Ecovyst Inc.
US ˙ NYSE ˙ US27923Q1094

SecurityECVT / Ecovyst Inc.
InstitutionBoothbay Fund Management, Llc
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Boothbay Fund Management, Llc closes position in ECVT / Ecovyst Inc.

On May 15, 2026 - Boothbay Fund Management, Llc filed a 13F-HR form disclosing ownership of 0 shares of Ecovyst Inc. (US:ECVT) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 25,187 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 Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ECOVYST COM 27923Q109 0 -100.00 0
2026-02-17 2025-12-31 13F ECOVYST COM 27923Q109 25,187 -24,808 -49.62 245 -43.94 0.0037
2025-11-14 2025-09-30 13F ECOVYST COM 27923Q109 49,995 -199,779 -79.98 438 -78.73 0.0064
2025-08-14 2025-06-30 13F ECOVYST COM 27923Q109 249,774 100,178 66.97 2,056 121.68 0.0399
2025-05-15 2025-03-31 13F ECOVYST COM 27923Q109 149,596 79,052 112.06 927 72.30 0.0244
2025-02-14 2024-12-31 13F ECOVYST COM 27923Q109 70,544 70,544 539 0.0133
2024-08-14 2024-06-30 13F ECOVYST COM 27923Q109 0 -123,796 -100.00 0 -100.00
2024-05-15 2024-03-31 13F ECOVYST COM 27923Q109 123,796 -220,780 -64.07 1,380 -59.00 0.0266
2024-02-14 2023-12-31 13F ECOVYST COM 27923Q109 344,576 105,377 44.05 3,367 43.05 0.0859
2023-11-14 2023-09-30 13F ECOVYST COM 27923Q109 239,199 4,908 2.09 2,354 -12.33 0.0559
2023-08-14 2023-06-30 13F ECOVYST COM 27923Q109 234,291 5,004 2.18 2,685 5.96 0.0589
2023-05-15 2023-03-31 13F ECOVYST COM 27923Q109 229,287 2,742 1.21 2,534 26.21 0.0520
2023-02-14 2022-12-31 13F ECOVYST COM 27923Q109 226,545 74,854 49.35 2,007 56.80 0.0464
2022-11-14 2022-09-30 13F ECOVYST COM 27923Q109 151,691 52,746 53.31 1,280 31.28 0.0320
2022-08-15 2022-06-30 13F ECOVYST COM 27923Q109 98,945 98,945 975 0.0257
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.