RUN · Sunrun Inc.

The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan, adopted June 9, 2025.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $9.77 to $10.08 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 8,314 RSUs, which are subject to forfeiture until they vest.

The transaction reported by the Reporting Person was effected pursuant to a Rule 10b5-1 trading plan adopted August 14, 2025.

Shares held following the reported transaction include 60,786 RSUs, which are subject to forfeiture until they vest.

The shares are held by a family trust, of which the reporting person is co-trustee.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $12.965 to $13.35 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 245,836 RSUs, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $12.95 to $13.355 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 589,322 RSUs, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $12.965 to $13.34 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 395,213 RSUs, which are subject to forfeiture until they vest.

Shares held following the reported transaction include 395,213 RSUs, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $12.935 to $13.335 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 444,494 RSUs, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $12.95 to $13.30 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 60,786 RSUs, which are subject to forfeiture until they vest.

Includes 1,972 shares acquired under the Issuer's employee stock purchase plan.

Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will fully vest on January 1, 2027, subject to the Reporting Person's continued service as of that date.

Shares held following the reported transaction include 8,314 RSUs, which are subject to forfeiture until they vest.

The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan, adopted June 9, 2025.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.09 to $13.88 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will fully vest on January 1, 2027, subject to the Reporting Person's continued service as of that date.

Shares held following the reported transaction include 8,314 RSUs, which are subject to forfeiture until they vest.

Shares held prior to the reported transaction totaled 51,197 shares, of which 9,687 were unvested RSUs held directly and 41,510 were held indirectly via a trust, of which the Reporting Person is a co-trustee.

Securities held of record by SLS and ATS 2019 Trust, of which the Reporting Person is co-trustee.

The shares are held by a family trust, of which the reporting person is co-trustee.

Shares held following the reported transaction include 428,760 RSUs, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.385 to $13.415 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 428,760 RSUs, which are subject to forfeiture until they vest.

Includes 1,506 shares previously acquired under the Issuer's employee stock purchase plan.

The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan, adopted June 9, 2025.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $15.63 to $16.17 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Includes 1,144 shares acquired under the Issuer's employee stock purchase plan.

The transaction reported by the Reporting Person was effected pursuant to a Rule 10b5-1 trading plan adopted June 9, 2025.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $12.68 to $13.01 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Each share is represented by a restricted stock unit ("RSU"). 25% of the RSUs will vest on April 6, 2027, and 1/12 of the remaining RSUs will vest quarterly thereafter, subject to the Reporting Person's continued service through each vesting date.

Shares held following the reported transaction include 638,523 RSUs, which are subject to forfeiture until they vest.

Each share is represented by a restricted stock unit ("RSU"). 25% of the RSUs will vest on April 6, 2027, and 1/12 of the remaining RSUs will vest quarterly thereafter, subject to the Reporting Person's continued service through each vesting date.

Shares held following the reported transaction include 265,964 RSUs, which are subject to forfeiture until they vest.

Each share is represented by a restricted stock unit ("RSU"). 25% of the RSUs will vest on April 6, 2027, and 1/12 of the remaining RSUs will vest quarterly thereafter, subject to the Reporting Person's continued service through each vesting date.

Shares held following the reported transaction include 65,811 RSUs, which are subject to forfeiture until they vest.

Each share is represented by a restricted stock unit ("RSU"). 25% of the RSUs will vest on April 6, 2027, and 1/12 of the remaining RSUs will vest quarterly thereafter, subject to the Reporting Person's continued service through each vesting date.

Shares held following the reported transaction include 481,375 RSUs, which are subject to forfeiture until they vest.

Each share is represented by a restricted stock unit ("RSU"). 25% of the RSUs will vest on April 6, 2027, and 1/12 of the remaining RSUs will vest quarterly thereafter, subject to the Reporting Person's continued service through each vesting date.

Shares held following the reported transaction include 432,758 RSUs, which are subject to forfeiture until they vest.

The transaction reported by the Reporting Person was effected pursuant to a Rule 10b5-1 trading plan adopted August 14, 2025.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.6500 to $13.7717 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 45,688 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.18 to $13.305 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 437,285 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.185 to $13.33 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 333,349 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.18 to $13.365 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 302,147 RSUs, which are subject to forfeiture until they vest.

Shares held following the reported transaction include 302,147 RSUs, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.185 to $13.29 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 45,688 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.185 to $13.305 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 178,890 restricted stock units, which are subject to forfeiture until they vest.

Securities held of record by Abajian Family Trust, of which the Reporting Person is co-trustee.

The transaction reported by the Reporting Person was effected pursuant to a Rule 10b5-1 trading plan adopted June 9, 2025.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $13.875 to $14.28 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $11.905 to $11.98 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 813,326 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $11.925 to $12.075 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 619,587 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $11.985 to $12.00 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transactions include 559,018 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $11.955 to $11.98 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transaction include 332,724 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $11.965 to $12.01 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Securities held of record by Abajian Family Trust, of which the Reporting Person is co-trustee.

Shares held following the reported transaction include 9,687 RSUs, which are subject to forfeiture until they vest.

The transaction reported by the Reporting Person was effected pursuant to a Rule 10b5-1 trading plan adopted June 9, 2025.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $12.41 to $13.08 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Shares held following the reported transactions include 1,274 restricted stock units, which are subject to forfeiture until they vest.

Shares sold to cover tax obligation from settlement of vested restricted stock units.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $12.11 to $12.66 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

On March 4, 2021, the Reporting Person was granted performance-based restricted stock units ("PRSUs"). Each PRSU represents a contingent right to receive a share of the Issuer's Common Stock upon settlement. The PRSUs vest on the date that the Compensation Committee of the Issuer's Board of Directors certifies attainment, based on the Issuer's satisfaction of certain performance criteria. The performance criteria for the measurement period ending December 31, 2025 were met and certified on February 27, 2026, resulting in the issuance of 12,729 shares of the Issuer's Common Stock

On May 29, 2024, the Reporting Person was granted PRSUs. Each PRSU represents a contingent right to receive a share of the Issuer's Common Stock upon settlement. The Compensation Committee of the Issuer's Board of Directors certifies attainment based on the Issuer's satisfaction of certain performance criteria. The performance criteria were met and 170,515 PRSUs were certified as attained on February 27, 2026. 100% of the PRSUs shall vest and become shares of the Issuer's Common Stock on April 6, 2026, subject to the Reporting Person's continued service through the vesting date. Due to an administrative error, the Form 4 filed on March 3, 2026 included an incorrect figure for the number of PRSUs certified. As reported in this amendment, the number of PRSUs certified was 170,515. There are no other changes reported in this amendment.

Shares held following the reported transaction include 622,893 restricted stock units, which are subject to forfeiture until they vest.

On May 29, 2024, the Reporting Person was granted PRSUs. Each PRSU represents a contingent right to receive a share of the Issuer's Common Stock upon settlement. The Compensation Committee of the Issuer's Board of Directors certifies attainment based on the Issuer's satisfaction of certain performance criteria. The performance criteria were met and 220,667 PRSUs were certified as attained on February 27, 2026. 100% of the PRSUs shall vest and become shares of the Issuer's Common Stock on April 6, 2026, subject to the Reporting Person's continued service through the vesting date. Due to an administrative error, the Form 4 filed on March 3, 2026 included an incorrect figure for the number of PRSUs certified. As reported in this amendment, the number of PRSUs certified was 220,667. There are no other changes reported in this amendment.

Shares held following the reported transaction include 819,027 restricted stock units, which are subject to forfeiture until they vest.

On May 29, 2024, the Reporting Person was granted PRSUs. Each PRSU represents a contingent right to receive a share of the Issuer's Common Stock upon settlement. The Compensation Committee of the Issuer's Board of Directors certifies attainment based on the Issuer's satisfaction of certain performance criteria. The performance criteria were met and 90,271 PRSUs were certified as attained on February 27, 2026. 100% of the PRSUs shall vest and become shares of the Issuer's Common Stock on April 6, 2026, subject to the Reporting Person's continued service through the vesting date. Due to an administrative error, the Form 4 filed on March 3, 2026 included an incorrect figure for the number of PRSUs certified. As reported in this amendment, the number of PRSUs certified was 90,271. There are no other changes reported in this amendment.

Shares held following the reported transaction include 334,997 restricted stock units, which are subject to forfeiture until they vest.

On March 4, 2021, the Reporting Person was granted performance-based restricted stock units ("PRSUs"). Each PRSU represents a contingent right to receive a share of the Issuer's Common Stock upon settlement. The PRSUs vest on the date that the Compensation Committee of the Issuer's Board of Directors certifies attainment, based on the Issuer's satisfaction of certain performance criteria. The performance criteria for the measurement period ending December 31, 2025 were met and certified on February 27, 2026, resulting in the issuance of 5,570 shares of the Issuer's Common Stock

Shares held following the reported transactions include 3,184 restricted stock units, which are subject to forfeiture until they vest.

On May 29, 2024, the Reporting Person was granted PRSUs. Each PRSU represents a contingent right to receive a share of the Issuer's Common Stock upon settlement. The Compensation Committee of the Issuer's Board of Directors certifies attainment based on the Issuer's satisfaction of certain performance criteria. The performance criteria were met and 150,454 PRSUs were certified as attained on February 27, 2026. 100% of the PRSUs shall vest and become shares of the Issuer's Common Stock on April 6, 2026, subject to the Reporting Person's continued service through the vesting date. Due to an administrative error, the Form 4 filed on March 3, 2026 included an incorrect figure for the number of PRSUs certified. As reported in this amendment, the number of PRSUs certified was 150,454. There are no other changes reported in this amendment.

Shares held following the reported transactions include 562,561 restricted stock units, which are subject to forfeiture until they vest.

The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on September 3, 2025.

Shares sold only to cover exercise price and tax obligation upon the exercise of a stock option.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $20.30 to $21.12 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

The transactions reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on September 3, 2025.

Shares sold only to cover exercise price and tax obligation upon the exercise of a stock option.

Price represents the weighted average sale price of the shares sold. The sale price ranged from $19.30 to $20.29 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.