X0201 4 2003-08-22 0 0000352789 IOMEGA CORP IOM 0001228713 DUNN DAVID J 9255 TOWNE CENTRE DRIVE #925 SAN DIEGO CA 92121 1 0 0 0 Common 2003-08-22 4 M 0 80 10.98 A 485483 I By Family Trust Common 2003-08-22 4 M 0 80 8.2 A 485563 I By Family Trust Common 2003-08-22 4 M 0 80 6.88 A 485643 I By Family Trust Common 2003-08-22 4 M 0 80 5.73 A 485723 I By Family Trust Common 2003-08-22 4 M 0 80 6.64 A 485803 I By Family Trust Common 2003-08-22 4 M 0 80 6.83 A 485883 I By Family Trust Common 2003-08-22 4 M 0 80 8.48 A 485963 I By Family Trust Common 2003-08-22 4 M 0 80 9.23 A 486043 I By Family Trust Common 2003-08-22 4 M 0 33 10.435 A 486076 I By Family Trust Common 2003-08-22 4 M 0 33 10.205 A 486109 I By Family Trust Common 2003-08-22 4 M 0 33 10.705 A 486142 I By Family Trust Common 2003-08-22 4 M 0 33 9.8 A 486175 I By Family Trust Common 2003-08-22 4 M 0 33 9.4 A 486208 I By Family Trust Common 2003-08-22 4 M 0 33 7.73 A 486241 I By Family Trust Common 2003-08-22 4 M 0 33 9.655 A 486274 I By Family Trust Common 2003-08-22 4 M 0 33 10.43 A 486307 I By Family Trust Common 2006054 I By Idanta Partners Common 480 I By spouse Common 10.98 2003-08-22 4 M 0 80 0 D 2011-04-23 Common 80 120 D Common 8.2 2003-08-22 4 M 0 80 0 D 2011-04-23 Common 80 120 D Common 6.88 2003-08-22 4 M 0 80 0 D 2011-04-23 Common 80 120 D Common 5.73 2003-08-22 4 M 0 80 5.73 D 2011-04-23 Common 80 120 D Common 6.64 2003-08-22 4 M 0 80 0 D 2011-04-23 Common 80 120 D Common 6.83 2003-08-22 4 M 0 80 0 D 2011-04-23 Common 80 120 D Common 8.48 2003-08-22 4 M 0 80 0 D 2011-04-23 Common 80 120 D Common 9.23 2003-08-22 4 M 0 80 0 D 2011-04-23 Common 80 120 D Common 10.435 2003-08-22 4 M 0 33 0 D 2012-04-22 Common 33 133 D Common 10.205 2003-08-22 4 M 0 33 0 D 2012-04-22 Common 33 133 D Common 10.705 2003-08-22 4 M 0 33 0 D 2012-04-22 Common 33 134 D Common 9.8 2003-08-22 4 M 0 33 0 D 2012-04-22 Common 33 134 D Common 9.4 2003-08-22 4 M 0 33 0 D 2012-04-22 Common 33 134 D Common 7.73 2003-08-22 4 M 0 33 0 D 2012-04-22 Common 33 134 D Common 9.655 2003-08-22 4 M 0 33 0 D 2012-04-22 Common 33 134 D Common 10.43 2003-08-22 4 M 0 33 0 D 2012-04-22 Common 33 134 D This option vests at 20% per annum on the anniversary of the original grant. The aggregate holdings of the Dunn Family Trust include the 904 shares issued on the exercise of options reported herein and contributed to the Dunn Family Trust. Pursuant to General Instruction 4(b)(iv), the undersigned, Trustee of the Trust which is a general partner of Idanta Partners, Ltd. ("Idanta"), is reporting the entire amount of Idanta's holdings of securities of the Company. The undersigned disclaims beneficial ownership of all but his proportionate interest in such securities. Pursuant to General Instruction 4(b)(iv) of Form 4, the undersigned is reporting the entire amount of his wife's holdings of securities of the Company and disclaims beneficial ownership of these securities. David J. Dunn 2003-08-26