Peter Owino was named Chief Accounting Officer of Arq, Inc., effective September 1, 2026. As of November 6, 2026, Arq, Inc. has reported 5 leadership change filings to the SEC under Item 5.02 of Form 8-K, from May 1, 2026 to August 28, 2026, naming 5 appointments (Form 8-K, August 28, 2026).
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Key facts
- · In / out: In · Person: Peter Owino · Role: Chief Accounting Officer · Effective: 2026-09-01 · 8-K, 2026-08-28
- · In / out: Reported · Person: not named in the filing · 8-K, 2026-07-23
- · In / out: In · Person: Peter Owino · Role: Chief Accounting Officer · Effective: 2026-06-12 · 8-K, 2026-06-18
- · In / out: In · Person: Shimon Steinmetz · Role: Chief Financial Officer · 8-K, 2026-05-27
- · In / out: Reported · Person: not named in the filing · 8-K, 2026-05-01
Arq, Inc. reported changes in 5 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-05-01 to 2026-08-28. They name 2 people. Every row below is cited to the filing it comes from, and this page adds each new change as Arq, Inc. files it.
Also on the record for Arq, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| April 27, 2026 | Stake report, Schedule 13G/A, by Orin Hirschman | — | 5%+ stakes | Source |
| March 12, 2026 | Stake report, Schedule 13G, by Daniel Kaufman | 5.12% of the class | 5%+ stakes | Source |
| January 28, 2026 | Stake report, Schedule 13G/A, by Orin Hirschman | 5.8% of the class | 5%+ stakes | Source |
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More on Arq, Inc. and the records around it.
Arq, Inc. elsewhere on the record
Companies that share a holder
- Daniel Kaufman also filed stake reports on 6 other companies: AUNA S.A. (May 2026), ABEONA THERAPEUTICS INC. (Mar 2026), DELCATH SYSTEMS, INC. (Mar 2026)
- Orin Hirschman also filed stake reports on 46 other companies: ASPEN AEROGELS, INC. (Oct 2026), Bionano Genomics, Inc. (Oct 2026), FENNEC PHARMACEUTICALS INC. (Oct 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-08-28 | In | Chief Accounting Officer | 2026-09-01 | 8-K, 2026-08-28 | |
| 2026-07-23 | Reported | not named in the filing | 8-K, 2026-07-23 | ||
| 2026-06-18 | In | Chief Accounting Officer | 2026-06-12 | 8-K, 2026-06-18 | |
| 2026-06-18 | In | 8-K, 2026-06-18 | |||
| 2026-05-27 | In | Chief Financial Officer | 8-K, 2026-05-27 | ||
| 2026-05-27 | In | 8-K, 2026-05-27 | |||
| 2026-05-01 | Reported | not named in the filing | 8-K, 2026-05-01 |
Who leads Arq, Inc., as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Chief Accounting Officer: Peter Owino, appointed, effective 2026-09-01 (filed 2026-08-28).
- Chief Financial Officer: Shimon Steinmetz, appointed (filed 2026-05-27).
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Find candidates like Chief Accounting Officer at Arq, Inc.Every change, in the filing's words
Appointed: Peter Owino, Chief Accounting Officer, effective 2026-09-01
On August 24, 2026, the Board of Directors (the "Board") of Arq, Inc. (the "Company") appointed Peter Owino, 52, as the Company's Chief Accounting Officer, effective September 1, 2026.
- Mr. Owino previously served as a consultant to the Company where he acted as its Interim Chief Accounting Officer.
- Mr. Owino will continue to serve as the Company's principal accounting officer.
- Mr. Owino has over twenty years of experience in accounting, finance, and Sarbanes-Oxley (SOX) compliance, in both private and public company settings.
- Prior to his appointment as the Company's Chief Accounting Officer, Mr. Owino was an accounting and finance consultant for Princeton Business Consulting, LLC ("Princeton Business Consulting"), a consulting firm focused on small to mid-sized businesses.
- Mr. Owino has served in various finance and accounting leadership roles, including as the Corporate Controller of Colliers Engineering & Design, a multidisciplinary engineering firm, from 2024 to 2026, and as the Chief Accounting Officer of Merchant e-Solutions, a merchant acquiring company and global payment processor from 2020 to 2022, where he successfully helped prepare the company for sale to a New York based private equity firm.
- From 2015 to 2020, Mr. Owino worked as a Director for KPMG New York, providing accounting advisory services.
- Before that, Mr. Owino was a Senior Director at Finjan Holdings, Inc. and also spent years working as a manager at both Deloitte & Touche and Ernst & Young.
Reported
The Amendment establishes a term for Mr. Rasmus's employment, which shall expire on July 23, 2029, subject to earlier termination or resignation.
- On July 23, 2026, Arq, Inc. (the "Company") and Robert Rasmus, President, Chief Executive Officer, and director of the Company, entered into an amendment (the "Amendment") to Mr. Rasmus's Employment Agreement, dated July 17, 2023 (as amended, the "Employment Agreement").
- The Amendment further provides that, as of the Amendment Effective Date (as defined in the Amendment), Mr. Rasmus's annual salary shall be set at $50,000 and Mr. Rasmus will no longer be eligible to receive an annual bonus or participate in the Company's long-term incentive compensation plan.
- In addition, the Amendment also provides for reimbursement of certain business expenses.
- In connection with entry into the Amendment, the Compensation Committee of the Board of Directors of the Company authorized the grant of 600,000 time-based restricted stock units (the "Time-Based RSUs") and 600,000 performance-based restricted stock units (the "Performance-Based RSUs"), each under the Company's 2026 Omnibus Incentive Plan (the "2026 Plan") to Mr. Rasmus.
- Pursuant to the terms of the Time-Based RSUs, 300,000 of the Time-Based RSUs will vest on the second anniversary of the grant date, and the remainder will vest upon the third anniversary of the grant date.
Appointed: Peter Owino, Chief Accounting Officer, effective 2026-06-12
On June 14, 2026, the Board of Directors (the "Board") of Arq, Inc. (the "Company") appointed Peter Owino, 51, as the Company's Interim Chief Accounting Officer, effective as of June 12, 2026.
Appointed: Peter Owino
Upon the effective date of his appointment, Mr. Owino will serve as the Company's principal accounting officer until the appointment of his successor.
- Mr. Owino has over twenty years of experience in accounting, finance, and Sarbanes-Oxley (SOX) compliance, in both private and public company settings.
- Mr. Owino is an accounting and finance consultant for Princeton Business Consulting, LLC ("Princeton Business Consulting"), a consulting firm focused on small to mid-sized businesses.
- Mr. Owino has served in various finance and accounting leadership roles, including as the Corporate Controller of Colliers Engineering & Design, a multidisciplinary engineering firm, from 2024 to 2026, and as the Chief Accounting Officer of Merchant e-Solutions, a merchant acquiring company and global payment processor from 2020 to 2022, where he successfully helped prepare the company for sale to a New York based private equity firm.
- From 2015 to 2020, Mr. Owino worked as a Director for KPMG New York, providing accounting advisory services.
- Before that, Mr. Owino was a Senior Director at Finjan Holdings, Inc. and also spent years working as a manager at both Deloitte & Touche and Ernst & Young.
- Mr. Owino holds a Bachelor of Commerce degree in accounting from Kenyatta University in Nairobi, Kenya.
- Mr. Owino is also a licensed certified public accountant.
Appointed: Shimon Steinmetz, Chief Financial Officer
On May 26, 2026, the Board of Directors (the "Board") of Arq, Inc. (the "Company") appointed Shimon Steinmetz, 48, as the Company's Executive Vice President and Chief Financial Officer, effective as of his commencement date which will be on or prior to July 27, 2026.
Appointed: Shimon Steinmetz
Upon the effective date of his appointment, Mr. Steinmetz will serve as the Company's principal financial officer.
- Mr. Steinmetz has over twenty years of experience in finance, corporate restructuring, banking, and executive management for both private and public companies.
- Since 2024, Mr. Steinmetz has served as the interim Chief Financial Officer of Focal Point Care, a private equity backed healthcare services company.
- Prior to his time at Focal Point Care, Mr. Steinmetz served as Chief Financial Officer of Vesta, a global financial technology firm.
- From 2017 to 2022, Mr. Steinmetz worked as a senior director at the consulting firm Alvarez & Marsal, LLP.
- Prior to his time at Alvarez & Marsal, LLP, Mr. Steinmetz served as Chief Financial Officer of Finjan Holdings, Inc., where he successfully guided the company through its transition to a publicly listed entity in 2013.
- Mr. Steinmetz began his career in investment banking at both Salomon Smith Barney and Goldman Sachs.
- Mr. Steinmetz holds a Bachelor of Science degree in finance from Yeshiva University and a Master of Business Administration from the University of Chicago's Booth Graduate School of Business.
- On May 26, 2026, Mr. Steinmetz and the Company entered into an employment agreement (the "Agreement").
Reported
Each of the Separation Agreements became effective as of April 29, 2026 (the "Effective Date") after the expiration of a statutory revocation period.
- 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").
- 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.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.