Form 4: Monolithic Power Systems EVP Transfers Shares Between Family Trusts

Maurice Sciammas, EVP of WW Sales & Marketing at Monolithic Power Systems, reported a non-sale transfer of 4,530 common shares between family trusts.

Summary

• Maurice Sciammas, Executive Vice President of Worldwide Sales & Marketing at Monolithic Power Systems Inc. (MPWR), reported a transaction on November 13, 2025.
• 4,530 shares of Monolithic Power Systems common stock were transferred between family trusts.
• The shares were moved from two Sciammas Grantor Retained Annuity Trusts (GRATs) to the Sciammas Family Trust.
• Maurice Sciammas serves as a Trustee for both the transferring GRATs and the receiving Sciammas Family Trust.
• No funds were exchanged, and no sale of shares occurred as part of this transfer, with a reported price of $0 per share.
• Following the transaction, beneficial ownership includes 26,660 shares indirectly through various Sciammas GRATs and 49,460 shares indirectly through the Sciammas Family Trust.
• Direct beneficial ownership for Maurice Sciammas remains at 183,306 shares.
• Additional indirect beneficial ownership is held through various other family trusts and brokerage accounts, totaling 18,111 shares across multiple entities.

Sentiment

Score: 5

Explanation: Neutral, as this is a routine reporting of an internal transfer of shares between family trusts by an executive, with no market impact or change in overall beneficial ownership for the executive.

Industry Context

This filing reports a routine insider transaction involving the transfer of shares between family trusts by an executive. It does not provide information related to broader industry trends or competitive landscape.

Related Party Transactions

• Maurice Sciammas, an executive, transferred 4,530 shares of common stock between family trusts where he serves as a Trustee, specifically from two Sciammas GRATs to the Sciammas Family Trust. This represents an internal family transfer without exchange of funds.

Stakeholder Impact

• Minimal impact on shareholders as this is an internal transfer of shares between family trusts by an executive, not a market sale or purchase. There is no change in the executive's overall beneficial interest in the company, only a reallocation among family entities.

Key Dates

Keywords

Monolithic Power Systems, MPWR, Maurice Sciammas, insider transaction, Form 4, beneficial ownership, trust transfer, executive stock