X0202 4 2006-05-18 0 0000708850 DIONEX CORP /DE DNEX 0000903510 ANDERSON DAVID L 755 PAGE MILL ROAD, SUITE A-200 PALO ALTO CA 943041005 1 0 0 0 Common 2006-05-18 4 S 0 593 57.25 D 200480 I By Trust Common 2006-05-18 4 S 0 400 57.21 D 200080 I By Trust Common 2006-05-18 4 S 0 700 57.20 D 199380 I By Trust Common 2006-05-18 4 S 0 158 57.24 D 199222 I By Trust Common 2006-05-18 4 S 0 100 57.23 D 199122 I By Trust Common 2006-05-18 4 S 0 200 57.22 D 198922 I By Trust Common 2006-05-18 4 S 0 300 57.19 D 198622 I By Trust Common 2006-05-18 4 S 0 300 57.18 D 198322 I By Trust Common 2006-05-18 4 S 0 3417 57.17 D 194905 I By Trust Common 2006-05-18 4 S 0 500 57.14 D 194405 I By Trust Common 2006-05-18 4 S 0 600 57.05 D 193805 I By Trust Common 2006-05-18 4 S 0 100 56.91 D 193705 I By Trust Common 2006-05-18 4 S 0 77 56.87 D 193628 I By Trust Common 2006-05-18 4 S 0 1600 56.85 D 192028 I By Trust Common 2006-05-18 4 S 0 100 56.58 D 191928 I By Trust Common 2006-05-18 4 S 0 200 56.19 D 191728 I By Trust Common 2006-05-18 4 S 0 100 56.21 D 191628 I By Trust Common 2006-05-18 4 S 0 100 56.20 D 191528 I By Trust Common 2006-05-18 4 S 0 100 56.18 D 191428 I By Trust Common 2006-05-18 4 S 0 200 56.14 D 191228 I By Trust Common 2006-05-18 4 S 0 65 56.13 D 191163 I By Trust Common 2006-05-18 4 S 0 90 56.12 D 191073 I By Trust Shares held by a trust of which the reporting person is the trustee. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest in the trust. By: Robert Yin, by power of attorney 2006-05-22