POWER INTEGRATIONS INC — Director's Dealing 2017

Feb 2, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: POWER INTEGRATIONS INC (POWI)
CIK: 0000833640
Period of Report: 2017-02-01

Reporting Person: Bailey Doug (VP Marketing)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-02-01	Common Stock	S	532	$71.1142	Disposed	22828	Direct
2017-02-01	Common Stock	A	4912	$0.0	Acquired	27740	Direct
2017-02-01	Common Stock	M	2000	$21.14	Acquired	29740	Direct
2017-02-01	Common Stock	S	2000	$71.3	Disposed	27740	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-02-01	Non-Qualified Stock Option (right to buy)	$21.14	M	2000	Disposed	2019-04-28	Common Stock (2000)	Direct

Footnotes

F1: Represents the automatic sale of stock to cover the tax liability associated with the vesting of a Restricted Stock Award.

F2: For fiscal year 2016, the reporting person was granted a Performance Stock Unit. The Performance Stock Unit vests based on Power Integrations satisfaction of certain performance conditions. The performance conditions for 2016 were met, resulting in vesting of the Performance Stock Unit.

F3: This sale is pursuant to a 10B5-1 Sales Plan