Investor Presentaiton

Liquidity and Capital Structure MasTec, Inc. Debt Summary - as of December 31, 2019 Principal Balance (In 000s) Rate Maturity Revolving Credit Facility $339,200 Term Loan 400,000 3.5% September 2024 3.1% September 2024 Senior notes Finance lease and other obligations 400,000 305,600 4.9% March 2023 4.1% varies Total Debt $ 1,444,800 Weighted Average Interest Rate 3.9% Total Equity $ 1,791,700 Total Capital $ 3,236,500 (1) Net debt equals total debt less cash. → Ended Q4-19 with a net debt(1) leverage ratio of at 1.6x * Strong and increased liquidity profile, sufficient to capitalize on expected growth and strategic opportunities → No significant near-term maturities & low blended cash interest rate 13

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