Oklo's top three insider shareholders as of September 09, 2026 are Jacob Dewitte (Co Founder, Ceo, 16.42Mn shares), Caroline Cochran (Co Founder, Coo, 16.42Mn shares), Michael Stuart Klein (Director, 13.95Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Michael Stuart Klein | Director, TenPercentOwner | 0 | 14,100,000 | 14,100,000 | 61.5% | 24 Sep, 2025 |
| 2 | Samuel H. Altman | Director | 0 | 3,732,479 | 3,732,479 | 16.3% | 21 Nov, 2024 |
| 3 | Caroline Cochran | Co Founder, Coo | 398,039 | 1,457,495 | 1,855,534 | 8.1% | 02 Sep, 2026 |
| 4 | Jacob Dewitte | Co Founder, Ceo | 431,533 | 1,424,001 | 1,855,534 | 8.1% | 02 Sep, 2026 |
| 5 | Alexandra Renner | Chief Product Officer | 475,022 | 0 | 475,022 | 2.1% | 03 Sep, 2026 |
| 6 | Richard Craig Bealmear | Chief Financial Officer | 461,642 | 0 | 461,642 | 2.0% | 03 Sep, 2026 |
| 7 | John Hanson | Chief Of Staff | 359,430 | 0 | 359,430 | 1.6% | 25 Aug, 2026 |
| 8 | William Carroll Murphy Goodwin | Chief Legal Strategy Officer | 45,268 | 0 | 45,268 | 0.2% | 25 Aug, 2026 |
| 9 | Patrick Joseph Schweiger | Chief Technology Officer | 19,430 | 0 | 19,430 | 0.1% | 25 Mar, 2026 |
| 10 | Richard Kinzley | Director | 0 | 15,754 | 15,754 | 0.1% | 30 Mar, 2026 |
| 11 | John M Jansen | Director | 12,354 | 0 | 12,354 | 0.1% | 30 Mar, 2026 |
| 12 | Vivek Narayanadas | General Counsel Secretary | 8,762 | 0 | 8,762 | 0.0% | 08 Sep, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 03 Sep, 2026 | Vivek Narayanadas | General Counsel Secretary | Acquired M | 1,014 | — | — | 8,613 | Direct |
| 04 Sep, 2026 | Vivek Narayanadas | General Counsel Secretary | Disposed S | 538 | $39.88 | $21.46K | 8,075 | Direct |
| 08 Sep, 2026 | Vivek Narayanadas | General Counsel Secretary | Acquired M | 687 | — | — | 8,762 | Direct |
| 03 Sep, 2026 | Vivek Narayanadas | General Counsel Secretary | Disposed M | 1,014 | $0.00 | $0 | 17,241 | Direct |
| 08 Sep, 2026 | Vivek Narayanadas | General Counsel Secretary | Disposed M | 687 | $0.00 | $0 | 2,746 | Direct |
| 31 Aug, 2026 | Alexandra Renner | Chief Product Officer | Acquired M | 4,173 | — | — | 476,952 | Direct |
| 31 Aug, 2026 | Alexandra Renner | Chief Product Officer | Disposed M | 4,173 | $0.00 | $0 | 48,001 | Direct |
| 25 Aug, 2026 | Vivek Narayanadas | General Counsel Secretary | Disposed S | 223 | $40.80 | $9.10K | 7,599 | Direct |
| 24 Aug, 2026 | Alexandra Renner | Chief Product Officer | Disposed S | 557 | $39.77 | $22.15K | 472,779 | Direct |
| 24 Aug, 2026 | William Carroll Murphy Goodwin | Chief Legal Strategy Officer | Disposed S | 11,592 | $39.77 | $461.01K | 45,268 | Direct |
| 21 Aug, 2026 | Vivek Narayanadas | General Counsel Secretary | Acquired M | 4,806 | — | — | 11,086 | Direct |
| 24 Aug, 2026 | John Hanson | Chief Of Staff | Disposed S | 539 | $39.77 | $21.44K | 359,430 | Direct |
| 24 Aug, 2026 | Vivek Narayanadas | General Counsel Secretary | Disposed S | 3,264 | $39.77 | $129.81K | 7,822 | Direct |
| 21 Aug, 2026 | Vivek Narayanadas | General Counsel Secretary | Disposed M | 4,806 | $0.00 | $0 | 13,449 | Direct |
| 13 Aug, 2026 | Alexandra Renner | Chief Product Officer | Acquired M | 1,201 | — | — | 473,336 | Direct |
| 13 Aug, 2026 | John Hanson | Chief Of Staff | Acquired M | 961 | — | — | 359,969 | Direct |
| 13 Aug, 2026 | John Hanson | Chief Of Staff | Disposed M | 961 | $0.00 | $0 | 41,327 | Direct |
| 13 Aug, 2026 | Alexandra Renner | Chief Product Officer | Disposed M | 1,201 | $0.00 | $0 | 51,659 | Direct |
| 12 Aug, 2026 | William Carroll Murphy Goodwin | Chief Legal Strategy Officer | Acquired M | 20,685 | — | — | 56,860 | Direct |
| 12 Aug, 2026 | William Carroll Murphy Goodwin | Chief Legal Strategy Officer | Disposed M | 20,685 | $0.00 | $0 | 125,207 | Direct |