Boston Partners closes position in ECVT / Ecovyst Inc.

生態維斯特公司

US ˙ NYSE ˙ US27923Q1094

Security	ECVT / Ecovyst Inc.
Institution	Boston Partners
Latest Disclosed Ownership	0 shares
Latest Disclosed Value	$ 0

On February 13, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 0 shares of Ecovyst Inc. (US:ECVT) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 3,225,459 shares of Ecovyst Inc.. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)

File Date	Effective Date	Form	Security	Class	ID	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-02-13	2025-12-31	13F	ECOVYST	COM	27923Q109	0		-100.00	0
2025-11-13	2025-09-30	13F	ECOVYST	COM	27923Q109	3,225,459	-16,826	-0.52	28,099	4.91	0.0118
2025-08-12	2025-06-30	13F/A-1	ECOVYST	COM	27923Q109	3,242,285	2,472,377	321.13	26,785	461.39	0.0297
2025-08-07	2025-06-30	13F	ECOVYST	COM	27923Q109	3,242,285	2,472,377		26,785		0.0299
2025-05-13	2025-03-31	13F	ECOVYST	COM	27923Q109	769,908	-1,631,903	-67.94	4,772	-74.08	0.0058
2025-02-11	2024-12-31	13F	ECOVYST	COM	27923Q109	2,401,811	557,249	30.21	18,405	47.16	0.0224
2024-11-12	2024-09-30	13F	ECOVYST	COM	27923Q109	1,844,562	-1,311,947	-41.56	12,507	-56.09	0.0148
2024-08-14	2024-06-30	13F	ECOVYST	COM	27923Q109	3,156,509	-169,133	-5.09	28,479	-21.92	0.0354
2024-05-28	2024-03-31	13F/A-1	ECOVYST	COM	27923Q109	3,325,642	-335,170	-9.16	36,476	2.82	0.0434
2024-05-13	2024-03-31	13F	ECOVYST	COM	27923Q109	3,325,642	-335,170		36,476		0.0180
2024-02-07	2023-12-31	13F	ECOVYST	COM	27923Q109	3,660,812	-440,733	-10.75	35,474	-11.40	0.0470
2023-11-08	2023-09-30	13F	ECOVYST	COM	27923Q109	4,101,545	-71,261	-1.71	40,038	-14.98	0.0554
2023-08-10	2023-06-30	13F	ECOVYST	COM	27923Q109	4,172,806	-11,039	-0.26	47,091	1.18	0.0634
2023-05-09	2023-03-31	13F	ECOVYST	COM	27923Q109	4,183,845	1,267,211	43.45	46,541	75.22	0.0640
2023-02-08	2022-12-31	13F	ECOVYST	COM	27923Q109	2,916,634	684,613	30.67	26,562	37.67	0.0359
2022-11-09	2022-09-30	13F	ECOVYST	COM	27923Q109	2,232,021	941,864	73.00	19,294	50.07	0.0282
2022-08-10	2022-06-30	13F	ECOVYST	COM	27923Q109	1,290,157	23,230	1.83	12,857	-11.97	0.0180
2022-05-10	2022-03-31	13F	ECOVYST	COM	27923Q109	1,266,927	-42,577	-3.25	14,605	9.29	0.0177
2022-02-04	2021-12-31	13F	ECOVYST	COM	27923Q109	1,309,504	34,453	2.70	13,364	-10.10	0.0161
2021-11-05	2021-09-30	13F	ECOVYST	COM	27923Q109	1,275,051	-165,185	-11.47	14,865	-32.59	0.0188
2021-08-12	2021-06-30	13F	PQ GROUP HLDGS	COM	73943T103	1,440,236	-23,894	-1.63	22,051	-9.80	0.0281
2021-05-10	2021-03-31	13F	PQ GROUP HLDGS	COM	73943T103	1,464,130	-26,416	-1.77	24,446	15.01	0.0328
2021-02-10	2020-12-31	13F/A-1	PQ GROUP HLDGS	COM	73943T103	1,490,546	-75,519	-4.82	21,255	32.29	0.0331
2021-02-04	2020-12-31	13F	PQ GROUP HLDGS	COM	73943T103	1,490,546	-75,519		21,255		12,751.7366
2020-11-13	2020-09-30	13F/A-1	PQ GROUP HLDGS	COM	73943T103	1,566,065	-38,680	-2.41	16,067	-24.40	0.0293
2020-11-09	2020-09-30	13F	PQ GROUP HLDGS	COM	73943T103	1,604,745	0		21,252		15,601.4996
2020-08-12	2020-06-30	13F	PQ GROUP HLDGS	COM	73943T103	1,604,745	-573,308	-26.32	21,252	-10.35	0.0390
2020-05-13	2020-03-31	13F	PQ GROUP HLDGS	COM	73943T103	2,178,053	99,360	4.78	23,706	-33.52	0.0471
2020-02-06	2019-12-31	13F/A-1	PQ GROUP HLDGS	COM	73943T103	2,078,693	92	0.00	35,660	7.42	0.0472
2020-02-05	2019-12-31	13F	PQ GROUP HLDGS	COM	73943T103	2,078,693	92		35,660		20,049.0935
2019-11-20	2019-09-30	13F/A-1	PQ GROUP HLDGS	COM	73943T103	2,078,601	-41,901	-1.98	33,197	-1.28	0.0450
2019-11-08	2019-09-30	13F	PQ GROUP HLDGS	COM	73943T103	2,122,023	1,521		33,718		0.0446
2019-08-26	2019-06-30	13F/A-1	PQ GROUP HLDGS	COM	73943T103	2,120,502	-65,947	-3.02	33,629	1.39	0.0441
2019-08-09	2019-06-30	13F	PQ GROUP HLDGS	COM	73943T103	2,120,502	-65,947		33,629
2019-05-13	2019-03-31	13F/A-1	PQ GROUP HLDGS	COM	73943T103	2,186,449	49,885	2.33	33,168	4.82	0.0439
2019-05-03	2019-03-31	13F	PQ GROUP HLDGS	COM	73943T103	2,186,449	49,885		33,168
2019-02-07	2018-12-31	13F	PQ GROUP HLDGS	COM	73943T103	2,136,564	117,467	5.82	31,642	-10.29	0.0455
2018-11-14	2018-09-30	13F	PQ GROUP HLDGS	COM	73943T103	2,019,097	-1,016,096	-33.48	35,273	-35.44	0.0410
2018-08-03	2018-06-30	13F	PQ GROUP HLDGS	COM	73943T103	3,035,193	67,320	2.27	54,634	31.77	0.0655
2018-05-04	2018-03-31	13F	PQ GROUP HLDGS	COM	73943T103	2,967,873	-93,262	-3.05	41,461	-17.66	0.0500
2018-02-14	2017-12-31	13F/A-1	PQ GROUP HLDGS	COM	73943T103	3,061,135	447,302	17.11	50,356	11.68	0.0593
2018-02-01	2017-12-31	13F	PQ GROUP HLDGS	COM	73943T103	3,061,135	447,302		50,356
2017-11-02	2017-09-30	13F	PQ GROUP HLDGS	COM	73943T103	2,613,833	2,613,833		45,088		0.0557

Legend

Shares: The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value: The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price: The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class: This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred

Allocation (%): The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation: The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%): The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis: The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss: This is the market value of the position as of the effective date minus the cost basis.