Seraphin Luc, President and CEO of Rambus Inc. (RMBS), has demonstrated a consistent pattern of selling company shares over the past two years, with no recorded purchases in the same period. According to SEC Form 4 filings, Luc has executed 37 transactions totaling over $41.9 million in sales, all involving RMBS stock. The most significant disposals occurred on February 1, 2026, when Luc sold shares worth $10.5 million, and February 1, 2025, with sales totaling $7.7 million. Smaller but frequent sales took place throughout 2025 and 2026, including multiple transactions on March 2, 2026, ranging from $132,149 to $1.34 million.
The transactions suggest a steady divestment strategy rather than sporadic liquidation. Sales occurred in clusters—particularly in April 2025 and April 2024—with individual transactions often falling between $300,000 and $600,000. Notably, filings marked with code "F" (indicating transactions involving family trusts or controlled entities) accounted for the largest disposals, while standard sales ("S") were more frequent but smaller in scale. The absence of any buy transactions reinforces a clear directional bias toward reducing his RMBS holdings. While the reasons for these sales remain undisclosed, the pattern reflects a prolonged and methodical unwinding of Luc’s position in the company.
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