Notice of Proposed Sale · 144

Power Integrations, Inc.

POWINASDAQEQUITYCurrent

Notice of Proposed Sale

Filed May 28, 2026Accepted May 28, 2026, 4:07 PM EDTFiling CIK 833640Accession 0001950047-26-005191

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Structured filing — 144

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer: POWER INTEGRATIONS, INC.
Issuer CIK: 0000833640
SEC file number: 000-23441
Phone: (408) 414-9200
Person for whose account securities are to be sold: BALU & MOHINI BALAKRISHNAN FAM TR
Relationships to issuer: Officer · Director
Street: 5245 Hellyer Avenue
City: San Jose
State / country code: CA
Postal code: 95138-1002

Securities proposed for sale

Securities proposed for sale · 1 reported row
Security	Proposed units	Aggregate market value	Units outstanding	Approximate sale date	Exchange	Broker / market maker
Common	124,287	10,743,132.98	55,719,984	05/28/2026	NASDAQ	Morgan Stanley Smith Barney LLC Executive Financial Services

Broker / market maker — proposed row 1, entry 1

Name: Morgan Stanley Smith Barney LLC Executive Financial Services
Street: 1 New York Plaza
Street (continued): 8th Floor
City: New York
State / country code: NY
Postal code: 10004

Acquisition of securities to be sold

Acquisition of securities to be sold · 18 reported rows
Security	Acquired	Nature of acquisition	Acquired from	Amount acquired	Gift transaction	Payment date	Nature of payment
Common	02/12/2019	Restricted stock vesting under a registered plan	Issuer	13,718	N	02/12/2019	Services Rendered
Common	02/09/2023	Restricted stock vesting under a registered plan	Issuer	3,199	N	02/09/2023	Services Rendered
Common	04/01/2024	Restricted stock vesting under a registered plan	Issuer	5,363	N	04/01/2024	Services Rendered
Common	05/04/2017	Restricted stock vesting under a registered plan	Issuer	8,951	N	05/04/2017	Services Rendered
Common	02/13/2018	Restricted stock vesting under a registered plan	Issuer	11,680	N	02/13/2018	Services Rendered
Common	02/12/2019	Restricted stock vesting under a registered plan	Issuer	11,984	N	02/12/2019	Services Rendered
Common	02/12/2019	Restricted stock vesting under a registered plan	Issuer	12,128	N	02/12/2019	Services Rendered
Common	02/04/2020	Restricted stock vesting under a registered plan	Issuer	5,359	N	02/04/2020	Services Rendered
Common	02/04/2020	Restricted stock vesting under a registered plan	Issuer	6,296	N	02/04/2020	Services Rendered
Common	02/04/2020	Restricted stock vesting under a registered plan	Issuer	5,254	N	02/04/2020	Services Rendered
Common	02/01/2021	Restricted stock vesting under a registered plan	Issuer	4,856	N	02/01/2021	Services Rendered
Common	02/01/2021	Restricted stock vesting under a registered plan	Issuer	4,708	N	02/01/2021	Services Rendered
Common	02/01/2021	Restricted stock vesting under a registered plan	Issuer	4,657	N	02/01/2021	Services Rendered
Common	02/02/2022	Restricted stock vesting under a registered plan	Issuer	4,996	N	02/02/2022	Services Rendered
Common	02/02/2022	Restricted stock vesting under a registered plan	Issuer	5,383	N	02/02/2022	Services Rendered
Common	02/09/2023	Restricted stock vesting under a registered plan	Issuer	4,868	N	02/09/2023	Services Rendered
Common	02/09/2023	Restricted stock vesting under a registered plan	Issuer	4,859	N	02/09/2023	Services Rendered
Common	04/01/2024	Restricted stock vesting under a registered plan	Issuer	6,028	N	04/01/2024	Services Rendered

Sales reported in the preceding three months

Sales reported in the preceding three months · 2 reported rows
Seller	Security	Sale date	Amount sold	Gross proceeds
BALU & MOHINI BALAKRISHNAN FAM TR	Common	05/26/2026	118,573	9,690,467.31
BALU & MOHINI BALAKRISHNAN FAM TR	Common	05/21/2026	53,880	3,810,032.60

Seller — prior-sale row 1, entry 1

Name: BALU & MOHINI BALAKRISHNAN FAM TR
Street: 5245 Hellyer Avenue
City: San Jose
State / country code: CA
Postal code: 95138-1002

Seller — prior-sale row 2, entry 1

Name: BALU & MOHINI BALAKRISHNAN FAM TR
Street: 5245 Hellyer Avenue
City: San Jose
State / country code: CA
Postal code: 95138-1002

Prior-sale reporting

Nothing to report for the preceding three months: N

Notice signature

Notice date: 05/28/2026
Signed: /s/ Balu Balakrishnan, Trustee

Company context

Power Integrations, Inc. is a leading innovator in semiconductor technologies for high-voltage power conversion. The company’s products are key building blocks in the clean-power ecosystem, enabling the generation of renewable energy as well as the efficient transmission and consumption of power in applications ranging from milliwatts to megawatts. For more information, please visit www.power.com.

Current securities

POWINASDAQ · EQUITY · Current

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