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Public ownership evidence

Ecovyst Inc. (ECVT) Ownership Disclosures

Read ECVT insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-09-142026-09-10Humble Patti A.P24,875Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-10 and its public availability date is 2026-09-14. Subtracting those calendar dates gives 4 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code P: a purchase. A purchase code is only one eligibility check. Confirm reporting-owner role, amendment lineage and coverage before treating it as a strategy input.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001708035-26-000099 ↗SEC 0001193125-26-368534 ↗13F 0001005354-26-000004 ↗

Recent Form 4 activity

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2026-09-142026-09-10Humble Patti A.P24,875Not reported
2026-08-272026-08-24Bergman LaurieA43,353Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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VIRGINIA RETIREMENT SYSTEMS ET Al2026-03-312026-08-26206,900$2,660,734None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-26224,400$2,793,780None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25122,443$1,524,415None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-251,524,415$122,443,000None
Empowered Funds, LLC2026-06-302026-08-18561,125$6,986,006None
Empowered Funds, LLC2026-06-302026-08-1814,240$177,288None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-185,222$65,014None
SEI INVESTMENTS CO2026-06-302026-08-15471,792$5,873,810None
SEI INVESTMENTS CO2026-06-302026-08-15725$9,030None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-151,829$22,771None
Quarry LP2026-06-302026-08-15233$2,901None
Integrated Quantitative Investments LLC2026-06-302026-08-1526,021$323,961None
XTX Topco Ltd2026-06-302026-08-15192,763$2,399,899None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-151,898,885$23,641,118None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-151,898,885$23,641,118None
ExodusPoint Capital Management, LP2026-06-302026-08-15362,506$4,513,200None
Qube Research & Technologies Ltd2026-06-302026-08-151,663,145$20,706,155None
OSAIC HOLDINGS, INC.2026-06-302026-08-151,360$16,932None
Man Group plc2026-06-302026-08-15138,801$1,728,072None
Trexquant Investment LP2026-06-302026-08-15421,136$5,243,143None
MetLife Investment Management, LLC2026-06-302026-08-1566,057$822,410None
Engineers Gate Manager LP2026-06-302026-08-1543,902$546,580None
JANE STREET GROUP, LLC2026-06-302026-08-15122,331$1,523,021None
JANE STREET GROUP, LLC2026-06-302026-08-1580,869$1,006,819None
BTG Pactual Asset Management US LLC2026-06-302026-08-1531,678$394,391None
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-1545,163$562,279None
Legal & General Group Plc2026-06-302026-08-1570,760$880,962None
Legal & General Group Plc2026-06-302026-08-1521,615$269,107None
Legal & General Group Plc2026-06-302026-08-1510,686$133,041None
HRT FINANCIAL LP2026-06-302026-08-15534,190$6,650,000None
Tiptree Advisors, LLC2026-06-302026-08-15400,000$4,980,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15285,700$3,556,965Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1519,554$243,447None
Apis Capital Advisors, LLC2026-06-302026-08-15540,000$6,723,000None
Gotham Asset Management, LLC2026-06-302026-08-15261,889$3,260,518None
BROWN ADVISORY INC2026-06-302026-08-154,459,937$55,526,213None
BROWN ADVISORY INC2026-06-302026-08-1573,578$916,046None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1559,276$737,986None
VARCOV Co.2026-06-302026-08-15125,347$1,560,570None
TWINBEECH CAPITAL LP2026-06-302026-08-1563,067$785,184None
LAZARD ASSET MANAGEMENT LLC2026-06-302026-08-15288,194$3,588,015None
Allianz Asset Management GmbH2026-06-302026-08-15894,838$11,140,733None
Thrivent Financial for Lutherans2026-06-302026-08-15196,839$2,451,000None
Thrivent Financial for Lutherans2026-06-302026-08-15120,372$1,499,000None
AMERIPRISE FINANCIAL INC2026-06-302026-08-1515,804$196,760None
AMERIPRISE FINANCIAL INC2026-06-302026-08-15101,820$1,267,659None
AMERIPRISE FINANCIAL INC2026-06-302026-08-152,111,880$26,292,909None
Freestone Grove Partners LP2026-06-302026-08-1528,502$354,850None
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC2026-06-302026-08-151,404,452$17,485,427None
MANGROVE PARTNERS IM, LLC2026-06-302026-08-1514,851$184,895None

90-day public filing window, up to 50 source positions.

VIRGINIA RETIREMENT SYSTEMS ET Al ↗VIRGINIA RETIREMENT SYSTEMS ET Al ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗Empowered Funds, LLC ↗Empowered Funds, LLC ↗PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO ↗SEI INVESTMENTS CO ↗SEI INVESTMENTS CO ↗Aster Capital Management (DIFC) Ltd ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.