Ecovyst
Regenerates sulfuric acid and supplies virgin acid, treatment services, and catalyst activation.
$10.11
After-hours close−0.01 (−0.05%)
At close$10.12(−0.34%)
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Breakdown13F · Form 4
Institutions 103.34%Insiders 2.28%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 109.45M · Float 97.78M · 89.3% free float
Institutions13F, as of Jun 30, 2026
211 holders · 113.11M shares · 53 new positions · 129 increased · 53 reduced · 43 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 10.67M | 9.74% | +1.93M | Aug 7, 2026 |
| Rubric Capital Management LP | 8.21M | 7.50% | −924.2K | Aug 14, 2026 |
| Dimensional Fund Advisors LP | 6.59M | 6.02% | +86.4K | Aug 11, 2026 |
| Vanguard Portfolio Management LLC | 6.09M | 5.56% | +846.5K | Aug 13, 2026 |
| FMR LLC | 5.33M | 4.87% | +866.3K | Aug 13, 2026 |
| Arrowstreet Capital, Limited Partnership | 5.13M | 4.69% | +303.9K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 4.84M | 4.43% | −133.7K | Aug 13, 2026 |
| Brown Advisory Inc | 4.53M | 4.14% | −308.7K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Rubric Capital Management LP | 9.09% | 10.40M | 13G | Nov 14, 2025 ↗ |
| BlackRock, Inc. | 7.70% | 8.53M | 13G | Apr 24, 2026 ↗ |
| Dimensional Fund Advisors LP | 6.00% | 6.59M | 13G | Jul 14, 2026 ↗ |
| Vanguard Portfolio Management | 5.65% | 6.19M | 13G | Jul 31, 2026 ↗ |
| Vanguard Capital Management | 5.25% | 5.81M | 13G | Apr 29, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Kurt Bitting | director, officer: See Remarks | 698.4K | 0.64% | Mar 16, 2026 |
| Joseph S. Koscinski | officer: See Remarks | 595.8K | 0.54% | Mar 6, 2026 |
| Michael Feehan | officer: See Remarks | 389.1K | 0.36% | Mar 6, 2026 |
| Kevin Michael Fogarty | director | 216.0K | 0.20% | Feb 5, 2026 |
| Bryan K. Brown | director | 109.0K | 0.10% | Feb 5, 2026 |
| David A. Bradley | director | 108.0K | 0.10% | Feb 5, 2026 |
| Anna C. Catalano | director | 102.8K | 0.09% | Feb 5, 2026 |
| Susan F. Ward | director | 97.7K | 0.09% | Feb 5, 2026 |
| Sarah Lorance | director | 63.2K | 0.06% | Feb 5, 2026 |
| Donald L. Althoff | director | 58.4K | 0.05% | Feb 5, 2026 |
1 ten-percent owner holds 10.73M shares by Form 4, outside the officers-and-directors figure above · 21 people have not refiled in the last 18 months (11.19M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Nov 7, 2025 | Susan F. Warddirector | Sale | 15,000 | $8.40 | 78,261 |
CongressHouse and Senate disclosures
Not reported.