Oklo Inc.: chief product officer Alexandra Renner exercised 1,521 shares

What happened

• Alexandra Renner, chief product officer, had 1,521 restricted stock units (RSUs) distributed/exercised on Oct 13, 2026 (reported as a derivative exercise/conversion). The filing shows a derivative disposition of 1,521 shares at $0 on Oct 13, 2026.
• On Oct 14, 2026 Renner sold 688 shares in an open-market sale at $30.75 per share for $21,156. The Form 4 was filed on Oct 15, 2026.

Key details

• Transaction dates and prices: Oct 13, 2026 — exercise/conversion/distribution of 1,521 RSUs (derivative); Oct 14, 2026 — open-market sale of 688 shares at $30.75 for $21,156.
• Shares owned after the transactions: not reported in this filing.
• Footnotes: F1 confirms each RSU represents a contingent right to one share; F2 states the sale of shares was to satisfy tax withholding obligations through a "sell to cover" transaction and not a discretionary sale by the reporting person; F3 notes the Reporting Person was granted 19,009 RSUs on Apr 13, 2026 vesting in 12 quarterly installments and that 1,521 RSUs were distributed on Oct 13, 2026.
• Filing date: Oct 15, 2026; period of report: Oct 13, 2026.

Why it may matter

• The filing shows RSUs were converted to shares and that some shares were sold to satisfy tax withholding (a "sell-to-cover" in the filing), rather than a separate discretionary sale of newly acquired shares.
• The filing does not show why the insider traded or why the company acted.