Ecovyst Inc.
Ecovyst Inc. (ECVT) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ECVT · as of Sep 30, 2025
Ownership Breakdown
169
Institutional Holders
▼ 9 vs Q2
$1.04B
Total Inst. Value
▲ $60.60M vs Q2
109.45M
Shares Outstanding
freeFloat 89.32%
118.52M
13F Shares Held
▼ 487,986 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ECVT largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC chemicals & allied products | 10.92M | 9.40% | 9.40% | $95.67B | Nov 7, 2025 | ▲ 267.7K |
RUBRIC CAPITAL MANAGEMENT LP chemicals & allied products | 10.40M | 8.95% | 8.95% | $91.10B | Nov 14, 2025 | ▲ 5.69M |
BLACKROCK, INC. chemicals & allied products | 10.27M | 8.83% | 8.83% | $89.95B | Nov 12, 2025 | ▲ 103.1K |
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC chemicals & allied products | 8.85M | 7.62% | 7.62% | $77.54B | Nov 14, 2025 | ▼ 2.37M |
DIMENSIONAL FUND ADVISORS LP chemicals & allied products | 6.26M | 5.38% | 5.38% | $54.81B | Nov 12, 2025 | ▲ 77.4K |
BROWN ADVISORY INC chemicals & allied products | 5.47M | 4.71% | 4.71% | $47.96B | Nov 14, 2025 | NEW |
MANGROVE PARTNERS chemicals & allied products | 5.47M | 4.71% | 4.71% | $47.95B | Nov 14, 2025 | ▲ 935.6K |
ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC chemicals & allied products | 4.51M | 3.88% | 3.88% | $38.62B | Oct 20, 2025 | ▼ 361.9K |
SHAPIRO CAPITAL MANAGEMENT LLC chemicals & allied products | 3.91M | 3.36% | 3.36% | $34.26B | Nov 14, 2025 | ▼ 1.69M |
BOSTON PARTNERS chemicals & allied products | 3.23M | 2.77% | 2.77% | $28.10B | Nov 13, 2025 | ▼ 16.8K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
24
Increased
+11.41M shares5
New Positions
first time holders17
Decreased
−8.41M shares0
Sold Out
fully exitedNet shares change (top 50)
+3.00M
+11.41M / −8.41M
Net new holders
+12
5 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ECVT insider trading · insider activity
Source: SEC Form 4
1
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Humble Patti A. director | May 26, 2026 | Award | 9,099 | $13.61 | $123.8K | 9.1K | Form 4 ↗ |
Feehan Michael See Remarks | Mar 4, 2026 | Award | 11,052 | $11.31 | $125.0K | 389.1K | Form 4 ↗ |
Koscinski Joseph S. See Remarks | Mar 4, 2026 | Award | 11,052 | $11.31 | $125.0K | 595.8K | Form 4 ↗ |
Bradley David A. director | Feb 3, 2026 | Award | 19,399 | — | — | 108.0K | Form 4 ↗ |
Fogarty Kevin Michael director | Feb 3, 2026 | Award | 38,798 | — | — | 216.0K | Form 4 ↗ |
Catalano Anna C director | Feb 3, 2026 | Award | 19,399 | — | — | 102.8K | Form 4 ↗ |
Lorance Sarah director | Feb 3, 2026 | Award | 19,399 | — | — | 63.1K | Form 4 ↗ |
Bitting Kurt See Remarks | Feb 3, 2026 | Award | 116,392 | — | — | 660.3K | Form 4 ↗ |
Bitting Kurt See Remarks | Feb 3, 2026 | Tax Withhold | 25,925 | $10.31 | $267.3K | 543.9K | Form 4 ↗ |
Ward Susan F director | Feb 3, 2026 | Award | 19,399 | — | — | 97.7K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Ecovyst Inc. (ECVT) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 10.68%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Ecovyst Inc. is VANGUARD GROUP INC, holding approximately 10.92 million shares — equal to 9.40% of outstanding shares — as of September 30, 2025.
A total of 169 institutional investors currently hold ECVT stock, with a combined institutional value of approximately $1.04 billion as of the most recent 13F filing period.
Frequently asked questions
ECVT ownershipEcovyst Inc. (ECVT) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 9.40% stake. Company insiders hold 10.68%. Data sourced from SEC Form 13F as of September 30, 2025.