X0609 4 2026-05-26 0 0000833640 POWER INTEGRATIONS INC POWI 0001680974 Gupta Sunil false 5245 HELLYER AVE SAN JOSE CA 95138 0 1 0 0 Sr. Vice President, Operations 0 Common Stock 2026-05-26 4 S 0 15894 82.1848 D 71239 D The price reported is a weighted average price. These shares were sold in multiple transactions at sale prices ranging from $82.04 to $82.49. The Reporting Person undertakes to provide the full information regarding the number of shares sold at each separate price upon further request. By: /s/ Eric Verity Attorney In Fact For: Sunil Gupta 2026-05-28