Trinseo (TSEOF) Shares Outstanding (2012 - 2026)

Trinseo (TSEOF) has 15 years of Shares Outstanding data on file, last reported at $36.6 million in Q1 2026.

• Quarterly Shares Outstanding rose 2.81% year-over-year to $36.6 million in Q1 2026, while the trailing twelve-month figure through Mar 2026 was $36.6 million (up 2.81% YoY) and the FY2025 annual result came in at $40.1 million, up 13.28% from the prior year.
• Shares Outstanding declined to $36.6 million in Q1 2026 per TSEOF's latest filing, from $40.1 million in the prior quarter.
• Across five years, Shares Outstanding topped out at $37.2 million in Q1 2022 and bottomed at $35.1 million in Q3 2022.
• The 5-year median for Shares Outstanding is $35.4 million (2024), against an average of $35.7 million.
• The widest annual swing landed in 2022, when Shares Outstanding slipped 9.54%; it then climbed 13.28% in 2025.
• Tracing TSEOF's Shares Outstanding over 5 years: stood at $35.1 million in 2022, then grew by 0.28% to $35.2 million in 2023, then advanced by 0.57% to $35.4 million in 2024, then gained by 13.28% to $40.1 million in 2025, then declined by 8.73% to $36.6 million in 2026.
• Per Business Quant, the three latest TSEOF Shares Outstanding figures stand at $36.6 million (Q1 2026), $40.1 million (Q4 2025), and $36.0 million (Q3 2025).

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