Exhibit 99.1 During the question and answer period of DDR's second quarter conference call held on August 1, 2003, a reference was made to the non-GAAP financial measure of Same Store Net Operating Income ("NOI") for the six-months ended June 30, 2003. The following is the relevant part of the conference call: Q: Jim Sullivan (Prudential Securities): Thank you, good morning. I had to break off a bit during Dan's prepared comments so I might have missed it. Dan, did you give the same comparison in the quarter? A. Daniel Hurwitz (DDR): No, but Bill will. Q. Jim Sullivan: Another Schafer question. A. William Schafer (DDR): Same store NOI was 2.4%. - -------------------------------- The Company discloses financial conditions and results of operations based upon the growth in core properties, acquisition and development. The Company generally defines core properties as those shopping centers owned as of January 1, 2001, excluding those under development. We utilize and believe that same store NOI, a non-GAAP financial measure, is a good indicator in determining the growth in the Company's core assets. DEVELOPERS DIVERSIFIED REALTY Quarterly Financial Supplement For the six months ended June 30, 2003 RECONCILIATION OF SUPPLEMENTAL NON-GAAP FINANCIAL MEASURES (Dollars in thousands) (Unaudited) TABLE 1 - DEVELOPERS DIVERSIFIED REALTY CORPORATION AND THE COMPANY'S JOINT VENTURES COMBINED Reconciliation of Same Store Net Operating Income (NOI) to Total Revenues and Certain Expenses Six Month Period Ended June 30 2003 2002 --------- --------- Total Revenues DDR $ 226,552 $ 169,718 Total Revenues DDR Combined Joint Ventures 127,456 109,435 Operating and Maintenance - DDR (28,320) (19,133) Real Estate Taxes - DDR (26,524) (20,748) Operating and Maintenance - DDR Combined Joint Ventures (47,577) (37,144) --------- --------- COMBINED NOI $ 251,587 $ 202,128 ========= ========= Total Same Store NOI $ 138,873 $ 135,590 2.4% Property NOI from other operating segments 112,714 66,538 --------- --------- COMBINED NOI $ 251,587 $ 202,128 ========= =========