MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2013

Feb 13, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2013-02-11

Reporting Person: Tseng Saria (VP & General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-02-11	Common Stock	A	45412.0	$0.0	Acquired	118562.0	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3000.0	Indirect

Footnotes

F1: 25% of the Restricted Stock Units shall vest at 1/8th quarterly following the Vesting Commencement Date, provided that the Grantee continues to be a Service Provider from the Grant Date through each applicable vesting date. Additionally, 75% of the Restricted Stock Units were granted and shall be subject to satisfaction of performance-based vesting criteria based on achievement of certain long term Company performance targets, as determined by the Compensation Committee of the Company, and additional time vesting subsequent to the achievement of those performance targets, provided that the Grantee continues to be a Service Provider from the grant date through each applicable vesting date.