X0508 4 2025-11-18 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 2025-11-18 4 M false 20686 A 20686 D Class A Common Stock 2025-11-19 4 S false 11936 101.838 D 8750 D Restricted Stock Units 2025-11-18 4 M false 20686 0 D Class A Common Stock 20686 144798 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock. On November 18, 2025, 20,686 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 August 6, 2025, the Reporting Person was granted 248,227 RSUs, vesting as to one-third of the underlying shares on August 12, 2025 and thereafter in eight substantially equal quarterly installments. /s/ Richard Craig Bealmear, Attorney-in-Fact 2025-11-20