Los Angeles, California — MGO CPA (MGO) is pleased to announce that three of the firm’s leaders have been named Partner. Scott Diem, Eric Gnospelius, and Justin Zucker assumed their new leadership positions, effective January 1, 2026.
“Scott, Eric, and Justin embody what it means to be where our clients and our people need us, when they need us,” said Kevin O’Connell, CEO and Managing Partner. “They lead with accountability, clarity, and care, which means they show up at critical moments and ceaselessly deliver thoughtful solutions that help our clients move forward with confidence. Their promotions reflect the impact they’ve made and the leadership we continue to invest in as we grow.”
Scott Diem is an Assurance Partner focused on state and local government assurance and consulting. With a career that began at MGO in 2008, Scott supports governmental organizations through complex audits and advisory engagements, helping them meet critical reporting and issuance deadlines with confidence. He is known for his collaborative approach, technical precision, and ability to translate complex accounting and operational challenges into clear, actionable guidance. Scott works closely with stakeholders across departments to improve efficiency, strengthen communication, and enhance organizational coordination. He also serves as a Board Member of the Association of Governmental Accountants (AGA) Silicon Valley Chapter, supporting education on timely and relevant issues impacting governmental entities.
Eric Gnospelius serves as Chief People Officer and now Partner, leading the firm’s people strategy with more than 20 years of experience across organizational development, learning and development, performance management, compensation, talent acquisition, and succession planning. Throughout his career, Eric has successfully designed and implemented strategic and corporate development initiatives that strengthen organizational health and position firms for long-term success. His leadership focuses on building high-performing teams, cultivating strong leadership pipelines, and creating an employee experience that empowers professionals to thrive and deliver exceptional client service.
Justin Zucker is an Assurance Partner focused on beverage, technology, and biotech companies within the consumer products and manufacturing and distribution sectors. With experience guiding both public and private companies through IPOs, business combinations, SOX 404(a), and SEC reporting, Justin brings a deep understanding of large-scale business operations and regulatory complexity. Known for his enthusiastic, positive energy and client-first approach, he combines technical experience with a commitment to delivering a high-quality engagement experience. Justin began his career in 2009 at Deloitte and within industry, giving him a well-rounded perspective on the challenges faced by growing businesses.
These promotions reflect MGO’s continued investment in leadership that strengthens the firm’s culture, deepens client relationships, and supports long-term, sustainable growth.
for new ways to more holistically advise his clients on business, tax and financial planning matters.