News 2 min read

Withum Names Eighteen New Partners

Eighteen team members have been promoted to partner across Withum offices nationwide, joining the Firm’s corporate leadership and contributing to its continued growth and success.

Withum 2026 New Partner Class

Eighteen team members have been promoted to partner across Withum offices nationwide, joining the Firm’s corporate leadership and contributing to its continued growth and success.

Meet Our New Partners

Introducing Our 18 New Partners 

Withum leadership changes 2026

Leadership Transitions

A dynamic group of leaders will assume key roles across industry and service teams, regional offices and operational departments, effective July 1, 2026.

Learn More

Featured News

Read more
columbia-office-news-post
Withum’s Columbia Office Welcomes Greater Baltimore

Withum team members, clients and community leaders, including representatives from Howard County and the Central Maryland Chamber, came together to mark the official “door opening” on the new location. The ribbon-cutting ceremony highlighted the evening, which featured citations presented by community leaders welcoming Withum to the Columbia region and recognizing its strong ties to the…

Read more
Nadia Matthie
Nadia Matthie Appointed as Chair of the AICPA’s Employee Benefit Plans Expert Panel

The AICPA’s Employee Benefit Plans Expert Panel was formed to protect the public interest and agree on key plan issues by leveraging the knowledge of leaders in the employee benefit plan industry. Nadia’s deep expertise makes her a valuable asset to help further the panel’s mission as Chair of the group. Nadia has more than…

Read more
Chris-Passmore-featured-image 1
Chris Passmore Named Top Leader on Los Angeles Business Journal List for  Fourth Consecutive Year

As partner-in-charge of Withum’s Los Angeles office, Chris plays a pivotal role in the Firm’s growth on the West Coast. With nearly 25 years of experience in the profession, he specializes in assurance and business consulting services to emerging and middle-market companies. In addition to serving technology companies and professional services firms, Chris holds an advanced-level certificate in 401(k)…

Read more
Kerra-Diener-featured-image 1
Kerra Diener Named as 2026 Los Angeles Business Journal Top 100 Accountant

Kerra Diener is a partner in Withum’s Los Angeles, CA office, advising multinational and multistate businesses on complex federal and state tax matters. Known for her specialized technical depth, she helps corporate and private clients across industries, including industrial and consumer products, real estate, theatre and entertainment and cannabis, with expertise spanning tax planning, compliance, M&A and consulting. The accolade…