Eleanor “Ellie” Baker, managing principal of Portland-based accounting and consulting firm Baker Newman Noyes, plans to retire in June and will be succeeded by company principal and Director of Audit Carl Chatto, the firm said Monday.

Baker co-founded Baker Newman Noyes 20 years ago and has been an accounting professional for nearly four decades. She earned a bachelor’s degree from the University of Maine, a law degree from the University of Maine School of Law, and a postgraduate law degree in taxation from Boston University School of Law, according to the firm’s website. She also holds the Personal Financial Specialist designation.

“I’m honored to have the opportunity to see (the firm) celebrate its 20th anniversary this year and know that the firm will be in the hands of a great leadership team,” Baker said in a news release. “Carl is an exemplary leader bringing all of the qualities that the firm is seeking. He really understands how the firm operates. I am confident in his ability to advance our strategy while growing our service offerings to best meet our clients’ needs in this ever-changing environment.”

Chatto is based at the firm’s headquarters in Portland, where he provides audit and advisory services to a broad spectrum of public and private clients, the firm said. This past year, he was instrumental in the company’s merger with Shatswell MacLeod & Co.’s external audit and tax practices, it said, and he continues to support the integration efforts.

A graduate of Bentley University, Chatto is involved in several professional and community organizations including the Maine Historical Society as trustee on the Finance and Investment Committee and has been appointed to the Maine Board of Accountancy.

Chatto will be promoted to managing principal Jan. 1, six months before Baker plans to retire. The two will work together during that time to ensure a smooth transition, the firm said.

“It is an honor to take on this position,” Chatto said in the release. “I am eager to respond to the evolving needs of our clients, create new opportunities for our professionals and continue the legacy of community giving which Ellie has helped build over the last 20 years.”