Koscinski Joseph S. [Rocket]

Date	Name	Symbol	Type	Security	Shares	Price	Value	Reported
07/01/2023	Ecovyst Inc.	ECVT	Payment of Exercise	Common Stock	52.8k	$11.37	$600.7k	07/01/2023
03/08/2023	Ecovyst Inc.	ECVT	Grant	Common Stock	12.3k	$0.00	$0	03/08/2023
11/16/2022	Ecovyst Inc.	ECVT	Exercise	Stock Option (right to buy)	9.9k	$1.88	$18.7k	11/16/2022
11/16/2022	Ecovyst Inc.	ECVT	Exercise	Stock Option (right to buy)	5k	$1.88	$9.3k	11/16/2022
08/04/2022	Ecovyst Inc.	ECVT	Purchase	Common Stock	11.4k	$8.79	$100.3k	08/04/2022
03/01/2022	Ecovyst Inc.	ECVT	Grant	Common Stock	24.3k	$0.00	$0	03/01/2022
01/17/2022	Ecovyst Inc.	ECVT	Grant	Common Stock	121.5k	$0.00	$0	01/17/2022
01/17/2022	Ecovyst Inc.	ECVT	Grant	Common Stock	72.9k	$0.00	$0	01/17/2022
01/18/2021	Ecovyst Inc.	ECVT	Grant	Common Stock	81.2k	$0.00	$0	01/18/2021
01/20/2020	Ecovyst Inc.	ECVT	Grant	Common Stock	22.5k	$0.00	$0	01/20/2020
01/05/2020	Ecovyst Inc.	ECVT	Payment of Exercise	Common Stock	3.4k	$16.61	$56.3k	01/05/2020
11/01/2019	Ecovyst Inc.	ECVT	Payment of Exercise	Common Stock	5.1k	$16.39	$84.1k	11/01/2019
03/11/2019	Ecovyst Inc.	ECVT	Grant	Common Stock	24.3k	$0.00	$0	03/11/2019
06/30/2018	Ecovyst Inc.	ECVT	Payment of Exercise	Common Stock	3.4k	$17.94	$60.2k	06/30/2018