POWER INTEGRATIONS INC — Director's Dealing 2011

Dec 2, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: POWER INTEGRATIONS INC (POWI)
CIK: 0000833640
Period of Report: 2011-12-01

Reporting Person: TOMLIN JOHN (VP of Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-12-01	Common Stock	M	1639	$18.95	Acquired	24305	Direct
2011-12-01	Common Stock	S	1639	$35.0035	Disposed	22666	Direct
2011-12-01	Common Stock	M	2361	$21.14	Acquired	25027	Direct
2011-12-01	Common Stock	S	2361	$35.0035	Disposed	22666	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-12-01	Non-Qualified Stock Option (right to buy)	$18.95	M	1639	Disposed	2013-01-08	Common Stock (1639)	Direct
2011-12-01	Non-Qualified Stock Option (right to buy)	$21.14	M	2361	Disposed	2019-04-28	Common Stock (2361)	Direct

Footnotes

F1: The range of prices for the enclosed transactions were $34.53 to $35.21.

Upon request by the SEC staff, the issuer, or any security holder of the issuer we will provide full information regarding the number of shares sold at each separate price.

F2: This sale is pursuant to a 10B5-1 Sales Plan