What SEC filings does Arq, Inc. submit to the SEC?

Arq, Inc. (ARQ) 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 ARQ?

A Form 4 for ARQ 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 Arq, 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 ARQ?

The 10-K is Arq, 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 ARQ SEC filings directly on EDGAR?

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

How often does Arq, Inc. file with the SEC?

Arq, 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 ARQ shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

ARQ SEC Filing News — Arq, Inc.

Latest SEC filings for Arq, Inc. (ARQ) 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: 2026-09-10.

Arq, Inc., an environmental technology company, engages in the sale of consumable air, water, and soil treatment solutions based on activated carbon in the United States and Canada. Its products include granular activated carbon, powdered activated carbon, and colloidal carbon products; and additives for air emissions control. The company's products are used in various applications, including water treatment, ground water remediation, soil sediments, air emissions, and asphalt additives. The com…

Sector: Industrials Industry: Pollution & Treatment Controls Market Cap: $77.7M

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for ARQ currently lean bullish. Of the 20 displayed SEC filing records, 3 carry bullish classifications versus 0 bearish classifications. These labels summarize filing attributes; they are not recommendations, probabilities, or evidence of future price direction. There were 14 insider transactions (Form 4) in this period.

ARQ Filing Activity Snapshot 2026-06-18 — 2026-09-10

Insider Transactions (Form 4)

3 buys vs 0 sells

Net insider buying in this period — more purchases than sales reported.

Largest Form 144 Filing

$36.1K

Steinmetz Shimon (Chief Financial Officer) · 2026-09-08

16,270 shares · Form 4

Insider Transactions 14 · 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 14 filings in this group are Form 4s for Arq, 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 14 insider filings shown, the breakdown is 11 compensation award and 3 open-market purchase. 3 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Compensation award ×11: 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.
Open-market purchase ×3: 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.

Form 4 Open-market purchase Insider Buying 2026-09-10

ARQ insider Steinmetz Shimon (Chief Financial Officer) bought 2,972 shares (~$7.0K)

Steinmetz Shimon, listed as Chief Financial Officer at Arq, Inc., reported an open-market purchase of 2,972 ARQ 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	1,098	$2.34	$2.6K
`P`	Open-market purchase	1,874	$2.34	$4.4K

Filing: Form 4 (Insider Transaction) Insider: Steinmetz Shimon (Chief Financial Officer) Shares: 2,972 Est. Value: $7.0K

View on SEC EDGAR → Open Filing Document →

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

ARQ insider Steinmetz Shimon (Chief Financial Officer) bought 5,758 shares (~$13.1K)

Steinmetz Shimon, listed as Chief Financial Officer at Arq, Inc., reported an open-market purchase of 5,758 ARQ 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	1,402	$2.29	$3.2K
`P`	Open-market purchase	4,356	$2.27	$9.9K

Filing: Form 4 (Insider Transaction) Insider: Steinmetz Shimon (Chief Financial Officer) Shares: 5,758 Est. Value: $13.1K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-09-08

ARQ insider Steinmetz Shimon (Chief Financial Officer) bought 16,270 shares (~$36.1K)

Steinmetz Shimon, listed as Chief Financial Officer at Arq, Inc., reported an open-market purchase of 16,270 ARQ 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	7,500	$2.22	$16.6K
`P`	Open-market purchase	8,770	$2.23	$19.5K

Filing: Form 4 (Insider Transaction) Insider: Steinmetz Shimon (Chief Financial Officer) Shares: 16,270 Est. Value: $36.1K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-03

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

Owino Peter Oluoch (Chief Accounting Officer) 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	100,000	—	—
`A`	Compensation award	61,047	—	—
`A`	Compensation award derivative · Performance Share Units	61,047	—	—

Filing: Form 4 (Insider Transaction) Insider: Owino Peter Oluoch (Chief Accounting Officer) Shares: 161,047

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-08-18

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

Wong Joseph M (Chief Technology Officer) 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	55,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Wong Joseph M (Chief Technology Officer) Shares: 55,000

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-08-04

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

Steinmetz Shimon (Chief Financial Officer) 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	250,000	—	—
`A`	Compensation award	93,023	—	—
`A`	Compensation award derivative · Performance Share Units	150,000	—	—
`A`	Compensation award derivative · Performance Share Units	93,023	—	—

Filing: Form 4 (Insider Transaction) Insider: Steinmetz Shimon (Chief Financial Officer) Shares: 343,023

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-08-04

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

Smith Claiborne Benson (Gen Counsel, Corp Secretary) 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	61,047	—	—
`A`	Compensation award derivative · Performance Share Units	61,047	—	—

Filing: Form 4 (Insider Transaction) Insider: Smith Claiborne Benson (Gen Counsel, Corp Secretary) Shares: 61,047

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-08-04

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

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	61,047	—	—
`A`	Compensation award derivative · Performance Share Units	61,047	—	—

Filing: Form 4 (Insider Transaction) Insider: Wong Joseph M (Chief Technology Officer) Shares: 61,047

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-23

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

Rasmus Robert E. (Director, Chief Executive Officer) 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
`D`	Disposition to issuer derivative · Restricted Stock Units	400,000	—	—
`A`	Compensation award derivative · Restricted Stock Units	400,000	—	—
`A`	Compensation award derivative · Restricted Stock Units	600,000	—	—
`A`	Compensation award derivative · Restricted Stock Units	600,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Rasmus Robert E. (Director, Chief Executive Officer)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-06

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

EICHER CAROL S (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	24,641	—	—

Filing: Form 4 (Insider Transaction) Insider: EICHER CAROL S (Director) Shares: 24,641

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-06

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

Blank Jeremy (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	49,283	—	—

Filing: Form 4 (Insider Transaction) Insider: Blank Jeremy (Director) Shares: 49,283

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-06

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

Bergman Laurie (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	24,641	—	—

Filing: Form 4 (Insider Transaction) Insider: Bergman Laurie (Director) Shares: 24,641

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-06

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

McIntyre Julian Alexander (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	49,283	—	—

Filing: Form 4 (Insider Transaction) Insider: McIntyre Julian Alexander (Director) Shares: 49,283

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-06

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

Campbell-Breeden Richard (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	49,283	—	—

Filing: Form 4 (Insider Transaction) Insider: Campbell-Breeden Richard (Director) Shares: 49,283

View on SEC EDGAR → Open Filing Document →

Material Events 5 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 5 in this period for Arq, 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 2026-08-28

ARQ filed 8-K — material company event

Arq, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-08-10

ARQ filed 8-K — material company event

Arq, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-23

ARQ filed 8-K — material company event

Arq, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-02

ARQ filed 8-K — material company event

Arq, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-06-18

ARQ filed 8-K — material company event

Arq, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for Arq, Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-10

ARQ filed Quarterly Report (10-Q)

Arq, Inc. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

How we classify Arq, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on ARQ. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — ARQ SEC Filings

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ARQ Full Analysis

Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

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