NuStarEnergyL_P_NYSE_NS_202310-K.pdf

1、Table of ContentsUNITED STATES SECURITIES AND EXCHANGE COMMISSIONWashington,D.C.20549FORM 10-K(Mark One)ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31,2023OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES E

2、XCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-16417NuStar Energy L.P.(Exact name of registrant as specified in its charter)Delaware 74-2956831(State or other jurisdiction of incorporation or organization)(I.R.S.Employer Identification No.)19003 IH-10 WestSan Antonio,

3、Texas 78257(Address of principal executive offices)(Zip Code)Registrants telephone number,including area code(210)918-2000Securities registered pursuant to Section 12(b)of the Act:Title of each classTrading Symbol(s)Name of each exchange onwhich registeredCommon unitsNSNew York Stock Exchange8.50%Se

4、ries A Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred UnitsNSprANew York Stock Exchange7.625%Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred UnitsNSprBNew York Stock Exchange9.00%Series C Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Uni

5、tsNSprCNew York Stock ExchangeSecurities registered pursuant to 12(g)of the Act:None.Indicate by check mark if the registrant is a well-known seasoned issuer,as defined in Rule 405 of the Securities Act.Yes No oIndicate by check mark if the registrant is not required to file reports pursuant to Sect

6、ion 13 or Section 15(d)of the Act.Yes o No Indicate by check mark whether the registrant(1)has filed all reports required to be filed by Section 13 or 15(d)of the Securities Exchange Act of 1934 during thepreceding 12 months(or for such shorter period that the registrant was required to file such re