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Monolithic Power Systems Inc.

Monolithic Power Systems Inc. (MPWR) — Form SCHEDULE 13G/A: Ownership over 5% (passive) (amendment)

SC 13G/AMPWRFiled Nov 5, 2026, 1:22 PM ET

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FMR LLC filed an amendment reporting ownership of 4,450,333.75 shares of Monolithic Power Systems Inc. common stock, representing a 9.1 stake as of 09/30/2026. Abigail P. Johnson is also included in the filing.

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Not investment advice. Summaries can contain errors; the SEC filing is the official record.