Withum Acquires IPA 200 Firm

Expanding its footprint in New England, Princeton, N.J.-based IPA 100 firm Withum (FY22 net revenue of $425.3 million) is merging in Braintree, Mass.-based IPA 200 firm O’Connor & Drew (FY21 net revenue of $22.1 million).

“O’Connor & Drew’s people-first culture blends seamlessly with ours,” says Withum MP and CEO Pat Walsh. “Our combined teams share the vision of providing best-in-class, innovative solutions for our clients’ growth and success.”

Founded in 1949, O’Connor & Drew provides a wide range of accounting, tax and advisory services to a diverse clientele, including automobile dealerships, higher education institutions, employee benefit plans, manufacturers, distributors, governmental entities and non-profit organizations. As part of the deal, the firm’s 18 partners and approximately 110 team members will join Withum and remain at their locations in Braintree and Winchester, Mass.

“Our clients will now have direct access to a larger network of national and international resources, deeper technical expertise and specialized knowledge in additional service areas,” says O’Connor & Drew managing principal Mark Dow. “Our existing offices in Braintree and Winchester will further enhance Withum’s current Northeast presence and the values that have been the central focus of our business will remain as we continue to service our clients under the Withum brand.”


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