Hsing Michael

CEO Hsing Michael sold 40,000 shares of MPWR for $59,310,168.55 across 13 transactions on 2026-05-18

CEO Hsing Michael executed 13 separate sales totaling 40,000 shares for $59,310,168.55 on 2026-05-18, reducing holdings from 888,263 to 848,263 shares. The transaction occurred at prices ranging from $1,462.61 to $1,521.43, with a blended average of $1,482.75, while the current price stands at $1,553.27. Examining his same-ticker history at MPWR reveals 5 prior sales on 2026-02-12, none of which were well-timed at the 90-day mark—all generated positive average 90-day returns of +35.6% to +42.3%, indicating the stock subsequently rose after those sales. His cross-ticker track record shows 20 prior sells with a 0.00% well-timed rate at 90 days and an average 90-day return of +37.8%, further indicating a pattern where his prior sales have been followed by stock appreciation rather than declines.

CEO Hsing Michael sold 33,000 shares ($38.7M) across 12 transactions on 2026-02-12, following 5 sales on 2026-02-11; shares fell 4.6% from 52-week high.

CEO Michael Hsing executed 12 separate sales totaling 33,000 shares for $38,670,257.41 on 2026-02-12, one day after 5 additional sales on 2026-02-11. The magnitude is substantial—this represents a -3.6% reduction in his post-transaction holdings of 888,234 shares. The transaction prices ranged from $1,155.71 to $1,217.12, with a blended average of $1,171.83, while the current price stands at $1,173.18, placing the stock -4.6% from its 52-week high of $1,229.82. The company's fundamentals remain strong, with Revenue of $737,176,000.00, Net income of $178,274,000.00, and annual revenue growth of +21.2%, though the P/E of 29.66 reflects market expectations. The consecutive sales over two trading days, combined with the 30-day price appreciation of +13.6% and 90-day appreciation of +32.6%, warrant attention to whether this represents a planned divestiture or a response to valuation momentum.

MPWR CEO Hsing Michael sells 33,000 shares ($39.2M) on 2026-02-11 at blended avg $1,188.92

On 2026-02-11, CEO Hsing Michael executed 10 separate sales totaling 33,000 shares for $39,234,211.79 at prices ranging from $1,158.71 to $1,202.28, with a blended average price of $1,188.92. This represents a -3.5% reduction from his pre-transaction holdings of 954,234 shares to a post-transaction level of 921,234 shares, occurring while MPWR trades near its 52-week peak (currently $1,171.47, -4.7% from the $1229.82 high) and amid strong recent momentum (+19.1% over 30 days, +27.3% over 90 days). The company's fundamentals remain solid with annual revenue growth of +21.2%, quarterly revenue of $737,176,000.00, and a P/E of 29.61. The multi-tranche structure and scale of this sale—occurring near all-time highs with the stock up substantially in recent months—warrants examination of whether this reflects a material view shift or standard diversification by a long-tenured executive.

CEO Hsing Michael sold 34,000 shares of MPWR for $38.8M across 9 transactions on Feb 10, reducing holdings by 3.4%

CEO Hsing Michael executed 9 separate sales totaling 34,000 shares for $38,837,435.26 at a blended average price of $1,142.28, reducing his holdings from 988.2K to 954.2K shares. The multi-tranche execution across price points ranging from $1,132.01 to $1,197.26 reflects a structured liquidation rather than a single-block transaction. The stock currently trades at $1155.93, near the top of its 52-week range ($455.19–$1229.82), having risen 25.6% over the prior 90 days and 17.6% over 30 days—positioning this sale at elevated valuation levels. The company's fundamentals remain robust: revenue of $737.2M in the latest quarter, net income of $178.3M, annual revenue growth of 21.2%, and a market cap of $55.4B, though the P/E of 29.22 reflects premium pricing. While Michael's cross-ticker track record shows 20 prior sells, measurable outcomes for his same-ticker activity at MPWR are not yet available, making it difficult to assess the timing accuracy of his historical sales at this security.

CEO Hsing Michael sold 54.9K shares of MPWR at $1,171.16 for $64.3M on 2026-02-06, reducing holdings to 988.2K shares.

CEO Hsing Michael sold 54,923 shares at $1,171.16, a price near the top of the 52-week range of $455.19–$1229.82 (the transaction occurred at -7.1% from the 52-week high). The sale occurred during strong momentum, with the stock up 19.1% over 30 days and 19.2% over 90 days. This represents his third consecutive open-market sale at MPWR within 4 trading days (5 total prior transactions at this ticker), following similar sales on 2026-02-10 with outcomes not yet measurable. Across his broader cross-ticker trading history, his 20 prior sells have returned an average of +17.8% over 90 days (average 90d well-timed rate 0.00%), indicating a pattern of selling before rallies rather than declines. The company remains fundamentally strong with 21.2% annual revenue growth and a P/E of 28.87.

CEO Hsing Michael sold 40,000 MPWR shares for $38.3M via 17 separate transactions on 2025-11-11

CEO Michael Hsing executed 17 separate sales totaling 40,000 shares for $38,335,721.29 on a single date, reducing his holdings by 4.0% to 955,669 shares post-transaction. The blended average sale price was $958.39, representing a 3.7% premium to the current price of $924.29, suggesting the CEO exited ahead of near-term price softness. The cross-ticker track record shows prior sells averaged -0.3% over 30 days and +10.5% over 90 days with a 0.00% well-timed rate, indicating historically poor timing on sell decisions. The stock has declined 4.5% over the past 30 days and sits 16.4% below its 52-week high, potentially validating this sale's timing despite the unfavorable historical pattern.

CEO Michael Hsing sells 37,000 MPWR shares for $35.7M ($965.52 avg) on 2025-11-12, reducing stake 3.9%

Hsing Michael, CEO of Monolithic Power Systems, executed 19 separate sales totaling 37,000 shares for $35,724,379.66 on 2025-11-12, with a blended average price of $965.52. This represents a -3.9% reduction in his post-transaction holdings of 918,669 shares. The transaction occurred at prices near the 52-week high of $1105.05 (current price $924.29 is -16.4% from that peak). The multi-tranche structure with prices advancing from $957.58 to $980.06 suggests methodical execution rather than a single discretionary decision. His cross-ticker track record shows 20 prior sells with a 0.00% well-timed rate, indicating his prior sell decisions have not preceded stock declines; at MPWR specifically, his 5 prior sells from 2025-11-11 have outcomes not yet measurable. The company's fundamentals remain solid with annual revenue growth of +21.2%, net income of $178,274,000.00, and a P/E of 23.36, providing no obvious deterioration signaling imminent trouble.

CEO Hsing Michael sells 20,231 MPWR shares for $16,773,550.18 across 11 tranches on 2025-08-15

CEO Hsing Michael executed 11 separate sales totaling 20,231 (20.2K shares) for $16,773,550.18 on 2025-08-15, representing a -2.4% reduction in his holdings to 814,667 shares. The transactions were priced between $825.69 and $836.40 with a blended average of $829.10, while the stock currently trades at $850.31—positioned 10.2% below its 52-week high of $947.16 but up 17.2% over the past 30 days and 21.4% over 90 days. His prior five sales at MPWR show a timing pattern of 4 of 5 well-timed at the 90-day mark, though this history reflects periods of stock decline following his exits. Given the company's strong fundamentals—$664.6M quarterly revenue, 21.2% annual revenue growth, $133.7M net income, and a 21.88 P/E ratio—the near-$17M liquidation warrants observation of his forward actions and any commentary on business conditions, particularly given the recency and scale of this sale in the context of his demonstrated historical timing pattern.

CEO Hsing Michael sold 5,200 shares of MPWR at $700.00 (2025-02-18); holds 834,898 shares post-sale

Hsing Michael executed a sale of 5,200 shares for $3,640,000.00, representing a 0.6% reduction in his 834.9K share post-transaction holdings. The stock currently trades at $689.81, down 27.2% from its 52-week high of $947.16, though it has gained 8.0% over the past 30 days and 18.8% over 90 days. Notably, this is the third sale by this CEO in February 2025 alone (following sales on 2025-02-10 and 2025-02-07), suggesting an ongoing liquidation pattern rather than an isolated rebalancing. While his cross-ticker track record shows a 100.00% well-timed rate on 20 prior sales, his MPWR-specific pattern offers limited forward guidance, with only 2 measurable outcomes at this ticker showing 90-day well-timed timing. The company trades at a P/E of 77.51 with modest revenue growth of 1.5%, warranting closer attention to whether these successive sales reflect a broader conviction shift or routine portfolio activity.

MPWR CEO sold 2,594 shares at $717.10 (Feb 10); stock now $699.46, down 26.2% from 52-week high.

Michael Hsing sold 2,594 shares at $717.10, representing a -0.3% reduction in his 842.7K-share holdings. The stock has appreciated 19.1% over the prior 30 days and 21.3% over 90 days since transaction, yet remains 26.2% below its 52-week high of $947.16. His prior trades at MPWR (3 measurable outcomes) show a 100% well-timed rate at the 90-day mark, though those earlier sells occurred in August and November 2024, both producing negative 90-day returns. His cross-ticker track record spans 20 prior sells with a 100% well-timed rate, averaging -2.8% and -7.9% returns at 30 and 90 days respectively. The fundamental backdrop shows revenue of $620.1M (latest quarter) with modest +1.5% annual growth, a P/E of 78.59, and market cap of $34.1B. The minimal sale size (-0.3% of holdings) against the backdrop of strong recent appreciation and elevated valuation multiples warrants monitoring of subsequent insider activity to assess whether further liquidation signals a sustained reassessment.