X0508 4 2025-11-28 0001849056 Oklo Inc. OKLO 0002080717 Goodwin William Carroll Murphy C/O OKLO INC. 3190 CORONADO DR. SANTA CLARA CA 95054 false true false false Chief Legal & Strategy Officer false Class A Common Stock 2025-11-28 4 M false 10000 A 18750 D Class A Common Stock 2025-11-28 4 M false 734 A 19484 D Class A Common Stock 2025-12-01 4 S false 5864 88.4239 D 13620 D Restricted Stock Units 2025-11-28 4 M false 10000 0 D Class A Common Stock 10000 0 D Restricted Stock Units 2025-11-28 4 M false 734 0 D Class A Common Stock 734 1468 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock. On November 28, 2025, an aggregate of 10,734 RSUs were released to the Reporting Person. 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 listed in Table II. 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 February 3, 2025, the Reporting Person was granted 10,000 RSUs, vesting in full as to all the underlying shares on November 29, 2025. On January 22, 2025, the Reporting Person was granted 2,202 RSUs, vesting in three substantially equal annual installments beginning on November 29, 2025. /s/ Richard Craig Bealmear, Attorney-in-Fact 2025-12-02