Conley Trisha L 4

What Happened Trisha L. Conley, EVP, People and Culture at LyondellBasell (LYB), had restricted stock units (RSUs) that automatically vested on February 22 and February 23, 2026. To satisfy tax withholding obligations, the issuer withheld 552 shares on Feb 22 at $56.67 ($31,282) and 976 shares on Feb 23 at $56.66 ($55,300), for a total of 1,528 shares withheld and approximately $86,582 in value. These were tax-withholding dispositions (code F), not open-market sales.

Key Details

• Transaction dates and amounts:
  • 2026-02-22: 552 shares withheld @ $56.67 = $31,282 (footnote F1)
  • 2026-02-23: 976 shares withheld @ $56.66 = $55,300 (footnote F3)
• Shares/RSUs referenced after each line:
  • Feb 22 line notes 15,022 RSUs (see footnote F2 — detailed vesting schedule listed there).
  • Feb 23 line notes 11,014 RSUs (see footnote F4 — detailed vesting schedule listed there).
• Notable footnotes:
  • F1/F3: RSUs automatically vested (2,265 on Feb 22; 4,008 on Feb 23) and the listed shares were withheld to satisfy taxes.
  • F2/F4: Describe remaining RSU grants and vesting schedules (lists of grant dates and future vesting dates).
• Filing timeliness: Form 4 filed 2026-02-24 for transactions on 2026-02-22 and 2026-02-23 — appears timely (filed within the typical two-business-day window).

Context These transactions are routine tax-withholding actions when RSUs vest: the company retains (withholds) a portion of the vested shares to cover the insider’s tax liability. This is not the same as the insider selling shares on the open market and does not necessarily indicate a change in the insider’s view of the company.