As of September 29, 2026, the three largest insider holders of LYB are Investments Holdings Llc Ai (TenPercentOwner, 6.04Mn shares), Peter Z. E. Vanacker (Chief Executive Officer, 248.55K shares), Bhavesh V. Patel (Chief Executive Officer, 126.05K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Investments Holdings Llc Ai | TenPercentOwner | 765,154 | 5,270,918 | 6,036,072 | 80.2% | 11 Mar, 2026 |
| 2 | Peter Z. E. Vanacker | Chief Executive Officer | 248,554 | 0 | 248,554 | 3.3% | 03 Mar, 2026 |
| 3 | Bhavesh V. Patel | Chief Executive Officer | 126,052 | 0 | 126,052 | 1.7% | 04 Jan, 2022 |
| 4 | Torkel Rhenman | Evp, Adv Polymer Solutions | 116,836 | 0 | 116,836 | 1.6% | 03 Mar, 2026 |
| 5 | Michael C. Mcmurray | Evp Cfo | 113,108 | 0 | 113,108 | 1.5% | 03 Mar, 2025 |
| 6 | Jeffrey A Kaplan | Evp, Chief Pc, Leg Corp Ofc | 96,674 | 0 | 96,674 | 1.3% | 15 May, 2026 |
| 7 | Kimberly A Foley | Evp, Global Op And Refining | 90,291 | 0 | 90,291 | 1.2% | 03 Mar, 2026 |
| 8 | Kenneth Todd Lane | Evp, Olefins And Polyolefins | 89,445 | 0 | 89,445 | 1.2% | 27 Feb, 2024 |
| 9 | James D Guilfoyle | Svp, Op (Eamei) | 63,501 | 0 | 63,501 | 0.8% | 23 Feb, 2024 |
| 10 | Dale D Friedrichs | Evp, Ops Excellence, Hse | 63,407 | 0 | 63,407 | 0.8% | 03 Mar, 2026 |
| 11 | James Malcolm Seward | Evp Chief Innovation Officer | 45,731 | 0 | 45,731 | 0.6% | 03 Mar, 2026 |
| 12 | Jacques Aigrain | Director | 37,534 | 0 | 37,534 | 0.5% | 26 May, 2026 |
| 13 | Chukwuemeka A. Oyolu | Svp, Cao | 37,528 | 0 | 37,528 | 0.5% | 03 Mar, 2025 |
| 14 | Trisha L Conley | Evp, People And Culture | 33,766 | 0 | 33,766 | 0.4% | 03 Mar, 2026 |
| 15 | Sabido Agustin Izquierdo | Evp Chief Financial Officer | 33,499 | 0 | 33,499 | 0.4% | 17 Apr, 2026 |
| 16 | Aaron J Ledet | Evp, Id Supply Chain | 31,714 | 0 | 31,714 | 0.4% | 03 Mar, 2026 |
| 17 | Nance K Dicciani | Director | 30,905 | 0 | 30,905 | 0.4% | 31 May, 2023 |
| 18 | Claire S Farley | Director | 26,341 | 0 | 26,341 | 0.3% | 26 May, 2026 |
| 19 | Der Laan Yvonne Van | Evp, Circular Low Carbon Sol | 24,733 | 0 | 24,733 | 0.3% | 03 Mar, 2026 |
| 20 | Michael Sean Hanley | Director | 23,895 | 0 | 23,895 | 0.3% | 26 May, 2026 |
| 21 | Robin W.T. Buchanan | Director | 22,165 | 0 | 22,165 | 0.3% | 26 May, 2026 |
| 22 | Stephen Forbes Cooper | Director | 21,210 | 0 | 21,210 | 0.3% | 05 Jul, 2022 |
| 23 | Tracey D Campbell | Evp, Sustainability Corp Aff | 18,360 | 0 | 18,360 | 0.2% | 03 Mar, 2026 |
| 24 | Albert Jude Manifold | Director | 14,905 | 0 | 14,905 | 0.2% | 26 May, 2026 |
| 25 | Anthony R Chase | Director | 13,603 | 0 | 13,603 | 0.2% | 26 May, 2026 |
| 26 | Lincoln E Benet | Director | 13,381 | 0 | 13,381 | 0.2% | 26 May, 2026 |
| 27 | Virginia A Kamsky | Director | 10,283 | 0 | 10,283 | 0.1% | 02 Jul, 2026 |
| 28 | Robert W. Dudley | Director | 9,820 | 0 | 9,820 | 0.1% | 26 May, 2026 |
| 29 | Matthew D Hayes | Svp Cao | 8,970 | 0 | 8,970 | 0.1% | 17 Apr, 2026 |
| 30 | Rita E Griffin | Director | 7,354 | 0 | 7,354 | 0.1% | 26 May, 2026 |
| 31 | Bridget E Karlin | Director | 7,247 | 0 | 7,247 | 0.1% | 02 Jul, 2026 |
| 32 | Jagjeet S. Bindra | Director | 6,761 | 0 | 6,761 | 0.1% | 31 May, 2023 |
| 33 | Anup Sharma | Svp, Global Business Services | 6,558 | 0 | 6,558 | 0.1% | 04 Jan, 2023 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 30 Jun, 2026 | Virginia A Kamsky | Director | Acquired A | 561 | $0.00 | $0 | 10,383 | Direct |
| 30 Jun, 2026 | Bridget E Karlin | Director | Acquired A | 615 | $0.00 | $0 | 7,320 | Direct |
| 30 Jun, 2026 | Bridget E Karlin | Director | Disposed F | 73 | $52.65 | $3.84K | 7,247 | Direct |
| 30 Jun, 2026 | Virginia A Kamsky | Director | Disposed F | 100 | $52.65 | $5.27K | 10,283 | Direct |
| 21 May, 2026 | Lincoln E Benet | Director | Acquired A | 2,321 | $0.00 | $0 | 14,791 | Direct |
| 21 May, 2026 | Bridget E Karlin | Director | Acquired A | 2,321 | $0.00 | $0 | 7,226 | Direct |
| 21 May, 2026 | Virginia A Kamsky | Director | Acquired A | 2,321 | $0.00 | $0 | 10,415 | Direct |
| 21 May, 2026 | Claire S Farley | Director | Acquired A | 2,321 | $0.00 | $0 | 26,906 | Direct |
| 21 May, 2026 | Jacques Aigrain | Director | Acquired A | 4,437 | $0.00 | $0 | 38,109 | Direct |
| 21 May, 2026 | Robin W.T. Buchanan | Director | Acquired A | 2,321 | $0.00 | $0 | 23,412 | Direct |
| 21 May, 2026 | Anthony R Chase | Director | Acquired A | 2,321 | $0.00 | $0 | 14,143 | Direct |
| 21 May, 2026 | Michael Sean Hanley | Director | Acquired A | 2,321 | $0.00 | $0 | 24,435 | Direct |
| 21 May, 2026 | Albert Jude Manifold | Director | Acquired A | 2,321 | $0.00 | $0 | 15,594 | Direct |
| 21 May, 2026 | Rita E Griffin | Director | Acquired A | 2,321 | $0.00 | $0 | 7,993 | Direct |
| 21 May, 2026 | Robert W. Dudley | Director | Acquired A | 2,321 | $0.00 | $0 | 10,528 | Direct |
| 22 May, 2026 | Jacques Aigrain | Director | Disposed F | 575 | $69.72 | $40.09K | 37,534 | Direct |
| 22 May, 2026 | Claire S Farley | Director | Disposed F | 565 | $69.72 | $39.39K | 26,341 | Direct |
| 22 May, 2026 | Robert W. Dudley | Director | Disposed F | 708 | $69.72 | $49.36K | 9,820 | Direct |
| 22 May, 2026 | Virginia A Kamsky | Director | Disposed F | 593 | $69.72 | $41.34K | 9,822 | Direct |
| 22 May, 2026 | Bridget E Karlin | Director | Disposed F | 521 | $69.72 | $36.32K | 6,705 | Direct |