Tock, which launched in Chicago in 2014 ... has grown five fold since AmEx purchased the company. AmEx also announced Friday it would buy Rooam, a contactless payment platform that is used heavily ...

Tock offers reservation ... additional value to small businesses using American Express Cards. AmEx has also agreed to buy technology company Rooam, which runs mobile payments, ordering and ...

American Express buys Tock restaurant booking platform for $400 million The all-cash deal, unveiled on Friday, will build upon AmEx's acquisition of online restaurant reservation platform Resy in ...