What SEC filings does Ecovyst Inc. submit to the SEC?

Ecovyst Inc. (ECVT) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about ECVT?

A Form 4 for ECVT discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Ecovyst Inc.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for ECVT?

The 10-K is Ecovyst Inc.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all ECVT SEC filings directly on EDGAR?

You can view all historical Ecovyst Inc. filings on the SEC EDGAR company page for ECVT. Each filing card on this page links directly to the original SEC document.

How often does Ecovyst Inc. file with the SEC?

Ecovyst Inc. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling ECVT shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

ECVT SEC Filing News — Ecovyst Inc.

Latest SEC filings for Ecovyst Inc. (ECVT) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-09-14.

Ecovyst Inc. offers virgin and regenerated sulfuric acid products and services in the United States and internationally. It offers end-to-end logistics for production of alkylate for refineries mining, water treatment, and industrial applications. The company was formerly known as PQ Group Holdings Inc. and changed its name to Ecovyst Inc. in August 2021. Ecovyst Inc. was founded in 1831 and is headquartered in Wayne, Pennsylvania.

Sector: Basic Materials Industry: Specialty Chemicals Market Cap: $1.1B CIK: 1708035

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

What you're looking at: Each item below is parsed from an actual SEC filing submitted by Ecovyst Inc.. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.

ECVT Filing Activity Snapshot 2026-02-05 — 2026-09-14

Insider Transactions (Form 4)

1 buy vs 1 sell

Insider buying and selling activity is balanced in this period.

Largest Form 144 Filing

$385.5K

Susan Ward · 2026-07-17

29,886 shares · Form 144

Form 144 Notices

Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 8 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 8 filings in this group are Form 4s for Ecovyst Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 8 insider filings shown, the breakdown is 5 compensation award, 1 option exercise, 1 open-market purchase and 1 open-market sale. 2 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Compensation award ×5: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Option exercise ×1: The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.
Open-market purchase ×1: The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Open-market sale ×1: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Form 4 Open-market purchase Insider Buying 2026-09-14

ECVT insider Humble Patti A. (Director) bought 24,875 shares (~$250.0K)

Humble Patti A., listed as Director at Ecovyst Inc., reported an open-market purchase of 24,875 ECVT shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	24,875	$10.05	$250.0K

Filing: Form 4 (Insider Transaction) Insider: Humble Patti A. (Director) Shares: 24,875 Est. Value: $250.0K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-08-26

ECVT insider Form 4 filed for equity award, exercise, or tax withholding

Bergman Laurie (See Remarks) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	43,353	—	—

Filing: Form 4 (Insider Transaction) Insider: Bergman Laurie (See Remarks) Shares: 43,353

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-06-03

ECVT insider Lorance Sarah (Director) sold 8,450 shares (~$112.6K)

Lorance Sarah, listed as Director at Ecovyst Inc., reported an open-market sale of 8,450 ECVT shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	8,450	$13.33	$112.6K

Filing: Form 4 (Insider Transaction) Insider: Lorance Sarah (Director) Shares: 8,450 Est. Value: $112.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-27

ECVT insider Form 4 filed for equity award, exercise, or tax withholding

Humble Patti A. (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	9,099	$13.61	$123.8K

Filing: Form 4 (Insider Transaction) Insider: Humble Patti A. (Director) Shares: 9,099

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-03-16

ECVT insider Form 4 filed for equity award, exercise, or tax withholding

Bitting Kurt (Director, See Remarks) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	38,064	$3.04	$115.7K
`M`	Option exercise derivative · Option (Right to Buy)	9,516	—	—
`M`	Option exercise derivative · Option (Right to Buy)	9,516	—	—
`M`	Option exercise derivative · Option (Right to Buy)	9,516	—	—
`M`	Option exercise derivative · Option (Right to Buy)	9,516	—	—

Filing: Form 4 (Insider Transaction) Insider: Bitting Kurt (Director, See Remarks) Shares: 38,064

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-03-06

ECVT insider Form 4 filed for equity award, exercise, or tax withholding

Feehan Michael (See Remarks) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	11,052	$11.31	$125.0K

Filing: Form 4 (Insider Transaction) Insider: Feehan Michael (See Remarks) Shares: 11,052

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-03-06

ECVT insider Form 4 filed for equity award, exercise, or tax withholding

Koscinski Joseph S. (See Remarks) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	11,052	$11.31	$125.0K

Filing: Form 4 (Insider Transaction) Insider: Koscinski Joseph S. (See Remarks) Shares: 11,052

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-02-05

ECVT insider Form 4 filed for equity award, exercise, or tax withholding

Bradley David A. (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	19,399	—	—

Filing: Form 4 (Insider Transaction) Insider: Bradley David A. (Director) Shares: 19,399

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 2 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Ecovyst Inc. has 2 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-07-17

ECVT Form 144 filed for proposed insider sale by Susan Ward (29,886 shares) ~$385.5K

Susan Ward filed a Form 144 with the SEC indicating intent to sell ECVT (Ecovyst Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Susan Ward Shares: 29,886 Est. Value: $385.5K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-06-02

ECVT Form 144 filed for proposed insider sale by SARAH J LORANCE (8,450 shares) ~$112.6K

SARAH J LORANCE filed a Form 144 with the SEC indicating intent to sell ECVT (Ecovyst Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: SARAH J LORANCE Shares: 8,450 Est. Value: $112.6K

View on SEC EDGAR → Open Filing Document →

Material Events 7 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 7 in this period for Ecovyst Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-24