Kanodia began tipping Ahmed and another friend, allowing them to make more than $1 million making trades before the proposed $2.5 billion deal was announced in June 2013, authorities said.
The merger was abandoned that December amid an acrimonious legal battle between the companies.
Kanodia has pleaded not guilty and is scheduled to face trial on Sept. 19.
The cases in the U.S. District Court, District of Massachusetts, are U.S. v. Ahmed, No. 16-cr-10154, and U.S. v. Kanodia et al, No. 15-cr-10131.