Oklo
Develops fast-fission powerhouses, nuclear-fuel recycling, and radioisotope production.
$40.35
After-hours close+0.23 (+0.57%)
At close$40.12(−5.67%)
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Breakdown13F · Form 4
Institutions 52.51%91.37M sharesInsiders 2.03%3.53M sharesOther 45.46%79.10M shares
Shares outstanding 173.99M · Float 146.07M · 84.0% free float
Institutions13F, as of Jun 30, 2026
746 holders · 91.37M shares · 130 new positions · 394 increased · 176 reduced · 134 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Mirae Asset Global Etfs Holdings Ltd. | 8.94M | 5.14% | +79.3K | Aug 14, 2026 |
| Van Eck Associates Corp | 7.91M | 4.55% | +1.83M | Aug 14, 2026 |
| BlackRock, Inc. | 7.31M | 4.20% | −8.60M | Aug 7, 2026 |
| Vanguard Capital Management LLC | 6.54M | 3.76% | +708.4K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 6.43M | 3.69% | +187.6K | Aug 13, 2026 |
| Morgan Stanley | 3.26M | 1.88% | +581.1K | Aug 13, 2026 |
| State Street Corp | 2.38M | 1.37% | −948.1K | Aug 7, 2026 |
| Geode Capital Management, LLC | 2.36M | 1.36% | −689.7K | Aug 12, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Jacob DeWitteincl. Caroline Cochran | 11.10% | 20.56M | 13D | Jul 6, 2026 ↗ |
| BlackRock, Inc. | 9.20% | 14.42M | 13G | Jan 21, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Caroline Cochran | director, 10 percent owner, officer: Co-Founder, COO | 909.6K | 0.52% | Aug 5, 2026 |
| Jacob DeWitte | director, 10 percent owner, officer: Co-Founder, CEO | 909.6K | 0.52% | Aug 5, 2026 |
| Alexandra Renner | officer: Chief Product Officer | 595.9K | 0.34% | Aug 25, 2026 |
| Richard Craig Bealmear | officer: Chief Financial Officer | 456.0K | 0.26% | Aug 5, 2026 |
| John Hanson | officer: Chief of Staff | 359.4K | 0.21% | Aug 25, 2026 |
| Michael Stuart Klein | director, 10 percent owner: | 150.0K | 0.09% | Sep 24, 2025 |
| William Carroll Murphy Goodwin | officer: Chief Legal & Strategy Officer | 45.3K | 0.03% | Aug 25, 2026 |
| Daniel B. Poneman | director | 37.0K | 0.02% | Mar 7, 2025 |
| Richard Kinzley | director | 19.6K | 0.01% | Mar 30, 2026 |
| Patrick Joseph Schweiger | officer: Chief Technology Officer | 19.4K | 0.01% | Mar 26, 2026 |
2 people have not refiled in the last 18 months (17.68M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 25, 2026 | Vivek Narayanadasofficer: General Counsel & Secretary | Sale | 223 | $40.80 | 7,599 |
| Aug 24, 2026 | William Carroll Murphy Goodwinofficer: Chief Legal & Strategy Officer | Sale | 11,592 | $39.77 | 45,268 |
| Aug 24, 2026 | John Hansonofficer: Chief of Staff | Sale | 539 | $39.77 | 359,430 |
| Aug 24, 2026 | Alexandra Rennerofficer: Chief Product Officer | Sale | 557 | $39.77 | 472,779 |
| Aug 24, 2026 | Vivek Narayanadasofficer: General Counsel & Secretary | Sale | 3,264 | $39.77 | 7,822 |
| Aug 3, 2026 | Jacob DeWittedirector, 10 percent owner, officer: Co-Founder, CEO | Sale · 6 lots | 120,000 | $40.87 | 909,572 |
| Aug 3, 2026 | Caroline Cochrandirector, 10 percent owner, officer: Co-Founder, COO | Sale · 6 lots | 120,000 | $40.87 | 909,572 |
| Aug 3, 2026 | Richard Craig Bealmearofficer: Chief Financial Officer | Sale | 16,452 | $38.80 | 450,332 |
| Jul 1, 2026 | Richard Craig Bealmearofficer: Chief Financial Officer | Sale | 16,321 | $52.63 | 444,557 |
| Jul 1, 2026 | Caroline Cochrandirector, 10 percent owner, officer: Co-Founder, COO | Sale · 4 lots | 200,000 | $52.93 | 989,572 |
CongressHouse and Senate disclosures
Not reported.