Westlake (WLK) Shares Outstanding (Diluted Average) (2010 - 2026)

Westlake's Shares Outstanding (Diluted Average) history runs 17 years deep, the most recent figure standing at $128.0 million for Q1 2026.

• In Q1 2026, Shares Outstanding (Diluted Average) changed 0.25% year-over-year to $128.0 million; the TTM figure through Mar 2026 stood at $128.0 million (changed 0.25% YoY), while the FY2025 annual figure was $128.3 million, down 0.73% from the prior year.
• Shares Outstanding (Diluted Average) was $128.0 million for Q1 2026 at Westlake, roughly flat from $128.3 million in the prior quarter.
• In the past five years, Shares Outstanding (Diluted Average) ranged from a high of $129.4 million in Q2 2024 to a low of $128.0 million in Q1 2026.
• Historically, Shares Outstanding (Diluted Average) has averaged $128.7 million across 5 years, with a median of $128.6 million in 2023.
• The sharpest annual moves came in 2024 and 2025: Shares Outstanding (Diluted Average) increased 0.67% in 2024, then slipped 0.86% in 2025.
• A 5-year view of Shares Outstanding (Diluted Average) shows it stood at $128.8 million in 2022, then retreated by 0.19% to $128.6 million in 2023, then grew by 0.47% to $129.2 million in 2024, then slipped by 0.73% to $128.3 million in 2025, then declined by 0.21% to $128.0 million in 2026.
• The last three Shares Outstanding (Diluted Average) figures came in at $128.0 million (Q1 2026), $128.3 million (Q4 2025), and $128.3 million (Q3 2025), per Business Quant data.