=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-09-13
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: Oklo Inc. (OKLO)
CIK: 0001849056
--- Reporting Owner ---
Name: Renner Alexandra
CIK: 0002147680
Role: Officer (Chief Product Officer)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Class A Common Stock
Date: 2026-09-13 | Code: M (Exercise of derivative)
Shares: +1,202
Shares Owned After: 476,224 | Ownership: D (Direct)
Footnotes:
[F1] Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock.
--- Derivative Transactions ---
[Transaction #1]
Security: Restricted Stock Units
Date: 2026-09-13 | Code: M (Exercise of derivative)
Shares: -1,202 | Price: $0.00
Shares Owned After: 129,642 | Ownership: D (Direct)
Footnotes:
[F1] Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock.
[F2] On March 13, 2025, the Reporting Person was granted 51,659 RSUs, vesting as to 20% of the underlying shares on March 13, 2026 and continuing to vest thereafter in 48 substantially equal quarterly installments. On September 13, 2026, 1,202 RSUs were distributed.
[F2] On March 13, 2025, the Reporting Person was granted 51,659 RSUs, vesting as to 20% of the underlying shares on March 13, 2026 and continuing to vest thereafter in 48 substantially equal quarterly installments. On September 13, 2026, 1,202 RSUs were distributed.
--- Holdings ---
[Holding #1]
Security: Class A Common Stock
Ownership: I (Indirect)
--- Footnotes (Complete Index) ---
F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock.
F2: On March 13, 2025, the Reporting Person was granted 51,659 RSUs, vesting as to 20% of the underlying shares on March 13, 2026 and continuing to vest thereafter in 48 substantially equal quarterly installments. On September 13, 2026, 1,202 RSUs were distributed.
--- Signature ---
/s/ /s/ Richard Craig Bealmear, Attorney-in-Fact (2026-09-15)
