NUSCALE POWER Corp (SMR) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-29 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: NUSCALE POWER Corp (SMR) CIK: 0001822966 --- Reporting Owner --- Name: Harshaw Stuart Alan CIK: 0001738763 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-05-29 | Code: A (Grant or award) Shares: +8,681 | Price: $0.00 Shares Owned After: 8,681 | Ownership: D (Direct) Footnotes: [F1] The reporting person received an award of 8,681 restricted stock units on May 29, 2026, which vest quarterly in four equal installments over one year, beginning on August 29, 2026. Each restricted stock unit represents the right to receive one share of Class A Common Stock upon vesting. [Transaction #2] Security: Class A Common Stock Date: 2026-05-29 | Code: A (Grant or award) Shares: +8,681 | Price: $0.00 Shares Owned After: 17,362 | Ownership: D (Direct) Footnotes: [F2] The reporting person received a one-time award of 8,681 restricted stock units on May 29, 2026, which will vest quarterly over three years beginning August 29, 2026. Each restricted stock unit represents a right to receive one share of Class A Common Stock upon vesting. --- Footnotes (Complete Index) --- F1: The reporting person received an award of 8,681 restricted stock units on May 29, 2026, which vest quarterly in four equal installments over one year, beginning on August 29, 2026. Each restricted stock unit represents the right to receive one share of Class A Common Stock upon vesting. F2: The reporting person received a one-time award of 8,681 restricted stock units on May 29, 2026, which will vest quarterly over three years beginning August 29, 2026. Each restricted stock unit represents a right to receive one share of Class A Common Stock upon vesting. --- Signature --- /s/ Patrick C. Cannon, attorney-in-fact for Stuart Alan Harshaw (2026-06-02)