Three Executives of U.S. Semiconductor Stocks Sell Large Shares Near Price Peak

On May 4 and 6, three senior executives at Monolithic Power Systems Inc. (Nasdaq: MPWR)—including the vice president of sales and marketing and the vice president of global operations—sold a combined total of about 70,000 shares of the company’s common stock on the open market, raising roughly USD 115 million (approximately KRW 160 billion) in cash. Two of those executives still hold hundreds of thousands of shares directly and indirectly through family and trust accounts, while the third has reduced their stake to just a few thousand shares after selling most of their holdings.

Meanwhile, U.S. law firm Rosen announced on May 12 that it has launched an investigation into possible breaches of fiduciary duty by Monolithic’s directors and officers, underscoring growing legal risk. In its first-quarter 2026 results released on April 30, the company reported mid-20% year-over-year revenue growth driven by data-center and communications demand, and it has strengthened its shareholder‐return policy this year by raising its quarterly dividend to USD 2 per share. (chartmill.com)

Monolithic Power Systems is a Nasdaq-listed, fabless designer of power-management semiconductors, supplying high-performance power-management chips for servers, data centers, communications networks, automotive applications and industrial electronics. Since its founding in 1997 by CEO Michael H. Hsing, the company has been recognized for system-level power-efficiency improvements and has benefited from rising AI and cloud-infrastructure demand, delivering strong financial growth and a sharp increase in its share price in recent years. (nasdaq.com)