Latest 10-Q

What changed in Ecovyst Inc.'s latest quarterly report, compared with the one before.

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Insider trades

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.

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13F holders

Funds that report this stock, checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.

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Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.

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Lobbying

What Ecovyst Inc. and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.

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Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

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More filings and data

Each opens the table.

About the company

The basics from the company’s SEC registration.

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$10.97+$0.22 (+2.05%) Nov 13 close
Oct 13, 2026: $10.08Oct 14, 2026: $9.92Oct 15, 2026: $10.17Oct 16, 2026: $10.28Oct 19, 2026: $10.13Oct 20, 2026: $10.07Oct 21, 2026: $9.97Oct 22, 2026: $9.81Oct 23, 2026: $9.79Oct 26, 2026: $9.83Oct 27, 2026: $9.97Oct 28, 2026: $10.19Oct 29, 2026: $10.24Oct 30, 2026: $10.12Nov 2, 2026: $10.05Nov 3, 2026: $10.05Nov 4, 2026: $9.97Nov 5, 2026: $10.18Nov 6, 2026: $10.49Nov 9, 2026: $10.76Nov 10, 2026: $10.65Nov 11, 2026: $10.82Nov 12, 2026: $10.75Nov 13, 2026: $10.97
Oct 13, 2026Low $9.79 · High $10.97Nov 13, 2026
Aug 13, 2026: $10.08Aug 14, 2026: $10.39Aug 17, 2026: $10.39Aug 18, 2026: $10.31Aug 19, 2026: $10.45Aug 20, 2026: $10.32Aug 21, 2026: $10.44Aug 24, 2026: $10.07Aug 25, 2026: $10.13Aug 26, 2026: $10.21Aug 27, 2026: $10.15Aug 28, 2026: $10.11Aug 31, 2026: $10.17Sep 1, 2026: $10.10Sep 2, 2026: $10.37Sep 3, 2026: $10.21Sep 4, 2026: $10.21Sep 8, 2026: $10.12Sep 9, 2026: $10.25Sep 10, 2026: $10.07Sep 11, 2026: $9.92Sep 14, 2026: $9.97Sep 15, 2026: $10.54Sep 16, 2026: $10.88Sep 17, 2026: $10.64Sep 18, 2026: $10.44Sep 21, 2026: $10.39Sep 22, 2026: $10.45Sep 23, 2026: $10.33Sep 24, 2026: $10.14Sep 25, 2026: $10.14Sep 28, 2026: $10.04Sep 29, 2026: $9.80Sep 30, 2026: $9.83Oct 1, 2026: $9.96Oct 2, 2026: $10.12Oct 5, 2026: $10.37Oct 6, 2026: $10.37Oct 7, 2026: $10.31Oct 8, 2026: $10.21Oct 9, 2026: $10.05Oct 12, 2026: $9.92Oct 13, 2026: $10.08Oct 14, 2026: $9.92Oct 15, 2026: $10.17Oct 16, 2026: $10.28Oct 19, 2026: $10.13Oct 20, 2026: $10.07Oct 21, 2026: $9.97Oct 22, 2026: $9.81Oct 23, 2026: $9.79Oct 26, 2026: $9.83Oct 27, 2026: $9.97Oct 28, 2026: $10.19Oct 29, 2026: $10.24Oct 30, 2026: $10.12Nov 2, 2026: $10.05Nov 3, 2026: $10.05Nov 4, 2026: $9.97Nov 5, 2026: $10.18Nov 6, 2026: $10.49Nov 9, 2026: $10.76Nov 10, 2026: $10.65Nov 11, 2026: $10.82Nov 12, 2026: $10.75Nov 13, 2026: $10.97
Aug 13, 2026Low $9.79 · High $10.97Nov 13, 2026
Nov 13, 2025: $8.59Nov 14, 2025: $8.56Nov 17, 2025: $8.31Nov 18, 2025: $8.32Nov 19, 2025: $8.38Nov 20, 2025: $8.14Nov 21, 2025: $8.39Nov 24, 2025: $8.56Nov 25, 2025: $8.91Nov 26, 2025: $9.13Nov 28, 2025: $9.20Dec 1, 2025: $9.23Dec 2, 2025: $9.04Dec 3, 2025: $9.06Dec 4, 2025: $8.53Dec 5, 2025: $8.74Dec 8, 2025: $8.55Dec 9, 2025: $8.75Dec 10, 2025: $9.04Dec 11, 2025: $9.28Dec 12, 2025: $9.16Dec 15, 2025: $9.31Dec 16, 2025: $9.23Dec 17, 2025: $9.39Dec 18, 2025: $9.54Dec 19, 2025: $9.59Dec 22, 2025: $9.66Dec 23, 2025: $9.66Dec 24, 2025: $9.82Dec 26, 2025: $9.96Dec 29, 2025: $9.96Dec 30, 2025: $9.87Dec 31, 2025: $9.73Jan 2, 2026: $9.91Jan 5, 2026: $9.91Jan 6, 2026: $10.20Jan 7, 2026: $10.16Jan 8, 2026: $10.46Jan 9, 2026: $10.58Jan 12, 2026: $10.50Jan 13, 2026: $10.62Jan 14, 2026: $10.73Jan 15, 2026: $10.79Jan 16, 2026: $10.70Jan 20, 2026: $10.62Jan 21, 2026: $10.95Jan 22, 2026: $11.16Jan 23, 2026: $11.15Jan 26, 2026: $11.02Jan 27, 2026: $10.87Jan 28, 2026: $10.73Jan 29, 2026: $10.82Jan 30, 2026: $10.61Feb 2, 2026: $10.79Feb 3, 2026: $11.02Feb 4, 2026: $11.00Feb 5, 2026: $10.74Feb 6, 2026: $11.05Feb 9, 2026: $11.15Feb 10, 2026: $11.20Feb 11, 2026: $11.66Feb 12, 2026: $11.46Feb 13, 2026: $11.62Feb 17, 2026: $11.64Feb 18, 2026: $11.57Feb 19, 2026: $11.64Feb 20, 2026: $11.59Feb 23, 2026: $11.42Feb 24, 2026: $11.59Feb 25, 2026: $11.32Feb 26, 2026: $11.45Feb 27, 2026: $11.27Mar 2, 2026: $11.32Mar 3, 2026: $11.47Mar 4, 2026: $11.50Mar 5, 2026: $11.34Mar 6, 2026: $11.03Mar 9, 2026: $11.23Mar 10, 2026: $11.05Mar 11, 2026: $11.07Mar 12, 2026: $11.44Mar 13, 2026: $11.48Mar 16, 2026: $11.89Mar 17, 2026: $12.18Mar 18, 2026: $11.85Mar 19, 2026: $11.76Mar 20, 2026: $11.65Mar 23, 2026: $11.98Mar 24, 2026: $12.51Mar 25, 2026: $12.99Mar 26, 2026: $13.00Mar 27, 2026: $12.84Mar 30, 2026: $12.86Mar 31, 2026: $12.86Apr 1, 2026: $13.12Apr 2, 2026: $13.04Apr 6, 2026: $13.22Apr 7, 2026: $13.01Apr 8, 2026: $13.14Apr 9, 2026: $13.43Apr 10, 2026: $13.93Apr 13, 2026: $14.42Apr 14, 2026: $14.07Apr 15, 2026: $14.04Apr 16, 2026: $14.41Apr 17, 2026: $13.78Apr 20, 2026: $13.64Apr 21, 2026: $13.83Apr 22, 2026: $13.75Apr 23, 2026: $13.82Apr 24, 2026: $13.82Apr 27, 2026: $14.15Apr 28, 2026: $13.99Apr 29, 2026: $13.97Apr 30, 2026: $14.18May 1, 2026: $14.36May 4, 2026: $14.12May 5, 2026: $14.73May 6, 2026: $14.68May 7, 2026: $13.97May 8, 2026: $14.14May 11, 2026: $14.42May 12, 2026: $14.59May 13, 2026: $14.68May 14, 2026: $14.97May 15, 2026: $14.56May 18, 2026: $14.42May 19, 2026: $14.06May 20, 2026: $13.98May 21, 2026: $13.33May 22, 2026: $13.81May 26, 2026: $14.06May 27, 2026: $13.96May 28, 2026: $13.36May 29, 2026: $13.19Jun 1, 2026: $13.03Jun 2, 2026: $13.26Jun 3, 2026: $13.08Jun 4, 2026: $12.93Jun 5, 2026: $12.85Jun 8, 2026: $12.90Jun 9, 2026: $12.79Jun 10, 2026: $12.75Jun 11, 2026: $12.94Jun 12, 2026: $13.09Jun 15, 2026: $12.97Jun 16, 2026: $12.85Jun 17, 2026: $12.88Jun 18, 2026: $12.82Jun 22, 2026: $12.89Jun 23, 2026: $12.79Jun 24, 2026: $12.63Jun 25, 2026: $12.12Jun 26, 2026: $12.19Jun 29, 2026: $12.29Jun 30, 2026: $12.45Jul 1, 2026: $12.00Jul 2, 2026: $11.83Jul 6, 2026: $11.81Jul 7, 2026: $11.81Jul 8, 2026: $11.96Jul 9, 2026: $11.90Jul 10, 2026: $11.90Jul 13, 2026: $11.92Jul 14, 2026: $12.18Jul 15, 2026: $12.27Jul 16, 2026: $12.88Jul 17, 2026: $12.89Jul 20, 2026: $12.40Jul 21, 2026: $12.64Jul 22, 2026: $12.94Jul 23, 2026: $12.89Jul 24, 2026: $12.46Jul 27, 2026: $12.24Jul 28, 2026: $12.32Jul 29, 2026: $12.03Jul 30, 2026: $12.09Jul 31, 2026: $12.06Aug 3, 2026: $12.05Aug 4, 2026: $12.11Aug 5, 2026: $11.45Aug 6, 2026: $11.00Aug 7, 2026: $10.38Aug 10, 2026: $10.08Aug 11, 2026: $10.12Aug 12, 2026: $9.93Aug 13, 2026: $10.08Aug 14, 2026: $10.39Aug 17, 2026: $10.39Aug 18, 2026: $10.31Aug 19, 2026: $10.45Aug 20, 2026: $10.32Aug 21, 2026: $10.44Aug 24, 2026: $10.07Aug 25, 2026: $10.13Aug 26, 2026: $10.21Aug 27, 2026: $10.15Aug 28, 2026: $10.11Aug 31, 2026: $10.17Sep 1, 2026: $10.10Sep 2, 2026: $10.37Sep 3, 2026: $10.21Sep 4, 2026: $10.21Sep 8, 2026: $10.12Sep 9, 2026: $10.25Sep 10, 2026: $10.07Sep 11, 2026: $9.92Sep 14, 2026: $9.97Sep 15, 2026: $10.54Sep 16, 2026: $10.88Sep 17, 2026: $10.64Sep 18, 2026: $10.44Sep 21, 2026: $10.39Sep 22, 2026: $10.45Sep 23, 2026: $10.33Sep 24, 2026: $10.14Sep 25, 2026: $10.14Sep 28, 2026: $10.04Sep 29, 2026: $9.80Sep 30, 2026: $9.83Oct 1, 2026: $9.96Oct 2, 2026: $10.12Oct 5, 2026: $10.37Oct 6, 2026: $10.37Oct 7, 2026: $10.31Oct 8, 2026: $10.21Oct 9, 2026: $10.05Oct 12, 2026: $9.92Oct 13, 2026: $10.08Oct 14, 2026: $9.92Oct 15, 2026: $10.17Oct 16, 2026: $10.28Oct 19, 2026: $10.13Oct 20, 2026: $10.07Oct 21, 2026: $9.97Oct 22, 2026: $9.81Oct 23, 2026: $9.79Oct 26, 2026: $9.83Oct 27, 2026: $9.97Oct 28, 2026: $10.19Oct 29, 2026: $10.24Oct 30, 2026: $10.12Nov 2, 2026: $10.05Nov 3, 2026: $10.05Nov 4, 2026: $9.97Nov 5, 2026: $10.18Nov 6, 2026: $10.49Nov 9, 2026: $10.76Nov 10, 2026: $10.65Nov 11, 2026: $10.82Nov 12, 2026: $10.75Nov 13, 2026: $10.97
Nov 13, 2025Low $8.14 · High $14.97Nov 13, 2026
Congress purchase Congress sale Insider sale over $1M

Adjusted for stock splits; not for dividends. Where prices come from.

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