On May 28, 2009, he announced his resignation and subsequently left state government service to become a visiting professor at New York University's Stern School of Business.
Dinallo graduated from Vassar College in 1985 with a major in philosophy, and earned a master's degree from Duke University's Sanford School of Public Policy in 1987.
In his prior role at Debevoise & Plimpton, Dinallo represented clients throughout the financial services sector and provides counseling on a broad range of matters, including government and internal investigations, enforcement actions, litigation and compliance matters, and regulatory and strategic legal advice on mergers and acquisitions and other corporate transactions.
For his work in the New York Insurance Department, Dinallo was named one of the 25 "Dealmakers of the Year" in 2009 by The American Lawyer law magazine, which stated that although he "may have a less-than-inspiring job title...his impact has been impressive.
He chaired the Blue Ribbon commission charged with reviewing and modernizing New York's financial services regulatory structure, an effort largely derailed by the Great Recession of 2008 to 2009.
A member of the Partners Group, the company's global executive management committee, he was the primary legal advisor on value creation matters.
His responsibilities included supervising General Counsels, Global Compliance and the Internal Audit Department, as well as implementing corporate strategies, policies and procedures to ensure the effective management of regulatory and litigation matters.
He designed and led top-to-bottom reviews of conflicts and business practices, achieving a major shift in the firm-wide regulatory strategy.
Among other requirements levied by the court, the firm was forced to disclose in analysts' reports when it was seeking investment-banking business from companies whose stocks were being rated.