1 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarter Ended March 31, 2000 Commission File No. 000-29089 ANTIGENICS INC. (Exact Name of Registrant as Specified in its Charter) DELAWARE 06-1562417 (State of Incorporation) (I.R.S. Employer Identification Number) 630 FIFTH STREET, SUITE 2100, NEW YORK , NEW YORK, 10111 (Address of Principal Executive Offices) (212) 332-4774 (Registrant's Telephone Number, including Area Code) Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YES [X] NO [_] Number of shares outstanding of the registrant's Common Stock as of May 10, 2000: Common Stock, par value $.01 24,777,845 shares outstanding

2 ANTIGENICS INC. QUARTER ENDED MARCH 31, 2000 TABLE OF CONTENTS PART I - FINANCIAL INFORMATION Page ---- Item 1 - Unaudited Financial Statements Balance Sheets (Unaudited) December 31, 1999 and March 31, 2000........................ 2 Statements of Operations (Unaudited) For the Three months ended March 31, 1999 and 2000 and for the period from March 31, 1994 (date of inception) to March 31, 2000........................................... 3 Statements of Stockholders' Equity (Unaudited) For the Three Months ended March 31, 2000 and for the period from March 31, 1994 (date of inception) to March 31, 2000.............................................. 4 Statements of Cash Flows (Unaudited) For the Three months ended March 31, 1999 and 2000 and for the period from March 31, 1994 (date of inception) to March 31, 2000........................................... 5 Notes to Unaudited Financial Statements.......................... 6 Item 2 - Management's Discussion and Analysis of Financial Condition and Results of Operations............... 8 Item 3 - Quantitative and Qualitative Disclosures About Market Risk................................................. 11 PART II - OTHER INFORMATION Item 1 - Legal Proceedings............................................. 12 Item 2 - Use of Proceeds............................................... 12 Item 3 - Defaults Upon Senior Securities............................... 12 Item 4 - Submission of Matters to a Vote of Security Holders........... 12 Item 5 - Other Information............................................. 12 Item 6(a) - Exhibits................................................... 12 Item 6(b) - Reports on Form 8-K........................................ 12 Signatures ............................................................ 13

3 PART I - FINANCIAL INFORMATION Item 1 - Unaudited Financial Statements ANTIGENICS INC. (a development stage company) Balance Sheets December 31, 1999 and March 31, 2000 MARCH 31, DECEMBER 31, 2000 1999 (UNAUDITED) ------------ ------------- ASSETS Cash and cash equivalents $ 46,417,942 109,388,844 Prepaid expenses 103,204 493,064 Deferred public offering costs 559,417 -- Due from related party 240 -- Other assets 591,134 625,694 ------------ ------------- Total current assets 47,671,937 110,507,602 Plant and equipment, net 8,034,598 8,067,952 Other assets 297,646 448,522 ------------ ------------- Total assets $ 56,004,181 119,024,076 ============ ============= LIABILITIES AND STOCKHOLDERS' EQUITY Accounts payable $ 424,673 1,055,351 Accrued liabilities 933,440 696,243 Due to related party -- 7,079 Current portion, long-term debt 812,702 842,654 ------------ ------------- Total current liabilities 2,170,815 2,601,327 Long-term debt 2,155,005 1,932,510 Commitments and contingencies Stockholders' Equity: Preferred stock, par value $0.01 per share; 1,000,000 shares authorized; no shares issued and outstanding -- -- Common stock, par value $0.01 per share; 100,000,000 shares authorized; 20,715,942 and 24,777,246 shares issued and outstanding at December 31, 1999 and March 31, 2000, respectively 207,159 247,772 Additional paid-in capital 89,747,036 157,966,997 Deferred compensation (659,081) (1,744,581) Deficit accumulated during development stage (37,616,753) (41,979,949) ------------ ------------- Total stockholders' equity 51,678,361 114,490,239 ------------ ------------- Total liabilities and stockholders' equity $ 56,004,181 $ 119,024,076 ============ ============= See accompanying notes to unaudited financial statements. -2-

4 ANTIGENICS INC. (a development stage company) Statements of Operations For the three months ended March 31, 1999 and 2000, and for the period from March 31, 1994 (date of inception) to March 31, 2000 (unaudited) MARCH 31, 1994 (date of Three months ended March 31, inception) to --------------------------------- March 31, 1999 2000 2000 ------------ ----------- ----------- Revenue $ -- -- -- Expenses: Research and development: Related party (8,250) (13,268) (85,898) Other (2,490,609) (3,354,599) (25,796,423) ------------ ----------- ----------- (2,498,859) (3,367,867) (25,882,321) General and administrative: Related party (44,227) (75,185) (1,344,740) Other (1,224,658) (1,626,685) (16,246,991) ------------ ----------- ----------- (1,268,885) (1,701,870) (17,591,731) Depreciation and amortization (79,361) (359,793) (2,061,551) ------------ ----------- ----------- Operating loss (3,847,105) (5,429,530) (45,535,603) Other income/(expense): Non-operating income -- -- 259,988 Interest expense (35,632) (105,781) (397,178) Interest income 252,625 1,172,115 3,692,844 ------------ ----------- ----------- Net loss $ (3,630,112) (4,363,196) (41,979,949) ============ =========== =========== Net loss per share, basic and diluted $ (0.20) (0.19) ============ =========== Weighted average number of shares outstanding, basic and diluted 17,902,617 22,990,922 ============ =========== See accompanying notes to unaudited financial statements. -3-

5 ANTIGENICS INC. (a development stage company) Statements of Stockholders' Equity For the three months ended March 31, 2000 and the period from March 31, 1994 (date of inception) to March 31, 2000 (unaudited) COMMON STOCK --------------------------------- ADDITIONAL SUBSCRIPTION PAID- NOTES NUMBER OF SHARES PAR VALUE IN CAPITAL RECEIVABLE ---------------- --------- ---------- ---------- Balance at March 31, 1994 -- $ -- -- Net loss -- -- -- Issuance of common stock to founders during 1994, for cash, $.03 per share 11,216,590 112,166 287,844 -- ----------- ----------- ------------ ----------- Balance at December 31, 1994 11,216,590 112,166 287,844 -- Net loss -- -- -- Issuance of common stock in connection with the recapitalization in December 1995, $1.45 per share 1,032,202 10,322 1,489,678 (150,000) Grant of common stock 1,513,896 15,139 2,184,861 -- ----------- ----------- ------------ ----------- Balance at December 31, 1995 13,762,688 137,627 3,962,383 (150,000) Net loss -- -- -- Deferred compensation on stock options -- -- 781,200 -- Grant and recognition of stock options -- -- 1,116,815 -- Payment of subscription notes receivable -- -- -- 150,000 Issuance of common stock in private placement from March 13, 1996 to December 31, 1996, $6.50 per share 1,636,383 16,364 10,583,636 (250,000) ----------- ----------- ------------ ----------- Balance at December 31, 1996 15,399,071 153,991 16,444,034 (250,000) Net loss -- -- -- Payment of subscription notes receivable -- -- 250,000 Deferred compensation on stock options -- -- 144,004 -- Grant and recognition of stock options -- -- 62,815 -- Issuance of common stock in private placement from September 8, 1997 to December 31, 1997, $11.17 per share 660,953 6,609 7,378,391 -- ----------- ----------- ------------ ----------- Balance at December 31, 1997 16,060,024 160,600 24,029,244 -- Net loss -- -- -- -- Deferred compensation on stock options -- -- 493,701 -- Grant and recognition of stock options -- -- 838,654 -- Exercise of stock options 38,536 385 249,615 -- Issuance of common stock in private placement from January 1, 1998 to December 31, 1998, $11.17 per share 1,797,063 17,971 20,059,014 (2,102,000) ----------- ----------- ------------ ----------- Balance at December 31, 1998 17,895,623 178,956 45,670,228 (2,102,000) Net loss -- -- -- -- Payment of subscription notes receivable -- -- -- 2,102,000 Deferred compensation on stock options -- -- 354,009 -- Grant and recognition of stock options -- -- 4,718,582 -- Exercise of stock options 1,720 17 83 -- Issuance of common stock in private placement in January 1999, $11.17 per share 9,806 98 109,902 -- Issuance of common stock and warrants in private placement on November 31, 1999, $13.96 per share (net of issuance costs of $293,000) 2,808,793 28,088 38,894,232 -- ----------- ----------- ------------ ----------- Balance at December 31, 1999 20,715,942 207,159 89,747,036 -- Net loss -- -- -- -- Deferred compensation on stock options -- -- 1,213,214 -- Grant and recognition of stock options and warrants -- -- 741,694 -- Exercise of stock options and warrants 36,304 363 76,142 -- Issuance of common stock in IPO on February 9, 2000, $18 per share (net of issuance costs of $6,220,839) 4,025,000 40,250 66,188,911 -- ----------- ----------- ------------ ----------- Balance at March 31, 2000 24,777,246 $ 247,772 157,966,997 -- =========== =========== ============ =========== DEFICIT ACCUMULATED DURING DEFERRED DEVELOPMENT COMPENSATION STAGE TOTAL ----------- ----------- ------------ Balance at March 31, 1994 -- -- -- Net loss -- (183,440) (183,440) Issuance of common stock to founders during 1994, for cash, $.03 per share -- -- 400,010 ----------- ----------- ------------ Balance at December 31, 1994 -- (183,440) 216,570 Net loss -- (3,226,579) (3,226,579) Issuance of common stock in connection with the recapitalization in December 1995, $1.45 per share -- -- 1,350,000 Grant of common stock -- -- 2,200,000 ----------- ----------- ------------ Balance at December 31, 1995 -- (3,410,019) 539,991 Net loss -- (3,345,898) (3,345,898) Deferred compensation on stock options (781,200) -- -- Grant and recognition of stock options 347,200 -- 1,464,015 Payment of subscription notes receivable -- -- 150,000 Issuance of common stock in private placement from March 13, 1996 to December 31, 1996, $6.50 per share -- -- 10,350,000 ----------- ----------- ------------ Balance at December 31, 1996 (434,000) (6,755,917) 9,158,108 Net loss -- (3,832,527) (3,832,527) Payment of subscription notes receivable -- -- 250,000 Deferred compensation on stock options (144,004) -- -- Grant and recognition of stock options 188,373 -- 251,188 Issuance of common stock in private placement from September 8, 1997 to December 31, 1997, $11.17 per share -- -- 7,385,000 ----------- ----------- ------------ Balance at December 31, 1997 (389,631) (10,588,444) 13,211,769 Net loss -- (8,904,032) (8,904,032) Deferred compensation on stock options (493,701) -- -- Grant and recognition of stock options 269,787 -- 1,108,441 Exercise of stock options -- -- 250,000 Issuance of common stock in private placement from January 1, 1998 to December 31, 1998, $11.17 per share -- -- 17,974,985 ----------- ----------- ------------ Balance at December 31, 1998 (613,545) (19,492,476) 23,641,163 Net loss -- (18,124,277) (18,124,277) Payment of subscription notes receivable -- -- 2,102,000 Deferred compensation on stock options (354,009) -- -- Grant and recognition of stock options 308,473 -- 5,027,055 Exercise of stock options -- -- 100 Issuance of common stock in private placement in January 1999, $11.17 per share -- -- 110,000 Issuance of common stock and warrants in private placement on November 31, 1999, $13.96 per share (net of issuance costs of $293,000) -- -- 38,922,320 ----------- ----------- ------------ Balance at December 31, 1999 (659,081) (37,616,753) 51,678,361 Net loss -- (4,363,196) (4,363,196) Deferred compensation on stock options (1,213,214) -- -- Grant and recognition of stock options and warrants 127,714 -- 869,408 Exercise of stock options and warrants -- -- 76,505 Issuance of common stock in IPO on February 9, 2000, $18 per share (net of issuance costs of $ 6,220,839) -- -- 66,229,161 ----------- ----------- ------------ Balance at March 31, 2000 (1,744,581) (41,979,949) 114,490,239 =========== =========== ============ See accompanying notes to unaudited financial statements. -4-

6 ANTIGENICS INC. (a development stage company) Statements of Cash Flows For the three months ended March 31, 1999 and 2000 and for the period from March 31, 1994 (date of inception) to March 31, 2000 (unaudited) MARCH 31, 1994 (DATE OF INCEPTION) TO MARCH 31, MARCH 31, ----------------------------- 1999 2000 2000 ------------ ------------ ------------ Cash flows from operating activities: Net loss $ (3,630,112) (4,363,196) (41,979,949) Adjustments to reconcile net loss to net cash used in operating activities: Depreciation and amortization 79,361 359,793 2,061,551 Stock options, warrants and Predecessor Company stock options 1,085,562 869,408 8,720,107 Common stock grant -- -- 2,200,000 Changes in operating assets and liabilities: Other assets (30,156) (185,436) (1,074,216) Prepaid assets (45,512) (389,860) (493,064) Organization costs -- -- (32,934) Accounts payable 291,812 630,678 1,055,351 Accrued liabilities 39,244 (237,197) 696,243 Due to/from related party, net (33,418) 7,319 7,079 ------------ ------------ ------------ Net cash used in operating activities (2,243,219) (3,308,491) (28,839,832) ------------ ------------ ------------ Cash flows from investing activities: Purchase of plant and equipment (2,908,451) (393,147) (10,128,511) Proceeds from the sale of plant and equipment -- -- 31,942 ------------ ------------ ------------ Net cash used in investing activities (2,908,451) (393,147) (10,096,569) ------------ ------------ ------------ Cash flows from financing activities: Net proceeds from sale of equity 110,000 66,788,578 145,223,476 Subscriptions receivable 2,102,000 -- -- Exercise of stock options and warrants -- 76,505 326,605 Proceeds from long-term debt 260,071 -- 3,480,542 Payments of long-term debt (52,000) (192,543) (705,378) ------------ ------------ ------------ Net cash provided by financing activities 2,420,071 66,672,540 148,325,245 ------------ ------------ ------------ Net (decrease) increase in cash and cash equivalents (2,731,599) 62,970,902 109,388,844 Cash and cash equivalents at beginning of period 22,168,049 46,417,942 -- ------------ ------------ ------------ Cash and cash equivalents at end of period $ 19,436,450 109,388,844 109,388,844 ============ ============ ============ Supplemental cash flow information: Interest paid $ 35,632 105,781 397,178 ============ ============ ============ See accompanying notes to unaudited financial statements. -5-

7 ANTIGENICS INC. (a development stage company) NOTES TO UNAUDITED FINANCIAL STATEMENTS March 31, 2000 NOTE A - BASIS OF PRESENTATION The accompanying unaudited financial statements of Antigenics Inc. (the "Company") have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete annual financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. Operating results for the three-month period ended March 31, 2000 are not necessarily indicative of the results that may be expected for the year ending December 31, 2000. For further information, refer to the consolidated financial statements and footnotes thereto for the year ended December 31, 1999 included in the Company's registration statement on Form S-1 filed with the Securities and Exchange Commission on February 4, 2000. NOTE B - INITIAL PUBLIC OFFERING On February 9, 2000, the Company completed an initial public offering (the "IPO") of 4,025,000 shares of common stock at $18 per share. Gross proceeds to the Company before deduction of offering expenses of approximately $6,221,000 were $72,450,000. Concurrent with the completion of the IPO, the Company was converted from a limited liability company to a corporation. All members of the limited liability company exchanged their respective member interests for shares of common stock in the corporation. The financial statements have been retroactively adjusted to reflect the conversion from a limited liability company to a corporation and the exchange of each unit of members' equity into 172.0336 shares of common stock. NOTE C - INCOME TAXES Prior to converting to a corporation, as a limited liability company, no federal, state or local income taxes were levied on the Company. Each member of the Company was individually responsible for reporting their share of the Company's net income or loss on their personal tax returns. As a result, the Company will not be able to offset future taxable income, if any, against losses incurred prior to the conversion to a corporation. Given the Company's history of incurring operating losses, management believes that it is more likely than not that any deferred tax assets, net of deferred tax liabilities, will not be realized. Therefore, there is no income tax benefit in the accompanying financial statements because of a loss before income taxes and the need to recognize a valuation allowance on net deferred tax assets. Income taxes are accounted for under the asset and liability method. Beginning February 9, 2000, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. -6-

8 Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be reversed or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are recorded when they more likely than not are able to be realized. NOTE D - EARNINGS PER SHARE Statement of Financial Accounting Standards (SFAS) No. 128, "Earnings Per Share," requires the calculation and presentation of "Basic" and "Diluted" earnings per share. Basic earnings per share is calculated by dividing net loss by the weighted average number of common shares outstanding. Diluted earnings per share is calculated by dividing net loss by the weighted average common shares outstanding plus the dilutive effect of outstanding stock options and stock warrants. Because Antigenics reports a net loss, diluted earnings per share is the same as basic earnings per share because the effect of outstanding stock options and stock warrants being added to weighted average shares outstanding would reduce the net loss per share. Therefore, outstanding stock options and stock warrants are not included in the calculation. NOTE E - STOCK-BASED COMPENSATION PLANS EMPLOYEE STOCK PURCHASE PLAN In connection with the IPO, the board of directors approved an employee stock purchase plan. The plan is also subject to approval by the stockholders at the May 2000 stockholders' meeting. Under the plan, employees may purchase shares of common stock at a discount from fair market value. There are 300,000 shares of common stock reserved for issuance under the purchase plan. The purchase plan is intended to qualify as an employee stock purchase plan within the meaning of Section 423 of the Internal Revenue Code of 1986, as amended. Rights to purchase common stock under the purchase plan are granted at the discretion of the compensation committee, which determines the frequency and duration of individual offerings under the plan and the dates when stock may be purchased. Eligible employees participate voluntarily and may withdraw from any offering at any time before stock is purchased. Participation terminates automatically upon termination of employment. The purchase price per share of common stock in an offering is 85% of the lesser of its fair value at the beginning of the offering period or on the applicable exercise date and may be paid through payroll deductions, periodic lump sum payments or a combination of both. The plan terminates on November 15, 2009. As of March 31, 2000, no shares of common stock have been issued under the purchase plan. EQUITY INCENTIVE PLAN In connection with the IPO, the board of directors approved an employee equity incentive plan. The Company's equity incentive plan authorizes the grant of incentive stock options within the meaning of Section 422 of the Internal Revenue Code of 1986, as amended, and non-qualified stock options for the purchase of an aggregate of 4,800,000 shares (subject to adjustment for stock splits and similar capital changes) of common stock to employees and, in the case of non-qualified stock options, to outside advisors and directors of Antigenics. The board of directors has appointed the compensation committee to administer the equity plan. The grant of incentive stock options to employees is subject to approval by the stockholders at the May 18, 2000 stockholders' meeting. During the three months ended March 31, 2000, the Company granted approximately 233,000 non-qualified stock options to employees and directors with exercise prices at or below the fair value of the underlying shares at the date of grant. These options were granted at a weighted -7-

9 average exercise price of $12.55 per share. In addition, the Company granted approximately 36,000 non-qualified stock options to outside advisors of which approximately 22,000 options vested immediately and the remainder vest over periods up five years. These options were granted at a weighted average exercise price of $14.48 per share. The Company recorded a charge to operations related to the grants of options to employees and directors for the three months ended March 31, 1999 and 2000, of approximately $78,000 and $128,000, respectively. For the three months ended March 31, 1999 and 2000, the charge to operations related to options granted and earned by outside advisors totaled approximately $1,036,000 and $742,000, respectively. NOTE F - COMMITMENTS On February 11, 2000, the Company entered into a research agreement with The University of Texas M.D. Anderson Cancer Center ("MDA") to conduct clinical studies. The Company is required to pay MDA a total of approximately $358,000 for the clinical study of approximately 35 patients. The first installment was paid upon signing the agreement. Item 2 - Management's Discussion and Analysis of Financial Condition and Results of Operations MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS OVERVIEW Since our inception in March 1994, our activities have primarily been associated with the development of our heat shock protein technology and our lead immunotherapeutic, Oncophage. Our business activities have included: - establishing manufacturing capabilities; - product research and development; - manufacturing immunotherapeutics for clinical trials; - regulatory and clinical affairs; and - intellectual property prosecution. We have incurred significant losses since our inception because we have not generated any revenues. As of March 31, 2000, we had an accumulated deficit of approximately $41,980,000. We expect to continue to incur net losses over the next several years as we complete our Oncophage clinical trials, apply for regulatory approvals, continue development of our technology -8-

10 and expand our operations. We have been dependent on equity and debt financings to fund our business activities. Our financial results may vary depending on many factors, including: - the progress of Oncophage in the regulatory process; - the acceleration of our other immunotherapeutic candidates into preclinical and clinical trials; - our investment in manufacturing process development and in manufacturing capacity for Oncophage and other product candidates; - development of a sales and marketing staff and initial sales activities if Oncophage is approved for commercialization; and - the progress of our other research and development efforts. HISTORICAL RESULTS OF OPERATIONS THREE MONTHS ENDED MARCH 31, 2000 COMPARED TO THE THREE MONTHS ENDED MARCH 31, 1999 Revenue: We generated no revenue during the three months ended March 31, 2000 or during the three months ended March 31, 1999. Research and Development: Research and development expense increased 34.8% to $3,368,000 for the three months ended March 31, 2000 from $2,499,000 for the three months ended March 31, 1999. The increase was primarily due to the increase in our staff to support our expanded research and development activities, which increased costs by $728,000. Costs associated with operating our new manufacturing facility, and other ongoing development activities increased costs by $194,000 and $86,000, respectively. These increases were partially offset by the decrease in the non-cash charge for options granted and earned by outside advisors, directors and employees from $579,000 for the three months ended March 31, 1999 to $440,000 for the three months ended March 31, 2000. Research and development expenses consist primarily of compensation for our employees and outside advisors conducting research and development work, costs associated with our sponsored research at the University of Connecticut, costs associated with the operation of our manufacturing and laboratory facility and the costs to support our Oncophage clinical trials. General and Administrative: General and administrative expenses increased 34.1% to $1,702,000 for the three months ended March 31, 2000 from $1,269,000 for the three months ended March 31, 1999. The increase was primarily due to the growth in the number of our employees to support our expanded business operations that increased costs by $231,000, and increased costs related to operating as a public company of $115,000. This increase was partially offset by the decrease in the non-cash charge for options granted and earned by outside advisors, directors and employees to $429,000 for the three months ended March 31, 2000 from $535,000 for the three months ended March 31, 1999. General and administrative expenses consisted primarily of personnel compensation, office expenses and professional fees. Depreciation and Amortization: Depreciation and amortization expense increased 355.7% to $360,000 for the three months ended March 31, 2000 from $79,000 for the three months ended March 31, 1999. This increase was due to the depreciation expense of our new 30,225 square foot manufacturing and laboratory facility and related equipment placed in service during the second quarter of 1999. -9-

11 Interest Income: Interest income increased 363.2% to $1,172,000 for the three months ended March 31, 2000 from $253,000 for the three months ended March 31, 1999. This increase was principally attributable to a higher average cash and cash equivalents balance during the three months ended March 31, 2000 as compared to the three months ended March 31, 1999 as a result of net proceeds of $38,907,000 from a private equity financing completed in November 1999 and $66,229,000 from our initial public offering completed in February 2000. Interest expense: Interest expense increased 194.4% to $106,000 for the three months ended March 31, 2000 from $36,000 for the three months ended March 31, 1999 due to the increased borrowings under a credit facility to fund the construction of our manufacturing and laboratory facility. The Management's Discussion and Analysis of Financial Condition and Results of Operation contains forward-looking statements reflecting management's current expectations regarding our future performance. These expectations are based on certain assumptions regarding the timing of our clinical trials, the efficacy of products, the availability of capital and other factors relating to our growth. These expectations may not materialize if product development efforts are delayed or suspended or if other assumptions prove incorrect. These factors are more fully discussed in our registration statement on Form S-1 filed with the Securities and Exchange Commission on February 4, 2000. LIQUIDITY AND CAPITAL RESOURCES We have incurred annual operating losses since inception, and at March 31, 2000, we had incurred an accumulated deficit of $41,980,000. Since our inception, we have financed our operations primarily through the sale of equity, interest income earned on cash and cash equivalent balances and debt provided through a credit line secured by some of our manufacturing and laboratory assets. Most recently, we have completed an initial public offering that raised net proceeds of $66,229,000. From our inception through March 31, 2000, we raised aggregate net proceeds of $145,223,000 through the sale of equity and borrowed $3,481,000 under our $5,000,000 credit facility. We expect that we will fund our capital expenditures and growing operations over the next two years with current working capital. Our future capital requirements include, but are not limited to, supporting our Oncophage clinical trial efforts and continuing our other research and development programs. Satisfying our long-term liquidity needs will require the successful commercialization of Oncophage or other products and may require additional capital. Our cash and cash equivalents at March 31, 2000, were $109,389,000, an increase of $62,971,000 from December 31, 1999. During the three months ended March 31, 2000 we used cash primarily to finance operations, including our Oncophage clinical trials. Net cash used in operating activities for the three months ended March 31, 1999 and 2000 was $2,243,000 and $3,308,000. The increase resulted from the increase in the number of our Oncophage clinical trials and general expansion of our operations. Net cash used in investing activities for the three months ended March 31, 1999 and 2000 was $2,908,000 and $393,000. The investments were primarily for the purchase of equipment, furniture and fixtures, and in 1999 the construction of our manufacturing and laboratory facility which was primarily completed during the second quarter of 1999. During 1999, we partially financed our new manufacturing and laboratory facility in Woburn, Massachusetts through the $5,000,000 credit facility discussed below and available cash balances. Net cash provided by financing activities was $2,420,000 and $66,673,000 for the three months ended March 31, 1999 and 2000. Since inception, our primary source of financing has been from equity investments. During the three months ended March 31, 1999 and 2000, sales of equity and, in 2000, exercises of stock options and warrants, totaled approximately $2,212,000 and $66,865,000. At March 31, 2000, we had outstanding $2,775,000 under our credit facility, which was used to finance the construction of our manufacturing and laboratory facility and to purchase related equipment. Loans that were drawn down on the credit facility are secured by the specific assets, including leasehold improvements, which they finance. OTHER In June 1998, the Financial Accounting Standards Board ("FASB") issued SFAS No. 133, "Accounting or Derivative Instruments and Hedging Activities." This statement establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts, and for hedging activities. SFAS No. 133, as amended, will be effective for our fiscal year beginning January 1, 2001. The adoption of SFAS No. 133 is not expected to have a material effect on our financial position or results of operations. In March 2000, the FASB issued FASB Interpretation No. 44, "Accounting for Certain Transactions Involving Stock Compensation" (FIN 44). FIN 44 provides guidance on the accounting for stock-based compensation grants to employees and directors. The interpretation will be applied prospectively beginning July 1, 2000. We are evaluating FIN 44 and the effect it may have on the financial statements. -10-

12 Item 3 - Quantitative and Qualitative Disclosures About Market Risk In the normal course of business, we are exposed to fluctuations in interest rates as we seek debt financing to make capital expenditures. We do not employ specific strategies, such as the use of derivative instruments or hedging, to manage our interest rate exposures. There has been no change since the fiscal year ended December 31, 1999 with respect to our interest rate exposures or our approach toward those exposures. Further, we do not expect our market risk exposures to change in the near term. -11-

13 PART II - OTHER INFORMATION Item 1 - None Item 2 - Use of Proceeds from Registered Securities On February 3, 2000 the Securities and Exchange Commission declared our registration statement on Form S-1 (File No. 333-91747) effective in connection with the initial public offering of 4,025,000 shares of our common stock. U.S. Bancorp Piper Jaffray Inc. and FleetBoston Robertson Stephens Inc. served as managing underwriters of the offering. On February 9, 2000, we sold 4,025,000 shares of our common stock (including the underwriters' overallotment option) at $18 per share to the underwriters. We received net proceeds from the initial public offering of approximately $66,229,000 reflecting gross proceeds of $72,450,000 net of underwriter commissions of approximately $5,071,500 and other offering costs of approximately $1,149,500. We have used the following net offering proceeds as of March 31, 2000: approximately $334,000 for fixed asset additions, $65,000 for debt obligations and $1,854,000 for operations. The offering has terminated with the sale of all of the securities that were registered. Items 3-5 - None Item 6(a) - Exhibits EXHIBITS DESCRIPTION 27 Financial Data Schedule Item 6(b) - Reports on Form 8-K No reports on Form 8-K have been filed during the quarter for which this report is filed. -12-

14 ANTIGENICS INC. SIGNATURES Pursuant to the requirements of the Securities Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. ANTIGENICS INC. Date: May 15, 2000 /s/ Garo H. Armen ------------------------------------------------- Garo H. Armen President and Chief Executive Officer (Principal Accounting Officer) -13-

15 ANTIGENICS INC. EXHIBIT INDEX EXHIBIT NO. DESCRIPTION ----------- ----------- 27 Financial Data Schedule -14-

  

5 THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE MARCH 31, 2000 UNAUDITED FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. 3-MOS DEC-31-2000 JAN-01-2000 MAR-31-2000 109,388,844 0 0 0 0 110,507,602 9,785,402 1,717,450 119,024,076 2,601,327 0 0 0 247,772 114,242,467 119,024,076 0 0 0 0 5,429,530 0 105,781 (4,363,196) 0 (4,363,196) 0 0 0 (4,363,196) (0.19) (0.19)