NuStar Energy Investor Conference Presentation Deck

NuStar NuStar's Governance and Risk Management Provides Assurance That We are Aligned With Our Investors' Interests... No IDRs NS Board of Directors 78% Independent Directors Audit Committee Sustainability Committee NS Management 100% Attendance for 2020 Board & Committee Meetings Annual Unitholder Meetings Nominating, Governance & Conflicts Committee Governance, Ethics & Compliance Committee 11% Women Compensation Committee Majority of Executive Officers' Compensation Tied to Performance and Unit Returns Cyber Risk Governance Committee Financial Reporting & Disclosure Committee 13

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