Oklo

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-06 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Oklo Inc. (OKLO) CIK: 0001849056 --- Reporting Owner --- Name: Jansen John M CIK: 0002021774 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-03-06 | Code: M (Exercise of derivative) Shares: +16,854 | Price: $58.25 Total Value: $981,745.50 Shares Owned After: 22,854 | Ownership: D (Direct) Footnotes: [F1] For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission. --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-03-06 | Code: M (Exercise of derivative) Shares: -16,854 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock. [F3] The restricted stock units vested in full on May 9, 2025. [F4] The restricted stock units vest in full on May 9, 2025. --- Footnotes (Complete Index) --- F1: For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission. F2: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock. F3: The restricted stock units vested in full on May 9, 2025. F4: The restricted stock units vest in full on May 9, 2025. --- Signature --- /s/ /s/ Richard Craig Bealmear, Attorney-in-Fact (2026-03-10)