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 16, 2025, Jeanna Steele, our Chief People and Legal Officer, entered into a new trading plan that is intended to satisfy the affirmative defense of Rule 10b5-1(c) and which cancelled and replaced her existing plan that was entered into on March 13, 2025. The sole purpose of amending the plan was to increase certain limit prices, and under the new amended plan, the trading plan expiration date and share amounts remain unchanged from the prior plan, as described below. The plan remains set to expire on July 9, 2026 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 129,752 stock options and the sale of the underlying shares of common stock, and (ii) the sale of up to 524,014 shares of common stock.

On June 9, 2025, Lynn Jurich, our Co-Executive Chair of the Board of Directors, 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, 2026 and provides for the sale of up to 800,000 shares of common stock, subject to the Company's stock price reaching certain price thresholds.