As of November 6, 2026, Arq, Inc. is a publicly traded company (Nasdaq: ARQ); its largest reported holder is Daniel Kaufman, with 5.12% on Schedule 13G of March 12, 2026. The largest insider holding is McIntyre Julian Alexander, a director, with 3,299,550 shares (7.5% of shares outstanding), per Form 4 of July 6, 2026. No bankruptcy or receivership appears in its SEC Form 8-K filings (Schedule 13G, March 12, 2026).
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Is Arq, Inc. a real, registered company?
- Arq, Inc. files with the SEC under CIK 1515156 (its SEC filings).
- Its shares are listed under the ticker ARQ on Nasdaq (SEC company record).
- business address in Greenwood Village, Colorado, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Arq, Inc. in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Peter Owino, Chief Accounting Officer (Form 8-K filed 2026-08-28). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Daniel Kaufman (filed 2026-03-12).
Who are Arq, Inc.'s owners and officers?
Arq, Inc.: business address in Greenwood Village, Colorado; industry Miscellaneous Chemical Products (Form D, 2026-08-28).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-04-27 | Orin Hirschman | 0% |
| Schedule 13G, 2026-03-12 | Daniel Kaufman | 5.12% |
| Schedule 13G/A, 2026-01-28 | Orin Hirschman | 5.8% |
Questions about who owns Arq, Inc.
Who owns Arq, Inc.?
On this page, one holder's latest ownership filing reports 5% or more of Arq, Inc.: Daniel Kaufman (5.12%, Schedule 13G, filed 2026-03-12).
When did Daniel Kaufman buy into Arq, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Daniel Kaufman on this page is the Schedule 13G, filed 2026-03-12, reporting 5.12%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 3 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What They Do, And How The Money Works
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Who Pays Them, And Who They Are Up Against
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-08-28 | Peter Owino | Chief Accounting Officer | appointed | 2026-09-01 |
| Form 8-K, 2026-06-18 | Peter Owino | Chief Accounting Officer | appointed | 2026-06-12 |
| Form 8-K, 2026-06-18 | Peter Owino | appointed | ||
| Form 8-K, 2026-05-27 | Shimon Steinmetz | Chief Financial Officer | appointed | |
| Form 8-K, 2026-05-27 | Shimon Steinmetz | appointed |
Which insiders own Arq, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a director: 3,299,550 shares (7.5% of shares outstanding), 108,261 held directly and 3,191,289 indirectly (Form 4, 2026-07-06).
- , a director: 2,537,850 shares (5.7% of shares outstanding), 128,045 held directly and 2,409,805 indirectly (Form 4, 2026-07-06).
- , the chief executive and a director: 1,078,434 shares (2.4% of shares outstanding), 479,937 held directly and 598,497 indirectly (Form 4, 2026-03-25).
- , a director: 540,937 shares (1.2% of shares outstanding), 136,151 held directly and 404,786 indirectly (Form 4, 2026-07-06).
- , the chief technology officer: 506,648 shares (1.1% of shares outstanding) (Form 4, 2026-08-18).
Shares outstanding: 44,189,360 as of 2026-11-02, from the company's latest SEC cover page.
How much has Arq, Inc. raised?
No fundraising or offering filing from Arq, Inc. is on file with us.
Keep reading
More on Arq, Inc. and the records around it.
Arq, Inc. elsewhere on the record
- Leadership changes Aug 2026
Companies that share a holder
- Daniel Kaufman also filed stake reports on 6 other companies: AUNA S.A. (May 2026), ABEONA THERAPEUTICS INC. (Mar 2026), DELCATH SYSTEMS, INC. (Mar 2026)
- Orin Hirschman also filed stake reports on 46 other companies: ASPEN AEROGELS, INC. (Oct 2026), Bionano Genomics, Inc. (Oct 2026), FENNEC PHARMACEUTICALS INC. (Oct 2026)
Related pages
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https://mentionfox.com/who-owns/arq