While working as an employee of a payment processing company, the 16-year-old Isaacman (who had already earned his
GED and gone to work full-time) identified what he saw as inefficiencies in the industry. In response, he launched United Bank Card in his parents' basement in Far Hills, New Jersey. At the time, it generally took merchants about one month to set up a payment system and merchants had to pay for their credit card readers and sign a lengthy application. As an alternative, Isaacman's new company cut the set-up time to one day, gave merchants free credit card readers and only required merchants sign a two-page application. In 2017, the company - then operating as the Lighthouse Network - acquired payment gateway provider Shift4 Corporation and rebranded itself as Shift4 Payments. an
E-commerce platform. In January 2021, Shift4 rebranded it as Shift4Shop. In March 2021, the company announced the acquisition of VenueNext, a provider of point-of-sale and payment products for stadiums, arena, and other entertainment venues. A year later, the company announced it acquired
Finaro. In February 2025, the company announced the acquisition of
Global Blue for $1.5 billion. In March 2025, Isaacman announced his intention to resign as CEO upon his confirmation as
administrator of
NASA, following his nomination by
Donald Trump the previous January. ==Services==