(Reuters) – James McDonald, of investment management firm Rockefeller & Co, committed suicide on Sunday in Massachusetts, the Wall Street Journal said, citing people familiar with the matter.
According to the paper, Barclay McFadden, who identified himself as a friend of McDonald's family, said James McDonald "took his own life." McDonald was also a board member of NYSE Euronext.
No one at Rockefeller & Co was immediately available for comment.
The paper said McDonald is believed to have died in New Bedford but the circumstances surrounding his death were unclear.
Rockefeller & Co's chief operating officer and, Austin Shapard, has assumed day-to-day leadership of the investment firm, the Journal said, citing company spokesman Joseph Kuo.
The firm, which started off as a New York family office established by, was incorporated in 1979 and became an investment adviser in 1980, according to the company's website.
(Reporting by Santosh Nadgir in Bangalore; Editing by Greg Mahlich)