X0609 4 2026-09-26 0 0001849056 Oklo Inc. OKLO 0002080717 Goodwin William Carroll Murphy false C/O OKLO INC. 3190 CORONADO DR. SANTA CLARA CA 95054 0 1 0 0 Chief Strategy Officer 0 Class A Common Stock 2026-09-26 4 M 0 3294 A 48562 D Class A Common Stock 2026-09-28 4 S 0 1775 37.39 D 46787 D Restricted Stock Units 2026-09-26 4 M 0 3294 0 D Class A Common Stock 3294 94593 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock. Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of the RSUs. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. On November 4, 2025, the Reporting Person was granted 3,294 RSUs. On September 26, 2026, the RSUs vested in full. /s/ Richard Craig Bealmear, Attorney-in-Fact 2026-09-29