David Enholm's departure as Chief Financial Officer of Zone Frontier Inc. was reported, effective September 11, 2026; the filing names no successor. As of November 6, 2026, Zone Frontier Inc. has reported 4 leadership change filings to the SEC under Item 5.02 of Form 8-K, from May 28, 2026 to October 29, 2026, naming 1 appointment and 2 departures (Form 8-K, September 11, 2026).
Zone Frontier Inc. announced the departure of its Chief Financial Officer on Sep 11. 30 companies changed executives this week.
Companies that just changed executives, and the new executive. Before you unlock: the company, the change and what is inside. After: the executive named with their role, how to reach the company, and a person's email only when we found one.
| John Hancock Comvest Private Income Fund | named a new Chief Financial Officer | |
| Bain Capital Specialty Finance, Inc. | named a new Director | |
| Azora Therapeutics, Inc. (DE) | named a new Director | |
| LASE Corp. | named a new Director | |
| Century Communities, Inc. | named a new Executive Chairman |
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Key facts
- · In / out: Reported · Person: not named in the filing · 8-K, 2026-10-29
- · In / out: Out · Person: David Enholm · Role: Chief Financial Officer · Effective: 2026-09-11 · 8-K, 2026-09-11
- · In / out: Reported · Person: not named in the filing · 8-K, 2026-07-07
- · In / out: Out · Person: David Enholm · Role: Director · 8-K, 2026-05-28
Zone Frontier Inc. reported changes in 4 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-05-28 to 2026-10-29. They name 2 people, with 1 appointment and 2 departures. Every row below is cited to the filing it comes from, and this page adds each new change as Zone Frontier Inc. files it.
Also on the record for Zone Frontier Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| November 3, 2026 | Stake report, Schedule 13G, by Chris Kostopoulos | 5.66% of the class | 5%+ stakes | Source |
| August 14, 2026 | Stake report, Schedule 13G/A, by MMCAP International Inc. SPC | 6.3% of the class | 5%+ stakes | Source |
| July 31, 2026 | Stake report, Schedule 13G/A, by Vanguard Capital Management | 4.87% of the class | 5%+ stakes | Source |
| May 11, 2026 | Stake report, Schedule 13G/A, by MMCAP International Inc. SPC | 8% of the class | 5%+ stakes | Source |
| April 29, 2026 | Stake report, Schedule 13G, by Vanguard Capital Management | 5.65% of the class | 5%+ stakes | Source |
| February 13, 2026 | Stake report, Schedule 13G/A, by MMCAP International Inc. SPC | 9.1% of the class | 5%+ stakes | Source |
| February 11, 2026 | Stake report, Schedule 13G/A, by Ayrton Capital LLC | 0.37% of the class | 5%+ stakes | Source |
| November 18, 2025 | Stake report, Schedule 13G, by MMCAP International Inc. SPC | 5.5% of the class | 5%+ stakes | Source |
| November 13, 2025 | Stake report, Schedule 13G, by Ayrton Capital LLC | 5.45% of the class | 5%+ stakes | Source |
| September 4, 2025 | Stake report, Schedule 13D/A, by Ansari Mohammad Jawad | 11.8% of the class | 5%+ stakes | Source |
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More on Zone Frontier Inc. and the records around it.
Zone Frontier Inc. elsewhere on the record
- 5%+ stake filings Nov 2026
- Who owns it
Companies that share a holder
- Ayrton Capital LLC also filed stake reports on 31 other companies: Bluejay Diagnostics, Inc. (Aug 2026), BTC Digital Ltd. (Aug 2026), DEFSEC Technologies Inc. (Aug 2026)
- MMCAP International Inc. SPC also filed stake reports on 52 other companies: BHAV Acquisition Corp II (Nov 2026), Haymaker Acquisition Corp V (Sep 2026), Thunder Bridge Capital Partners V, Ltd. (Aug 2026)
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-10-29 | Reported | not named in the filing | 8-K, 2026-10-29 | ||
| 2026-09-11 | Out | Chief Financial Officer | 2026-09-11 | 8-K, 2026-09-11 | |
| 2026-07-07 | Reported | not named in the filing | 8-K, 2026-07-07 | ||
| 2026-05-28 | Out | Director | 8-K, 2026-05-28 | ||
| 2026-05-28 | In | Chief Executive Officer | 8-K, 2026-05-28 |
Who leads Zone Frontier 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 Financial Officer: David Enholm, departure reported, effective 2026-09-11 (filed 2026-09-11). No successor is named in these filings.
- Chief Executive Officer: Tyler Hassen, appointed (filed 2026-05-28).
- Director: David Enholm, departure reported (filed 2026-05-28). No successor is named in these filings.
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Find candidates like Chief Financial Officer at Zone Frontier Inc.Every change, in the filing's words
Reported
Neither departure was the result of any disagreement with the Company on any matter relating to its operations, policies or practices.
- As previously disclosed, on October 7, 2026, Zone Frontier Inc. f/k/a CleanCore Solutions, Inc. (the "Company") completed the sale (the "Closing") of substantially all of the assets of its legacy aqueous ozone cleaning products business (the "Cleaning Products Business") to Sanzonate Holdings LLC (the "Buyer") pursuant to an Asset Purchase Agreement, dated October 7, 2026.
- In connection with the sale of the Cleaning Products Business, effective October 23, 2026 (the "Separation Date"), the employment of Travis Buchanan, the Company's President, and Gary Hollst, the Company's Chief Revenue Officer, terminated without cause, and each of Messrs. Buchanan and Hollst resigned from all officer, director, committee and other positions held with the Company and its subsidiaries and affiliates.
- The Company eliminated both roles, each of which related solely to the Cleaning Products Business and neither of which had responsibility for the Company's data center development business.
- On October 23, 2026, the Company and Mr. Buchanan entered into a Severance and Release Agreement (the "Buchanan Agreement").
Departing: David Enholm, Chief Financial Officer, effective 2026-09-11
On September 8, 2026, David Enholm notified the Board of Directors (the "Board") of Zone Frontier Inc. f/k/a CleanCore Solutions, Inc. (the "Company") of his resignation as Chief Financial Officer, effective September 11, 2026, in connection with his retirement.
Reported
If Mr. Enholm's service terminates for any other reason, any unvested RSUs will be automatically forfeited.
- Side Letter Agreement and RSU Agreement with David J. Enholm On June 30, 2026, CleanCore Solutions, Inc. (the "Company") entered into a Side Letter Agreement (the "Side Letter") with David J. Enholm, the Company's Chief Financial Officer, amending certain compensation terms of Mr. Enholm's existing Employment Agreement dated March 27, 2023, as amended (the "Employment Agreement").
- Concurrently, the Company and Mr. Enholm entered into a Restricted Stock Unit Award Agreement (the "RSU Agreement") pursuant to the Company's 2022 Equity Incentive Plan (the "Plan").
- Pursuant to the Side Letter, effective July 1, 2026, Mr. Enholm's annual base salary was reduced from $75,000 to $62,400, payable in accordance with the Company's normal payroll practices.
- The salary adjustment was made voluntarily at Mr. Enholm's request, and Mr. Enholm has waived any claim that such reduction constitutes a breach of the Employment Agreement or "good reason" for resignation thereunder.
- In addition, Mr. Enholm waived any and all rights to receive a cash payment for accrued or unused paid time off upon any future termination of employment with the Company.
- In consideration of the salary adjustment, the PTO waiver, and Mr. Enholm's continued service to the Company, the Company granted Mr. Enholm 80,000 restricted stock units (the "RSU Award") under the Plan, pursuant to the RSU Agreement.
Departing: David Enholm, Director
On May 21, 2026, David Enholm notified the Board of Directors (the "Board") of CleanCore Solutions, Inc. (the "Company") of his resignation as a member of the Board, effective immediately.
Appointed: Tyler Hassen, Chief Executive Officer
On May 21, 2026, the Board, upon the recommendation of the Nominating and Corporate Governance Committee of the Board (the "Nominating Committee"), appointed Tyler Hassen, the Company's Chief Executive Officer, to fill the vacancy on the Board created by Mr. Enholm's resignation, effective immediately.
- Mr. Enholm's resignation was not the result of any disagreement between Mr. Enholm and the Company on any matter relating to the Company's operations, policies, or practices.
- Mr. Enholm will continue to serve as the Company's Chief Financial Officer.
- Mr. Hassen will serve as a director until his successor is duly elected, qualified, and appointed, or until such earlier resignation, removal, or disqualification from such position.
- Mr. Hassen, age 43, has served as the Company's Chief Executive Officer since March 16, 2026.
- Mr. Hassen is the founder of Stable Crest Holdings, a Houston-based investment firm, a position he has held since November 2025.
- Previously, Mr. Hassen served as Acting Assistant Secretary for Policy, Management & Budget and Senior Advisor at the U.S. Department of the Interior under Secretary Doug Burgum from January 2025 to November 2025.
- From 2008 through January 2025, Mr. Hassen served in various leadership roles at Basin Holdings, a global diversified oilfield and industrial manufacturing and services company, including as Chief Executive Officer of Basin Industries LLC (2021-2025), Chief Executive Officer of Basin Energy (2020-2025), and Chief Financial Officer of Basin Holdings (2013-2016).
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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.