NUSCALE POWER Corp

Insider Trading Arrangements

We proposed to certain employees, including officers, with restricted stock units (“RSUs”) that they instruct the agent who administers our 2022 Long-Term Incentive Plan to promptly sell shares of Class A common stock sufficient to cover tax withholding obligations arising from the vesting and settlement of the RSUs. With respect to any eligible sell-to-cover transactions before the expiration of the cooling off periods specified in Rule 10b5-1(c), the instruction is intended to be a “non-Rule 10b5-1 trading arrangement” as defined in Item 408(c) of Regulation S-K, and with respect to eligible sell-to-cover transactions after the cooling off periods specified in Rule 10b5-1(c), the instruction is intended to be a “Rule 10b5-1 trading arrangement” as defined in Item 408(a) of Regulation S-K and satisfy the affirmative defense of Rule 10b5-1(c). There is no durational limit to, or specified number of shares to be sold pursuant to, these instructions. During the three months ended June 30, 2026, Jose Reyes, Chief Technology Officer, adopted a Rule 10b5-1 trading arrangement on May 12, 2026.