Sunrun Inc.

Rule 10b5-1 Disclosure

During our last fiscal quarter, certain of our directors and officers (as defined in Rule 16a-1(f) under the Exchange Act)adopted orterminated the contracts, instructions or written plans for the purchase or sale of our securities as noted below.

On May 29, 2026, Danny Abajian, our Chief Financial Officer, adopted a trading plan for the sale of the Company’s common stock that is intended to satisfy the affirmative defense of Rule 10b5-1(c). The trading plan is set to expire on August 31, 2027, and provides for the following transactions, each of which is subject to the Company’s stock price reaching certain price thresholds: (i) the exercise of up to 164,845 stock options and the sale of the underlying shares of common stock, and (ii) the sale of up to 363,138 shares of common stock, plus certain net shares from the vesting of 204,011 restricted stock units.

On June 15, 2026, Lynn Jurich, our Co-Executive Chair and a member of our Board, adopted a trading plan for the sale of the Company’s common stock that is intended to satisfy the affirmative defense of Rule 10b5-1(c). The trading plan is set to expire on August 20, 2027, and provides for the following transactions, each of which is subject to the Company’s stock price reaching certain price thresholds: (i) the exercise of up to 300,000 stock options and the sale of the underlying shares of common stock, and (ii) the sale of up to 100,000 shares of common stock.