U.S. SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): ~~January~~February 2827, 2026

ARQ, INC.

(Name of registrant as specified in its charter)

Delaware

001-37822

27-5472457

(State or other jurisdiction of incorporation)

(Commission File Number)

(I.R.S. Employer Identification Number)


8051 E. Maplewood Avenue, Suite 210, Greenwood Village, CO						80111
(Address of principal executive offices)						(Zip Code)

Registrant's telephone number, including area code: (720) 598-3500

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


☐						Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)


☐						Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)


☐						Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))


☐						Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Class

Trading Symbol

Name of each exchange on which registered

Common stock, par value $0.001 per share

ARQ

Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).


	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 13(a) of the Exchange Act.		☐


Item 1.01						Entry into a Material Definitive Agreement.

On ~~January~~February 2827, 2026, Arq, Inc. (the "Company") and certain of its subsidiaries, entered into the ~~third~~fourth amendment (the "~~Third~~Fourth Amendment") to the Credit, Security and Guaranty Agreement (the "Revolving Credit Agreement"), dated December 27, 2024, as amended on May 6, 2025, ~~and~~ December 9, 2025, and January 28, 2026, with MidCap Funding IV Trust, in its capacity as agent, the lenders from time to time party thereto, and any entities that become party thereto as Guarantors. The ~~Third~~Fourth Amendment provides for, among other things, an extension to the amendments to the borrowing availability calculation included in the Revolving Credit Agreement, and an extension to the amendment to the Company's minimum liquidity covenant providing for decreased minimum liquidity required for the date range shown in the table below:

Applicable Dates						Minimum Liquidity Required
December 10, 2025, through February 27, 2026						$2.0 million
December 10, 2025, through March 31, 2026						$2.0 million
February 28, 2026, and at all times thereafter						$5.0 million
April 1, 2026, and at all times thereafter						$5.0 million

The foregoing description of the ~~Third~~Fourth Amendment is only a summary of its material terms and does not purport to be complete and is qualified in its entirety by reference to the full text of the ~~Third~~Fourth Amendment, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.


Item 9.01						Financial Statements and Exhibits.

(d)						Exhibits

Exhibit No.						Description
10.1						Amendment No. 34, dated as of ~~January~~February 2827, 2026, to Credit, Security and Guaranty Agreement, dated as of December 27, 2024, as amended, by and among Arq, Inc., certain subsidiaries of Arq, Inc., MidCap Funding IV Trust as agent, and the lenders from time to time party thereto.
104						Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: ~~January~~March 293, 2026


			Arq, Inc.
			Registrant


			/s/ Robert Rasmus
			Robert Rasmus
			Chief Executive Officer

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