Grassi Strengthens Presence in Massachusetts with Integration of Anstiss & Co.
New York, NY, January 30, 2025 – Grassi, a leading provider of advisory, tax, and accounting services, today announced the strategic combination of Anstiss & Co., P.C., a Massachusetts-based accounting, tax and consulting firm, further strengthening Grassi’s presence in the region.
Founded in 1964, Anstiss & Co., a top-30 firm in Massachusetts, enhances Grassi’s depth of experience, providing services to family-owned businesses, nonprofits and high-net-worth individuals.
“Our firms share a mutual commitment to client service excellence and our people,” said Louis C. Grassi, Grassi’s CEO and founder. “As we continue to expand our footprint, we prioritize aligning with firms that share our vision for delivering tailored client experiences and growth-focused solutions. This represents another step forward in Grassi’s commitment to being wherever our clients need us most.”
“This is an exciting next chapter for our team,” said Raymond Anstiss, Jr., Managing Partner of Anstiss. “Joining Grassi will enable us to deliver even greater value to our clients and provide our team members with opportunities for growth and development on a greater scale, all while preserving the strong relationships and personalized service that are the foundation of our firm.”
Six partners and 50 professionals and staff will join Grassi from Anstiss. Raymond Anstiss, Jr., will remain the Managing Partner of the Chelmsford office and assume the new position of Grassi’s Boston Market Leader. Both firms will maintain the high standards of service and technical excellence expected by their clients. The unified team will operate under the Grassi brand.
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For more information, contact:
Beth More
Sr. Marketing Director
