Officer Saria Tseng Files Intent to Sell $11.7M in Shares Amidst Ongoing Insider Distribution
MPWR has more than doubled off its 52-week low of $438.86.
Summary
An officer at Monolithic Power Systems has filed to sell $11.7 million in shares, adding to a pattern of substantial insider selling, which may be viewed negatively given the stock's high valuation and recent financial issues.
Key Events · Ownership and Investor Activity · MPWR
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Officer Files Intent to Sell Shares
Saria Tseng, an Officer, filed a Form 144 to sell 8,964 shares of common stock, valued at approximately $11.7 million.
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Follows Significant Recent Sales
This proposed sale adds to Tseng's prior sales of 57,586 shares, totaling over $63 million, within the last three months.
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Part of Broader Insider Distribution
The filing contributes to a pattern of net insider distribution totaling over $326 million from five active insiders in the last 90 days.
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Occurs Near 52-Week High
The intent to sell comes as the company's stock is trading near its 52-week high, potentially indicating executives are locking in gains.
Analysis · MPWR · Manufacturing
Saria Tseng, an Officer at Monolithic Power Systems, has filed a Form 144 indicating an intent to sell approximately $11.7 million worth of common stock. This proposed sale follows a pattern of significant insider selling, with Tseng having already sold over $63 million in shares in the past three months. The filing occurs while the stock is trading near its 52-week high and in the broader context of recent negative financial news, including a material restatement and CFO departure. This continued distribution by an executive could signal a lack of confidence or a desire to lock in gains.
How filings like this one have moved
In the 30 days to Oct 5, 2026, 29.2% of the 1498 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.63%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, MPWR was trading at $1,312.94 on NASDAQ in the Manufacturing sector, with a market capitalization of approximately $64.5B. The 52-week trading range was $438.86 to $1,322.62. This filing was assessed with negative market sentiment and an importance score of 7 out of 10.