FTC asks Amazon and iRobot for additional information and documentary materials relating to their deal

The Federal Trade Commission has requested additional information and documentary materials from Amazon.com Inc. AMZN, -1.52% and Roomba parent iRobot Corp. IRBT, -0.43% relating to their planned merger, according to a regulatory filing on Tuesday. The companies expect to promptly respond to the request, which will extend the waiting period imposed by the Hart-Scott-Rodino Antitrust Improvements Act until 30 days after they have complied. Amazon announced plans to acquire iRobot for $61 a share in cash in August, in a deal that values the company at about $1.7 billion, including debt. iRobot shares were down 1.4% premarket and have fallen 12% in the year to date, while the S&P 500 SPX, -1.20% has fallen 18%.