NuStar Energy Investor Conference Presentation Deck

HI 23% of Total DOT Pipeline Miles RESPONSIBLE OPERATIONS: ASSURING SAFETY AND RELIABILITY THROUGH INSPECTION In 2020, We Continued to Execute on Our Rigorous Inspection Program Across Our Assets Inspected Over 2,000 Miles of Pipeline Inspected Over 250 Water- Crossings NuStar Completed Over 2,000 Aerial Inspections & Over 350,000 Miles Responsibly Resilient 20,000+ LDAR (Leak detection and repair) Component Inspection Program 71 API Internal & 369 External Inspections Nearly 300 Agency Inspections 26% of Total Barrels of Storage Statistics are for 2020 unless otherwise noted 17

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