A bevy of large law firms stand to reap some of the $261 million in legal fees incurred by Anheuser-Busch InBev SA/NV and SABMiller plc as a result of their $106 billion beer industry megamerger.

The windfall comes a month after the U.S. Department of Justice cleared the union between AB InBev and SABMiller, with some conditions. Total professional advisory fees from the landmark transaction are nearing $2 billion, according to various news reports and a scheme document provided by SABMiller to shareholders, and law firms are poised to collect $261 million—or about 13 percent—of that amount.