X0306 4 2018-03-13 0 0001607716 Vivint Solar, Inc. VSLR 0001618819 Dunn Alex J. 1800 WEST ASHTON BLVD LEHI UT 84043 1 0 0 0 Common Stock 2018-03-13 4 S 0 100000 3.1796 D 268749 D Common Stock 2018-03-14 4 S 0 100000 3.1594 D 168749 D The "Amount" and "Price" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $3.10 to $3.225, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein. The "Amount" and "Price" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $3.15 to $3.20, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein. /S/ DANA C. RUSSELL, ATTORNEY-IN-FACT 2018-03-15