The general counsel of Amazon.com Inc. and four other executives of the online retail giant made individual contributions in May to the reelection campaign of the congressman who is leading a subcommittee antitrust investigation into large technology companies.

First reported by CNBC, general counsel David Zapolsky made a donation of $2,800 May 21 to Rep. David Cicilline, D–Rhode Island, chairman of the House Judiciary Subcommittee on Antitrust, Commercial and Administrative Law.