X0306 4 2019-02-11 0 0001469367 Sunrun Inc. RUN 0001567929 Vassallo Steven 550 HIGH STREET, 3RD FLOOR PALO ALTO CA 94301 1 0 0 0 Common Stock 2019-02-11 4 S 0 33945 15.04 D 172152 I Vassallo Family Revocable Trust dated 7/15/02 Common Stock 39810 D Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $15.00 to $15.12 per share. The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. Transaction pursuant to a 10b5-1 Plan adopted on August 31, 2018. The shares are held by the Vassallo Family Revocable Trust dated 7/15/02 (the "Vassallo Family Trust"). Steve P. Vassallo is a trustee of the Vassallo Family Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Vassallo Family Trust except to the extent of his proportionate pecuniary interest therein. /s/ David Armstrong as Attorney-In-Fact for Steve Vassallo 2019-02-13