Sonendo Strengthens Leadership Team With Promotion of John McGaugh to Chief Operating Officer

August 20, 2025 at 16:15 PM EDT

Sonendo, Inc. (“Sonendo” or the “Company”) (OTC Pink: SONX), a leading dental technology company and developer of the GentleWave® System, today announced the promotion of John McGaugh to Chief Operating Officer. Mr. McGaugh previously held the position of Senior Vice President of Operations.

“Since Sonendo embarked on its strategic reset in early-2024, the Company has stabilized revenue, generated significant leverage in gross margin, and meaningfully lowered total operating expenses, adjusted EBITDA loss and cash burn,” stated Bjarne Bergheim, President and Chief Executive Officer of Sonendo. “John has been a significant contributor to all those improvements, and we expect he will continue to drive additional operating leverage as the Company continues to execute its plans to achieve profitability. John is a valuable member of the team, and I am excited to see him take on the role of Chief Operating Officer.”

In addition to his previous responsibilities overseeing quality, manufacturing, supply chain, and technical services operations, Mr. McGaugh now has oversight of Sonendo’s capital and consumables sales teams and commercial operations.

Mr. McGaugh has over 20 years overseeing global manufacturing operations. He joined Sonendo in May 2023 and has been instrumental in leading significant operational efficiencies with console assembly and procedure instrument margin contributions. Prior to his time at Sonendo, Mr. McGaugh served as a multi-site operational leader for Abbott Vascular. In addition to his experience at Abbott, Mr. McGaugh has held leadership roles at Boston Scientific and American Medical Systems.

About Sonendo

Sonendo is a commercial-stage medical technology Company focused on saving teeth from tooth decay, the most prevalent chronic disease globally. Sonendo develops and manufactures the GentleWave® System, an innovative technology platform designed to treat tooth decay by cleaning and disinfecting the microscopic spaces within teeth without the need to remove tooth structure. The system utilizes a proprietary mechanism of action, which combines procedure fluid optimization, broad-spectrum acoustic energy and advanced fluid dynamics, to debride and disinfect deep regions of the complex root canal system in a less invasive procedure that preserves tooth structure. The clinical benefits of the GentleWave System when compared to conventional methods of root canal therapy include improved clinical outcomes, such as superior cleaning that is independent of root canal complexity and tooth anatomy, high and rapid rates of healing and minimal to no post-operative pain. In addition, the GentleWave System can improve the workflow and economics of dental practices.

For more information about Sonendo and the GentleWave System, please visit www.sonendo.com. To find a GentleWave doctor in your area, please visit www.gentlewave.com.

Forward Looking Statements

This news release includes forward-looking statements (statements which are not historical facts) within the meaning of the Private Securities Litigation Reform Act of 1995. These statements include, but are not limited to, the Company’s ability to continue to drive additional operating leverage and/or execute its plans to achieve profitability, whether as a result of Mr. McGaugh or otherwise. You are cautioned that such statements are not guarantees of future performance and that our actual results may differ materially from those set forth in the forward-looking statements. Forward-looking statements are predictions, projections and other statements about future events that are based on current expectations and assumptions; speak only as of the date they are made; and, as a result, are subject to risks and uncertainties that may change at any time. Factors that could cause the Company’s actual results to differ materially from these forward-looking statements are described in detail in the “Risk Factors” section of the Company’s Annual Report on Form 10-K that was filed with the Securities and Exchange Commission on March 26, 2025. Such filings are available at www.sec.gov. The Company undertakes no obligation to publicly update or revise forward-looking statements to reflect subsequent developments, events, or circumstances, except as may be required under applicable securities laws. Readers are cautioned not to put undue reliance on forward-looking statements, and the Company assumes no obligation and does not intend to update or revise these forward-looking statements, whether as a result of new information, future events, or otherwise.