What Does Withum Do?

Total employees2543
HeadquartersEast Hanover
Founded1974

WithumSmith+Brown, PC (Withum) is a nationally recognized public accounting and advisory firm. With a forward-thinking, technology-driven approach, Withum provides a comprehensive suite of services including audit, tax, advisory, and digital transformation solutions to a diverse clientele ranging from privately-held businesses and high-net-worth individuals to publicly traded companies and not-for-profit organizations. The firm is committed to delivering innovative solutions and exceptional client service, fostering a culture of 'The Withum Way' which emphasizes passion, innovation, community, and excellence.

Where Is Withum's Headquarters?

Withum officeWithum officeWithum officeWithum office
*Images sourced via web search. Rights belong to original owners

HQ Function

Serves as the central administrative and operational hub for the firm, coordinating national strategies, firm-wide initiatives, and providing support for its numerous offices.

Notable Features:

Modern office facilities designed to foster collaboration and innovation, equipped with advanced technology infrastructure to support its advisory and digital services.

Work Culture:

The East Hanover office embodies 'The Withum Way,' characterized by a dynamic, collaborative, and client-focused environment. It promotes professional growth, teamwork, and a commitment to community involvement.

HQ Significance:

As the National Office, it plays a pivotal role in driving the firm's growth, maintaining service quality standards, and shaping the overall corporate culture.

Values Reflected in HQ: The headquarters reflects Withum's values of innovation, client service excellence, and fostering a supportive environment for its team members.

Location:

While Withum's direct offices are primarily located within the United States, the firm possesses a significant global reach through its independent membership in HLB International. HLB is a dynamic global network of independent advisory and accounting firms, with presence in approximately 157 countries. This affiliation allows Withum to seamlessly serve clients with international operations, providing access to local expertise and insights across the globe for services such as international tax, transfer pricing, cross-border M&A, and global compliance.

Street Address:

One Mayfair Road

City:

East Hanover

State/Province:

NJ

Country:

USA

Where Else Does Withum Operate Around the World?

New York, NY, USA

Address: 1411 Broadway, 9th Floor, New York, NY 10018

To cater to the extensive and complex needs of businesses and high-net-worth individuals in one of the world's leading financial centers, leveraging local expertise and industry specialization.

Orlando, FL, USA

Address: 200 S Orange Ave, Suite 1200, Orlando, FL 32801

To support the growing business community in Central Florida, providing localized expertise and access to Withum's national resources.

Woburn, MA, USA

Address: 200 Presidential Way, Suite 320, Woburn, MA 01801

To provide specialized accounting and advisory services to the innovative and established businesses in the Boston metropolitan region and broader New England.

Irvine, CA, USA

Address: 200 Spectrum Center Drive, Suite 1000, Irvine, CA 92618

To support the vibrant business ecosystem in Southern California, offering specialized advisory services and tapping into the region's innovation hubs.

Buying Intent Signals for Withum

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Withum? Meet the Executive Team

As of April 2025, Withum' leadership includes:

Pat Walsh - Managing Partner and CEO
Bill Hagaman - Chairman Emeritus
Tom Suarez - Partner, Market Leader
James C. Bourke Jr. - Partner, Growth Leader
Theresa Richardson - Partner, Chief Talent Officer
Shawn R. Gillon - Partner, Chief Operating Officer

Who's Investing in Withum?

Withum has been backed by several prominent investors over the years, including:

WithumSmith+Brown is a privately held public accounting and advisory firm, structured as a partnership. It is not publicly traded and does not have external equity investors in the traditional sense (e.g., venture capital, private equity firms). Its capital and ownership reside with its partners.

What Leadership Changes Has Withum Seen Recently?

Hire20
Exits0

The most significant executive change in the last 12-18 months was the transition of Pat Walsh to Managing Partner and CEO, effective July 1, 2023, succeeding Bill Hagaman. The firm also announced a substantial class of new partners and principals in January 2024, underscoring its growth and leadership development. Specific numbers for all executive-level hires/exits across the firm are not typically disclosed publicly in a consolidated manner beyond these major announcements.

New Appointments:

Pat Walsh, Pat Walsh appointed as new Managing Partner and CEO.
Multiple (20 individuals promoted), 20 individuals promoted to Partner/Principal roles, strengthening the firm's leadership.

What Technology (Tech Stack) Is Used byWithum?

Discover the tools Withum uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Withum Email Formats and Examples

WithumSmith+Brown (Withum) commonly uses a few standard email formats for its employees. The most prevalent formats are typically a combination of the employee's first initial and last name, or first name and last name, followed by '@withum.com'.

Common formats include [first_initial][last]@withum.com (e.g., jsmith@withum.com) and [first].[last]@withum.com (e.g., john.smith@withum.com).

Format

jsmith@withum.com

Example

85%

Success rate

What's the Latest News About Withum?

BusinessWire • November 1, 2023

WithumSmith+Brown Expands Its Presence in the Pacific Northwest with The Vesta Group Merger

Withum announced its merger with The Vesta Group, a tax and wealth advisory firm based in Lake Oswego, Oregon. This strategic combination, effective November 1, 2023, expands Withum's footprint in the Pacific Northwest and enhances its advisory service offerings....more

Cision PR Newswire / Withum.com • January 8, 2024

WithumSmith+Brown Announces 2024 Partner and Principal Promotions

WithumSmith+Brown, PC (Withum) announced the promotion of 20 team members to Partner and Principal, effective January 1, 2024. These promotions span various service lines and industries, reflecting the firm's growth and commitment to developing talent from within....more

Withum.com / Accounting Today • July 1, 2023

WithumSmith+Brown: Pat Walsh Succeeds Bill Hagaman as Withum’s Managing Partner and CEO

Withum announced that Pat Walsh has taken office as the firm's Managing Partner and CEO, effective July 1, 2023. He succeeds Bill Hagaman, who transitioned to the role of Chairman Emeritus after leading the firm for 13 years and overseeing significant growth....more

Highperformr's free tools for company research

Explore Employees by Region or Country

See where a company’s workforce is located, by country or region.

View Funding Details

View past and recent funding rounds with amounts and investors.

Understand Revenue Insights

Understand company revenue estimates and financial scale.

Track Active Job Openings

Track active roles and hiring trends to spot growth signals.

Review Product and Offerings

Discover what a company offers—products, platforms, and solutions.

Get SIC or NAICS Codes

Get the company’s official SIC and NAICS classifications.

Analyze Website Traffic Trends

Analyze visitor volume, engagement, and top traffic sources.

Discover Social Profiles and Engagement

Explore LinkedIn, Twitter, and other active social profiles.

Identify Top Competitors

Identify top competitors based on similar business traits.

Research and Discover Companies with Highperformr — Smarter, Faster

Explore companies in depth — from the tech they use to recent funding, hiring trends, and buyer signals — all in one powerful view.

Highperformr AI helps you surface the right accounts and enrich your CRM with verified company and contact insights, so your teams can prioritize and engage faster.

  • Track intent signals to find buyers who are actively in-market
  • Enrich contacts and companies instantly, no need to switch tools
  • Automate workflows to stay ahead of every change
  • Connect your CRM & tools for seamless data sync and activation

Thousands of companies, including Withum, are just a search away.