 ALLENTOWN, Pa. LAS VEGAS--BUSINESS WIRE--- FOUR--Shift4 Payments NYSE: FOUR, the leader in integrated payment processing solutions, announced today preliminary financial results for the three months ended June 30, 2021. For the second quarter 2021, Shift4 Payments expects to report: End-to-End Payment Volume of approximately 11,780 million to 11,820 million Gross Revenue of approximately 345 million to 350 million Gross Revenue Less Network Fees of approximately 132 million to 136 million N 