Sunrun Inc. — Major Shareholding Notification 2025

Nov 13, 2025

xml version="1.0" encoding="UTF-8"? SCHEDULE 13G/A 0001446580-25-000073 0001446580 XXXXXXXX LIVE 1 Common Stock, $0.0001 par value per share 09/30/2025 0001469367 Sunrun Inc. 86771W105 600 California Street Suite 1800 San Francisco CA 94108 Rule 13d-1(b) G1 Execution Services, LLC IL 0 10091066 0 10091066 10091066 4.4 BD OO With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP, Susquehanna Investment Group and Susquehanna Securities, LLC are affiliated independent broker-dealers which, together with Susquehanna Fundamental Investments, LLC and Susquehanna Portfolio Strategies, LLC, may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person. SIG Brokerage, LP DE 87900 10091066 87900 10091066 10091066 4.4 BD PN With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP, Susquehanna Investment Group and Susquehanna Securities, LLC are affiliated independent broker-dealers which, together with Susquehanna Fundamental Investments, LLC and Susquehanna Portfolio Strategies, LLC, may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person. Susquehanna Fundamental Investments, LLC DE 255389 10091066 255389 10091066 10091066 4.4 OO With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP, Susquehanna Investment Group and Susquehanna Securities, LLC are affiliated independent broker-dealers which, together with Susquehanna Fundamental Investments, LLC and Susquehanna Portfolio Strategies, LLC, may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person. Susquehanna Investment Group PA 236300 10091066 236300 10091066 10091066 4.4 BD PN With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP, Susquehanna Investment Group and Susquehanna Securities, LLC are affiliated independent broker-dealers which, together with Susquehanna Fundamental Investments, LLC and Susquehanna Portfolio Strategies, LLC, may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person. Susquehanna Portfolio Strategies, LLC DE 240512 10091066 240512 10091066 10091066 4.4 OO With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP, Susquehanna Investment Group and Susquehanna Securities, LLC are affiliated independent broker-dealers which, together with Susquehanna Fundamental Investments, LLC and Susquehanna Portfolio Strategies, LLC, may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person. Susquehanna Securities, LLC DE 9270965 10091066 9270965 10091066 10091066 4.4 BD OO With respect to Row 5 through Row 9 above, G1 Execution Services, LLC, SIG Brokerage, LP, Susquehanna Investment Group and Susquehanna Securities, LLC are affiliated independent broker-dealers which, together with Susquehanna Fundamental Investments, LLC and Susquehanna Portfolio Strategies, LLC, may be deemed a group. For purposes of this report, we have indicated that each reporting person has sole voting and dispositive power with respect to the shares beneficially owned by it and that the reporting persons have shared voting and dispositive power with respect to all shares beneficially owned by all of the reporting persons. Each of the reporting persons disclaims beneficial ownership of shares owned directly by another reporting person. Sunrun Inc. 600 California Street, Suite 1800, San Francisco, California 94108 This statement is filed by the entities listed below, who are collectively referred to herein as "Reporting Persons" with respect to the shares of Common Stock, $0.0001 par value per share (the "Shares"), of Sunrun Inc. (the "Company"). (i) G1 Execution Services, LLC (ii) SIG Brokerage, LP (iii) Susquehanna Fundamental Investments, LLC (iv) Susquehanna Investment Group (v) Susquehanna Portfolio Strategies, LLC (vi) Susquehanna Securities, LLC The address of the principal business office of G1 Execution Services, LLC is: 175 W. Jackson Blvd. Suite 1700 Chicago, IL 60604 The address of the principal business office of each of SIG Brokerage, LP, Susquehanna Fundamental Investments, LLC, Susquehanna Investment Group, Susquehanna Portfolio Strategies, LLC and Susquehanna Securities, LLC is: 401 E. City Avenue Suite 220 Bala Cynwyd, PA 19004 Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. N BD The information required by this Item 4(a) is set forth in Row 9 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The number of Shares reported as beneficially owned by each of SIG Brokerage, LP and Susquehanna Investment Group consists of options to buy Shares. The number of Shares reported as beneficially owned by Susquehanna Securities, LLC includes options to buy 9,038,600 Shares. The Company's Quarterly Report on Form 10-Q, filed on August 6, 2025, indicates that there were 230,732,572 Shares outstanding as of August 1, 2025. 4.4 The information required by this Item 4(c)(i) is set forth in Row 5 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The information required by this Item 4(c)(ii) is set forth in Row 6 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The information required by this Item 4(c)(iii) is set forth in Row 7 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The information required by this Item 4(c)(iv) is set forth in Row 8 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. N Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. EXHIBIT INDEX EXHIBIT DESCRIPTION _ _ 99 Joint Filing Agreement* * Previously filed G1 Execution Services, LLC /s/ Brian Sopinsky Brian Sopinsky, Secretary 11/13/2025 SIG Brokerage, LP /s/ Brian Sopinsky Brian Sopinsky, Assistant Secretary 11/13/2025 Susquehanna Fundamental Investments, LLC /s/ Brian Sopinsky Brian Sopinsky, Assistant Secretary 11/13/2025 Susquehanna Investment Group /s/ Brian Sopinsky Brian Sopinsky, General Counsel 11/13/2025 Susquehanna Portfolio Strategies, LLC /s/ Brian Sopinsky Brian Sopinsky, Assistant Secretary 11/13/2025 Susquehanna Securities, LLC /s/ Brian Sopinsky Brian Sopinsky, Secretary 11/13/2025