Welcome to our dedicated page for Arq SEC filings (Ticker: ARQ), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Arq, Inc. filings document the public-company records of a Delaware environmental technology issuer focused on activated carbon and related carbon products. The record includes 8-K reports for quarterly and annual operating results, investor presentation materials, executive departures and separation agreements, and amendments to a revolving credit agreement that affect borrowing availability and liquidity covenants.
Arq’s proxy and material-event filings also address board and executive compensation matters, stockholder voting, a Tax Asset Protection Plan, modifications to security-holder rights, and the exhibits tied to financing, governance and capital-structure disclosures.
Arq, Inc. reported that it entered into a Ninth Amendment to its Tax Asset Protection Plan with Computershare Trust Company, N.A. as rights agent. The amendment updates the definition of the plan’s “Final Expiration Date.”
Under the Ninth Amendment, the Final Expiration Date will be the close of business on the earlier of December 31, 2027, or December 31, 2026 if stockholder approval has not been obtained before that date. The amendment and its terms are set out in full in Exhibit 4.1 to the report.
Arq, Inc. amended its revolving credit facility again on March 31, 2026, entering a fifth amendment to its Credit, Security and Guaranty Agreement with MidCap Funding IV Trust and other lenders. This amendment replaces the existing minimum liquidity covenant with a $2.5 million availability reserve requirement, which will rise to $5 million starting in January 2027.
The amendment also allows certain eligible equipment and defined Rolling Stock to be counted in the borrowing availability calculation and temporarily relaxes the definition of Eligible Accounts to permit higher single-customer concentration until August 2026. The full amendment text is referenced as Exhibit 10.1.
Arq, Inc. Chief Technology Officer Joseph M. Wong reported a routine share disposition related to taxes, not an open-market trade. On March 23, 2026, 10,085 shares of common stock were withheld at $2.27 per share to satisfy tax obligations from vesting restricted stock awards. After this tax-withholding transaction, Wong directly held 390,601 shares of Arq common stock.
Arq, Inc. reported that General Counsel and Corporate Secretary Smith Claiborne Benson had 8,025 shares of common stock withheld on March 23, 2026 to cover tax obligations tied to vesting restricted stock awards. This was a tax-withholding disposition rather than an open-market sale. Following the withholding, Benson directly holds 94,466 shares of Arq common stock.
Arq, Inc. reported that Chief Accounting Officer Stacia Hansen had 8,894 shares of common stock withheld on March 23, 2026 to satisfy tax obligations tied to the vesting of restricted stock awards. These shares were valued at $2.27 per share for the withholding calculation. After this tax-withholding event, Hansen directly holds 64,305 shares of Arq common stock.
Arq, Inc. Chief Executive Officer Robert E. Rasmus reported a routine tax-withholding share disposition tied to equity compensation. On March 23, 2026, 845 shares of common stock were withheld at $2.27 per share to satisfy tax obligations from vesting restricted stock awards.
Following this withholding, he directly holds 479,937 common shares. Additional indirect holdings are reported as 70,718 shares through RER Investments LLC and 527,779 shares through RER Legacy Investments II LLC, where he is the ultimate control person but disclaims beneficial ownership beyond his pecuniary interest.
Arq, Inc. reported that Omeshorn Holdings Ltd., an entity associated with director Richard Campbell-Breeden, purchased 150,000 shares of Arq common stock in an open-market transaction on March 23, 2026. The weighted average purchase price was $2.2111 per share, with individual trades between $2.140 and $2.285.
After this transaction, Omeshorn Holdings Ltd. held 404,786 Arq shares indirectly attributable to Campbell-Breeden, and he also held 86,868 shares directly in his own name.
Arq, Inc. Chief Technology Officer buys additional shares in open-market trade. Joseph M. Wong purchased 10,000 shares of Arq common stock in the open market at a weighted average price of $1.89 per share, with individual trade prices ranging from $1.885 to $1.89. Following this transaction, he directly owns 400,686 common shares.
Arq, Inc. director Carol S. Eicher reported an open-market purchase of 77,500 shares of Common Stock on March 13, 2026. The weighted average purchase price was $1.9485 per share, with individual trades executed between $1.925 and $1.950. Following this transaction, she directly owns 174,010 Arq shares.
Arq, Inc. reported that its General Counsel and Corporate Secretary, Smith Claiborne Benson, bought additional company stock in the open market. He purchased 1,000 shares of common stock on March 12 at $1.9185 per share and another 1,000 shares on March 16 at $1.9179 per share. Following these two transactions, his directly owned common stock holdings increased to 102,491 shares, indicating a modest personal increase in investment in the company.