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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
833640	Power Integrations Inc	POWI	Semiconductors & Related Devices (3674)	943065014

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1583135	Mh David Matthews	5245 Hellyer Ave San Jose CA 95138	Vp Of Product Development	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2019-02-12	8,700	$0.00	57,842	No	4	A	Direct
Common Stock	Acquisiton	2019-02-13	1,320	$0.00	59,162	No	4	A	Direct
Common Stock	Acquisiton	2019-02-13	5,224	$0.00	64,386	No	4	A	Direct
Common Stock	Disposition	2019-02-14	611	$70.53	63,775	No	4	S	Direct
Common Stock	Disposition	2019-02-14	1,825	$70.53	61,950	No	4	S	Direct
Common Stock	Disposition	2019-02-14	734	$70.53	61,216	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	A	Direct
No	4	A	Direct
No	4	A	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Footnotes

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 2018 were met.
Represents the automatic sale of stock to cover the tax liability associated with the vesting of a Performance Stock Unit.
Represents the automatic sale of stock to cover the tax liability associated with the vesting of a Restricted Stock Award.