MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2010

Feb 9, 2010

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2010-02-09

Reporting Person: Rao Meera (VP of Finance, Corp Controller)

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Non-Qualified Stock Option (right to buy)	$13.53	2016-01-05	Common Stock (70000)		Direct

Footnotes

F1: A total of 70,000 shares were granted on 1/5/2009. Twenty five percent (25%) of the shares vested twelve (12) months after the grant date, and 1/48th of the shares vest monthly thereafter.