# EDGAR Filing Document

**Accession Number:** 0001515156
**File Stem:** 0001515156-26-000082
**Filing Date:** 2026-6
**Character Count:** 79538
**Document Hash:** 41e0cfdb544f95ff37329cf2332d6872
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001515156-26-000082.hdr.sgml**: 20260626

**ACCESSION NUMBER**: 0001515156-26-000082

**CONFORMED SUBMISSION TYPE**: S-8

**PUBLIC DOCUMENT COUNT**: 16

**FILED AS OF DATE**: 20260626

**DATE AS OF CHANGE**: 20260626

**EFFECTIVENESS DATE**: 20260626

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Arq, Inc.
- **CENTRAL INDEX KEY:** 0001515156
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS CHEMICAL PRODUCTS [2890]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 275472457
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-8
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-297071
- **FILM NUMBER:** 261129885

**BUSINESS ADDRESS:**
- **STREET 1:** 8051 E. MAPLEWOOD AVE., STE 210
- **CITY:** GREENWOOD VILLAGE
- **STATE:** CO
- **ZIP:** 80111
- **BUSINESS PHONE:** 720-598-3500

**MAIL ADDRESS:**
- **STREET 1:** 8051 E. MAPLEWOOD AVE., STE 210
- **CITY:** GREENWOOD VILLAGE
- **STATE:** CO
- **ZIP:** 80111

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Advanced Emissions Solutions, Inc.
- **DATE OF NAME CHANGE:** 20110311

**As filed with the Securities and Exchange Commission on June 26, 2026** 

**Registration No. 333-__________**

    

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

Washington, D.C. 20549

______________________________________

**FORM S-8**

**REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933**

______________________________________

**ARQ, INC.**

(Exact name of registrant as specified in its charter)

______________________________________

---

| | |
|:---|:---|
| **Delaware** | **27-5472457** |
| ***(State or other jurisdiction of incorporation or organization)*** | ***(I.R.S. Employer Identification No.)*** |
| **8051 E. Maplewood Ave., Suite 210<br>Greenwood Village, CO** | **80111** |
| ***(Address of Principal Executive Office)*** | ***(Zip Code)*** |

---

______________________________________

**Arq, Inc. 2026 Omnibus Incentive Plan**

**Restricted Stock Inducement Awards**

**Performance Share Unit Inducement Awards** <br> (Full titles of the plans)

**Robert Rasmus**

**Chief Executive Officer**

**8051 E. Maplewood Ave., Suite 210**

**Greenwood Village, CO 80111**

**(720) 598-3500**

(Name, address, telephone number, including area code, and zip code of agent for service)

***Copies to:***

---

| | |
|:---|:---|
| **Clay Smith** | **Jeffrey A. Sherman** |
| **General Counsel and Secretary** | **Faegre Drinker Biddle & Reath LLP** |
| **8051 E. Maplewood Ave., Suite 210** | **1144 15th Street, Suite 3400** |
| **Greenwood Village, CO 80111** | **Denver, CO 80202** |
| **(720) 598-3500** | **(303) 607-3500** |

---

______________________________________

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

---

| | | | |
|:---|:---|:---|:---|
| Large accelerated filer | □ | Accelerated filer | ⌧ |
| Non-accelerated filer | □ | Smaller reporting company | ⌧ |
| | | Emerging growth company | ◻ |

---

------

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. □

______________________________________

------

**EXPLANATORY NOTE**

Arq, Inc. (the "Registrant") is filing this Registration Statement on Form S-8 (the "Registration Statement") with the Securities and Exchange Commission (the "SEC") to register an aggregate of 2,981,264 shares of the Registrant's common stock, par value $0.001 per share ("Common Stock"), consisting of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) 1,500,000 shares of Common Stock newly reserved for issuance under the Arq, Inc. 2026 Omnibus Incentive Plan (the "2026 Plan") and 1,081,264 shares of Common Stock that either remained issuable under or were previously issued pursuant to the Arq, Inc. 2024 Omnibus Incentive Plan, which were subsequently recycled for future issuance and are available under the 2026 Plan; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) 250,000 shares of Common Stock underlying certain restricted stock inducement awards (the "Inducement RSAs") and 150,000 shares of Common Stock underlying certain performance share unit inducement awards (the "Inducement PSUs" and, together with the Inducement RSAs, the "Inducement Awards") to be granted to Shimon Steinmetz, the Registrant's incoming Chief Financial Officer, on or around July 27, 2026, the effective date of Mr. Steinmetz's appointment.

The Inducement Awards were approved by the Compensation Committee of the Registrant's Board of Directors as an inducement material to Mr. Steinmetz's acceptance of employment with the Registrant in compliance with and in reliance on Nasdaq Listing Rule 5635(c)(4). The Inducement Awards will be issued outside of the 2026 Plan.

**PART I**

 **INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS**

The information called for by Part I of Form S-8 is omitted from this Registration Statement in accordance with Rule 428 of the Securities Act of 1933, as amended (the "Securities Act"), and the instructions to Form S-8. In accordance with the rules and regulations of the SEC and the instructions to Form S-8, such documents are not being filed with the SEC either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant to Rule 424.

**PART II**

**INFORMATION REQUIRED IN THE REGISTRATION STATEMENT**

**Item 3.&nbsp;&nbsp;&nbsp;&nbsp;Incorporation of Documents by Reference.**

The Registrant hereby incorporates by reference into this Registration Statement the following documents filed by it with the Commission:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)the Registrant's <u>[Annual Report on Form 10-K](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000021/arq-20251231.htm)</u>for the year ended December 31, 2025, as filed with the SEC on March 10, 2026, including the information specifically incorporated by reference into our Annual Report on Form 10-K from our <u>[D](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000052/ades-20260428.htm)[efinitive](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000052/ades-20260428.htm)[P](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000052/ades-20260428.htm)[roxy](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000052/ades-20260428.htm)[S](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000052/ades-20260428.htm)[tatement on Schedule 14A](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000052/ades-20260428.htm)</u>, filed with the SEC on April 28, 2026;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)the Registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, as filed with the SEC on <u>[May](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000062/ades-20260331.htm)[6](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000062/ades-20260331.htm)[, 202](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000062/ades-20260331.htm)[6](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000062/ades-20260331.htm)</u>;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)the Registrant's Current Reports on Form 8-K filed with the SEC on <u>[January 2](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000002/ades-20260128.htm)[9](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000002/ades-20260128.htm)[, 202](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000002/ades-20260128.htm)[6](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000002/ades-20260128.htm)</u>, <u>[March 3, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000008/ades-20260227.htm)</u>, <u>[April 1, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000041/arq-20260331.htm)</u>, <u>[April 1](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000045/ades-20260415.htm)[7](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000045/ades-20260415.htm)[, 202](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000045/ades-20260415.htm)[6](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000045/ades-20260415.htm)</u>, <u>[May 1](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000057/ades-20260429.htm)[, 202](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000057/ades-20260429.htm)[6](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000057/ades-20260429.htm)</u>, <u>[May 27](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000069/ades-20260520.htm)[, 202](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000069/ades-20260520.htm)[6](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000069/ades-20260520.htm)</u>, <u>[June 11, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000073/ades-20260610.htm)</u>, and <u>[June 18, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1515156/000151515626000075/ades-20260614.htm)</u>;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4)the description of the Registrant's Common Stock contained or incorporated by reference in the Registrant's Registration Statement on Form 8-A filed with the SEC on <u>[July 6, 2016](https://www.sec.gov/Archives/edgar/data/1515156/000151515616000134/a8-anasdaq.htm)</u>, as updated by <u>[Exhibit 4.1](https://www.sec.gov/Archives/edgar/data/1515156/000151515624000036/exhibit410descriptionofreg.htm)[0](https://www.sec.gov/Archives/edgar/data/1515156/000151515624000036/exhibit410descriptionofreg.htm)</u> to the Registrant's Annual Report on Form 10-K for the fiscal year ended December 31, 2023, and including any further amendments or reports filed for the purpose of updating such description; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5)the description of the Registrant's Series B Junior Participating Preferred Stock (currently traded with our Common Stock) contained or incorporated by reference in the Registrant's Registration Statement on Form

------

8-A filed on <u>[May 8, 2017](https://www.sec.gov/Archives/edgar/data/1515156/000151515617000039/a8ashareholderrights.htm)</u>, as most recently amended by the Registrant's Registration Statement on Form 8-A filed on <u>[April 1](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000047/a8aashareholderrightsninth.htm)[7](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000047/a8aashareholderrightsninth.htm)[, 202](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000047/a8aashareholderrightsninth.htm)[6](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000047/a8aashareholderrightsninth.htm)</u>, as updated by any amendments or reports filed for the purpose of updating such description.

In addition, the Registrant incorporates by reference all documents filed by it pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 (other than, in each case, documents or information deemed to have been furnished and not filed in accordance with SEC rules, unless specifically incorporated by reference into this Registration Statement) subsequent to the date hereof and prior to the filing of a post-effective amendment which indicates that all securities offered have been sold or which deregisters all securities then remaining unsold. All such incorporated documents shall be deemed to be a part of this Registration Statement from the date of filing of such documents.

Any statement contained in a document incorporated or deemed to be incorporated by reference into this Registration Statement shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained in this Registration Statement or in any other subsequently filed document which also is or is deemed to be incorporated into this Registration Statement modifies or supersedes that statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

**Item 4.&nbsp;&nbsp;&nbsp;&nbsp;Description of Securities.**

&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.

**Item 5.&nbsp;&nbsp;&nbsp;&nbsp;Interests of Named Experts and Counsel.**

&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.

**Item 6.&nbsp;&nbsp;&nbsp;&nbsp;Indemnification of Directors and Officers.&nbsp;&nbsp;&nbsp;&nbsp;**

Section 145 of the Delaware General Corporation Law (the "DGCL") provides in part that a corporation shall have the power to indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding (other than an action by or in the right of the corporation) by reason of the fact that such person is or was a director, officer, employee or agent of the corporation, or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation or other enterprise, against expenses (including attorneys' fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by him in connection with such action, suit or proceeding if he acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the corporation, and with respect to any criminal action or proceeding, had no reasonable cause to believe his conduct was unlawful. Similar indemnity is authorized for such persons against expenses (including attorneys' fees) actually and reasonably incurred in defense or settlement of any threatened, pending or completed action or suit by or in the right of the corporation, if such person acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the corporation, and provided further (unless a court of competent jurisdiction otherwise provides) such person shall not have been adjudged liable to the corporation. Any such indemnification may be made only as authorized in each specific case upon a determination by the stockholders or disinterested directors that indemnification is proper because the indemnitee has met the applicable standard of conduct.

Section 102 of the DGCL allows a corporation to eliminate or limit the personal liability of directors and officers of a corporation to the corporation or its stockholders for monetary damages for a breach of fiduciary duty as a director or officer, except where the director or officer breached his or her duty of loyalty, failed to act in good faith, engaged in intentional misconduct or knowingly violated a law, or obtained an improper personal benefit, or where a director authorized the payment of a dividend or approved a stock repurchase in violation of Delaware law. Section 102 of the DGCL does not permit a corporation to eliminate or limit the personal liability of an officer in any action by or in the right of the corporation.

Additionally, the Registrant's Second Amended and Restated Certificate of Incorporation and Amended and Restated Bylaws provide for the elimination of liability for monetary damages for breach of the directors' fiduciary duty of care to the Registrant and its stockholders. These provisions do not eliminate the directors' duty of care and, in appropriate circumstances, equitable remedies such as injunctive or other forms of non-monetary relief

------

will remain available under Delaware law. In addition, each director will continue to be subject to liability for breach of the director's duty of loyalty, for acts or omissions not in good faith or involving intentional misconduct, for knowing violations of law, for any transaction from which the director derived an improper personal benefit, and for payments of dividends or approval of stock repurchases or redemptions that are unlawful under Delaware law. The provisions do not affect a director's responsibilities under any other laws, such as the federal securities laws or state or federal environmental laws.

As permitted by Section 145 of the DGCL, the Registrant's Second Amended and Restated Certificate of Incorporation requires the Registrant to indemnify, advance expenses, and hold harmless, to the fullest extent permitted by applicable law as it presently exists or may hereafter be amended, any person who was or is made or is threatened to be made a party or is otherwise involved in any action, suit or proceeding, whether civil, criminal, administrative or investigative, by reason of the fact that he or she, or a person for whom he or she is the legal representative, is or was a director or officer of the Registrant or, while a director or officer of the Registrant, is or was serving at the request of the Registrant as a director, officer, employee or agent of another corporation, or of a partnership, joint venture, trust, enterprise, or nonprofit entity, including service with respect to employee benefit plans, against all liability and loss suffered and expenses (including attorneys' fees) reasonably incurred by such person.

Article VII of the Registrant's Amended and Restated Bylaws provides that the Registrant shall indemnify its directors and officers to the fullest extent not prohibited by Delaware law.

The Registrant also maintains directors' and officers' liability insurance.

**Item 7. Exemption from Registration Claimed.**

&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.

**Item 8. Exhibits**

---

| | |
|:---|:---|
| **<u>Exhibit Number</u>** | **<u>Description</u>** |
| 4.1 | <u>[Second Amended and Restated Certificate of Incorporation of Advanced Emissions Solutions, Inc. (incorporated by reference to Exhibit 3.1 of the Registrant's Quarterly Report on Form 10-Q filed with the SEC on August 9, 2013).](https://www.sec.gov/Archives/edgar/data/1515156/000156459013000293/ades-ex3i_2013062942.htm)</u> |
| 4.2 | <u>[Certificate of Amendment to the Amended and Restated Certificate of Incorporation, effective February 1, 2024 (incorporated by reference from Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed with the SEC on January 31, 2024).](https://www.sec.gov/Archives/edgar/data/1515156/000151515624000024/ex31certificateofamendment.htm)</u> |
| 4.3 | <u>[Certificate of Designation of Series A Preferred Stock (incorporated by reference from Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed on February 1, 2023).](https://www.sec.gov/Archives/edgar/data/1515156/000151515623000003/ex31certificateofdesignati.htm)</u> |
| 4.4 | <u>[Certificate of Designation, Preferences, and Rights of Series B Junior Participating Preferred Stock of Advanced Emissions Solutions, Inc. (incorporated by reference from Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed on May 8, 2017).](https://www.sec.gov/Archives/edgar/data/1515156/000151515617000038/ex31adescertificateofdesig.htm)</u> |
| 4.5 | <u>[Amended and Restated Bylaws of Arq, Inc., as amended (incorporated by reference from Exhibit 3.1 to the Registrant's Quarterly Report on Form 10-Q filed with the SEC on May 8, 2024).](https://www.sec.gov/Archives/edgar/data/1515156/000151515624000095/exhibit31amendedandrestate.htm)</u> |
| 4.6 | <u>[Arq, Inc. 2024 Omnibus Incentive Plan (incorporated by reference from Exhibit 10.1 to the](https://www.sec.gov/Archives/edgar/data/1515156/000151515624000109/exhibit101-arqinc2024omnib.htm)[Registrant](https://www.sec.gov/Archives/edgar/data/1515156/000151515624000109/exhibit101-arqinc2024omnib.htm)['s Current Report on Form 8-K filed on June 13, 2024).](https://www.sec.gov/Archives/edgar/data/1515156/000151515624000109/exhibit101-arqinc2024omnib.htm)</u> |
| 4.7 | <u>[Arq, Inc. 2026 Omnibus Incentive Plan (](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[incorporated by reference from Exhibit](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[1](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[0](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[.](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[1](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[to the](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[Registrant's Current Report on Form 8-K filed on](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[June](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[11](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[, 2026](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[)](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)[.](https://www.sec.gov/Archives/edgar/data/1515156/000151515626000073/ex101arqinc2026omnibusince.htm)</u> |
| 10.1\* | <u>[Form of Arq, Inc. Inducement Restricted Stock Award Agreement.](exhibit101-formofrsainduce.htm)</u> |
| 10.2\* | <u>[Form of Arq, Inc. Inducement Performance Stock Unit Agreement.](exhibit102-formofpsuinduce.htm)</u> |
| 5.1\* | <u>[Opinion of Faegre Drinker Biddle & Reath LLP.](exhibit51-opinionoffaegred.htm)</u> |
| 23.1\* | <u>[Consent of Baker Tilly US, LLP.](exhibit231-bakertillyllpco.htm)</u> |
| 23.2\* | <u>[Consent of Faegre Drinker Biddle & Reath LLP (included in Exhibit 5.1).](exhibit51-opinionoffaegred.htm)</u> |
| 24.1\* | <u>[Power of Attorney (included on signature page hereto).](#i1821006d662148b893b6f1cbe84abd7a_37)</u> |
| 107.1\* | <u>[Filing Fee Table.](exfilingfees.htm)</u> |

---

\*&nbsp;&nbsp;&nbsp;&nbsp;Filed herewith.

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**Item 9.&nbsp;&nbsp;&nbsp;&nbsp;Undertakings.**

(a)&nbsp;&nbsp;&nbsp;&nbsp;The undersigned registrant hereby undertakes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective Registration Statement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement;

*provided, however,* that paragraphs (a)(1)(i) and (a)(1)(ii) of this section do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or 15(d) of the Exchange Act that are incorporated by reference in the Registration Statement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new Registration Statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(b) The undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or 15(d) of the Securities Exchange Act (and, where applicable, each filing of an employee benefit plan's annual report pursuant to section 15(d) of the Securities Exchange Act) that is incorporated by reference in the Registration Statement shall be deemed to be a new Registration Statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(h) Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

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**SIGNATURES**

Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Greenwood Village, Colorado, on June 26, 2026.

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| | |
|:---|:---|
| | **ARQ, INC.** |
| By: | /s/ Robert Rasmus |
| Name: | Robert Rasmus |
| Title: | Chief Executive Officer |

---

------

**POWER OF ATTORNEY**

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert Rasmus and Clay Smith, and each of them, as the true and lawful attorney-in-fact and agent with full power of substitution and resubstitution, for them and in their name, place and stead, in any and all capacities to sign any and all amendments to this Registration Statement (including post-effective amendments, or any abbreviated registration statement and any amendments thereto filed pursuant to Rule 462(b) and otherwise), and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission granting unto said attorney-in-fact and agent the full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the foregoing, as to all intents and purposes as either of them might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, as amended, the following persons have signed this Registration Statement in the capacities and on the date indicated.

---

| | | |
|:---|:---|:---|
| **Name** | **Title** | **Date** |
| /s/ Robert Rasmus | Chief Executive Officer, Director | June 26, 2026 |
| Robert Rasmus | *(Principal Executive Officer and Principal Financial Officer)* |  |
| /s/ Peter Owino | Interim Chief Accounting Officer | June 26, 2026 |
| Peter Owino | *(Principal Accounting Officer)* |  |
| /s/ Jeremy Blank | Director | June 26, 2026 |
| Jeremy Blank |  |  |
| /s/ Laurie Bergman | Director | June 26, 2026 |
| Laurie Bergman |  |  |
| /s/ Richard Campbell-Breeden | Director | June 26, 2026 |
| Richard Campbell-Breeden |  |  |
| /s/ Carol Eicher | Director | June 26, 2026 |
| Carol Eicher |  |  |
| /s/ Julian McIntyre | Director | June 26, 2026 |
| Julian McIntyre |  |  |

---

## Ex-Filing

?xml version='1.0' encoding='ASCII'? exfilingfees

**Calculation of Filing Fee Tables**

**S-8**

**ARQ, INC.**

**Table 1: Newly Registered Securities**

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Note #** | **Security Type** | **Security Class Title** | **Fee Calculation Rule** | **Amount Registered** | **Proposed Maximum Offering Price Per Unit** | **Maximum Aggregate Offering Price** | **Fee Rate** | **Amount of Registration Fee** |
| 1 | Equity | Common stock, par value $0.001 per share | Other | 2581264 | $2.40 | $6195033.60 | 0.0001381 | $855.53 |
| 2 | Equity | Common stock, par value $0.001 per share | Other | 400000 | $2.40 | $960000.00 | 0.0001381 | $132.58 |
|  | **Total Offering Amounts** | **Total Offering Amounts** | **Total Offering Amounts** | **Total Offering Amounts** | **Total Offering Amounts** | $7155033.60 |  | $988.11 |
|  | **Total Fee Offsets** | **Total Fee Offsets** | **Total Fee Offsets** | **Total Fee Offsets** | **Total Fee Offsets** |  |  |  |
|  | **Net Fee Due** | **Net Fee Due** | **Net Fee Due** | **Net Fee Due** | **Net Fee Due** |  |  | $988.11 |

---

---

| | |
|:---|:---|
| **Offering Note:** | |
| 1 | Represents 2,581,264 shares of common stock, par value $0.001 per share (the "Common Stock") of Arq, Inc. (the "Registrant") that are reserved for issuance under the Arq, Inc. 2026 Omnibus Incentive Plan (the "2026 Plan"), including (a) 1,500,000 shares of Common Stock that were authorized for issuance under the 2026 Plan pursuant to stockholder approval obtained at the Registrant's 2026 Annual Meeting of Stockholders held on June 10, 2026, and (b) 1,081,264 shares of Common Stock that either remained issuable under or were previously issued pursuant to the Arq, Inc. 2024 Omnibus Incentive Plan, which were subsequently recycled for future issuance and are available under the 2026 Plan. Pursuant to Rule 416 of the Securities Act of 1933, as amended (the "Securities Act"), this Registration Statement on Form S-8 also includes additional shares of Common Stock identified in the above table that may become issuable under the 2026 Plan by reason of any stock dividend, stock split, recapitalization or similar adjustments. Estimated in accordance with Rules 457(c) and 457(h) solely for purposes of calculating the registration fee. The maximum price per share of Common Stock and the maximum aggregate offering price are based on the average of the high and low sale prices of the Common Stock as reported on The Nasdaq Stock Market on June 24, 2026, which date is within five business days prior to filing this Registration Statement on Form S-8. |
| 2 | Represents 400,000 shares of Common Stock of the Registrant that are reserved for issuance upon the vesting or settlement of restricted stock awards and performance share units granted to Shimon Steinmetz, the Registrant's Chief Financial Officer, as inducements material to Mr. Steinmetz's appointment pursuant to Rule 5635(c)(4) of the Nasdaq Listing Rules as described in the accompanying Registration Statement on Form S-8 (collectively, the "Inducement Awards"). Pursuant to Rule 416 of the Securities Act, this Registration Statement on Form S-8 also includes additional shares of Common Stock identified in the above table that may become issuable pursuant to the Inducement Awards by reason of any stock dividend, stock split, recapitalization or similar adjustments. Estimated in accordance with Rules 457(c) and 457(h) solely for purposes of calculating the registration fee. The maximum price per share of Common Stock and the maximum aggregate offering price are based on the average of the high and low sale price of the Common Stock as reported on The Nasdaq Stock Market on June 24, 2026, which date is within five business days prior to filing this Registration Statement on Form S-8. |

---

------

---

| | |
|:---|:---|
| **Table 2: Fee Offset Claims and Sources** | **☑ Not Applicable** |

---

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Note #** | **Registrant or Filer Name** | **Form or Filing Type** | **File Number** | **Initial Filing Date** | **Filing Date** | **Fee Offset Claimed** | **Security Type Associated with Fee Offset Claimed** | **Unsold Aggregate Offering Amount Associated with Fee Offset Claimed** | **Fee Paid with Fee Offset Source** |
| | **Rule 457(p)** | **Rule 457(p)** | **Rule 457(p)** | **Rule 457(p)** | **Rule 457(p)** | **Rule 457(p)** | **Rule 457(p)** | **Rule 457(p)** | **Rule 457(p)** | **Rule 457(p)** |
| **Fee Offset Claims** |  |  |  |  |  |  |  |  |  |  |
| **Fee Offset Sources** |  |  |  |  |  |  |  |  |  |  |

---

## Exhibit 5.1

**EXHIBIT 5.1**

![arq2024s8faegredrinkerheada.jpg](arq2024s8faegredrinkerheada.jpg)

**Faegre Drinker Biddle & Reath LLP**

1144 15<sup>th</sup> Street, Suite 3400

Denver, Colorado 80202

+1 303 607 3500

June 26, 2026

Arq, Inc.

8051 E. Maplewood Ave, Suite 210

Greenwood Village, CO 80111

Ladies and Gentlemen:

We have acted as counsel to Arq, Inc., a Delaware corporation (the "Company"), in connection with the preparation and filing with the Securities and Exchange Commission (the "Commission") of the Company's Registration Statement on Form S-8 (the "Registration Statement") under the Securities Act of 1933, as amended (the "Act"), registering the offer and sale of up to (i) 2,981,264 shares of the Company's common stock, par value $0.001 per share issuable by the Company pursuant to the Arq, Inc. 2026 Omnibus Incentive Plan (the "Plan"), including 1,081264 shares that remained issuable under the the Company's 2024 Omnibus Incentive Plan (the "Plan Shares") and (ii) 400,000 shares of Common Stock underlying certain restricted stock inducement awards and performance share unit inducement awards (the "Inducement Shares" and, such award agreements, the "Inducement Awards") granted to Shimon Steinmetz as inducements material to Mr. Steinmetz's appointment.

For purposes of this opinion letter, we have examined the Plan, the Registration Statement, the Second Amended and Restated Certificate of Incorporation of the Company, as amended and including all certificates of designations as currently in effect, the Amended and Restated Bylaws of the Company, as currently in effect, the Inducement Awards, the resolutions of the Company's board of directors authorizing the Plan and the issuance of the Plan Shares and the resolutions of the Company's board of directors authorizing the Inducement Awards and the issuance of the Inducement Shares. We have also examined a certificate of the Secretary of the Company dated the date hereof (the "Certificate") and originals, or copies certified or otherwise authenticated to our satisfaction, of such corporate records and other records, agreements, instruments, certificates of public officials and documents as we have deemed necessary as a basis for the opinions hereinafter expressed and have reviewed such matters of law as we have deemed relevant hereto. As to facts material to this opinion letter, we have relied upon certificates, statements or representations of public officials, of officers and representatives of the Company (including the Certificate) and of others, without any independent verification thereof.

In our examination, we have assumed: (i) the legal capacity of all natural persons; (ii) the genuineness of all signatures, including electronic signatures; (iii) the authenticity of all documents submitted to us as originals; (iv) the conformity to original documents of all documents submitted to us as certified, conformed, photostatic or facsimile copies; (v) the authenticity of the originals of such latter documents; (vi) the truth, accuracy and completeness of the information, representations and warranties contained in the agreements, documents, instruments, certificates and records we have reviewed; and (vii) the absence of any undisclosed modifications to the agreements and instruments reviewed by us.

------

Based upon such examination and review and subject to the foregoing and the other qualifications, assumptions and limitations set forth herein, it is our opinion that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.All necessary corporate action on the part of the Company has been taken to authorize the issuance and sale of the Plan Shares to be issued in accordance with the Plan and that, when issued and sold as contemplated in the Registration Statement and related prospectus and in accordance with the Plan and any applicable award agreement and, where applicable, the consideration for the Plan Shares specified in the Plan and any applicable award agreement has been received by the Company, the Plan Shares will be legally and validly issued, fully paid and nonassessable.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.All necessary corporate action on the part of the Company has been taken to authorize the issuance and sale of the Inducement Shares to be issued in accordance with the applicable Inducement Agreement, and that, when (a) the Inducement Shares have been issued and sold upon the due exercise of the applicable stock options by the holder thereof, as contemplated in the Registration Statement and related prospectus and in accordance with the applicable Inducement Award, and (b) the consideration for the Inducement Shares specified in the applicable Inducement Agreement has been received by the Company, the Inducement Shares will be validly issued, fully paid and nonassessable.

We do not express any opinion herein with respect to the laws of any jurisdiction other than, subject to the limitations and assumptions contained herein, the General Corporation Law of the State of Delaware.

This opinion letter speaks only as of the date the Registration Statement becomes effective under the Act, and we assume no obligation to revise or supplement this opinion letter thereafter. This opinion letter is limited to the specific issues addressed herein, and no opinion may be inferred or implied beyond that expressly stated herein.

We hereby consent to the filing of this opinion letter as an exhibit to the Registration Statement. In giving such consent, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission promulgated thereunder.

---

| |
|:---|
| Very truly yours, |
| /s/ Faegre Drinker Biddle & Reath LLP |
| FAEGRE DRINKER BIDDLE & REATH LLP |

---

## Exhibit 10.1

**ARQ, INC.**

**INDUCEMENT AWARD**

**<u>Grant Notice of Restricted Stock Award</u>**

Arq, Inc. (the "<u>Company</u>") hereby grants an award (the "<u>Award</u>") of Restricted Stock (the "<u>Shares</u>") to you, the Participant named below. The Award is subject to the terms and subject to the conditions set forth in this Grant Notice and in the Restricted Stock Award Agreement (the "<u>Agreement</u>") attached hereto as <u>Exhibit A</u>. This Award is granted outside of the Arq, Inc. 2026 Omnibus Incentive Plan (the "<u>Plan</u>"), but shall be subject to terms and conditions substantially identical to the terms and conditions set forth in the Plan as if the Award were Restricted Stock granted under the Plan. This Award is an inducement material to Participant's entry into employment with the Company within the meaning of Nasdaq Listing Rule 5635(c)(4). Capitalized terms used herein or in the Agreement but not otherwise defined shall have the meanings set forth in the Plan.

---

| |
|:---|
| Name of Participant:  |
| Aggregate Number of Shares:  |
| Grant Date:  |
| Vesting Schedule: |

---

&nbsp;&nbsp;&nbsp;&nbsp;

By signing below or otherwise evidencing your acceptance of this Grant Notice in a manner approved by the Company, you agree to all of the terms and conditions contained in this Grant Notice and the Agreement and the Plan. You acknowledge that you have received and reviewed these documents and that they set forth the entire agreement between you and the Company regarding this Award. **If you fail to sign or accept this Grant Notice by ___, 202[6], this Award shall be void and of no further force or effect.**

---

| | |
|:---|:---|
| PARTICIPANT: | ARQ, INC. |
| <br>—————————————— | By: |
|  | Title: |

---

------

**Exhibit A**

**ARQ, INC.**

**INDUCEMENT AWARD**

**Restricted Stock Award Agreement**

**<u>Terms and Conditions</u>**

1.**<u>Award of Restricted Stock</u>.** The Company hereby confirms the grant to you, as of the Grant Date and subject to the terms and conditions of this Agreement and the Plan, of an award of Restricted Stock (the "<u>Shares</u>") in an aggregate amount as specified in the Grant Notice accompanying this Agreement (the "<u>Grant Notice</u>"). All Shares awarded hereunder will be deemed issued to you as fully paid and non-assessable Shares and you will have the right to vote the Shares at meetings of the Company's stockholders. The Company shall pay any applicable stock transfer taxes imposed upon the issuance of the Shares to you hereunder.

2.**<u>Consideration</u>**. The Award is made in consideration of the services to be rendered by you to the Company or its Affiliate.

3.**<u>Transfer Restrictions</u>**. The Shares awarded hereunder may not be sold, transferred by gift, pledged, hypothecated, or otherwise transferred or disposed of by you prior to the date when the Shares become vested pursuant to the Vesting Schedule set forth in the Grant Notice. Any attempt to transfer Restricted Stock in violation of this Section 3 will be null and void and, if any such attempt is made, the Shares will be forfeited and all of your rights to such Shares shall immediately terminate without any payment or consideration by the Company.

4.**<u>Evidence of Stock</u>**. The Restricted Stock may be credited to you in book entry form and held, along with any Additional Securities (as defined below and which shall also constitute "Restricted Stock" under this Agreement), in custody by the Company or an agent for the Company until the applicable restrictions have expired and you provide other instructions. If any certificates are issued for Restricted Stock during any Period of Restriction, such certificates shall bear an appropriate legend as determined by the Company referring to the applicable terms, conditions and restrictions and you shall deliver such certificate(s).

5.**<u>Distributions</u>**. The Company shall disburse to you all dividends and other distributions paid or made in cash with respect to the Shares and Additional Securities (whether vested or not), less any applicable withholding obligations, in one lump sum payment, within 30 days after the date the Shares (or Additional Securities) with respect to which the dividends or distributions were made become vested. If the Shares or Additional Securities are forfeited without becoming vested, any such dividends or distributions also will be forfeited and you shall have no right to such dividends or distributions.

6.**<u>Taxes</u>**. You shall, as Shares of Restricted Stock vest, or at the time withholding is otherwise required by any Applicable Law (including in the event you coordinates with the Company to make a timely election pursuant to Section 83(b) of the Code), pay the Company the amount necessary to satisfy any applicable foreign, federal, state, and local income and employment tax withholding obligations in a form of payment acceptable to the Company. The Company will withhold that portion of your vested Shares to cover the applicable withholding tax liability unless you notify the Company that you desire to elect to pay the applicable withholding tax liability by other means at least five business days prior to the applicable vesting date and in a form of payment acceptable to the Company.

7.**<u>Additional Securities</u>**. Any securities received as the result of ownership of the Restricted Stock (the "<u>Additional Securities</u>"), including, but not by way of limitation, warrants, options and securities received as a stock dividend or in a stock split, or as a result of a recapitalization or reorganization or other similar change in the Company's capital structure, shall be retained in book entry form in the same manner and subject to the same conditions and restrictions as the Shares of Restricted Stock with respect to which they

------

were issued, including, without limitation, the Vesting Schedule set forth in the Grant Notice and the forfeiture provisions set forth in Section 8. You shall be entitled to direct the Company to exercise any warrant, option or other right received as Additional Securities upon supplying the funds necessary to do so, in which event the securities so purchased shall constitute Additional Securities, but you may not direct the Company to sell any such warrant, option or right. If Additional Securities consist of a convertible security, you may exercise any conversion right, and any securities so acquired shall constitute Additional Securities.

8.**<u>Forfeiture of Shares</u>**. Unless otherwise provided in any employment agreement between you and the Company, if your Continuous Service terminates prior to the vesting of any Shares for any reason, with or without Cause (including death or disability), then all of the unvested Shares of Restricted Stock shall automatically be deemed forfeited to the Company upon such termination of Continuous Service, without any action by the Company or you and without any consideration due or payable to you, and you shall cease to have any further right, title or interest in the forfeited Restricted Stock. Upon forfeiture, the Company and/or its assigns shall become the legal and beneficial owner of the Shares forfeited and all rights and interest thereon or related thereto, and the Company shall have the right to transfer to its own name or its assigns the number of Shares forfeited, without any action by you.

9.**<u>Stop-Transfer Notices</u>**. In order to ensure compliance with the restrictions on transfer set forth in this Agreement, the Grant Notice or the Plan, the Company may issue appropriate "stop transfer" instructions to its transfer agent, if any, and, if the Company transfers its own securities, it may make appropriate notations to the same effect in its own records.

10.**<u>Refusal to Transfer</u>**. The Company shall not be required (a) to transfer on its books any Shares that have been sold or otherwise transferred in violation of any of the provisions of this Agreement or (b) to treat as owner of such Shares or to accord the right to vote or pay dividends to any purchaser or other transferee to whom such Shares shall have been so transferred.

11.**<u>Restrictive Legends</u>**. You understand and agree that the Company may cause the legend set forth below or legends substantially equivalent thereto, to be placed upon any certificate(s) evidencing ownership of the Shares, if applicable, together with any other legends that may be required by the Company or by state or federal securities laws:

THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN RESTRICTIONS ON TRANSFER, INCLUDING POSSIBLE FORFEITURE, AS SET FORTH IN THE RESTRICTED STOCK AWARD AGREEMENT BETWEEN THE ISSUER AND THE ORIGINAL HOLDER OF THESE SHARES, A COPY OF WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE ISSUER AND SUCH TRANSFER RESTRICTIONS, INCLUDING POSSIBLE FORFEITURE, ARE BINDING ON TRANSFEREES OF THESE SHARES.

12.**<u>Entire Agreement</u>**. The Grant Notice, the Plan, this Agreement, and any employment agreement entered into between you and the Company, constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements of the Company and you with respect to the subject matter hereof, and may not be modified adversely to your interest except by means of a writing signed by the Company and you. In the event of any conflict between the terms set forth in the Grant Notice or this Agreement and in the Plan, the terms of this Agreement shall control.

13.**<u>Headings</u>**. The captions used in this Agreement are inserted for convenience and shall not be deemed a part of this Agreement for construction or interpretation.

14.**<u>Compliance with Laws</u>**. Notwithstanding anything contained in this Agreement or the Plan, the Company may not take any actions hereunder, and no award shall be granted, that would violate the Securities Act of 1933, as amended (the "Act"), the Exchange Act, the Code, or any other securities or tax or

------

other Applicable Law or regulation. Notwithstanding anything to the contrary contained herein, the Shares issuable upon vesting shall not be issued unless such Shares are then registered under the Act, or, if such Shares are not then so registered, the Company has determined that such vesting and issuance would be exempt from the registration requirements of the Act.

15.**<u>Notices</u>**. Every notice or other communication relating to this Agreement shall be in writing and shall be mailed to or delivered (including electronically) to the party for whom it is intended at such address as may from time to time be designated by it in a notice mailed or delivered to the other party as herein provided. Unless and until some other address is so designated, all notices or communications by you to the Company shall be mailed or delivered to the Company, to the attention of its General Counsel, at its office at 8501 E Maplewood Drive, Ste.210, Greenwood Village, CO 80111, and all notices or communications by the Company to you may be given to you personally or may be mailed or, if you are still a Company service provider, emailed to you at the address indicated in the Company's records as your most recent mailing or email address.

16.**<u>Administration</u>**. You understand that the Company and its Subsidiaries hold certain personal information about you, including, but not limited to, information such as your name, home address, telephone number, date of birth, salary, nationality, job title, social security number, social insurance number or other such tax identity number and details of all Awards or other entitlement to shares of common stock awarded, cancelled, exercised, vested, unvested or outstanding in your favor ("<u>Personal Data</u>").

You understand that in order for the Company to process your Award and maintain a record of Shares under the Plan, the Company shall collect, use, transfer and disclose Personal Data within the Company and among its Affiliates electronically or otherwise, as necessary for the implementation and administration of the Plan including, in the case of a social insurance number, for income reporting purposes as required by law. You further understand that the Company may transfer Personal Data, electronically or otherwise, to third parties, including but not limited to such third parties as outside tax, accounting, technical and legal consultants when such third parties are assisting the Company or its Affiliates in the implementation and administration of the Plan. You understand that such recipients may be located within the jurisdiction of your residence, or within the United States or elsewhere and are subject to the legal requirements in those jurisdictions. You understand that the employees of the Company, its Affiliates and third parties performing work related to the implementation and administration of the Plan shall have access to the Personal Data as is necessary to fulfill their duties related to the implementation and administration of the Plan. By accepting this Award, you consent, to the fullest extent permitted by law, to the collection, use, transfer and disclosure, electronically or otherwise, of your Personal Data by or to such entities for such purposes and you accept that this may involve the transfer of Personal Data to a country which may not have the same level of data protection law as the country in which this Agreement is executed. You confirm that if you have provided or, in the future, will provide Personal Data concerning third parties including beneficiaries, you have the consent of such third party to provide their Personal Data to the Company for the same purposes.

You understand that you may, at any time, request to review the Personal Data and require any necessary amendments to it by contacting the Company in writing. As well, you may always elect to forego participation in the Plan or any other award program.

17.**<u>Additional Provisions</u>**.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)**&nbsp;&nbsp;&nbsp;&nbsp;**<u>No Right to Continued Service</u>. This Agreement does not give you a right to continued employment or service with the Company or any Affiliate, and the Company or any such Affiliate may terminate you at any time and otherwise deal with you without regard to the effect it may have upon you under this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;<u>Governing Law and Venue</u>. This Agreement, the parties' performance hereunder, and the relationship between them shall be governed by, construed, and enforced in accordance with the laws of the

------

State of Delaware, without giving effect to the choice of law principles thereof. The parties agree that any action relating to or arising out of this Agreement shall take place exclusively in the State of Colorado, and you consent to the jurisdiction of the federal and/or state courts in Colorado. You further consent to personal jurisdiction and venue in both such courts and to service of process by United States Mail or express courier service in any such action.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;<u>Severability</u>. The provisions of Grant Notice and this Agreement shall be severable and if any provision of Grant Notice or this Agreement is found by any court to be unenforceable, in whole or in part, the remaining provisions shall nevertheless be enforceable and binding on the parties. You also agree that any trier of fact may modify any invalid, overbroad or unenforceable provision of this Agreement so that such provision, as modified, is valid and enforceable under applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;&nbsp;&nbsp;&nbsp;<u>Binding Effect</u>. This Agreement will be binding in all respects on your heirs, representatives, successors and assigns, and on the successors and assigns of the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;&nbsp;&nbsp;&nbsp;<u>Electronic Delivery and Acceptance</u>. The Company may deliver any documents related to this Award by electronic means and request your acceptance of this Agreement by electronic means. You hereby consent to receive all applicable documentation by electronic delivery and to participate in the Plan through an on-line (and/or voice activated) system established and maintained by the Company or the Company's third-party stock plan administrator.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f)&nbsp;&nbsp;&nbsp;&nbsp;<u>Counterparts</u>. The Grant Notice may be signed in two counterparts, each of which will be an original, but both of which will constitute one and the same instrument.

18.**<u>Appendix</u>**. This Award and the Shares acquired under the Plan upon settlement of the Units shall be subject to any and all special terms and provisions, if any, as set forth in the Appendix for your country of residence, which Appendix is incorporated into and made a part of this Agreement.

***By signing the Grant Notice attached to this Agreement or otherwise accepting this Agreement in a manner approved by the Company, you agree to all the terms and conditions described above and in the Plan document.***

## Exhibit 10.2

**ARQ, INC.**

**INDUCEMENT AWARD**

**<u>Grant Notice of Performance Stock Units</u>**

Arq, Inc. (the "<u>Company</u>") hereby grants an award (the "<u>Award</u>") of Performance Stock Units ("<u>Units</u>") to you, the Participant named below. Each Unit represents the right to receive one share of common stock, par value $0.001 per share, of the Company (the "<u>Common Stock</u>") upon the terms and subject to the conditions set forth in this Grant Notice and in the Performance Stock Unit Agreement (the "<u>Agreement</u>") attached hereto as <u>Exhibit A</u>. This Award is granted outside of the Arq, Inc. 2026 Omnibus Incentive Plan (the "<u>Plan</u>"), but shall be subject to terms and conditions substantially identical to the terms and conditions set forth in the Plan as if the Award were Performance Stock Units granted under the Plan. This Award is an inducement material to Participant's entry into employment with the Company within the meaning of Nasdaq Listing Rule 5635(c)(4). Capitalized terms used herein or in the Agreement but not otherwise defined shall have the meanings set forth in the Plan.

---

| | |
|:---|:---|
| Name of Participant:  |  |
| Target Number of Performance Stock Units: |  |
| Grant Date:  |  |
| Performance Period: | . |
| Vesting Schedule: |  |

---

&nbsp;&nbsp;&nbsp;&nbsp;

By signing below or otherwise evidencing your acceptance of this Grant Notice in a manner approved by the Company, you agree to all of the terms and conditions contained in this Grant Notice and the Agreement and the Plan. You acknowledge that you have received and reviewed these documents and that they set forth the entire agreement between you and the Company regarding this Award of Performance Stock Units. **If you fail to sign or accept this Grant Notice by ___, 202[6], this Award shall be void and of no further force or effect.**

---

| | |
|:---|:---|
| PARTICIPANT: | ARQ, INC. |
| <br>—————————————— | By: |
|  | Title: |

---

------

**Exhibit A**

**ARQ, INC.**

**INDUCEMENT AWARD**

**Performance Stock Unit Agreement**

**<u>Terms and Conditions</u>**

1.**<u>Award of Performance Stock Units</u>.** The Company hereby confirms the grant to you, as of the Grant Date and subject to the terms and conditions of this Agreement and the Plan, of an award of Performance Stock Units (the "<u>Units</u>") in an aggregate amount equal to the Target Number of Performance Stock Units specified in the Grant Notice accompanying this Agreement (the "<u>Grant Notice</u>"). The number of Units that may actually be earned and become eligible to vest pursuant to this Award may not (except for any Dividend Equivalent Units credited to you pursuant to Section 6 below) exceed the Target Number of Performance Stock Units specified in the Grant Notice for each Tranche. Each Unit that is earned as a result of the performance goals specified in the Grant Notice having been satisfied and which thereafter vests represents the right to receive one Share of the Company's common stock. Prior to their settlement or forfeiture in accordance with the terms of the Grant Notice and this Agreement, the Units granted to you will be credited to a performance stock unit account in your name maintained by the Company. This account will be unfunded and maintained for book-keeping purposes only, with the Units simply representing an unfunded and unsecured contingent obligation of the Company.

2.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Restrictions Applicable to Units</u>.** Neither this Award nor the Units subject to this Award may be sold, assigned, transferred, exchanged or encumbered, voluntarily or involuntarily, other than, to the extent allowed by the Committee, pursuant to a domestic relations order. Following any such transfer, this Award shall continue to be subject to the same terms and conditions that were applicable to the Award immediately prior to its transfer. Any attempted transfer in violation of this Section 2 shall be void and without effect. The Units and your right to receive Shares in settlement of any Units under this Agreement shall be subject to forfeiture as provided in Sections 4 and 8.

3.&nbsp;&nbsp;&nbsp;&nbsp;**<u>No Shareholder Rights</u>**. The Units subject to this Award do not entitle you to any rights of a holder of the Company's common stock. You will not have any of the rights of a shareholder of the Company in connection with any Units granted or earned pursuant to this Agreement unless and until Shares are issued to you in settlement of earned and vested Units as provided in Section 5.

4.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Vesting and Forfeiture of Units</u>.** Subject in all cases to Section 8 of this Agreement, the Units shall vest at the earliest of the following times and to the degree specified.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)<u>Vesting</u>. The Award shall not be vested as of the Grant Date set forth in the Grant Notice and shall be forfeitable unless and until otherwise vested pursuant to the terms of the Grant Notice and this Agreement. After the Grant Date, subject to termination as provided in this Agreement and the Plan, the Award shall become vested as described in the Grant Notice with respect to that number of Units as set forth in the Grant Notice.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;<u>Certain Terminations of Continuous Service</u>. If you experience a termination of Continuous Service as a result of (i) the Company's termination of your employment without Cause (as defined in the Employment Agreement) or (ii) your resignation for Good Reason (as defined in the Employment Agreement), or as a result of your death or Disability (as defined in the Employment Agreement), then provided any applicable release condition set forth in your Employment Agreement is satisfied, all unvested Units shall become vested Units as of the Release Effective Date (as defined in the Employment Agreement).

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;<u>Forfeiture of Unvested Units</u>. With respect to each Tranche of the Award, to the extent the performance goal is not achieved as of the end of the Performance Period or your Continuous Service terminates for any reason other than as set forth in Section 4(b) prior to the end of the Performance Period, all unvested Units shall immediately be forfeited.

5.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Settlement of Units</u>***.* Subject to Section 8 below, as soon as practicable after any date on which Units vest (but no later than the 15<sup>th</sup> day of the third calendar month following the applicable vesting date), the Company shall cause to be issued and delivered to you (or to your personal representative or your designated beneficiary or estate in the event of your death, as applicable) one Share in payment and settlement of each vested Unit. Delivery of the Shares shall be effected by the issuance of a stock certificate to you, by an appropriate entry in the stock register maintained by the Company's transfer agent with a notice of issuance provided to you, or by the electronic delivery of the Shares to a brokerage account you designate, and shall be subject to the tax withholding provisions of Section 7 and compliance with all applicable legal requirements as provided in the Plan and shall be in complete satisfaction and settlement of such vested Units. The Company will pay any original issue or transfer taxes with respect to the issue and transfer of Shares to you pursuant to this Agreement, and all fees and expenses incurred by it in connection therewith. If the Units that vest include a fractional Unit, the Company shall round the number of vested Units to the nearest whole Unit prior to issuance of Shares as provided herein.

6.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Dividend Equivalents</u>**. If the Company pays cash dividends on its Shares while any Units subject to this Agreement are outstanding, then on the date this Award or portion thereof vests pursuant to Section 4 above, a Total Dividend Equivalent amount will be credited to your performance stock unit account and shall be deemed reinvested in additional Units ("<u>Dividend Equivalent Units</u>"). The Total Dividend Equivalent amount will be determined by multiplying the number of underlying Units determined to have vested by the per share amount of each cash dividend paid on the Company's common stock with a record date and payment date occurring between the Grant Date and the applicable vesting date, and adding those products together. Each of those products is referred to as a "<u>Dividend Equivalent Amount</u>." The number of Dividend Equivalent Units to be credited to your performance stock unit account pursuant to this deemed reinvestment will be determined by dividing each Dividend Equivalent Amount by the Fair Market Value of a share of the Company's common stock on the applicable dividend payment date and adding those quotients together. Any Dividend Equivalent Units so credited will be fully vested and subject to settlement with the underlying Units as provided in Section 5 above.

7.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Tax Consequences and Withholding</u>**. No Shares will be delivered to you in settlement of vested Units unless you have made arrangements acceptable to the Company for payment of any federal, state, local or foreign withholding taxes that may be due as a result of the delivery of the Shares. You hereby authorize the Company (or any Affiliate) to withhold from payroll or other amounts payable to you any sums required to satisfy such withholding tax obligations, and otherwise agree to satisfy such obligations in accordance with the provisions of Section 15 of the Plan. You may elect to satisfy such withholding tax obligations by having the Company withhold a number of Shares that would otherwise be issued to you in settlement of the Units and that have a fair market value equal to the amount of such withholding tax obligations by notifying the Company of such election prior to the applicable vesting date.

8.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Forfeiture of Award and Compensation Recovery</u>**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;<u>Forfeiture Conditions</u>. Notwithstanding anything to the contrary in this Agreement, if your Continuous Service is terminated for Cause (as defined in the Plan), or if, during the term of your Continuous Service with the Company and its Subsidiaries and for one year after such Continuous Service ends (the "<u>Restricted Period</u>"), you breach any of the restrictive covenants contained in your employment agreement, if any, then (i) you shall immediately forfeit this Award and any right to receive Shares that have not yet been issued pursuant to Section 5, and (ii) with respect to Shares that have been issued pursuant to this Award,

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either (A) you shall return such Shares to the Company, or (B) you shall pay to the Company in cash an amount equal to the Fair Market Value of such Shares as of the respective vesting date of the underlying Units.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;<u>Compensation Recovery Policy</u>. In addition to the provisions in Sections 8(a), to the extent that this Award and any compensation associated therewith is considered "<u>incentive-based compensation</u>" within the meaning and subject to the requirements of Section 10D of the Exchange Act, this Award and any compensation associated therewith shall be subject to potential forfeiture or recovery by the Company in accordance with any compensation recovery policy adopted by the Board or the Committee in response to the requirements of Section 10D of the Exchange Act and any implementing rules and regulations thereunder adopted by the Securities and Exchange Commission or any national securities exchange on which the Company's Shares are then listed. This Agreement may be unilaterally amended by the Committee to comply with any such compensation recovery policy.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;<u>Remedies</u>. The parties expressly agree that the forfeiture and repayment obligations contained in this Section 8 do not constitute the Company's exclusive remedy for your violation of Section 8. The Company may seek any additional legal or equitable remedy, including injunctive relief, for any such violation.

9.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Notices</u>**. Every notice or other communication relating to this Agreement shall be in writing and shall be mailed to or delivered (including electronically) to the party for whom it is intended at such address as may from time to time be designated by it in a notice mailed or delivered to the other party as herein provided. Unless and until some other address is so designated, all notices or communications by you to the Company shall be mailed or delivered to the Company, to the attention of its General Counsel, at its office at 8501 E Maplewood Drive, Ste.210, Greenwood Village, CO 80111, and all notices or communications by the Company to you may be given to you personally or may be mailed or, if you are still a Company service provider, emailed to you at the address indicated in the Company's records as your most recent mailing or email address.

10.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Administration</u>**. You understand that the Company and its Subsidiaries hold certain personal information about you, including, but not limited to, information such as your name, home address, telephone number, date of birth, salary, nationality, job title, social security number, social insurance number or other such tax identity number and details of all Awards or other entitlement to shares of common stock awarded, cancelled, exercised, vested, unvested or outstanding in your favor ("<u>Personal Data</u>").

You understand that in order for the Company to process your Award and maintain a record of Shares under the Plan, the Company shall collect, use, transfer and disclose Personal Data within the Company and among its Affiliates electronically or otherwise, as necessary for the implementation and administration of the Plan including, in the case of a social insurance number, for income reporting purposes as required by law. You further understand that the Company may transfer Personal Data, electronically or otherwise, to third parties, including but not limited to such third parties as outside tax, accounting, technical and legal consultants when such third parties are assisting the Company or its Affiliates in the implementation and administration of the Plan. You understand that such recipients may be located within the jurisdiction of your residence, or within the United States or elsewhere and are subject to the legal requirements in those jurisdictions. You understand that the employees of the Company, its Affiliates and third parties performing work related to the implementation and administration of the Plan shall have access to the Personal Data as is necessary to fulfill their duties related to the implementation and administration of the Plan. By accepting this Award, you consent, to the fullest extent permitted by law, to the collection, use, transfer and disclosure, electronically or otherwise, of your Personal Data by or to such entities for such purposes and you accept that this may involve the transfer of Personal Data to a country which may not have the same level of data protection law as the country in which this Agreement is executed. You confirm that if you have provided or, in the future, will provide Personal Data concerning third parties including

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beneficiaries, you have the consent of such third party to provide their Personal Data to the Company for the same purposes.

You understand that you may, at any time, request to review the Personal Data and require any necessary amendments to it by contacting the Company in writing. As well, you may always elect to forego participation in the Plan or any other award program.

11.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Additional Provisions</u>**.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)**&nbsp;&nbsp;&nbsp;&nbsp;**<u>No Right to Continued Service</u>. This Agreement does not give you a right to continued employment or service with the Company or any Affiliate, and the Company or any such Affiliate may terminate you at any time and otherwise deal with you without regard to the effect it may have upon you under this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;<u>Governing Plan Document</u>. This Agreement and the Award are subject to all the provisions of the Plan and to all interpretations, rules and regulations which may, from time to time, be adopted and promulgated by the Committee pursuant to the Plan. If there is any conflict between the provisions of this Agreement and the Plan, the provisions of the Plan will govern.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;<u>Governing Law and Venue</u>. This Agreement, the parties' performance hereunder, and the relationship between them shall be governed by, construed, and enforced in accordance with the laws of the State of Delaware, without giving effect to the choice of law principles thereof. The parties agree that any action relating to or arising out of this Agreement shall take place exclusively in the State of Colorado, and you consent to the jurisdiction of the federal and/or state courts in Colorado. You further consent to personal jurisdiction and venue in both such courts and to service of process by United States Mail or express courier service in any such action.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;&nbsp;&nbsp;&nbsp;<u>Severability</u>. The provisions of this Agreement shall be severable and if any provision of this Agreement is found by any court to be unenforceable, in whole or in part, the remainder of this Agreement shall nevertheless be enforceable and binding on the parties. You also agree that any trier of fact may modify any invalid, overbroad or unenforceable provision of this Agreement so that such provision, as modified, is valid and enforceable under applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;&nbsp;&nbsp;&nbsp;<u>Binding Effect</u>. This Agreement will be binding in all respects on your heirs, representatives, successors and assigns, and on the successors and assigns of the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f)&nbsp;&nbsp;&nbsp;&nbsp;<u>Section 409A of the Code</u>. The award of Units as provided in this Agreement and any issuance of Shares or payment pursuant to this Agreement are intended to be exempt from Section 409A of the Code under the short-term deferral exception specified in Treas. Reg. § 1.409A-l(b)(4) or compliant with Section 409A of the Code.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g)&nbsp;&nbsp;&nbsp;&nbsp;<u>Electronic Delivery and Acceptance</u>. The Company may deliver any documents related to this Performance Stock Unit Award by electronic means and request your acceptance of this Agreement by electronic means. You hereby consent to receive all applicable documentation by electronic delivery and to participate in the Plan through an on-line (and/or voice activated) system established and maintained by the Company or the Company's third-party stock plan administrator.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h)&nbsp;&nbsp;&nbsp;&nbsp;<u>Counterparts</u>. The Grant Notice may be signed in two counterparts, each of which will be an original, but both of which will constitute one and the same instrument.

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12.&nbsp;&nbsp;&nbsp;&nbsp;**<u>Appendix</u>**. This Award and the Shares acquired under the Plan upon settlement of the Units shall be subject to any and all special terms and provisions, if any, as set forth in the Appendix for your country of residence, which Appendix is incorporated into and made a part of this Agreement.

***By signing the Grant Notice attached to this Agreement or otherwise accepting this Agreement in a manner approved by the Company, you agree to all the terms and conditions described above and in the Plan document.***

## Exhibit 23.1

**Exhibit 23.1**

**Consent of Independent Registered Public Accounting Firm**

We consent to the incorporation by reference in this Registration Statement on Form S-8 of Arq, Inc. (the "Company") of our reports dated March 9, 2026, relating to the consolidated financial statements of the Company and the effectiveness of internal control over financial reporting of the Company, appearing in the Annual Report on Form 10-K of the Company for the year ended December 31, 2025, filed with the Securities and Exchange Commission.

/s/ Baker Tilly US, LLP

Denver, Colorado

June 26, 2026

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