The report's unnamed sources said the Google executives have hired a top Washington law firm to prepare for the depositions. The firm, Williams & Connolly LLP, represented President Bill Clinton, former Federal Reserve Chairman Alan Greenspan, and the late Senator Edward Kennedy, according to Bloomberg.
Google declined to comment on the depositions but did offer a statement.
"We are happy to explain our business to regulators and answer any questions they may have," a representative wrote in an e-mail to CNET.
The FTC's examination of market power in Google's search advertising business picked up last year when the commission decided to serve civil subpoenas for the investigation. The probe included investigators seeking testimony from Apple regarding its iOS search deal with Google.