X0609 4 2026-10-13 0 0001849056 Oklo Inc. OKLO 0002147680 Renner Alexandra false C/O OKLO INC. 3190 CORONADO DRIVE SANTA CLARA CA 95054 0 1 0 0 Chief Product Officer 0 Class A Common Stock 2026-10-13 4 M 0 1521 A 479116 D Class A Common Stock 2026-10-14 4 S 0 688 30.75 D 478428 D Class A Common Stock 116390 I Joint account with spouse Restricted Stock Units 2026-10-13 4 M 0 1521 0 D Class A Common Stock 1521 125650 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 April 13, 2026, the Reporting Person was granted 19,009 RSUs, vesting in 12 substantially equal quarterly installments. On October 13, 2026, 1,521 RSUs were distributed. /s/ Richard Craig Bealmear, Attorney-in-Fact 2026-10-15