares in this event against all the vested shares the person held that day, across every share class and holding entity, after that day's vesting. "n/a" means the person's holdings don't reconcile, or the row is a purchase. "Holdings record incomplete" means more shares were sold than the filings show the person held that day, so a percentage would be wrong.

Is this normal? Less than usual: about a quarter of the 5-year average. 1 insider sold; the average is 4 a year. Year by year
Latest filing: Filed Oct 2 for a tax withholding on Sep 30. Bridget Karlin had 194 shares withheld by the company for taxes. Filing
69 SEC ownership filings in the period · See the evidence

What stands out

Kimberly Foley bought 5.7K shares for $247K, first on Nov 12, 2025.Purchase, Nov 12, 2025
Outside holder AI INVESTMENTS HOLDINGS LLC, a 10% owner and not part of management, sold $26.3M of stock.Largest sale, Mar 9, 2026
Jeffrey Kaplan sold 10K shares (16% of starting holdings), but 17K more vested, so the stake grew (from 62K to 64K).Largest sale, May 13, 2026

Percentages cover 19 of 23 officers and directors. 4 are left out

i
Left out: Tracey Campbell, Aaron Ledet, Laan van der and Matthew Hayes (holdings couldn't be fully reconciled).
Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Each bar is the insider's vested stake at the start of the period (Oct 8, 2025). The gold part is what they sold.

SoldRest of starting stakeAdded during the period
Jeffrey Kaplan
EVP, Chief PC, Leg & Corp Ofc
16% · $742KNo plan disclosed
Amounts, filings and trading plans for each seller

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planTo cover taxesNo plan disclosed
OctNovDecJanFebMarAprMay 2026: $742K no plan disclosed$742KMayJunJulAugSepOct

Outside holders, reported separately

AI INVESTMENTS HOLDINGS LLC sold $26.3M in the past 12 months. Large shareholders and the funds or companies that board members represent are not part of management, so they are left out of the figures above.

Details

Common questions

Is the LyondellBasell CEO selling stock?

No. Peter Vanacker reported no open-market sales in the past 12 months.

Why are LyondellBasell insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 0% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 100% had no disclosed plan. A trading plan schedules sales in advance.

Are any LyondellBasell insiders buying?

Yes. 1 officer or director reported 1 purchase in the past 12 months (Form 4 code P, which includes private purchases).

How much of their stake did LyondellBasell insiders sell?

About 2.5% overall. As a group they ended with more shares than they started with. The biggest individual seller, Jeffrey Kaplan, sold shares equal to 16% of starting holdings, but more vested, so the stake grew. That covers the 12 months to Oct 8, 2026 and counts vested shares reported on SEC Forms 3, 4 and 5, which is not an insider's whole wealth.

The evidence

Who sold1 officer or director: amount, % of holdings, trading plan
Who soldAmount% of holdingsTrading plan
Jeffrey Kaplan
EVP, Chief PC, Leg & Corp Ofc
$742K
10K shares
16%No plan disclosed

Outside holder, reported separately: AI INVESTMENTS HOLDINGS LLC (a 10% owner, not part of management). Sold $26.3M (385K shares) from Mar 9, 2026 to Mar 9, 2026. Latest filing

The full ownership picture19 of 23 insiders fully reconciled · 23 officers and directors

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

InsiderHeld Oct 8, 2025SoldHeld Oct 8, 2026Still held
Torkel Rhenman
i
Unvested RSUs stated in footnotes are excluded from owned shares.
EVP, Adv Polymer Solutions
68K082Kno sales
Vesting, gifts, unvested awards and holding lines for Torkel Rhenman
0shares vested or exercised
0gifted (net of own trusts)
−4.7Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares68,25382,083
Jeffrey Kaplan
i
Unvested RSUs stated in footnotes are excluded from owned shares.
EVP, Chief PC, Leg & Corp Ofc
62K−10K64K+4%
Vesting, gifts, unvested awards and holding lines for Jeffrey Kaplan
0shares vested or exercised
0gifted (net of own trusts)
−4.1Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares61,56864,047
Peter Vanacker
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Chief Executive Officer, Director
44K096Kno sales
Vesting, gifts, unvested awards and holding lines for Peter Vanacker
0shares vested or exercised
0gifted (net of own trusts)
−30Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares44,11096,455
Kimberly Foley
i
Unvested RSUs stated in footnotes are excluded from owned shares.
EVP, Global O&P and Refining
36K055Kno sales
Vesting, gifts, unvested awards and holding lines for Kimberly Foley
0shares vested or exercised
0gifted (net of own trusts)
−4.6Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares35,81354,952
Dale Friedrichs
i
Unvested RSUs stated in footnotes are excluded from owned shares.
EVP, Ops Excellence, HSE
29K039Kno sales
Vesting, gifts, unvested awards and holding lines for Dale Friedrichs
0shares vested or exercised
0gifted (net of own trusts)
−3.1Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares28,97538,789
Jacques Aigrain
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
28K033Kno sales
Vesting, gifts, unvested awards and holding lines for Jacques Aigrain
0shares vested or exercised
0gifted (net of own trusts)
−575withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares28,09533,097
James Seward
i
Unvested RSUs stated in footnotes are excluded from owned shares.
EVP & Chief Innovation Officer
23K028Kno sales
Vesting, gifts, unvested awards and holding lines for James Seward
0shares vested or exercised
0gifted (net of own trusts)
−4.2Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares23,39027,628

Stock options (not counted as shares):

Options heldStrike priceExpiresIntrinsic value (estimate)
2,330$89.26Feb 24, 2032$0
424$77.80Oct 15, 2032$0
6,678$94.65Feb 23, 2033$0

Estimate: options held × ($74.16 − strike price), using the most recent insider trade price on Form 4 (May 13, 2026), not a market close.

Claire Farley
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
22K024Kno sales
Vesting, gifts, unvested awards and holding lines for Claire Farley
0shares vested or exercised
0gifted (net of own trusts)
−565withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares21,66824,020
Michael Hanley
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
19K022Kno sales
Vesting, gifts, unvested awards and holding lines for Michael Hanley
0shares vested or exercised
0gifted (net of own trusts)
−540withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares19,19721,574
Robin Buchanan
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
16K020Kno sales
Vesting, gifts, unvested awards and holding lines for Robin Buchanan
0shares vested or exercised
0gifted (net of own trusts)
−1.2Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares16,48219,844
Sabido Izquierdo
i
Includes unvested RSUs, amount not disclosed.
EVP & Chief Financial Officer
15K033Kno sales
Vesting, gifts, unvested awards and holding lines for Sabido Izquierdo
0shares vested or exercised
0gifted (net of own trusts)
−2.2Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Includes unvested RSUs, amount not disclosed.
Held throughShare classOct 8, 2025Oct 8, 2026
Direct
includes unvested RSUs, amount not disclosed
Class A Ordinary Shares15,25033,499

Stock options (not counted as shares):

Options heldStrike priceExpiresIntrinsic value (estimate)
1,607$94.65May 23, 2033$0

Estimate: options held × ($74.16 − strike price), using the most recent insider trade price on Form 4 (May 13, 2026), not a market close.

Tracey Campbell
!
Holdings couldn't be fully reconciled. Balance changed with no matching transaction and no footnote: +1,496.007 shares on Feb 28, 2026 (Spouse). See the filing Sales and other transactions for Tracey Campbell are complete.
EVP, Sustainability & Corp Aff
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Tracey Campbell
0shares vested or exercised
0gifted (net of own trusts)
−865withheld by the company for taxes
none reportedunvested awards, start → end
  • Includes unvested RSUs, amount not disclosed.
  • Unvested RSUs stated in footnotes are excluded from owned shares.

Holdings couldn't be fully reconciled. Balance changed with no matching transaction and no footnote: +1,496.007 shares on Feb 28, 2026 (Spouse). The balances below are as reported, not verified totals.

Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares7,0398,829
Spouse
includes unvested RSUs, amount not disclosed
Class A Ordinary Shares4,1776,855
Albert Manifold
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
10K013Kno sales
Vesting, gifts, unvested awards and holding lines for Albert Manifold
0shares vested or exercised
0gifted (net of own trusts)
−689withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares10,35612,584
Lincoln Benet
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
9.6K011Kno sales
Vesting, gifts, unvested awards and holding lines for Lincoln Benet
0shares vested or exercised
0gifted (net of own trusts)
−1.4Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares9,55311,060
Anthony Chase
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
8.9K011Kno sales
Vesting, gifts, unvested awards and holding lines for Anthony Chase
0shares vested or exercised
0gifted (net of own trusts)
−540withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares8,90511,282
Robert Dudley
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
5.3K07.5Kno sales
Vesting, gifts, unvested awards and holding lines for Robert Dudley
0shares vested or exercised
0gifted (net of own trusts)
−708withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares5,2907,499
Virginia Kamsky
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
4.7K08.5Kno sales
Vesting, gifts, unvested awards and holding lines for Virginia Kamsky
0shares vested or exercised
0gifted (net of own trusts)
−974withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares4,6738,543
Aaron Ledet
!
Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +148.5326 shares on Dec 15, 2025 (Direct). See the filing Sales and other transactions for Aaron Ledet are complete.
EVP, I&D & Supply Chain
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Aaron Ledet
0shares vested or exercised
0gifted (net of own trusts)
−1.6Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +148.5326 shares on Dec 15, 2025 (Direct). The balances below are as reported, not verified totals.

Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares3,3588,241

Stock options (not counted as shares):

Options heldStrike priceExpiresIntrinsic value (estimate)
3,678$94.65Feb 23, 2033$0
750$89.26Feb 24, 2032$0
518$80.68Dec 15, 2032$0

Estimate: options held × ($74.16 − strike price), using the most recent insider trade price on Form 4 (May 13, 2026), not a market close.

Laan van der
!
Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -5,437 shares on Feb 25, 2026 (Direct). See the filing Sales and other transactions for Laan van der are complete.
EVP, Circular & Low Carbon Sol
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Laan van der
0shares vested or exercised
0gifted (net of own trusts)
−3.2Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: -5,437 shares on Feb 25, 2026 (Direct). The balances below are as reported, not verified totals.

Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares3,2526,568
Rita Griffin
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
2.8K05Kno sales
Vesting, gifts, unvested awards and holding lines for Rita Griffin
0shares vested or exercised
0gifted (net of own trusts)
−639withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares2,7555,033
Trisha Conley
i
Unvested RSUs stated in footnotes are excluded from owned shares.
EVP, People and Culture
1.7K011Kno sales
Vesting, gifts, unvested awards and holding lines for Trisha Conley
0shares vested or exercised
0gifted (net of own trusts)
−3Kwithheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares1,66210,601
Bridget Karlin
i
Unvested RSUs stated in footnotes are excluded from owned shares.
Director
1.4K05.5Kno sales
Vesting, gifts, unvested awards and holding lines for Bridget Karlin
0shares vested or exercised
0gifted (net of own trusts)
−899withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.
Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares1,3915,513
Matthew Hayes
!
Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +211.4093 shares on Oct 15, 2025 (Direct). See the filing Sales and other transactions for Matthew Hayes are complete.
SVP & CAO
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Matthew Hayes
0shares vested or exercised
0gifted (net of own trusts)
−564withheld by the company for taxes
none reportedunvested awards, start → end
  • Unvested RSUs stated in footnotes are excluded from owned shares.

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +211.4093 shares on Oct 15, 2025 (Direct). The balances below are as reported, not verified totals.

Held throughShare classOct 8, 2025Oct 8, 2026
DirectClass A Ordinary Shares1,3213,142

Stock options (not counted as shares):

Options heldStrike priceExpiresIntrinsic value (estimate)
1,581$94.65Feb 23, 2033$0

Estimate: options held × ($74.16 − strike price), using the most recent insider trade price on Form 4 (May 13, 2026), not a market close.

19 of 23 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (19 exactly, 0 with a minor or footnoted difference). For 4 we show sales but not holdings; the ! icon on their rows explains why. Percentages cover 19 of 23 officers and directors. Left out: Tracey Campbell, Aaron Ledet, Laan van der and Matthew Hayes (holdings couldn't be fully reconciled). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.

What explains the selling$742K of sales by plan status, purpose, seller and month

Officer and director open-market sales: $742K across 10,000 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

No plan disclosed · $742K

Sales with no 10b5-1 plan and no tax reference in the filing. $742K of it is Jeffrey Kaplan. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Jeffrey Kaplan, May 13, 2026

Taxes

70,434 shares ($4.1M) were withheld by the company for taxes, which isn't a market sale.

Purchases · 1 buyer (1 trade)

1 officer or director bought shares in this period, in 1 trade(Form 4 code P). Across all their filings on record there are 34 purchase trades.

SellerShares soldProceedsUnder a disclosed planShare of totalSales dates
Jeffrey Kaplan
EVP, Chief PC, Leg & Corp Ofc
10K$742K0%100%May 13, 2026 to May 13, 2026

Sales by month

MonthSale proceedsDisclosed planTo cover taxesNo plan disclosed
Oct 2025$0$0$0$0
Nov 2025$0$0$0$0
Dec 2025$0$0$0$0
Jan 2026$0$0$0$0
Feb 2026$0$0$0$0
Mar 2026$0$0$0$0
Apr 2026$0$0$0$0
May 2026$742K$0$0$742K
Jun 2026$0$0$0$0
Jul 2026$0$0$0$0
Aug 2026$0$0$0$0
Sep 2026$0$0$0$0
Oct 2026$0$0$0$0
Is this normal? Selling year by year5 earlier years to compare with

Less than usual: about a quarter of the 5-year average. 1 insider sold; the average is 4 a year.

12 months endingShares soldInsiders who soldProceeds
Oct 8, 2026
Latest 12 months
10K1$742K
Oct 8, 2025
1 year earlier
20K1$1.1M
Oct 8, 2024
2 years earlier
102K6$10.1M
Oct 9, 2023
3 years earlier
22K3$2.1M
Oct 9, 2022
4 years earlier
42K5$4.6M
Oct 9, 2021
5 years earlier
37K5$3.9M

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertainty4 insiders whose holdings couldn't be fully reconciled

Tracey Campbell: holdings couldn't be fully reconciled (difference of 2,928 shares). Balance changed with no matching transaction and no footnote: +1,496.007 shares on Feb 28, 2026 (Spouse). Filing, Feb 28, 2026

Aaron Ledet: holdings couldn't be fully reconciled (difference of 149 shares). Balance changed without a matching transaction, and the footnote does not state the amount: +148.5326 shares on Dec 15, 2025 (Direct). Filing, Dec 15, 2025

Footnote: "Represents shares withheld by the issuer to satisfy tax withholding obligations in connection with the vesting 202 shares of restricted stock units granted to the reporting person on December 15, 2022. | Includes 11,408 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; 3,698 granted on February 22, 2024 of which 1,234 vested on February 22, 2025, 1,232 vest on February 22, 2026; 1,232 vest on February 22, 2027; 2,497 granted on February 27, 2025 that vest on February 27, 2026; 2,497 gran"

Laan van der: holdings couldn't be fully reconciled (difference of -47 shares). Balance changed without a matching transaction, and the footnote does not state the amount: -5,437 shares on Feb 25, 2026 (Direct). Filing, Feb 25, 2026

Footnote: "Represents shares from the settlement of dividend equivalents that accrued on the performance-based stock units prior to vesting and granted to the Reporting Person on February 24, 2022. | Includes 4,668 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 273 granted on October 15, 2022 that vest on October 15, 2025; 1,595 granted on February 23, 2023 that vest on February 23, 2026 and 4,200 granted on February 22, 2024 of which 1,400 vested on February 22, 2025, 1,400 vest on February 22, 2026 and 1,400 vest on February 22, 2027."

Matthew Hayes: holdings couldn't be fully reconciled (difference of 354 shares). Balance changed without a matching transaction, and the footnote does not state the amount: +211.4093 shares on Oct 15, 2025 (Direct). Filing, Oct 15, 2025

Footnote: "On October 15, 2025 the reporting person's restricted stock units automatically vested 624 shares. 152 shares were withheld by the issuer to satisfy the issuer's tax withholding obligations. | Includes 2,920 restricted stock units ("RSUs") granted pursuant to the issuer's long-term incentive plan: 417 granted on February 23, 2023 that vest on February 23, 2026; 237 granted on February 22, 2024 that vest on February 22, 2026; 237 granted on February 22, 2024 that vest on February 22, 2027; 307 granted on February 27, 2025 that vest on February 27, 2026; 623 granted on October 15, 2024 that vest"

Inferred rename: "ACOF III and the Ares Funds, respectively) and the officers, partners, members and managers of the Ares Entities and the Ares Funds expressly disclaims beneficial ownership of" is treated as the same holder as "such investment vehicle) and the officers, partners, members and managers of the Ares Entities and the Ares Funds expressly disclaims beneficial ownership of", because the old name was never reported again and the new one opened with the same balance (18,675,709 shares). Old name, new name

Inferred rename: "such investment vehicle) and the officers, partners, members and managers of the Ares Entities and the Ares Funds expressly disclaims beneficial ownership of" is treated as the same holder as "each such investment vehicle) and the officers, partners, members and managers of the Ares Entities and the Ares Funds expressly disclaims beneficial ownership of", because the old name was never reported again and the new one opened with the same balance (18,639,209 shares). Old name, new name

Inferred rename: "each such investment vehicle) and the officers, partners, members and managers of the Ares Entities and the Ares Funds expressly disclaims beneficial ownership of" is treated as the same holder as "See Notes", because the old name was never reported again and the new one opened with the same balance (18,604,709 shares). Old name, new name

Inferred rename: "company" is treated as the same holder as "corporation", because the old name was never reported again and the new one opened with the same balance (16,000,000 shares). Old name, new name

Inferred rename: "corporation" is treated as the same holder as "AI European Holdings S.a r.l", because the old name was never reported again and the new one opened with the same balance (16,000,000 shares). Old name, new name

Inferred rename: "AI International Chemicals S.a r.l" is treated as the same holder as "AIIC and may be deemed to be indirectly beneficially owned by AIIH, Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik because AIIH holds a majority of the outstanding voting interests in AIIC, Access Industries Holdings LLC controls a majority of the outstanding voting interests in AIIH, Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC, AIIH and AIIC", because the old name was never reported again and the new one opened with the same balance (41,144,973 shares). Old name, new name

Inferred rename: "AI European Holdings S.a r.l" is treated as the same holder as "AI European Holdings L.P", because the old name was never reported again and the new one opened with the same balance (16,000,000 shares). Old name, new name

Inferred rename: "AIIC and may be deemed to be indirectly beneficially owned by AIIH, Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik because AIIH holds a majority of the outstanding voting interests in AIIC, Access Industries Holdings LLC controls a majority of the outstanding voting interests in AIIH, Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC, AIIH and AIIC" is treated as the same holder as "AI International Chemicals LLC", because the old name was never reported again and the new one opened with the same balance (45,244,973 shares). Old name, new name

Inferred rename: "AIPH and may be deemed to be indirectly beneficially owned by Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik because Access Industries Holdings LLC controls a majority of the outstanding voting interests in AIPH, Access Industries, LLC holds a majority of the outstanding voting interests in Access Industries Holdings LLC, Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC and AIPH and Mr" is treated as the same holder as "AIPH and may be deemed to be indirectly beneficially owned by Access Industries, LLC, Access Industries Holdings LLC, Access Industries Management, LLC and Len Blavatnik because Access Industries Holdings LLC controls a majority of the outstanding voting interests in AIPH, Access Industries, LLC controls a majority of the outstanding voting interests in Access Industries Holdings LLC, Access Industries Management, LLC controls Access Industries, LLC, Access Industries Holdings LLC and AIPH and Mr", because the old name was never reported again and the new one opened with the same balance (3,522,699 shares). Old name, new name

Inferred rename: "AI International Chemicals LLC" is treated as the same holder as "LYB Holdco LLC", because the old name was never reported again and the new one opened with the same balance (41,198,908 shares). Old name, new name

Inferred rename: "Altep 2010, Altep 2014 L.P" is treated as the same holder as "AI Altep Investments LLC", because the old name was never reported again and the new one opened with the same balance (5,655,466 shares). Old name, new name

Inferred rename: the share class "Class A Ordinary Shares" is treated as the same class as "Ordinary shares" on 1 holding line, because the old title was never reported again on those lines and each balance carried over exactly. Example (AI INVESTMENTS HOLDINGS LLC, 297,080 shares): old title, new title

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology1,266 filings from SEC EDGAR, and how we read them

All 1,266 Forms 3, 4 and 5 filed for LyondellBasell (SEC CIK 1489393) from Oct 13, 2010 to Oct 2, 2026, retrieved from SEC EDGAR on Oct 8, 2026. Prices are the ones reported in each filing, often weighted averages.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (54)No filing in 18 months; last reported balances, not in any total
NameLast filedLast reported balance
Michael McMurrayMar 3, 202576,227 shares, last reported balance as of Feb 27, 2025
Chukwuemeka OyoluMar 3, 202522,171 shares, last reported balance as of Feb 27, 2025
Kenneth LaneFeb 27, 202461,496 shares, last reported balance as of Feb 26, 2024
James GuilfoyleFeb 23, 202446,240 shares, last reported balance as of Feb 21, 2024
Jagjeet BindraMay 31, 202315,961 shares, last reported balance as of May 26, 2023
Nance DiccianiMay 31, 202330,905 shares, last reported balance as of May 26, 2023
Anup SharmaJan 4, 20236,558 shares, last reported balance as of Dec 31, 2022
Stephen CooperJul 5, 202237,599 shares, last reported balance as of Jun 30, 2022
Bhavesh PatelJan 4, 2022333,427 shares, last reported balance as of Dec 31, 2021
Jacinth SmileyApr 6, 20211,588 shares, last reported balance as of Apr 2, 2021
Daniel CoombsAug 4, 202031,137 shares, last reported balance as of Jul 31, 2020
Meer van derJun 2, 202017,521 shares, last reported balance as of May 30, 2020
Isabella GorenMay 29, 20208,474 shares, last reported balance as of May 28, 2020
Richard RoudeixFeb 24, 202011,789 shares, last reported balance as of Feb 20, 2020
Thomas AebischerJan 3, 202027,265 shares, last reported balance as of Dec 31, 2019
Massimo CovezziNov 8, 20195,735 shares, last reported balance as of Nov 7, 2019
Paul AugustowskiSep 4, 201913,133 shares, last reported balance as of Sep 2, 2019
Bruce SmithJun 4, 201931,472 shares, last reported balance as of May 31, 2019
Stephen DoktyczMar 6, 20193,123 shares, last reported balance as of Mar 4, 2019
Darleen CaronFeb 25, 2019No balance on record
Robert GwinDec 4, 201821,471 shares, last reported balance as of Nov 30, 2018
Jacquelyn WolfFeb 22, 20179,036 shares, last reported balance as of Feb 22, 2017
Kevin BrownFeb 21, 2017128,714 shares, last reported balance as of Feb 16, 2017
Michael VanDerSnickFeb 21, 201710,096 shares, last reported balance as of Feb 16, 2017
Michael SumruldFeb 21, 2017No balance on record
Milton CarrollMay 16, 20163,893 shares, last reported balance as of May 12, 2016
Sergey VasnetsovApr 26, 2016No balance on record
AI International GP LtdMar 17, 201616,000,000 shares, last reported balance as of Jan 13, 2016
William Allen Jr.Feb 18, 20161,989 shares, last reported balance as of Feb 16, 2016
Timothy RobertsJan 25, 201613,468 shares, last reported balance as of Jan 21, 2016
Lawrence SommaSep 11, 20151,160 shares, last reported balance as of Sep 9, 2015
Samuel SmolikJun 23, 20156,644 shares, last reported balance as of Jun 22, 2015
Jean GadboisJun 3, 20152,000 shares, last reported balance as of Jun 1, 2015
Patrick QuarlesJun 2, 20159,365 shares, last reported balance as of May 29, 2015
Karyn OvelmenMay 26, 20151 shares, last reported balance as of May 22, 2015
Stephen WesselsMay 1, 20159,120 shares, last reported balance as of Apr 30, 2015
Craig GliddenMar 19, 201517,955 shares, last reported balance as of Feb 17, 2015
James GalloglyJan 14, 20151,103,289 shares, last reported balance as of Jan 13, 2015
Karen SwindlerMay 2, 20145,161 shares, last reported balance as of Apr 30, 2014
Scott KleinmanOct 24, 20132,075 shares, last reported balance as of Oct 18, 2013
Apollo Management Holdings GP, LLCAug 8, 2013210,618,091 shares, last reported balance as of Aug 6, 2013
Marvin SchlangerMay 24, 201314,527 shares, last reported balance as of May 22, 2013
Francesco SveltoMay 16, 2013No balance on record
Wendy JohnsonMay 2, 201317,798 shares, last reported balance as of Apr 30, 2013
AI Petroleum Holdings LLCDec 12, 201216,000,000 shares, last reported balance as of Dec 10, 2012
AI European Holdings SarlDec 7, 201264,000,000 shares, last reported balance as of Dec 7, 2012
Joshua HarrisMay 11, 2012No balance on record
Paramjit SinghMay 9, 201221,607 shares, last reported balance as of May 7, 2012
Paul DaviesDec 16, 201178,546 shares, last reported balance as of Oct 13, 2010
ROYAL BANK OF SCOTLAND GROUP PLCJul 22, 201135,461,356 shares, last reported balance as of Dec 3, 2010
Clifford PotterJun 8, 20112,000 shares, last reported balance as of Jun 7, 2011
ARES CORPORATE OPPORTUNITIES FUND III LPMay 18, 201178,174,121 shares, last reported balance as of May 16, 2011
Jeffrey SerotaMay 9, 20118,422 shares, last reported balance as of May 5, 2011
Anton de VriesNov 9, 2010No balance on record