Form 4: Monolithic Power Systems Exec Reports Share Transfers

Monolithic Power Systems EVP Maurice Sciammas reported non-sale transfers of common stock to various trusts and family accounts.

Summary

• Maurice Sciammas, EVP, WW Sales & Marketing of Monolithic Power Systems Inc (MPWR), reported changes in beneficial ownership of common stock.
• On August 19, 2025, 1,000 shares were distributed from the Peter Rafferty and Eric Toothill 2021 Irrevocable Trust, where Mr. Sciammas is a Trustee, to an individual not an immediate family member. Mr. Sciammas has no management, investment control, or pecuniary interest over these shares.
• On August 19, 2025, 1,499 shares were distributed from the Sciammas Siblings 2021 GRATs, where Mr. Sciammas is a Trustee, to the Rosalind Sciammas brokerage account.
• Concurrently, 1,499 shares were received by the Rosalind Sciammas brokerage account from the Sciammas Siblings 2021 GRATs.
• No funds were exchanged, and no sale of shares occurred in any of these transfers.
• Following these transactions, Mr. Sciammas directly owns 102,325 shares of Common Stock.
• Indirect beneficial ownership includes 1,000 shares via Peter Rafferty and Eric Toothill 2021 Trust, 12,228 shares via Various Sciammas GRATs, 1,499 shares via Rosalind Sciammas Brokerage Account, 44,930 shares via Sciammas Family Trust, 1,699 shares via The Chloe Liliane Sciammas 2020 Irrevocable Trust, 1,699 shares via The Patrick Francis Sciammas 2020 Irrevocable Trust, 1,699 shares via The Joseph Roger Sciammas 2020 Irrevocable Trust, 2,000 shares via Rosalind Sciammas Family 2021 Trust, 5,000 shares via Clement Sciammas Family 2021 Trust, 9,481 shares via Maurice Sciammas Trust FBO Oski Crew, 9,481 shares via Christina Sciammas Trust FBO Oski Crew, 1,499 shares via Clement Sciammas Brokerage Account, and 4,015 shares via Sciammas Trust 2020.

Sentiment

Score: 5

Explanation: This is a routine insider transaction report detailing non-sale transfers of shares, which typically has a neutral sentiment as it does not indicate positive or negative company performance or strategic shifts.

Future Outlook

NA

Industry Context

This filing is a routine disclosure of insider share transactions and does not provide information related to broader industry trends or competitor analysis.

Related Party Transactions

• Transfers of shares to various family trusts and brokerage accounts, including Sciammas Siblings 2021 GRATs, Rosalind Sciammas brokerage account, Sciammas Family Trust, and other Sciammas family trusts.

Stakeholder Impact

• Shareholders: Minimal direct impact as these are non-sale transfers and do not affect the company's outstanding share count or market capitalization.
• Reporting Person and Related Parties: Affects the beneficial ownership structure and distribution of shares among the reporting person's family and associated trusts.

Key Dates

Keywords

Monolithic Power Systems, MPWR, SEC Form 4, Insider Transaction, Share Transfer, Maurice Sciammas, Beneficial Ownership