Jonathan Diaz Joins Whittlesey’s Growing Leadership Team

HARTFORD, Connecticut – July 20, 2026

Whittlesey, a leading assurance, advisory, tax, and technology firm, welcomes Jonathan J. Diaz, CPA, as its newest Tax Manager, joining the firm’s growing leadership team.

“We’re excited to welcome Jonathan to Whittlesey,” said Drew Andrews, Managing Partner and CEO. “He brings a strong background in audit and a thoughtful, client-focused approach that aligns well with our firm’s values and commitment to quality service.”

Jonathan brings more than 7 years of public accounting experience. He provides federal and state tax compliance services to clients across the consumer products, manufacturing, and professional services industries, helping businesses navigate complex tax requirements while supporting their long-term financial goals.

Jonathan earned a Bachelor of Science in Accounting from Southern Connecticut State University in New Haven, Connecticut. He is a member of the American Institute of Certified Public Accountants (AICPA) and the Connecticut Society of Certified Public Accountants (CTCPA).

About Whittlesey:

Founded in Hartford in 1961, Whittlesey is one of the largest regional CPA and consulting firms in New England. With offices in Connecticut and Massachusetts, we provide a comprehensive array of advisory, assurance, tax, and technology services to a broad range of businesses and individuals.

Media Contact:

Emma Van Dyke, Senior Digital Marketing Specialist
Whittlesey
280 Trumbull Street, 24^th Floor
Hartford, CT 06103-3509
evandyke@WAdvising.com
860.524.4484