X0202 4 2007-03-19 1 0001003113 MOLECULAR DEVICES CORP MDCC 0001234058 MCCONNELL HARDEN M 1311 ORLEANS DRIVE SUNNYVALE CA 94089 1 0 0 0 Common Stock 2007-03-19 4 U 0 176400 35.5000 D 32400.0000 I By Trust Common Stock 2007-03-19 4 U 0 10000 35.5000 D 22400.0000 I By Trust Common Stock 2007-03-19 4 U 0 11200 35.5000 D 11200.0000 I By Trust Common Stock 2007-03-19 4 U 0 11200 35.5000 D 0.0000 I By Trust Tendered to Monument Acquisition Corp., an indirect wholly owned subsidiary of MDS Inc., in response to the tender offer made under the Agreement and Plan of Merger, dated as of January 28, 2007, by and among Molecular Devices Corporation, MDS Inc. and Monument Acquisition Corp By Harden M and Sophia G McConnell TTEES of The Harden M and Sophia G. McConnell Trust DTD 3/29/82 By the Hunter McConnell Irrevocable Trust U/A DTD 12/21/99 By the Jane McConnell 1999 Irrevocable Trust U/A DTD 12/21/99 By the Trevor McConnell 1999 Irrevocable Trust U/A DTD 12/21/99 /s/ McConnell, Harden 2007-03-21