What's happening

OKLO Inc. reported a concentrated wave of insider selling activity, with seven Form 4 filings submitted between March 25 and April 3, 2026. The largest transactions occurred on April 1, when Co-Founder and CEO Jacob DeWitte sold 200,000 shares at $50.35 per share for $10,069,852, while Co-Founder and COO Caroline Cochran executed an identical sale for the same amount. CFO Richard Craig Bealmear sold 16,342 shares at $51.08 per share for $834,749 on the same date.

Additional insider sales included Director John M. Jansen disposing of 10,500 shares at $51.52 per share for $540,960 on March 27, and Director Richard Kinzley selling 4,000 shares at $52.09 per share for $208,360 on the same date. Earlier transactions saw CTO Patrick Joseph Schweiger sell 5,561 shares at $56.48 per share for $314,085 on March 25, and Chief Legal & Strategy Officer William Carroll Murphy Goodwin sell 10,639 shares at the same price for $600,891. Simultaneously, NuScale Power Corp. (SMR) and Constellation Energy Corp. (CEG) each reported Form 4 filings on April 2.

Why it matters for markets

The $22.6 million in OKLO insider sales occurred while the stock traded between $50.35 and $56.48 per share, significantly below current levels of $66.81, representing potential gains of 18-33% for remaining shareholders since the transactions. The timing coincides with nuclear energy's resurgence driven by AI infrastructure demands, as evidenced by SMR's 10.87% daily gain to $12.65 and its 52-week range of $8.85-$57.42 showing high volatility in the small modular reactor space.

OKLO's $11.60 billion market capitalization reflects investor appetite for its Aurora microreactor technology, which generates 1.5-15 MWe of power using recycled uranium fuel and promises deployment in under two years for data centers. The company's 215-employee workforce developing factory-built nuclear solutions contrasts with NuScale's larger 428-employee operation and $4.10 billion market cap, highlighting different scaling approaches in the SMR sector. Constellation Energy's $107.32 billion market cap and $25.53 billion revenue demonstrate the established nuclear utility sector's scale compared to emerging SMR developers.

Sectors and assets to watch

Small modular reactor developers face intensifying competition as AI data centers drive unprecedented baseload power demand. OKLO's Aurora microreactor technology competes directly with NuScale's 77 MWe NuScale Power Module, which scales up to 924 MWe in VOYGR plant configurations, representing different approaches to the same market opportunity. NuScale's NRC-certified design provides regulatory advantages, while OKLO's fuel recycling technology and faster deployment timeline offer operational benefits.

Established nuclear operators like Constellation Energy, with its $25.53 billion revenue and 15,291 employees operating the largest U.S. nuclear fleet, represent the incumbent competition for long-term power purchase agreements. The sector's 52-week ranges show extreme volatility, with OKLO spanning $19.89-$193.84 and SMR ranging $8.85-$57.42, indicating high speculative interest but uncertain valuations as commercial deployment timelines remain years away.

What to watch next

Monitor additional Form 4 filings from nuclear sector insiders as the industry approaches critical commercial milestones and regulatory decisions. Track OKLO's progress toward Aurora microreactor deployment commitments and NuScale's VOYGR plant development timeline, as execution against these promises will determine whether current valuations reflect realistic commercial prospects. Watch for power purchase agreement announcements from major tech companies seeking carbon-free baseload power for AI data centers, as these contracts will validate the business models driving current market enthusiasm.