Sciammas Maurice

EVP Sciammas sold 12,000 shares at blended $1,561.40 on 2026-05-15 via 10b5-1 plan

Maurice Sciammas, EVP of Worldwide Sales & Marketing, executed 8 separate sales totaling 12,000 shares for $18,736,849.52 under a pre-arranged 10b5-1 trading plan. The scheduled nature of the transaction removes timing as an inference variable. His prior sales at MPWR over recent months (November–February 2026) showed 90-day returns of +33.2% to +34.6%, indicating the stock generally moved upward following his sales. This filing reduces his holding from 178,644 to 166,644 shares (-6.7%). The company trades at a P/E of 105.92 on $804.2M quarterly revenue with +26.4% annual growth, reflecting elevated valuation in a high-growth category; the current price of $1,468.11 is -12.4% from the 52-week high of $1,675.42.

EVP Sciammas sells 22,875 shares ($26.8M) of MPWR at $1,171.16; retains 178,625 shares post-sale

Sciammas Maurice, EVP of WW Sales & Marketing, executed an open-market sale of 22,875 shares on 2026-02-06 at $1,171.16, reducing his position by 11.4% but retaining substantial holdings of 178,625 shares. The sale value of $26,790,369.64 reflects meaningful capital disposition while maintaining significant ongoing equity stake in a company with strong fundamentals (revenue $737.2M, net income $178.3M, P/E 28.87, annual growth +21.2%). His prior five sales at MPWR across November 2025 generated 30-day returns ranging from +6.4% to +8.2%, establishing a pattern of sales that were followed by near-term gains; notably, no prior sells at this ticker have yet shown measurable 90-day outcomes (all from November 2025). The current stock price of $1,142.02 sits 2.5% below his transaction price and 7.1% below the 52-week high, providing context for valuation near the point of execution.

EVP Sciammas sells 3,976 MPWR shares at $895.23; retains 144,330 shares post-sale

Sciammas Maurice, EVP of Worldwide Sales & Marketing at Monolithic Power Systems, executed a sale of 3,976 shares for $3,559,434.48 on 2025-11-24, reducing his holdings by 2.7% to 144,330 shares. This sale occurred five days after four other sales on 2025-11-19, part of a broader liquidation pattern with no measurable outcomes yet. His cross-ticker track record shows 20 prior sells, but his MPWR-specific timing outcomes remain inconclusive. The stock has declined 15.5% in the past 30 days and sits 17.8% below its 52-week high of $1105.05, despite the company's strong fundamentals: $737.2M in latest quarterly revenue, $178.3M net income, and 21.2% annual revenue growth with a P/E of 22.97.

EVP Sciammas Maurice sold 7,034 shares ($6.1M) in 12 transactions at $870.21 average; stock now $857.19 (-22.4% from 52-week high).

Sciammas Maurice, EVP of WW Sales & Marketing, executed 12 separate sales totaling 7,034 shares for $6,121,059.06 at a blended average price of $870.21 on 2025-11-19, reducing his holdings by -3.8% to 176,272 shares. The transaction occurred during a pronounced drawdown: the stock has fallen 16.7% in the prior 30 days and trades 22.4% below its 52-week high of $1,105.05, though fundamentals remain solid with annual revenue growth of +21.2%, net income of $178,274,000.00, and a P/E of 21.67. Across his cross-ticker history, Sciammas achieved a 90-day well-timed sell rate of 87.50%, but this signal is limited by sample size and is not yet measurable at the 90-day horizon for this specific filing. The large dollar volume and multiple-transaction format warrants observation of whether the sales reflect a broader strategic reassessment at the company or are isolated portfolio activity.

EVP Maurice Sciammas sells 27,966 shares of MPWR in 12 transactions for $24,656,386.86 on 2025-11-19

Maurice Sciammas, EVP of Worldwide Sales & Marketing at Monolithic Power Systems, executed 12 separate open-market sales totaling 27,966 shares for $24,656,386.86 on 2025-11-19, reducing his holdings by 15.9% from 176,272 to 148,306 shares. The sales occurred across a narrow price range of $875.26–$884.44 (blended average $881.66), all on a single day at prices that stand 2.9% above the current market price of $857.19, placing them near the 52-week high of $1,105.05. While Sciammas' cross-ticker track record shows a 87.50% well-timed sell rate on the 90-day horizon (averaging -13.0% 30d and -15.1% 90d returns), the stock is currently trading -16.7% down over the prior 30 days and has declined -22.4% from its 52-week high, suggesting the execution occurred at a relative local peak. The company has strong current fundamentals (P/E 21.67, $737.2M quarterly revenue, net income $178.3M, +21.2% annual growth), and the absence of FLAGS indicates this is discretionary open-market activity, not a pre-arranged trading plan.

EVP Sciammas Maurice sold 12,000 MPWR shares ($8.4M) on 2025-05-12 at $701.00; reduces stake 74.9%; prior 5 MPWR trades all well-timed on 90-day basis.

Sciammas Maurice, EVP of Worldwide Sales & Marketing at Monolithic Power Systems, sold 12,000 shares worth $8,412,000.00 on 2025-05-12 at $701.00, reducing his holdings from 16,015 shares to 4,015 shares (a 74.9% reduction). His 5 prior sales at MPWR all generated negative 90-day returns ranging from -8.7% to -33.2%, with a 100% well-timed rate across these same-ticker transactions. Over a broader cross-ticker history, his 20 prior open-market sells averaged a 90-day return of -17.4% with a 75.00% well-timed rate, indicating a consistent pattern of selling before declines. The stock has gained 33.0% over the past 30 days but remains 25.1% below its 52-week high of $947.16. This large concentrated sale occurs within a fundamentally strong context—$637.6M quarterly revenue, 21.2% annual growth, and a P/E of 18.58—providing no obvious distress signal, yet the insider's historical pattern of sale timing suggests he perceived value risk at the current $701.00 price level.

EVP Maurice Sciammas sold 7,000 shares of MPWR for $4.9M on 2025-02-07; prior MPWR sales perfectly timed with all 5 showing -15.2% to -16.0% 30d declines.

Maurice Sciammas, EVP of WW Sales & Marketing at Monolithic Power Systems, executed 4 separate sales totaling 7,000 shares for $4,913,851.67 at blended average price $701.98, reducing his holdings by 30.4% from 23,015 to 16,015 shares. His prior trading history at MPWR is highly notable: all 5 prior trades at this ticker were sells executed on 2024-10-07, each followed by 30-day declines ranging from -15.2% to -16.0% and 90-day declines ranging from -33.1% to -33.7%—a 100% well-timed pattern at the 90-day mark. His cross-ticker track record shows 20 prior sells with a 55.00% well-timed rate (average 90d return -13.4%), establishing consistent sell timing discipline. The current transaction follows this established pattern of reducing exposure, though near-term 30-day market price action (+18.2% over the past month) has moved opposite the historical post-sale direction.

EVP Sciammas sells 11,000 MPWR shares for $10.2M at $929.59 avg; retains 103.8K shares post-sale

Maurice Sciammas, EVP of WW Sales & Marketing, executed 11 separate sales totaling 11,000 shares for $10,225,484.52 on 2024-10-07 at prices ranging from $922.72 to $935.00, reducing his holdings from 114.8K to 103.8K shares (-9.6%). The sales occurred near MPWR's 52-week high of $947.16 (current price $923.14 is -2.5% from that peak), and the 30-day post-transaction price momentum has been +14.5%. Across his cross-ticker open-market history, Sciammas's 20 prior sells achieved a 90-day well-timed rate of 0.00%, meaning none of his prior open-market sales preceded subsequent stock declines; his same-ticker history at MPWR shows 0 of 4 prior sells were well-timed at the 90-day horizon. The filing discloses a substantial dollar liquidation by an executive responsible for worldwide sales and marketing, though without a 10b5-1 flag or stated rationale, the motivation remains unspecified.

EVP Maurice Sciammas sold 3,205 shares of MPWR at $831.58 on 2024-07-22; stock now at $787.88, down 11.4% from 52-week high.

Sciammas executed a sale of 3,205 shares for $2,665,213.90, reducing his holdings from 118,876 to 115,671 shares (a reduction of -2.7%). The transaction occurred at $831.58, which was near the stock's 52-week high of $889.48. Since the sale, MPWR has declined to $787.88, representing a -5.2% move from the transaction price. Notably, this sale occurred just two weeks after five prior sales on 2024-07-08, suggesting a pattern of liquidation activity. His cross-ticker track record shows a 0.00% well-timed rate on 20 prior sells (with an average 90-day return of +23.2%), indicating he has historically sold into strength rather than before declines. While fundamentals show a large market cap of $38,347,695,360.00 with quarterly revenue of $457,885,000.00 and net income of $92,541,000.00, the stock's elevated P/E of 93.46 and recent price weakness merit monitoring.

EVP Maurice Sciammas sold 10,999 shares at $843.83 avg for $9.3M on 2024-07-08; stock now at 52-week high

Maurice Sciammas, EVP of WW Sales & Marketing, executed 10 separate sales totaling 10,999 shares for $9,281,284.51 on July 8, 2024, reducing his holdings by 8.5% to 118,876 shares. The sales occurred across a narrow price range of $839.89 to $848.48 with a blended average of $843.83, and the stock now trades at $860.81—essentially at its 52-week high of $860.81. At MPWR specifically, Sciammas has a prior track record: all 5 previous sales resulted in positive 90-day returns (ranging from +22.0% to +25.8%), meaning the stock rose after each sale—a pattern that shows 0 of 5 as well-timed (insider sold before gains, not declines). The current sale occurs amid a 52-week rally that has delivered +10.4% over 30 days and +25.8% over 90 days, though MPWR trades at a elevated P/E of 102.11 relative to its modest 1.5% annual revenue growth.