X0202 4 2004-11-17 1 0001091801 MARTHA STEWART LIVING OMNIMEDIA INC MSO 0001129787 VA PARTNERS LLC 435 PACIFIC AVENUE FOURTH FLOOR SAN FRANCISCO CA 94133 1 0 1 0 0001159187 UBBEN JEFFREY W 435 PACIFIC AVENUE, FOURTH FLOOR SAN FRANCISCO CA 94133 1 0 1 0 0000937541 KAMIN PETER H TWO INTERNATIONAL PLACE, 25TH FLOOR BOSTON MA 02110 0 0 1 0 Class A Common Stock 2004-11-17 4 S 0 1432500 19.67 D 1994283.35 I See Footnote Class A Common Stock 2004-11-18 4 S 0 262300 18.91 D 1731983.35 I See Footnote As General Partner of ValueAct Capital Master Fund, L.P. and ValueAct Capital Partners Co-Investors, L.P. The reported stock is owned directly by ValueAct Capital Master Fund, L.P., and ValueAct Capital Partners Co-Investors, L.P. and indirectly by VA Partners, LLC as general partner of ValueAct Capital Master Fund, L.P. and ValueAct Capital Partners Co-Investors, L.P. Jeffrey W. Ubben is a director of Martha Stewart Living Omnimedia, Inc. and Managing Member of VA Partners, LLC, the General Partner. Peter H. Kamin and George F. Hamel are Managing Members of VA Partners, LLC, the General Partner. The reporting persons disclaim beneficial ownership of the reported stock except to the extent of their pecuniary interest therein. Joint Filer Information Name: ValueAct Capital Master Fund, L.P. Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: VA Partners, LLC Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO) Date of Event Requiring Statement: November 17, 2004 Name: ValueAct Capital Partners Co-Investors, L.P. Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: VA Partners, LLC Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO) Date of Event Requiring Statement: November 17, 2004 Name: Jeffrey W. Ubben Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: VA Partners, LLC Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO) Date of Event Requiring Statement: November 17, 2004 Name: George F. Hamel, Jr. Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: VA Partners, LLC Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO) Date of Event Requiring Statement: November 17, 2004 Name: Peter H. Kamin Address: 435 Pacific Avenue, 4th Floor, San Francisco, CA 94133 Designated Filer: VA Partners, LLC Issuer and Ticker Symbol: Martha Stewart Living Omnimedia, Inc. (MSO) Date of Event Requiring Statement: November 17, 2004 VA PARTNERS, L.L.C. By: /s/ George F. Hamel, Jr. Managing Member 2004-11-19 VALUEACT CAPITAL MASTER FUND, L.P., BY VA PARTNERS, L.L.C., ITS GENERAL PARTNER By: /s/ George F. Hamel, Jr. Managing Member 2004-11-19 VALUEACT CAPITAL PARTNERS CO-INVESTORS, L.P., BY VA PARTNERS, L.L.C., ITS GENERAL PARTNER By: /s/ George F. Hamel, Jr. Managing Member 2004-11-19 By: /s/ Jeffrey W. Ubben 2004-11-19 By: /s/ George F. Hamel, Jr. 2004-11-19 By: /s/ Peter H. Kamin 2004-11-19