Ecovyst Inc. Common Stock Shares Outstanding

• Ecovyst Inc. showed a decrease of -4.1% in Common Stock Shares Outstanding from 2024 to 2025.
• This data is from Ecovyst Inc.'s annual report (Form 10-K), filed with the SEC on February 27, 2026.
• XBRL data for this metric is available from 2016 to 2025 (10 years of filings). Earlier data may not exist in machine-readable XBRL format as companies adopted electronic filing at different times.
• Quarterly values from 10-Q filings: Q3 2017: 104.11 million shares | Q1 2018: 135.24 million shares | Q2 2018: 135.14 million shares | Q3 2018: 135.21 million shares | Q4 2018: 135.59 million shares | Q1 2019: 135.73 million shares | Q2 2019: 136.10 million shares | Q3 2019: 136.16 million shares | Q1 2020: 136.60 million shares | Q2 2020: 136.05 million shares | Q3 2020: 136.06 million shares | Q1 2021: 136.93 million shares | Q2 2021: 136.95 million shares | Q3 2021: 136.95 million shares | Q1 2022: 138.70 million shares | Q2 2022: 137.82 million shares | Q3 2022: 130.10 million shares | Q1 2023: 120.12 million shares | Q2 2023: 116.26 million shares | Q3 2023: 116.12 million shares | Q1 2024: 117.00 million shares | Q2 2024: 116.47 million shares | Q3 2024: 116.51 million shares | Q1 2025: 117.39 million shares | Q2 2025: 114.49 million shares | Q3 2025: 114.02 million shares.
• Over the full 10 years of available data (2016 to 2025), Ecovyst Inc.'s Common Stock Shares Outstanding has grown by 5.0%.
• Historical annual values: Fiscal year 2025: 111.81 million shares | Fiscal year 2024: 116.53 million shares | Fiscal year 2023: 116.12 million shares | Fiscal year 2022: 122.19 million shares | Fiscal year 2021: 136.94 million shares | Fiscal year 2020: 136.32 million shares | Fiscal year 2019: 136.46 million shares | Fiscal year 2018: 135.59 million shares | Fiscal year 2017: 135.24 million shares | Fiscal year 2016: 106.43 million shares.
• Data sourced from SEC EDGAR public filings as of August 10, 2026.

Last verified: August 10, 2026