Power Integrations Inc.

POWI·NASDAQ·$84.09Share Price as of 11/2·$5BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/06/26 10-QQ1 ended 03/31/2605/07/26 10-KFY 202502/06/26 10-QQ3 ended 09/30/2511/05/25 10-QQ2 ended 06/30/2508/06/25

Disclosures

8-KCurrent report08/14/26 8-KCurrent report08/05/26 8-KCurrent report06/04/26 8-KCurrent report05/07/26 8-KCurrent report02/05/26

Prospectuses and Registrations

S-8Registration of securities for employees08/06/26 S-8Registration of securities for employees01/30/26 S-8Registration of securities for employees11/25/25 S-8Registration of securities for employees07/29/21 S-8Registration of securities for employees07/25/19

Proxies

DEF 14ADefinitive proxy04/21/26 DEFA14AAdditional proxy materials04/21/26 DEF 14ADefinitive proxy03/31/25 DEFA14AAdditional proxy materials03/31/25 PRE 14APreliminary proxy03/19/25

Ownership

Form 3Initial insider ownership07/31/26 Form 4Insider transaction07/27/26 Form 4Insider transaction07/06/26 Form 4Insider transaction07/06/26 Form 4Insider transaction07/06/26

Other

SDConflict Minerals disclosure05/14/26 ARSAnnual report to shareholders04/21/26 SDConflict Minerals disclosure05/16/25 ARSAnnual report to shareholders03/31/25 SDConflict Minerals disclosure05/03/24