POWER INTEGRATIONS INC — Director's Dealing 2011

Sep 1, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: POWER INTEGRATIONS INC (POWI)
CIK: 0000833640
Period of Report: 2011-08-31

Reporting Person: WALKER CLIFFORD (VP Corporate Development)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-08-31	Common Stock	M	5221	$14.82	Acquired	29709	Direct
2011-08-31	Common Stock	S	5221	$32.2213	Disposed	24488	Direct
2011-08-31	Common Stock	M	4779	$14.82	Acquired	29267	Direct
2011-08-31	Common Stock	S	4779	$32.2213	Disposed	24488	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-08-31	Non-Qualified Stock Option (right to buy)	$14.82	M	5221	Disposed	2012-02-21	Common Stock (5221)	Direct
2011-08-31	Non-Qualified Stock Option (right to buy)	$14.82	M	4779	Disposed	2012-02-21	Common Stock (4779)	Direct