Nuclear SMR Insiders Go Aggressive: OKLO and SMR Flooded with Ownership Changes

What's happening

SEC filings reveal concentrated insider activity at two leading small modular reactor companies during April 2026. At OKLO, CEO Jacob DeWitte and COO Caroline Cochran each sold 200,000 shares for $10.07 million at $50.35 per share on April 1, while CFO Richard Craig Bealmear sold 16,342 shares for $834,749 at $51.08 per share. The company simultaneously filed an 8-K on April 14 announcing board expansion to 11 members with four new independent directors appointed April 10, while Patrick J. Schweiger transitioned to an advisory role.

NuScale Power experienced larger-scale divestment as major shareholder Fluor Corp executed three substantial sales: 13.5 million shares for $162.9 million at $12.07 per share on April 9, 12.94 million shares for $150.4 million at $11.63 per share on April 15, and 13.5 million shares for $159.4 million at $11.81 per share on April 21. NuScale filed an 8-K on April 8 scheduling its Q1 2026 earnings call for May 7.

Why it matters for markets

The transaction patterns reveal divergent capital dynamics within the SMR sector's $16.17 billion combined market capitalization. OKLO's $20.97 million in executive sales represents routine liquidity events at current valuations, occurring alongside governance expansion that typically signals growth preparation. However, OKLO insiders have sold $50.86 million worth of shares over the past 90 days, representing significant position reduction relative to the company's $12.24 billion market cap.

Fluor Corp's $472.76 million divestment from NuScale represents a major ownership restructuring, with the engineering giant reducing its stake in the $3.93 billion SMR developer. The sales occurred at prices ranging from $11.63 to $12.07 per share, well below NuScale's 52-week high of $57.42, suggesting strategic portfolio rebalancing rather than distressed selling. The timing ahead of NuScale's May 7 earnings call indicates Fluor's exit was planned rather than earnings-driven.

Sectors and assets to watch

The nuclear energy sector faces differentiated investor positioning as OKLO trades at $70.40 with a $12.24 billion valuation supported by its Aurora microreactor technology, while NuScale trades at $12.14 with a $3.93 billion market cap anchored by its NRC-certified 77 MWe power modules. OKLO's 215-employee operation focuses on 1.5-15 MWe deployments for data centers and industrial users, contrasting with NuScale's 428-employee organization targeting utility-scale 924 MWe VOYGR plants.

Broader nuclear infrastructure beneficiaries include uranium suppliers, reactor component manufacturers, and specialized engineering firms supporting SMR deployment. The insider activity patterns suggest institutional confidence in long-term nuclear demand while highlighting near-term valuation concerns, particularly for NuScale following its decline from 52-week highs.

What to watch next

NuScale's Q1 2026 earnings call on May 7 will provide critical insight into operational progress and financial positioning following Fluor's major divestment. Monitor whether OKLO's board expansion leads to strategic announcements or partnership developments, and track additional Form 4 filings to determine if insider selling continues or stabilizes at current levels.