VeriFone Systems Inc. on Monday named Citigroup executive Paul Galant as its chief executive, ending a six-month quest for a permanent top executive. Galant replaces interim chief executive Richard McGinn, who assumed that role in March when long-time chief executive Douglas G. Bergeron left the San Jose, Calif.-based point-of-sale terminal …

ACI Worldwide Inc.’s $109 million deal to buy Official Payments Holdings Inc. is a bid to grow its transaction volume and pairs well with its January purchase of Online Resources Corp., analysts suggest. Official Payments is a processor that specializes in online payments to government entities. ACI Worldwide is paying …