Ecovyst Inc.
A specialty chemicals company that regenerates sulfuric acid for oil refineries and makes catalysts and silica-based materials used in refining, emissions control, and cleaner fuels. Its roots stretch back to 1831, when a Quaker named Joseph Elkinton opened a soap-and-candle shop in Philadelphia that later became PQ Corporation, maker of sodium silicate "waterglass." The company renamed itself Ecovyst in 2021 after selling its performance-chemicals business to focus on sustainability-minded products.
Item 4 of the Original Schedule 13D is hereby amended and supplemented by adding the following: On June 30, 2025, INEOS sold 9,040,415 shares of Common Stock in a private transaction to a broker-dealer at a price per share of $7.60. As a result of such sale, the Reporting Persons no longer beneficially own any shares of Common Stock or have any voting power or dispositive power over any shares of Common Stock.
Item 4 of the Original Schedule 13D is hereby amended and supplemented by adding the following: On June 30, 2025, INEOS sold 9,040,415 shares of Common Stock in a private transaction to a broker-dealer at a price per share of $7.60. As a result of such sale, the Reporting Persons no longer beneficially own any shares of Common Stock or have any voting power or dispositive power over any shares of Common Stock.
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| Vanguard Portfolio Management | 13GPassive | 5.65% | 6.19M | Jul 31, 2026 |
| Dimensional Fund Advisors LP | 13G/APassive | 6% | 6.59M | Jul 14, 2026 |
| Hotchkis and Wiley Capital Management, LLC | 13G/APassive | 4.9% | 5.41M | May 8, 2026 |
| Vanguard Capital Management | 13GPassive | 5.25% | 5.81M | Apr 29, 2026 |
| BlackRock, Inc. | 13G/APassive | 7.7% | 8.53M | Apr 24, 2026 |
| The Vanguard Group | 13G/APassive | 0% | 0 | Mar 26, 2026 |
| Rubric Capital Management LP | 13GPassive | 9.09% | 10.40M | Nov 14, 2025 |
| David Rosen | 13GPassive | 9.09% | 10.40M | Nov 14, 2025 |
| INEOS Limited | 13D/AActivist | 0% | 0 | Jul 2, 2025 |
Item 4 of the Original Schedule 13D is hereby amended and supplemented by adding the following: On June 30, 2025, INEOS sold 9,040,415 shares of Common Stock in a private transaction to a broker-dealer at a price per share of $7.60. As a result of such sale, the Reporting Persons no longer beneficially own any shares of Common Stock or have any voting power or dispositive power over any shares of Common Stock. | ||||
| RATCLIFFE JAMES A | 13D/AActivist | 0% | 0 | Jul 2, 2025 |
Item 4 of the Original Schedule 13D is hereby amended and supplemented by adding the following: On June 30, 2025, INEOS sold 9,040,415 shares of Common Stock in a private transaction to a broker-dealer at a price per share of $7.60. As a result of such sale, the Reporting Persons no longer beneficially own any shares of Common Stock or have any voting power or dispositive power over any shares of Common Stock. | ||||