NEW YORK, December 30, 2025, 3:38 PM ET — Regular session
- Oklo shares were down about 2% in afternoon trading as small modular reactor stocks stayed volatile.
- A late-Monday SEC filing showed large share transfers by Oklo insiders into family trusts, with no cash changing hands.
- Traders are watching regulatory milestones and year-end U.S. nuclear policy signals.
Oklo Inc (OKLO) shares fell 2.3% to $72.42 in afternoon trading on Tuesday, after earlier swinging between $74.73 and $71.90. About 5.7 million shares had changed hands.
The pullback matters because Oklo is still in the “story stock” phase: it is developing advanced nuclear reactors and investors largely price the shares on regulatory progress, funding runway and customer demand rather than current revenue. That mix can amplify moves around filings and policy headlines.
A Form 4 filing signed late Monday showed Oklo co-founder and Chief Operating Officer Caroline Cochran transferred 7.58 million Class A shares into a family trust, while her spouse, CEO Jacob DeWitte, transferred 7.85 million shares into another trust. The transfers were reported as made for no consideration, the filing showed.
A Form 4 is a U.S. Securities and Exchange Commission disclosure that insiders file to report changes in ownership, including certain non-sale transfers. Trust moves like these are often tied to estate planning, but they can still draw attention in stocks with heavy retail participation and relatively tight supply.
Oklo’s decline tracked broader weakness in small modular reactor developers. Nano Nuclear Energy fell 5.9% and NuScale Power dipped 0.6%, while uranium fuel supplier Centrus Energy rose 1.1% and miner Cameco eased 0.4%.
Sector headlines were also in focus after Duke Energy sought an early site permit from the U.S. Nuclear Regulatory Commission for a potential nuclear project in North Carolina, a step that can reserve a site for up to 20 years while a company evaluates reactor designs.
For Oklo, licensing remains the critical swing factor. The NRC says it is currently engaged in pre-application activities with the company on the Aurora Powerhouse, and it lists multiple topical reports and assessments as under review.
NRC records also show the agency denied an Aurora combined operating license application in January 2022 for failure to supply information.
Oklo says it is pursuing the NRC’s Part 52 “combined license” pathway, which bundles construction and operating approvals into one process, and argues that a reference application can narrow the scope of later reviews. Oklo
“Regulatory execution is emerging as one of the most important gating factors” for advanced nuclear commercialization, Nilanjan Choudhury of Zacks Investment Research wrote in a note carried by Nasdaq on Tuesday. Nasdaq
Investors are also watching for U.S. government decisions that could shape advanced-reactor fuel supply. The Energy Department expected to begin announcing by Dec. 31 which companies would take surplus Cold War-era plutonium for eventual processing into reactor fuel, a Reuters report in October said.
Technically, Tuesday’s slide left the stock near the lower end of its day’s range after failing to hold an early bounce. Traders said a clean break below the session low would sharpen attention on round-number support near $70.
With no fresh company announcement on Tuesday, the next catalysts for OKLO will likely come from further regulatory updates, any government program decisions tied to advanced nuclear fuel, and signs of customer traction as utilities and data-center power demand keep nuclear capacity on the policy agenda.
