Trinseo (TSEOQ) Shares Outstanding (Diluted Average) (2013 - 2026)

Trinseo has disclosed Shares Outstanding (Diluted Average) across 14 years of filings, most recently posting $36.2 million for Q1 2026.

• In Q1 2026, Shares Outstanding (Diluted Average) rose 1.97% year-over-year to $36.2 million; the TTM figure through Mar 2026 stood at $36.2 million (up 1.97% YoY), while the FY2025 annual figure was $35.8 million, up 1.42% from the prior year.
• Shares Outstanding (Diluted Average) grew to $36.2 million in Q1 2026, from $35.8 million in the prior quarter.
• Over the last five years, Shares Outstanding (Diluted Average) for TSEOQ reached as high as $38.1 million in Q1 2022 and fell as low as $35.0 million in Q1 2023.
• The 5-year median for Shares Outstanding (Diluted Average) is $35.4 million (2024), against an average of $35.7 million.
• Annual changes were most pronounced in 2022 — Shares Outstanding (Diluted Average) decreased 10.89% — and 2026, when it gained 1.97%.
• A 5-year view of Shares Outstanding (Diluted Average) shows it stood at $35.9 million in 2022, then declined by 1.67% to $35.3 million in 2023, then changed by 0.0% to $35.3 million in 2024, then gained by 1.42% to $35.8 million in 2025, then gained by 1.12% to $36.2 million in 2026.
• According to Business Quant data, Shares Outstanding (Diluted Average) over the past three periods registered $36.2 million, $35.8 million, and $36.0 million for Q1 2026, Q4 2025, and Q3 2025 respectively.