The spokesman reiterates Nakajima qualifications for the role. “Nakajima has held a leadership role since joining the Rockefeller Group in 2011. He remains focused on implementing the company's strategy and advancing its objectives, in concert with a very deep bench of senior executives across the organization.”

Meanwhile, Hackett departure from Rockefeller appears to be amicable. He informed Rockefeller of his desire to return to law and the firm has conferred on him the title of CEO Emeritus, he reports. Says Nakajima in a statement, “The Rockefeller Group broadened its platform by service and geography during Kevin's tenure. We thank him for his many contributions and congratulate him on this next phase of his career.”

Hackett's past experience leaves him poised for his next professional chapter. He previously served as senior real estate partner at several major law firms, including Shearman & Sterling. In fact, he tells GlobeSt.com, “I'm not too rusty and the rust can be easily worn off. I don't think I've forgotten much.”

Rockefeller executives appear to have faith in that—they made Proskauer their principal law firm in the wake of Hackett joining the firm. Other potential clients are likely to follow Rockefeller's path to Proskauer's doors, Hackett notes. “I have a rather widespread following in the real estate industry, other clients will come along as well.”

He built his reputation, in part, by boosting the firm's development efforts across the country—rather than just in New York—and by greatly expanding Rockefeller's investment management efforts after spearheading the acquisition of Europa Capital, a London-based firm.

Hackett has built up his credibility with industry organizations too: he is a governor of REBNY and of the ULI Foundation, a participating member of the Partnership for New York City and a member of the Real Estate Roundtable.