Saria Tseng

EVP & General Counsel Saria Tseng sold 7,565 shares of MPWR at $1,700.00 for $12,860,500.00

Saria Tseng, EVP & General Counsel of Monolithic Power Systems, sold 7,565 shares on 2026-05-27 at $1,700.00, reducing her holdings by 5.0% to 144,218 shares. The sale occurred when MPWR was trading near its 52-week high ($1,714.09), and the stock has since declined 8.6% to the current price of $1,566.21. Across her prior five sells at MPWR, none were well-timed at the 90-day horizon (all showed positive subsequent returns), and her cross-ticker track record shows a 0.00% well-timed rate on 20 prior sells with average 90-day returns of +36.2%, suggesting a consistent pattern of selling before rallies rather than downturns. Against the company's strong fundamentals—$804.2M quarterly revenue, +26.4% annual growth, and $193.2M net income—this sale by a senior legal executive, while modest in percentage terms, occurs in context of the stock's elevated valuation (P/E of 113.00) and near historical highs.

EVP General Counsel Saria Tseng sold 5,000 MPWR shares at $1,586.43 for $7.9M on 2026-05-22.

Saria Tseng sold 5,000 shares representing a 3.2% reduction of her 156,783-share position at $1,586.43 on 2026-05-22, generating $7,932,150.00 in proceeds. The insider retains substantial holdings of 151,783 shares post-transaction, suggesting continued equity exposure. Her five prior sales at MPWR (all on 2026-04-08) were followed by 90-day returns ranging from +25.8% to +31.3%, with none representing profitable exit timing (for sells, negative post-transaction returns indicate well-timed sales; her 0.00% same-ticker well-timed rate shows zero instances of selling before declines). The current price of $1,620.17 is -5.5% below the 52-week high of $1,714.09, and the stock has risen 2.0% over 30 days and 37.3% over 90 days—post-transaction the stock has continued to appreciate beyond the sale price.

MPWR EVP General Counsel Tseng Saria sells 8,963 shares across 10 transactions for $11,698,654.18

Tseng Saria, EVP & General Counsel of Monolithic Power Systems, executed 10 separate open-market sales totaling 8,963 shares for $11,698,654.18 on 2026-04-08, reducing his holdings to 156,983 shares (a 5.4% reduction from pre-transaction holdings). The sales span a blended average price of $1,305.22 across individual tranche prices ranging from $1,266.48 to $1,321.94. The current stock price of $1,353.85 is now 0.0% from the 52-week high, and the stock has appreciated 26.4% over the past 30 days and 41.2% over the past 90 days. Across his cross-ticker track record, Tseng has executed 20 prior open-market sales; his same-ticker history at MPWR shows 5 prior sales as of 2026-04-06, though outcomes on those are not yet measurable. Given the company's strong fundamentals (revenue of $737,176,000.00, net income of $178,274,000.00, annual revenue growth of +26.4%, and market cap of $66,498,404,300.00), this multi-tranche liquidation warrants observation but requires additional context to assess strategic intent.

EVP & General Counsel Saria sells 7,636 shares for $8.9M; stock up 23.6% in 30d and near 52-week high of $1312.94

Tseng Saria, EVP & General Counsel of Monolithic Power Systems, executed 8 separate sales totaling 7,636 shares for $8,918,434.08 on 2026-04-06, reducing holdings from 173,582 to 165,946 shares. The blended average sale price of $1,167.95 compares to a current price of $1,312.94, which is at the 52-week high; the stock has advanced +23.6% over 30 days and +36.9% over 90 days. Saria has 20 prior sells across his open-market history, though timing outcomes on those cross-ticker trades are not detailed in this record. The company reported latest-quarter revenue of $737,176,000.00 and net income of $178,274,000.00, with annual revenue growth of +26.4% and a P/E of 88.35. The multi-tranche structure and execution across a range of prices ($1,139.96–$1,179.50) is factual, though the strategic intent behind the timing relative to recent momentum is not determinable from the filing alone.

MPWR EVP & General Counsel sells 1,400 shares for $1.6M on 2026-04-01; retains 173.6K shares.

Tseng Saria, EVP & General Counsel of Monolithic Power Systems, executed 5 separate sales totaling 1,400 shares for $1,586,924.40 at a blended average price of $1,133.52 on 2026-04-01, reducing holdings by 0.8% to 173,582 shares. The transaction occurred near the 52-week high (9.2% below the peak of $1,231.95) against a backdrop of strong recent momentum: the stock gained 4.1% over 30 days and 19.5% over 90 days, and the company delivered robust fundamentals with $737.2M quarterly revenue, +26.4% annual growth, and $178.3M net income. However, the insider's cross-ticker track record shows poor sell timing: his prior 20 open-market sales averaged a +1.5% 30-day return and +31.2% 90-day return, with a well-timed rate of 0.00%, meaning the stock typically rose after he sold. His 5 prior same-ticker sales at MPWR (all on 2026-03-30) remain early in their outcome measurement windows. The transaction's modest 0.8% reduction in a large 173.6K-share position, combined with his historical pattern of poorly-timed sales and the stock's current strength, does not suggest material conviction in a near-term decline.

EVP & General Counsel Tseng Saria sells 25.7K shares for $25.9M across 8 transactions on 2026-03-30, reducing stake by 12.8%.

Tseng Saria, EVP & General Counsel at Monolithic Power Systems, executed 8 separate sales totaling 25.7K shares for $25.9M at prices ranging from $1,000.81 to $1,041.12 on 2026-03-30, reducing holdings from 200.7K to 175.0K shares (-12.8%). The transactions occurred at prices meaningfully above the current price of $1119.51, which is -9.1% from the 52-week high of $1231.95. Across the insider's cross-ticker track record, the average 90-day return following prior sells has been +31.4%, indicating that past sales preceded rallies rather than declines—a poorly-timed pattern (0.00% well-timed rate). At Monolithic Power Systems specifically, no measurable prior trade outcomes exist yet, leaving this sale's timing unanchored to historical performance at this ticker. With the stock trading at a 75.34 P/E and revenue growing at +26.4% annually, the sale's significance lies in the scale of the position reduction during a period of strong fundamental growth, though the absence of a 10b5-1 FLAG means discretionary intent cannot be ruled out.

EVP & General Counsel Tseng Saria sold 22,875 shares of MPWR for $26.8M at $1,171.16, retaining 200.6K shares post-transaction

Tseng Saria, EVP & General Counsel, executed a $26.8M sale of 22,875 shares at $1,171.16, reducing holdings by 10.2% to 200.6K shares. The sale occurred when MPWR stock was trading 7.1% below its 52-week high of $1229.82 and has appreciated 19.1% over the prior 30 days. MONOLITHIC POWER SYSTEMS shows solid fundamentals with $737.2M in latest quarterly revenue, $178.3M net income, and 21.2% annual revenue growth; the P/E of 28.87 reflects premium valuation. His prior five sales at MPWR (all on 2025-11-26) posted modest 30-day gains averaging around 2%, though 90-day outcomes remain unmeasurable for those earlier transactions. The current sale's timing relative to the stock's recent strength and the executive's continued substantial holdings warrant observation of subsequent filings to clarify whether this represents a one-time liquidation need or a pattern of reducing exposure in a richly-valued security.

EVP & General Counsel Tseng Saria sold 20,000 shares at blended $904.18 on 2025-11-25 ($18.1M)

Tseng Saria executed 19 separate sales totaling 20,000 shares for $18,083,638.33 on a single day, reducing her holdings by 9.6% from 207,331 to 187,331 shares. The multi-tranche structure and gradual price increments ($894.54 to $908.49) suggest a methodical execution rather than a single block trade. Against MPWR's current price of $928.17, the transactions occurred near the stock's recent weakness (down 15.2% over 30 days and 16.0% from its 52-week high of $1105.05), though the company maintains solid fundamentals with $737.2M quarterly revenue, +21.2% annual growth, and a 23.46 P/E ratio. Saria's cross-ticker track record shows marginal sell-timing (16.67% well-timed rate, average 90-day return -3.0%), but her same-ticker history at MPWR provides no measurable outcomes yet, limiting pattern comparison at this specific security.

MPWR EVP & General Counsel Tseng Saria sold 20,000 shares for $18.5M across 9 separate sales on 2025-11-26.

Tseng Saria, EVP & General Counsel of Monolithic Power Systems, executed 9 separate sales totaling 20,000 shares for $18,529,315.61 at prices ranging from $922.78 to $930.48, reducing her holdings by 10.7% from 187,331 to 167,331 shares. The sale occurred on 2025-11-26 when MPWR stock was trading at a blended average price of $926.47, with the current price at $928.17 now only 16.0% below the 52-week high of $1105.05. Across her entire cross-ticker open-market history, Tseng's 20 prior sells averaged a 30-day return of -19.8%, but her same-ticker history at MPWR shows 5 prior sales all executed on 2025-11-25 (outcomes not yet measurable). The company posted solid fundamentals with annual revenue growth of +21.2%, net income of $178,274,000.00, and a P/E of 23.46, though the stock is down 15.2% over the last 30 days.

EVP & General Counsel Tseng Saria sold 1,300 MPWR shares at $1,087.62 on 2025-10-24; follows recent sell cluster and comes as stock trades near 52-week highs.

Tseng Saria sold 1,300 shares (1.0% of pre-transaction holdings) for $1,413,906.00 as MPWR stock reached +0.0% from its 52-week high of $1,074.91. This sale occurs within a clustering of recent sells at this ticker: three sales between 2025-10-15 and 2025-10-16, followed by a sale on 2025-09-18, suggesting a pattern of sequential liquidation. His broader cross-ticker track record shows 20 prior sells with a 90d well-timed rate of 6.25%, indicating mixed timing quality historically, though his 90-day returns averaged positive (+11.6%), meaning he typically sold before rallies. At MPWR specifically, his one measurable prior sale (2024-11-08) was poorly timed, with a -13.6% decline occurring after the sale—the opposite of what his cross-ticker pattern would predict. The timing signal here is ambiguous: MPWR is at cyclical highs amid strong fundamentals (revenue growth +21.2%, P/E 27.66, $51.5B market cap), yet near-term selling momentum from this insider warrants observation.