ECOVYST INC

Ticker: ECVT CUSIP: 27923Q109 Class: EQTY

Rockefeller Capital Management L.P.'s Holding History (CIK: 0001739439)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 675 Value ($000) $7 Avg Close $8.73 Range $7.41 - $10.01

Q4 2022

Shares 2,153 Value ($000) $0 Avg Close $9.21 Range $8.20 - $10.26

Q3 2022

Shares 2,356 Value ($000) $19 Avg Close $9.51 Range $8.24 - $10.98

Q2 2022

Shares 499 Value ($000) $4 Avg Close $10.39 Range $9.13 - $11.91

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	675	$7	$8.73	$7.41 - $10.01
Q4 2022	2,153	$0	$9.21	$8.20 - $10.26
Q3 2022	2,356	$19	$9.51	$8.24 - $10.98
Q2 2022	499	$4	$10.39	$9.13 - $11.91