CANADA PENSION PLAN INVESTMENT BOARD → ReNew Energy Global plc RNW

This Amendment amends and supplements Item 4 of the Original Schedule 13D by adding the following: Side Letter to the Transaction Agreement On October 28, 2026, the Reporting Person, Sumant Sinha and the Issuer entered into a side letter (the "Side Letter") to the Transaction Agreement, dated August 11, 2026, among those parties. The Side Letter amends paragraph 4.2(h) of Part 1 of Schedule 3 (Company Equity Plans and Employee Matters) to the Transaction Agreement to clarify the treatment of replacement awards under the New Incentive Plan upon cessation of employment. Except as expressly amended by the Side Letter, the Transaction Agreement remains in full force and effect. The foregoing description of the Side Letter does not purport to be complete and is qualified in its entirety by reference to the full text of the Side Letter, which is filed as Exhibit 99.31 to this Amendment and incorporated herein by reference.