X0306 4 2016-02-11 0 0001110805 NuStar Energy L.P. NS 0001314252 ROSIER WILLIAM GRADY 19003 IH-10 WEST SAN ANTONIO TX 78257 1 0 0 0 Common Units 2016-02-11 4 A 0 5000 26.1399 A 19000 I By Trust Common Units 5856 D The transaction was executed in multiple trades at prices ranging from $26.1399 to $26.14. The price reported above reflects the weighted average purchase price. Note that due to field restrictions in Table 1, Column 4, the last decimal places do not appear. The total weighted average purchase price is actually $26.139948. Upon request from the Securities and Exchange Commission, the issuer or a unitholder of the issuer, full information regarding the number of units purchased at each separate price will be made available. /s/ Michelle S. Miller, as Attorney-in-Fact for W. Grady Rosier 2016-02-12