Exhibit 99.1 Immunomedics Announces Second Quarter Fiscal 2004 Results MORRIS PLAINS, N.J., Feb. 9 /PRNewswire-FirstCall/ -- Immunomedics, Inc. (Nasdaq: IMMU) today reported revenues of $1.1 million and a net loss of $4.9 million, or $0.10 per share, for the second quarter of fiscal year 2004 which ended December 31, 2003. This compares to revenues of $3.1 million and a net loss of $1.8 million, or $0.04 per share, for the same period last year. For the first half of fiscal year 2004, the Company reported revenues of $2.2 million and a net loss of $10.0 million, or $0.20 per share, which ended December 31, 2003. This compares to revenues of $6.4 million and a net loss of $4.7 million, or $0.09 per share, for the same period last year. The decline in revenues for the three and six-month periods ended December 31, 2003, resulted primarily from the Company recognizing its final portion of the $18.0 million up-front licensing payment from Amgen in the third quarter of fiscal year 2003. At December 31, 2003, the Company had $21.1 million in cash and liquid securities, including $5.7 million of restricted securities associated with the New Jersey Economic Development Authority financing completed for construction of expanded manufacturing facilities. Mr. Gerard G. Gorman, the Company's Vice President, Finance, and Chief Financial Officer, commented: "We are pleased to report that the results for the first half of the fiscal year were in line with our expectations. In early January 2004, we added $10 million to our cash reserves through a private sale of convertible debt securities. We will continue to consider opportunities to raise additional capital through further licensing of our products and technologies, the sale of debt and/or equity securities, or some combination of the foregoing as they arise." During the second quarter of fiscal 2004, the Company entered into a research collaboration with Schering AG (FSE: SCH; NYSE: SHR) of Berlin, Germany, involving bispecific antibody, pretargeting technologies for cancer therapy, being developed by IBC Pharmaceuticals, the Company's majority-owned subsidiary. Other developments of note during the second quarter of fiscal year 2004 were as follows: * Multiple presentations on the Company's potential humanized antibody-based products, which involve targeting CD22 (epratuzumab and 90Y-epratuzumab), CD20 (IMMU-106), and CD74 (IMMU-110) antigens expressed on various hematological cancers were given at the American Society of Hematology (ASH) meeting in December 2003. * The Company announced discussions with Amgen regarding return of North American and Australian development rights for epratuzumab, the Company's humanized monoclonal antibody therapeutic candidate. These discussions are nearing completion. * The Company reported on a new drug candidate, IMMU-110, which showed unexpectedly high efficacy in an animal model for human non- Hodgkin's lymphoma (NHL). This agent consists of the Company's humanized monoclonal antibody against the CD74 marker, conjugated with doxorubicin(TM), a well-known cancer drug. * The Company announced results from recent studies of its proprietary, humanized antibody, hRS7 (IMMU-112), which demonstrated that when the compound is labeled with iodine-131 using a new, residualizing method patented by Immunomedics, an almost ten-fold increase in tumor uptake and retention was observed in human breast cancer growing in mice, as compared to results obtained with the same antibody labeled with I-131 using the conventional labeling method. * The Company commenced Phase I clinical trials in Europe with its humanized CD20 monoclonal antibody (IMMU-106) in patients with NHL. * The Company commenced Phase I clinical trials in Europe with its humanized CD22 monoclonal antibody, epratuzumab, in patients with autoimmune disease. "The continued growth of our product pipeline with the discovery of new agents and the acceleration of potential products into the clinic are very positive developments for the Company," commented Company President and Chief Executive Officer, Cynthia L. Sullivan. "Our investments in research and development, including the addition of key personnel to our clinical research and operations departments and the expansion of our manufacturing capacity, continue to yield important advances for our Company," Ms. Sullivan added. Immunomedics is a biopharmaceutical company focused on the development, manufacture and commercialization of diagnostic imaging and therapeutic products for the detection and treatment of cancer and other serious diseases. Integral to these products are highly specific monoclonal antibodies and antibody fragments designed to deliver radioisotopes and chemotherapeutic agents to tumors and other sites of disease. Immunomedics has nine therapeutic product candidates in clinical development and has two marketed diagnostic imaging products. The most advanced therapeutic product candidates are LymphoCide(R) (epratuzumab), for which certain Phase II clinical trials for the treatment of non-Hodgkin's lymphoma have already been completed, and CEA-Cide(R) (labetuzumab), which is in Phase I/II clinical trials for the treatment of certain solid tumors. This release, in addition to historical information, contains forward- looking statements made pursuant to the Private Securities Litigation Reform Act of 1995. Such statements, including statements regarding clinical trials, involve significant risks and uncertainties and actual results could differ materially from those expressed or implied herein. Factors that could cause such differences include, but are not limited to, risks associated with new product development (including clinical trials outcome and regulatory requirements/actions), competitive risks to marketed products and availability of financing and other sources of capital, as well as the risks discussed in the Company's Annual Report on Form 10-K for the year June 30, 2003. Company Contact: Gerard G. Gorman, Vice President, Finance, and Chief Financial Officer, (973) 605-8200, extension 278. Visit the Company's web site at http://www.Immunomedics.com IMMUNOMEDICS, INC. Condensed Consolidated Balance Sheets December 31, June 30, 2003 2003 ASSETS Current Assets: Cash and cash equivalents $8,274,043 $13,601,627 Marketable securities 7,097,903 10,194,813 Restricted securities 1,275,200 1,381,466 Accounts receivable 1,059,964 930,134 Inventory 680,440 839,480 Other current assets 1,680,266 825,372 20,067,816 27,772,892 Property and equipment, net 11,821,388 12,298,971 Restricted Cash 4,463,200 4,994,534 Other long-term assets 79,388 63,157 $36,431,792 $45,129,554 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities $7,889,103 $5,997,212 Long-term debt 4,463,200 4,994,534 Minority interest 427,058 471,044 Stockholders' equity 23,652,431 33,666,764 $36,431,792 $45,129,554 Condensed Consolidated Statements of Operations Three Months Ended Six Months Ended December 31, December 31, 2003 2002 2003 2002 Revenues: Product sales $932,232 735,813 1,737,052 1,545,101 License fee and other revenues 74,639 2,388,466 405,960 4,785,778 Research & development 49,999 - 100,000 25,282 Revenues $1,056,870 3,124,279 2,243,012 6,356,161 Costs and Expenses 6,452,912 5,139,287 12,937,346 11,644,128 Operating Loss (5,396,042) (2,015,008) (10,694,334) (5,287,967) Interest and Other Income 136,953 289,746 310,441 630,836 Interest Expense (18,969) - (38,871) - Minority Interest 20,930 24,439 43,986 42,422 Foreign Currency Transaction (Loss) Gain 41,549 (83,710) 8,998 (55,976) Net Loss before Income Tax Benefit (5,215,579) (1,784,533) (10,369,780) (4,670,685) Income Tax (Provision) Benefit 357,737 - 329,037 - Net Loss $(4,857,842) (1,784,533) (10,040,743) (4,670,685) Net Loss per Common Share, Basic and Diluted $(0.10) (0.04) (0.20) (0.09) Weighted average number of common shares outstanding 49,883,193 49,877,736 49,882,378 49,877,590 SOURCE Immunomedics, Inc. -0- 02/09/2004 /CONTACT: Gerard G. Gorman, Vice President, Finance, and Chief Financial Officer, Immunomedics, Inc., +1-973-605-8200, ext. 278/ /Company News On-Call: http://www.prnewswire.com/comp/113121.html / /Web site: http://www.Immunomedics.com / (IMMU) CO: Immunomedics, Inc. ST: New Jersey IN: MTC HEA BIO SU: ERN