Latest 10-Q

What changed in Arq, 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 Arq, 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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Lobbying and contracts

$150.0K · — in 12 mo

What Arq, Inc. reported spending on lobbying next to the federal contracts it was awarded, by year.Lobbying: each report counts once. If a report was amended, only the newest version counts. Totals use the company's own report when it files one (it includes payments to hired firms); otherwise the hired firms' reported income. Registrations and reports with no amount are not counted. A firm that hands part of its work to another firm may report the same money as that other firm does; the filings do not allow us to tell. Contracts: each award is counted once, for the company that received it (or its listed parent when only the parent is matched), in the year of its first obligation. The amount is the total obligated to date, so a later increase is counted in the year the award began. Only awards of $1 million or more are collected. Agencies: the offices named on lobbying reports and the awarding agencies of contracts are matched to one department name (the Army, Navy and Air Force count as the Department of Defense; NIH, FDA and CMS as Health and Human Services). An agency is listed under both when the company lobbied it and was awarded a contract by it in the same period. Offices outside this list, and Congress, are not counted as agencies.

$0$50.0K$100.0K$150.0K2025 · Lobbying: $140,0002025 · Federal contracts: $020252026 YTD · Lobbying: $120,0002026 YTD · Federal contracts: $02026 YTD

Lobbying Federal contractsBoth bars use one dollar scale.

Lobbying and federal contracts of Arq, Inc. by year
Gifts by the company's PAC to candidates for Congress. They come from donations to the PAC, not from the company's own funds.
2026 (year to date)$120.0K3Budget and appropriations, Trade——————
2025$140.0K4Budget and appropriations, TradeEnergy—————

Agencies both lobbied and awarding contracts

No agency appears on both sides in the last 12 months.

Lobbying and contract awards are reported separately; showing them together does not mean one caused the other.

All companies · Contract awards · Lobbying reports

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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$3.18+$0.09 (+2.91%) Nov 13 close
Oct 13, 2026: $1.97Oct 14, 2026: $1.93Oct 15, 2026: $1.86Oct 16, 2026: $1.79Oct 19, 2026: $1.78Oct 20, 2026: $1.86Oct 21, 2026: $1.84Oct 22, 2026: $1.77Oct 23, 2026: $1.75Oct 26, 2026: $1.74Oct 27, 2026: $1.78Oct 28, 2026: $1.85Oct 29, 2026: $1.77Oct 30, 2026: $1.77Nov 2, 2026: $1.81Nov 3, 2026: $1.84Nov 4, 2026: $1.85Nov 5, 2026: $2.40Nov 6, 2026: $2.53Nov 9, 2026: $2.86Nov 10, 2026: $2.95Nov 11, 2026: $3.12Nov 12, 2026: $3.09Nov 13, 2026: $3.18
Oct 13, 2026Low $1.74 · High $3.18Nov 13, 2026
Aug 13, 2026: $2.28Aug 14, 2026: $2.34Aug 17, 2026: $2.31Aug 18, 2026: $2.22Aug 19, 2026: $2.17Aug 20, 2026: $2.26Aug 21, 2026: $2.30Aug 24, 2026: $2.21Aug 25, 2026: $2.17Aug 26, 2026: $2.15Aug 27, 2026: $2.20Aug 28, 2026: $2.16Aug 31, 2026: $2.12Sep 1, 2026: $2.05Sep 2, 2026: $2.20Sep 3, 2026: $2.27Sep 4, 2026: $2.30Sep 8, 2026: $2.21Sep 9, 2026: $2.18Sep 10, 2026: $2.23Sep 11, 2026: $2.20Sep 14, 2026: $2.14Sep 15, 2026: $2.07Sep 16, 2026: $2.11Sep 17, 2026: $2.06Sep 18, 2026: $2.05Sep 21, 2026: $2.02Sep 22, 2026: $2.07Sep 23, 2026: $2.04Sep 24, 2026: $2.01Sep 25, 2026: $2.02Sep 28, 2026: $1.93Sep 29, 2026: $1.91Sep 30, 2026: $1.98Oct 1, 2026: $1.89Oct 2, 2026: $1.94Oct 5, 2026: $2.02Oct 6, 2026: $2.05Oct 7, 2026: $2.05Oct 8, 2026: $2.11Oct 9, 2026: $2.03Oct 12, 2026: $1.96Oct 13, 2026: $1.97Oct 14, 2026: $1.93Oct 15, 2026: $1.86Oct 16, 2026: $1.79Oct 19, 2026: $1.78Oct 20, 2026: $1.86Oct 21, 2026: $1.84Oct 22, 2026: $1.77Oct 23, 2026: $1.75Oct 26, 2026: $1.74Oct 27, 2026: $1.78Oct 28, 2026: $1.85Oct 29, 2026: $1.77Oct 30, 2026: $1.77Nov 2, 2026: $1.81Nov 3, 2026: $1.84Nov 4, 2026: $1.85Nov 5, 2026: $2.40Nov 6, 2026: $2.53Nov 9, 2026: $2.86Nov 10, 2026: $2.95Nov 11, 2026: $3.12Nov 12, 2026: $3.09Nov 13, 2026: $3.18
Aug 13, 2026Low $1.74 · High $3.18Nov 13, 2026
Nov 13, 2025: $3.57Nov 14, 2025: $3.53Nov 17, 2025: $3.51Nov 18, 2025: $3.51Nov 19, 2025: $3.50Nov 20, 2025: $3.30Nov 21, 2025: $3.50Nov 24, 2025: $3.51Nov 25, 2025: $3.61Nov 26, 2025: $3.69Nov 28, 2025: $3.72Dec 1, 2025: $3.68Dec 2, 2025: $3.82Dec 3, 2025: $3.91Dec 4, 2025: $3.84Dec 5, 2025: $3.77Dec 8, 2025: $3.68Dec 9, 2025: $3.66Dec 10, 2025: $3.66Dec 11, 2025: $3.60Dec 12, 2025: $3.35Dec 15, 2025: $3.30Dec 16, 2025: $3.29Dec 17, 2025: $3.22Dec 18, 2025: $3.31Dec 19, 2025: $3.20Dec 22, 2025: $3.24Dec 23, 2025: $3.28Dec 24, 2025: $3.41Dec 26, 2025: $3.41Dec 29, 2025: $3.30Dec 30, 2025: $3.23Dec 31, 2025: $3.27Jan 2, 2026: $3.33Jan 5, 2026: $3.54Jan 6, 2026: $3.54Jan 7, 2026: $3.56Jan 8, 2026: $3.66Jan 9, 2026: $3.60Jan 12, 2026: $3.82Jan 13, 2026: $3.66Jan 14, 2026: $3.62Jan 15, 2026: $3.63Jan 16, 2026: $3.63Jan 20, 2026: $3.55Jan 21, 2026: $3.67Jan 22, 2026: $3.73Jan 23, 2026: $3.79Jan 26, 2026: $3.81Jan 27, 2026: $3.79Jan 28, 2026: $3.74Jan 29, 2026: $3.65Jan 30, 2026: $3.56Feb 2, 2026: $3.61Feb 3, 2026: $3.54Feb 4, 2026: $3.75Feb 5, 2026: $3.53Feb 6, 2026: $3.52Feb 9, 2026: $3.76Feb 10, 2026: $3.85Feb 11, 2026: $3.80Feb 12, 2026: $3.62Feb 13, 2026: $3.59Feb 17, 2026: $3.41Feb 18, 2026: $3.46Feb 19, 2026: $3.53Feb 20, 2026: $3.46Feb 23, 2026: $3.36Feb 24, 2026: $3.41Feb 25, 2026: $3.57Feb 26, 2026: $3.62Feb 27, 2026: $3.51Mar 2, 2026: $3.50Mar 3, 2026: $3.48Mar 4, 2026: $3.50Mar 5, 2026: $3.40Mar 6, 2026: $3.21Mar 9, 2026: $3.20Mar 10, 2026: $1.64Mar 11, 2026: $1.78Mar 12, 2026: $2.04Mar 13, 2026: $1.92Mar 16, 2026: $1.88Mar 17, 2026: $1.89Mar 18, 2026: $1.90Mar 19, 2026: $2.07Mar 20, 2026: $1.99Mar 23, 2026: $2.27Mar 24, 2026: $2.33Mar 25, 2026: $2.50Mar 26, 2026: $2.50Mar 27, 2026: $2.54Mar 30, 2026: $2.49Mar 31, 2026: $2.56Apr 1, 2026: $2.36Apr 2, 2026: $2.47Apr 6, 2026: $2.47Apr 7, 2026: $2.39Apr 8, 2026: $2.29Apr 9, 2026: $2.12Apr 10, 2026: $2.17Apr 13, 2026: $2.12Apr 14, 2026: $2.24Apr 15, 2026: $2.36Apr 16, 2026: $2.27Apr 17, 2026: $2.23Apr 20, 2026: $2.24Apr 21, 2026: $2.22Apr 22, 2026: $2.23Apr 23, 2026: $2.30Apr 24, 2026: $2.29Apr 27, 2026: $2.28Apr 28, 2026: $2.27Apr 29, 2026: $2.23Apr 30, 2026: $2.27May 1, 2026: $2.29May 4, 2026: $2.45May 5, 2026: $2.37May 6, 2026: $2.31May 7, 2026: $2.59May 8, 2026: $2.64May 11, 2026: $2.73May 12, 2026: $2.71May 13, 2026: $2.55May 14, 2026: $2.63May 15, 2026: $2.62May 18, 2026: $2.58May 19, 2026: $2.54May 20, 2026: $2.53May 21, 2026: $2.48May 22, 2026: $2.46May 26, 2026: $2.49May 27, 2026: $2.68May 28, 2026: $2.75May 29, 2026: $2.76Jun 1, 2026: $2.79Jun 2, 2026: $2.73Jun 3, 2026: $2.60Jun 4, 2026: $2.66Jun 5, 2026: $2.60Jun 8, 2026: $2.65Jun 9, 2026: $2.69Jun 10, 2026: $2.67Jun 11, 2026: $2.66Jun 12, 2026: $2.68Jun 15, 2026: $2.72Jun 16, 2026: $2.77Jun 17, 2026: $2.73Jun 18, 2026: $2.84Jun 22, 2026: $2.58Jun 23, 2026: $2.46Jun 24, 2026: $2.35Jun 25, 2026: $2.28Jun 26, 2026: $2.34Jun 29, 2026: $2.50Jun 30, 2026: $2.55Jul 1, 2026: $2.35Jul 2, 2026: $2.27Jul 6, 2026: $2.22Jul 7, 2026: $2.21Jul 8, 2026: $2.21Jul 9, 2026: $2.25Jul 10, 2026: $2.32Jul 13, 2026: $2.22Jul 14, 2026: $2.22Jul 15, 2026: $2.20Jul 16, 2026: $2.18Jul 17, 2026: $2.06Jul 20, 2026: $2.09Jul 21, 2026: $2.07Jul 22, 2026: $2.08Jul 23, 2026: $2.04Jul 24, 2026: $2.03Jul 27, 2026: $1.99Jul 28, 2026: $1.95Jul 29, 2026: $1.94Jul 30, 2026: $2.06Jul 31, 2026: $1.97Aug 3, 2026: $2.01Aug 4, 2026: $2.07Aug 5, 2026: $2.05Aug 6, 2026: $2.11Aug 7, 2026: $2.08Aug 10, 2026: $2.07Aug 11, 2026: $2.27Aug 12, 2026: $2.30Aug 13, 2026: $2.28Aug 14, 2026: $2.34Aug 17, 2026: $2.31Aug 18, 2026: $2.22Aug 19, 2026: $2.17Aug 20, 2026: $2.26Aug 21, 2026: $2.30Aug 24, 2026: $2.21Aug 25, 2026: $2.17Aug 26, 2026: $2.15Aug 27, 2026: $2.20Aug 28, 2026: $2.16Aug 31, 2026: $2.12Sep 1, 2026: $2.05Sep 2, 2026: $2.20Sep 3, 2026: $2.27Sep 4, 2026: $2.30Sep 8, 2026: $2.21Sep 9, 2026: $2.18Sep 10, 2026: $2.23Sep 11, 2026: $2.20Sep 14, 2026: $2.14Sep 15, 2026: $2.07Sep 16, 2026: $2.11Sep 17, 2026: $2.06Sep 18, 2026: $2.05Sep 21, 2026: $2.02Sep 22, 2026: $2.07Sep 23, 2026: $2.04Sep 24, 2026: $2.01Sep 25, 2026: $2.02Sep 28, 2026: $1.93Sep 29, 2026: $1.91Sep 30, 2026: $1.98Oct 1, 2026: $1.89Oct 2, 2026: $1.94Oct 5, 2026: $2.02Oct 6, 2026: $2.05Oct 7, 2026: $2.05Oct 8, 2026: $2.11Oct 9, 2026: $2.03Oct 12, 2026: $1.96Oct 13, 2026: $1.97Oct 14, 2026: $1.93Oct 15, 2026: $1.86Oct 16, 2026: $1.79Oct 19, 2026: $1.78Oct 20, 2026: $1.86Oct 21, 2026: $1.84Oct 22, 2026: $1.77Oct 23, 2026: $1.75Oct 26, 2026: $1.74Oct 27, 2026: $1.78Oct 28, 2026: $1.85Oct 29, 2026: $1.77Oct 30, 2026: $1.77Nov 2, 2026: $1.81Nov 3, 2026: $1.84Nov 4, 2026: $1.85Nov 5, 2026: $2.40Nov 6, 2026: $2.53Nov 9, 2026: $2.86Nov 10, 2026: $2.95Nov 11, 2026: $3.12Nov 12, 2026: $3.09Nov 13, 2026: $3.18
Nov 13, 2025Low $1.64 · High $3.91Nov 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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