NuStar Energy Investor Conference Presentation Deck

NuStar Strong Coverage + NuStar is Well-positioned in 2021... Lower Leverage + Simplified Structure/ Governance + No IDR Burden + Maximized Self- Funding NuStar Energy L.P. NYSE: NS Common Unit Price: $18.13 Distribution/CU/Year: • Yield (¹): •Market Cap(¹): Credit Ratings: ▸ Moody's: S&P: Fitch: Ba3 (Stable) BB- (Stable) BB- (Stable) $1.60 8.8% -$2 billion Enterprise Value: •Total Assets: ~$7 billion ~$6 billion ~10,000 1.6MMBPD •Pipeline Miles: •Pipeline Volumes (2): •Storage Capacity: ~72MMB Storage Throughput Volumes(2): 400MBPD 1. As of May 17, 2021 2. Average daily volume for the quarter ended March 31, 2021 6

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