Saria Tseng's Securities Transactions in Monolithic Power Systems, Inc.

Saria Tseng, an officer of Monolithic Power Systems, Inc., has filed a Form 144 notice indicating the intent to sell securities. The filing details the acquisition of 4,715 and 9,313 common shares on 12/31/2023 and 01/01/2024, respectively, as performance shares. Additionally, Tseng sold 14,510 common shares on 09/18/2025, generating gross proceeds of $13,268,669.50. The notice was signed on 10/15/2025, and the plan adoption date was 08/30/2024. The aggregate market value of the securities to be sold is $14,254,973.04, with 47,892,000 common shares outstanding. The transactions were facilitated by Morgan Stanley Smith Barney LLC Executive Financial Services.