Top 75 accounting firm Sax has acquired Owen J. Flanagan & Co., an accounting firm based in New York City, effective Jan. 22.
Financial terms of the deal weren’t disclosed.
This is Parsippany, NJ-based Sax’s second M&A transaction of 2026. The firm said Jan. 7 that it acquired Scheidel, Sullivan & Lanni CPA, a Ramsey, NJ-based accounting and advisory firm, while its subsidiary, Sax Wealth Advisors, acquired Sierra Financial Advisors, SSL’s wealth management arm, effective Jan. 4.
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Sax said it now has 73 partners, 432 total employees, and over $4.6 billion in assets under management, with a presence across five offices in New Jersey, New York, and Mumbai, India, as well as a remote workforce spanning 27 U.S. states.
The acquisition of OJF is also Sax’s fourth M&A deal since last year’s minority investment from private equity firm Cobepa, intended to accelerate the accounting firm’s strategic expansion, capabilities, and innovation.
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Sax said the deal with OJF strengthens its capabilities across attest, tax, consulting, and advisory services while preserving the personalized client service that has defined OJF for nearly five decades.
“This acquisition reflects our commitment to growth while staying true to our values of respect, integrity, commitment, excellence, and stewardship,” Sax CEO Joseph Damiano said in a statement “Owen J. Flanagan & Co. has built an outstanding legacy of trust and excellence over nearly 50 years, and their culture aligns seamlessly with ours. We’re thrilled to welcome their team into the Sax family.”
Founded in 1977, OJF has deep expertise in auditing and accounting, serving a wide range of clients—from tax-exempt organizations, including private foundations and public charities, to for-profit businesses, high-net-worth individuals, estates, and trusts.
“Since 1977, our mission has been to provide the highest level of service with personal attention and care. Partnering with Sax ensures that our clients will benefit from expanded resources and expertise while continuing to receive the same trusted guidance from the people who know them best,” said OJF partner John Corcoran.
OJF partner Kevin Sunkel added, “This is an exciting new chapter for our firm, our clients, and our team. By joining with Sax, we are preserving the close-knit relationships and continuity our clients value while enhancing our ability to serve their evolving needs well into the future.”
Joe Tarasco of Accountants Advisory Group advised both parties on the transaction.
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