X0202 4 2008-06-18 0 0000833640 POWER INTEGRATIONS INC POWI 0001182405 BALAKRISHNAN BALU 5245 HELLYER AVE SAN JOSE CA 95138 0 1 0 0 President and CEO Common Stock 2008-06-18 4 M 0 100 14.82 A 4452 D Common Stock 2008-06-18 4 S 0 100 34.96 D 4352 D Common Stock 2008-06-18 4 M 0 400 14.82 A 4752 D Common Stock 2008-06-18 4 S 0 400 34.96 D 4352 D Common Stock 2008-06-18 4 M 0 100 14.82 A 4452 D Common Stock 2008-06-18 4 S 0 100 34.97 D 4352 D Common Stock 2008-06-18 4 M 0 100 14.82 A 4452 D Common Stock 2008-06-18 4 S 0 100 34.98 D 4352 D Common Stock 2008-06-18 4 M 0 200 14.82 A 4552 D Common Stock 2008-06-18 4 S 0 200 34.99 D 4352 D Common Stock 232752 I by Trust Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 200 0 D 2002-02-21 2012-02-21 Common Stock 200 156472 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 300 0 D 2002-02-21 2012-02-21 Common Stock 300 156172 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 300 0 D 2002-02-21 2012-02-21 Common Stock 300 155872 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 400 0 D 2002-02-21 2012-02-21 Common Stock 400 155472 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 200 0 D 2002-02-21 2012-02-21 Common Stock 200 155272 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 200 0 D 2002-02-21 2012-02-21 Common Stock 200 155072 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 400 0 D 2002-02-21 2012-02-21 Common Stock 400 154672 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 400 0 D 2002-02-21 2012-02-21 Common Stock 400 154272 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 600 0 D 2002-02-21 2012-02-21 Common Stock 600 153672 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 3000 0 D 2002-02-21 2012-02-21 Common Stock 3000 150672 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 200 0 D 2002-02-21 2012-02-21 Common Stock 200 150472 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 500 0 D 2002-02-21 2012-02-21 Common Stock 500 149972 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 400 0 D 2002-02-21 2012-02-21 Common Stock 400 149572 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 300 0 D 2002-02-21 2012-02-21 Common Stock 300 149272 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 400 0 D 2002-02-21 2012-02-21 Common Stock 400 148872 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 100 0 D 2002-02-21 2012-02-21 Common Stock 100 148772 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 400 0 D 2002-02-21 2012-02-21 Common Stock 400 148372 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 100 0 D 2002-02-21 2012-02-21 Common Stock 100 148272 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 100 0 D 2002-02-21 2012-02-21 Common Stock 100 148172 D Non-Qualified Stock Option (right to buy) 14.82 2008-06-18 4 M 0 200 0 D 2002-02-21 2012-02-21 Common Stock 200 147972 D This sale is pursuant to a 10B5-1 Sales Plan By: /s/ Robert Lelieur Attorney-In-Fact For: Balu Balakrishnan 2008-06-18