 SAN ANTONIO--BUSINESS WIRE--NuStar Energy L.P. NYSE: NS today announced that it will host a conference call on Thursday, August 4, 2022 at 9:00 a.m. Central Time to discuss the second quarter 2022 earnings results, which will be released earlier that day. Persons interested in QA participation may pre-register for the conference call and obtain a dial-in number and passcode at Persons interested in listen-only par 