MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2012

Feb 16, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2012-02-14

Reporting Person: CHANG KUO WEI HERBERT (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-14	Common Stock	A	4835.0	$0.0	Acquired	91035.0	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	31189.0	Indirect

Footnotes

F1: According to the Company's 2004 Equity Incentive Plan and the Board Compensation Schedule as adopted by the Board on February 7, 2012, each Outside Director will be automatically granted Restricted Stock Units as of such date, if he or she will have served on the Board for at least the preceding six (6) months, with such grant to be effective as of the first day that the Company's trading window re-opens (or as of the date of the meeting of the Board or Compensation Committee, as applicable, if the Company's trading window is open on such date), subject to the Outside Director's continued service to the Board through such date.

F2: Reporting person is the partner of InveStar Capital, Inc. Mr. Chang retains beneficial ownership of these shares, but disclaims the economic benefit except to his pecuniary interests, if any.