Ecovyst Inc.
ECVT- Exchange
- NYSE
- Industry
- Chemicals & Allied Products
- SEC CIK
- 0001708035
In the last 90 days, Ecovyst Inc. insiders filed 1 open-market purchase and 0 sales; 208 institutions reported holding it in 13F filings for Q2 2026, worth $1.37B in total; no superinvestor holds it.
Holders of 5% or more of ECVT
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Ecovyst Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Rubric Capital Management LP | 13G | 9.09%10.4M shares | New | Nov 14, 20251 filing | Nov 14, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 7.70%8.53M shares | – | Apr 24, 20261 filing | Apr 24, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.25%5.81M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
8 Schedule 13D and 13G filings on Ecovyst Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 8, 20263:47 PM ET | Hotchkis & Wiley Capital Management LLC | 13G/A | 4.90%5.41M shares | −2.84 ppfrom 7.74%Below 5% | Mar 31, 2026 | SEC |
| Apr 29, 20266:09 PM ET | Vanguard Capital Management LLC | 13G | 5.25%5.81M shares | New | Mar 31, 2026 | SEC |
| Apr 24, 20264:11 PM ET | BlackRock, Inc. | 13G/A | 7.70%8.53M shares | – | Mar 31, 2026 | SEC |
| Mar 26, 20266:06 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Nov 14, 20255:01 PM ET | Rubric Capital Management LPand 1 other | 13G | 9.09%10.4M shares | New | Sep 30, 2025 | SEC |
| Nov 14, 20259:29 AM ET | Hotchkis & Wiley Capital Management LLC | 13G/A | 7.74%8.85M shares | −1.82 ppfrom 9.56% | Sep 30, 2025 | SEC |
| Aug 13, 20258:47 PM ET | Hotchkis & Wiley Capital Management LLC | 13G/A | 9.56%11.2M shares | – | Jun 30, 2025 | SEC |
| Jul 2, 20254:28 PM ET | INEOS Ltdand 1 other | 13D/A | 0.00%0 shares | –Below 5% | Jun 30, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Ecovyst Inc. shares.
No Form 144 notices for Ecovyst Inc. are on file.