Merrill Lynch & Co. "secretly" moved up the date it awarded bonuses for 2008 and richly rewarded its executives despite billions of dollars in losses, giving bonuses of $1 million or more apiece to nearly 700 employees, New York Attorney General Andrew Cuomo said.

In a letter to House Financial Service Committee Chairman Barney Frank, (D., Mass.), Mr. Cuomo said the Wall Street firm awarded $3.6 billion in bonuses to more than 39,000 employees before its Jan. 1 purchase by Bank of America Corp., including more than $121 million...