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ARQ · Current Report (Form 8-K) · Filed May 1, 2026

Arq Inc — Current Report (Form 8-K)

Form
8-K
Filed
May 1, 2026
Period
Apr 29, 2026
Ticker
ARQ
Accession
0001515156-26-000057
Boardroom Alpha · Filing insights

Arq’s COO and CFO depart; separation agreements grant severance and accelerated equity vesting.

About Arq Inc
Market cap
$117M
1Y TSR
−49.8%
3Y TSR
+19.0%
Board grade
B-
Sector
Industrials
CEO
Robert E Rasmus
Last annual meeting: Jun 10, 2026 · View full Arq Inc profile →
ades-20260429


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): April 29, 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 SymbolName of each exchange on which registered
Common stock, par value $0.001 per share ARQNasdaq 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 5.02Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
As previously disclosed, effective March 4, 2026, Jeremy “Deke” Williamson ceased serving as the Chief Operating Officer and Jay Voncannon ceased serving as Chief Financial Officer of Arq, Inc. (the “Company”) but remained employed by the Company until April 18, 2026. In connection with the termination of their employment, Messrs. Williamson and Voncannon each entered into a Separation and General Release Agreement with the Company (the “Williamson Separation Agreement” and the “Voncannon Separation Agreement,” respectively, and together, the “Separation Agreements”). Each of the Separation Agreements became effective as of April 29, 2026 (the “Effective Date”) after the expiration of a statutory revocation period.
Pursuant to the terms of the Williamson Separation Agreement, Mr. Williamson continued to receive his base salary and equity incentive vesting benefits, if any, through the date of termination and, as of the Effective Date, is entitled to receive the following payment and benefits in connection with his termination: (i) twelve months of Mr. Williamson’s base salary at the time of his termination, or approximately $361,500, paid bi-weekly in accordance with the Company’s established payroll dates; (ii) accelerated vesting of 34,270 shares of restricted stock; (iii) accelerated vesting of 49,736 performance share units with a possible vesting range of 0% to 200% based on total shareholder return as compared to the Company's established peer group to be calculated within sixty days of the Effective Date; and (iv) a lump sum payment equal to twelve months of COBRA premiums. The Williamson Separation Agreement includes a customary release of claims.
Pursuant to the terms of the Voncannon Separation Agreement, Mr. Voncannon continued to receive his base salary and equity incentive vesting benefits, if any, through the date of termination, as well as statutory COBRA benefits for a period of eighteen months and, as of the Effective Date, is entitled to the accelerated vesting of 50,000 shares of restricted stock held by Mr. Voncannon. The Voncannon Separation Agreement includes a customary release of claims.
The foregoing descriptions of the Separation Agreements are qualified in their entirety by reference to the full text of the Williamson Separation Agreement and the Voncannon Separation Agreement, attached hereto as Exhibit 10.1 and Exhibit 10.2, respectively, and each incorporated herein by reference.

Item 9.01Financial Statements and Exhibits.
(d)Exhibits
Exhibit No.Description
10.1
10.2
104Cover Page Interactive Data File (embedded within the Inline XBRL document).



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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: May 1, 2026
 Arq, Inc.
 Registrant
 /s/ Robert Rasmus
 Robert Rasmus
 Chief Executive Officer

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Reference

Frequently asked questions

When did Arq Inc file this 8-K?
Arq Inc (ARQ) filed this Current Report (Form 8-K) with the SEC on May 1, 2026. The accession number assigned by EDGAR is 0001515156-26-000057.
What does an 8-K disclose?
Form 8-K is the SEC's current-report form, used to disclose material events between periodic reports (10-K / 10-Q). Triggers include CEO/CFO departures, acquisitions, bankruptcies, earnings releases, auditor changes, changes in fiscal year, and amendments to corporate governance. Each 8-K is keyed to one or more Item numbers (1.01 through 9.01).
What is the key takeaway from this filing?
Arq’s COO and CFO depart; separation agreements grant severance and accelerated equity vesting. This is Boardroom Alpha's one-line summary of the current report; see the full filing text above for the formal disclosure.
What Item codes does an 8-K cover?
An 8-K's Item codes (1.01 through 9.01) specify what kind of event is being disclosed — e.g. Item 1.01 for entering a material agreement, Item 5.02 for departure/election of directors and executive officers, Item 8.01 for other events. The Item codes for this 8-K appear in the filing text above.
Where can I find Arq Inc's prior current reports on EDGAR?
The SEC EDGAR browser lists every 8-K Arq Inc has filed under CIK 1515156, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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