Oklo Inc.: 10% owner Caroline Cochran sold 120,000 shares

What happened Caroline Cochran, a 10% owner, sold 120,000 shares in four open-market or private sale transactions on Oct 01, 2026, for total proceeds of $4,381,400. The filing lists the individual lots as: 40,000 shares at $36.64 for $1,465,600; 20,000 shares at $37.07 for $741,400; 40,000 shares at $36.19 for $1,447,600; and 20,000 shares at $36.34 for $726,800.

Key details

• Transaction date: Oct 01, 2026. Reported as sales (code S).
• Prices and ranges: 40,000 at weighted avg $36.64 (range $36.39–$36.87) (F2); 20,000 at weighted avg $37.07 (range $36.87–$37.50) (F4); 40,000 at weighted avg $36.19 (range $36.05–$36.28) (F5); 20,000 at weighted avg $36.34 (range $36.28–$36.39) (F8).
• Plan and disclosures: Sales were effected pursuant to a Rule 10b5-1 plan adopted Mar 31, 2025 (F1). Footnotes also reference the reporting person's spouse and indicate certain securities are held by the spouse (F5–F9).
• Shares owned after the transaction: Not reported in this Form 4; see the issuer's most recent definitive proxy statement for holdings (F3, F6).
• Form 4 filed Oct 05, 2026.

Why it may matter

• The filing shows outright sales, not option exercises or gifts.
• The transactions were made under a Rule 10b5-1 plan (F1).
• The reporting person is a 10% owner, which identifies a large holder rather than an executive role.
• A filing does not show why the insider traded or why the company acted.