X0609 4 2026-03-24 0 0001822966 NUSCALE POWER Corp SMR 0001318251 Tonnel David A false 1100 NE CIRCLE BLVD., SUITE 350 CORVALLIS OR 97330 0 1 0 0 Chief Accounting Officer 0 Class A Common Stock 2026-03-24 4 M 0 9710 A 9710 D Class A Common Stock 2026-03-25 4 S 0 2290 11.845 D 7420 D Restricted Stock Unit 2026-03-24 4 M 0 9710 0 D Class A Common Stock 9710 19421 D Restricted stock units convert into Class A Common stock on a one-for-one basis. The sales reported on this Form 4 represent shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units. The sales were to satisfy tax withholding obligations to be funded by a "sell to cover" transaction. On March 25, 2025, the reporting person was granted 29,131 restricted stock units, vesting in three equal installments beginning on the first anniversary of the grant date. Patrick C. Cannon, attorney-in-fact for David A. Tonnel 2026-03-26