Westlake (WLK) Gross Margin (2010 - 2026)

Westlake's Gross Margin history runs 17 years deep, the most recent figure standing at 4.22% for Q1 2026.

• On a quarterly basis, Gross Margin fell 393.0% year-over-year to 4.22% in Q1 2026; TTM through Mar 2026 was 6.31%, a 803.0% decrease from a year earlier, with the FY2025 full-year figure at 7.28%, down 884.0% from the prior year.
• Gross Margin advanced to 4.22% in Q1 2026 per WLK's latest filing, from 3.43% in the prior quarter.
• Across five years, Gross Margin topped out at 32.23% in Q2 2022 and bottomed at 3.43% in Q4 2025.
• The 5-year median for Gross Margin is 16.01% (2024), against an average of 15.69%.
• Biggest YoY gain for Gross Margin was 1009 bps in 2022; the steepest drop was 1406 bps in 2022.
• Year by year, Gross Margin stood at 17.19% in 2022, then slumped by 59 bps to 7.04% in 2023, then surged by 64 bps to 11.54% in 2024, then tumbled by 70 bps to 3.43% in 2025, then rose by 23 bps to 4.22% in 2026.
• Per Business Quant, the three latest WLK Gross Margin figures stand at 4.22% (Q1 2026), 3.43% (Q4 2025), and 8.32% (Q3 2025).