X0306 4 2020-09-15 0 0000893949 MEDNAX, INC. MD 0001722950 Nikolopoulos Nicholas J 1301 CONCORD TERRACE SUNRISE FL 33323 0 1 0 0 EVP Chf Strategy & Growth Offi Common Stock 2020-09-15 4 S 0 10000 19.0179 D 71954 D The price reported in Column 4 is a weighted average price. These shares were sold in twenty-four (24) separate transactions with prices ranging from $18.81 to $19.26 for an average weighted sale price of $19.0179. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this section. /s/ Dominic J. Andreano, Attorney-in-Fact 2020-09-17