SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2000 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 0-18311 NEUROGEN CORPORATION (Exact name of registrant as specified in its charter) Delaware 22-2845714 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 35 Northeast Industrial Road Branford, Connecticut 06405 (Address of principal executive offices) (Zip Code) (203) 488-8201 (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 --- --- As of May 15, 2000 the registrant had 15,581,060 shares of Common Stock outstanding. NEUROGEN CORPORATION INDEX Page Number Part I - Financial Information Item 1. Consolidated Financial Statements.................................. 1 Consolidated Balance Sheets at March 31, 2000 and December 31, 1999................................................. 1,2 Consolidated Statements of Operations for the three-month periods ended March 31, 2000 and 1999 .................................... 3 Consolidated Statements of Cash Flows for the three-month periods ended March 31, 2000 and 1999 .................................... 4 Notes to Consolidated Financial Statements......................... 5 Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations............................................. 6-12 Part II - Other Information Item 1. Legal Proceedings................................................. 13 Item 2. Changes in Securities............................................. 13 Item 3. Defaults upon Senior Securities................................... 13 Item 4. Submission of Matters to a Vote of Security Holders............... 13 Item 5. Other Information................................................. 13 Item 6. Exhibits and Reports on Form 8-K.................................. 13 Signature ................................... ........................... 15 Exhibit Index ........................................................... 16-18 PART I - FINANCIAL INFORMATION ITEM 1 - CONSOLIDATED FINANCIAL STATEMENTS NEUROGEN CORPORATION CONSOLIDATED BALANCE SHEETS (In thousands) MARCH 31, 2000 DECEMBER 31, 1999 Assets (UNAUDITED) (AUDITED) -------------- --------------- Current assets: Cash and cash equivalents $ 58,907 $ 31,588 Marketable securities 13,610 33,441 Receivables from corporate partners 702 286 Other current assets 619 921 ------------- --------------- Total current assets 73,838 66,236 Property, plant & equipment: Land and land improvements 875 875 Building and building improvements 16,834 16,834 Construction in progress 1,921 1,702 Leasehold improvements 4,026 4,026 Equipment 11,986 11,440 Furniture 583 578 --------------- ---------------- 36,225 35,455 Less accumulated depreciation & amortization 10,517 9,840 --------------- ---------------- Net property, plant and equipment 25,708 25,615 Other assets, net 257 283 --------------- ---------------- $ 99,803 $ 92,134 =============== ================ See accompanying notes to consolidated financial statements. 1 NEUROGEN CORPORATION CONSOLIDATED BALANCE SHEETS (In thousands) MARCH 31, 2000 DECEMBER 31, 1999 (UNAUDITED) (AUDITED) ----------------- ----------------- Liabilities & Stockholders' Equity Current liabilities: Accounts payable and accrued expenses $ 2,350 $ 2,704 Unearned revenue from corporate partners, current 3,260 1,260 ----------------- ------------------ Total current liabilities 5,610 3,964 Loans payable 1,912 1,912 Unearned revenue from corporate partners, long term 3,250 1,500 Other compensation 48 48 ----------------- ------------------ Total liabilities 10,820 7,424 Commitments and Contingencies Stockholders' Equity: Preferred stock, par value $.025 per share Authorized 2,000 shares; none issued - - Common stock, par value $.025 per share Authorized 30,000 shares; issued and outstanding 15,536 shares at March 31, 2000 and 14,800 shares at December 31, 1999 388 370 Additional paid-in capital 128,038 114,519 Accumulated deficit (37,521) (26,852) Deferred compensation (1,664) (3,076) Accumulated other comprehensive income (258) (251) ----------------- ------------------ Total stockholders' equity 88,983 84,710 ----------------- ------------------ $ 99,803 $ 92,134 ================= ================== See accompanying notes to consolidated financial statements. 2 NEUROGEN CORPORATION CONSOLIDATED STATEMENTS OF OPERATIONS (In thousands, except per share data) THREE MONTHS THREE MONTHS ENDED ENDED MARCH 31, 2000 MARCH 31, 1999 (UNAUDITED) (UNAUDITED) ---------------- ---------------- Operating revenues: License fees $ 250 $ - Research and development 2,591 2,636 ---------------- ---------------- Total operating revenues 2,841 2,636 Operating expenses: Research and development 6,343 5,834 General and administrative 1,499 1,098 Stock compensation 6,596 23 ---------------- ---------------- Total operating expenses 14,438 6,955 ---------------- ---------------- Operating loss (11,597) (4,319) Other income (expense): Investment income 928 914 Interest expense - (1) ---------------- ---------------- Total other income, net 928 913 ---------------- ---------------- Loss before provision for income taxes $ (10,669) $ (3,406) Provision for income taxes - - ---------------- ---------------- Net loss (10,669) (3,406) ================ ================ Net loss per share: Basic $ (0.70) $ (0.23) (1) ================ ================ Diluted $ (0.70) $ (0.23) (1) ================ ================ Shares used in calculation of loss per share: Basic 15,297 14,548 (1) ================ ================ Diluted 15,297 14,548 (1) ================ ================ See accompanying notes to consolidated financial statements. (1) The contingently issuable common stock securities have not been included in accordance with FAS128. 3 NEUROGEN CORPORATION CONSOLIDATED STATEMENTS OF CASH FLOWS (In thousands) THREE MONTHS THREE MONTHS ENDED ENDED MARCH 31, 2000 MARCH 31, 1999 (UNAUDITED) (UNAUDITED) --------------- --------------- Cash flows from operating activities: Net loss $ (10,669) $ (3,406) Adjustments to reconcile net loss to net cash provided by (used in) operating activities: Depreciation and amortization expense 676 624 Stock compensation expense 6,596 23 Other noncash expense 150 139 Changes in operating assets and liabilities: (Decrease) in accounts payable and accrued expenses (354) (937) Increase in unearned revenue from corporate partners 3,750 - (Increase)decrease in receivables from corporate partners (416) 237 Decrease in other assets, net 296 409 --------------- --------------- Net cash provided by (used in) operating activities 29 (2,911) Cash flows from investing activities: Purchase of plant and equipment (770) (224) Purchases of marketable securities (1,436) (4,870) Maturities and sales of marketable securities 21,260 35,154 --------------- --------------- Net cash provided by investing activities 19,054 30,060 Cash flows from financing activities: Exercise of employee stock options 8,236 275 Principal payments under mortgage payable - (55) --------------- --------------- Net cash provided by financing activities 8,236 220 --------------- --------------- Net increase in cash and cash equivalents 27,319 27,369 Cash and cash equivalents at beginning of period 31,588 26,066 --------------- --------------- Cash and cash equivalents at end of period $ 58,907 $ 53,435 =============== =============== See accompanying notes to consolidated financial statements. 4 Neurogen Corporation Notes to Consolidated Financial Statements March 31, 2000 (Unaudited) (1) BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The unaudited financial statements have been prepared from the books and records of Neurogen Corporation (the "Company") in accordance with generally accepted accounting principles for interim financial information pursuant to Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. These interim financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 1999 included in the Company's Annual Report on Form 10-K. Interim results are not necessarily indicative of the results that may be expected for the fiscal year. (2) REVENUE RECOGNITION Revenue under research and development arrangements is recognized as earned under the terms of the respective agreements. License payments under separate license agreements are recorded when received and the license agreements are signed and there are no continuing obligations on the part of the Company. When further efforts are required, the license fees are recognized over the related term. Product research funding is recorded as revenue, generally on a quarterly basis, as research effort is incurred. Deferred revenue arises from payments received which have not yet been earned under research and development as well as in arrangements in contracts where both research and development and licensing are included and Neurogen has some level of continued involvement. In December 1999, the staff of the Securities and Exchange Commission issued its Staff Accounting Bulletin ("SAB") No. 101, REVENUE RECOGNITION. SAB No. 101, as amended by SAB No. 101A, provides guidance on the measurement and timing of revenue recognition in financial statements of public companies. Changes in accounting policies to apply the guidance of SAB No. 101 must be adopted by recording the cumulative effect of the change in the fiscal quarter ending June 30, 2000. SAB No. 101 requires that license and other p front fees from research collaborations be recognized over the term of the agreement unless the fee is in exchange for products delivered or services performed that represent the culmination of a separate earnings process. The Company believes its current revenue recognition policy is in compliance with SAB No. 101 and the application of the guidance to their financial statements will not result in a material change upon adoption in the second quarter of 2000. (3) PRINCIPLES OF CONSOLIDATION The consolidated financial statements include the accounts of the parent company and a subsidiary, Neurogen Properties LLC, after elimination of intercompany transactions. (4) SEGMENT INFORMATION In 1998, the Company adopted Statement of Financial Accounting Standards No. 131, Disclosures about Segments of an Enterprise and Related Information (SFAS No. 131). SFAS No. 131 supersedes SFAS No. 14, Financial Reporting for Segments of a Business Enterprise, replacing the "industry segment" approach with the "management" approach. The management approach designates the internal organization that is used by management for making operating decisions and assessing performance as the source of the Company's reportable segments. The Company operates in one segment: drug discovery and pharmaceutical development. SFAS No. 131 also requires disclosures about products and services, geographic area, and major customers. The adoption of SFAS No. 131 had no impact on the Company's financial statements for the periods presented. (5) RECLASSIFICATIONS Certain reclassifications have been made to the 1999 financial statements in order to conform to the 2000 presentation. 5 (6) NON-CASH COMPENSATION CHARGE At December 31,1999, 137,625 shares of restricted stock were held by certain employees. The original December 31, 1998 grant stipulated that if the stock price closed at or above $45.00 per share within four years from date of grant the restriction would be removed and the employee would be able to trade the stock, but if the stock price did not close at or above $45.00 within four years the shares would be forfeited. On February 18, 2000, Neurogen stock closed the trading day at $47.25, thereby removing the restriction and vesting the stock immediately. A non-recurring, non-cash charge to income of $6,503,000 for all 137,625 shares at $47.25 per share was recorded in the first quarter of 2000. 6 Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Since its inception in September 1987, Neurogen has been engaged in the discovery and development of drugs. The Company has not derived any revenue from product sales and expects to incur significant losses in most years prior to deriving any such product revenues. Revenues to date have come from three collaborative research agreements and one technology transfer agreement entered into with Pfizer, one collaboration with Schering-Plough, one license agreement with American Home Products and from interest income. RESULTS OF OPERATIONS Results of operations may vary from period to period depending on numerous factors, including the timing of income earned under existing or future strategic alliances, technology transfer agreements, joint ventures or financings, if any, the progress of the Company's research and development and technology transfer projects, technological advances and determinations as to the commercial potential of proposed products. Neurogen expects research and development costs to increase significantly over the next several years as its drug development programs progress. In addition, general and administrative expenses necessary to support the expanded research and development activities are expected to increase for the foreseeable future. THREE MONTHS ENDED MARCH 31, 2000 AND 1999 The Company's operating revenues increased to $2.8 million for the three months ended March 31, 2000 as compared to $2.6 million for the same period in 1999. In the first quarter of 2000, Neurogen recognized revenue of $0.3 million under the Pfizer Technology Transfer Agreement. Also during the quarter, Neurogen recognized revenue of $0.3 million for the accomplishment of a milestone in the cognition enhancement collaboration with Pfizer. Operating revenues in future periods may fluctuate significantly due to many factors, including those described throughout this section. 7 Research and development costs increased 9 percent to $6.3 million for the three-month period ended March 31, 2000 as compared to $5.8 million for the same period in 1999. The increase is primarily due to increases in research and development personnel as well as the Company's further expansion of its AIDD (Accelerated Intelligent Drug Design) Program for the discovery of new drug candidates. Research and development expenses represented 81 percent (excluding a non-recurring, non-cash compensation charge) and 84 percent of total operating expenses in the three month periods ended March 31, 2000 and 1999, respectively. General and administrative expenses increased 37 percent to $1.5 million for the three-month period ended March 31, 2000 as compared to $1.1 million for the same period in 1999. This increase is attributed to additional administrative and technical services, including the protection of Neurogen's growing intellectual property estate and the pursuit of potential collaborative relationships, to support and commercialize Neurogen's expanding research pipeline. Other income, consisting primarily of interest income and gains and losses from invested cash and marketable securities, increased 2 percent for the first quarter of 2000 as compared to the same period in 1999 due primarily to a slightly higher level of invested funds. The Company recognized a net loss of $10.7 million for the three months ended March 31, 2000 as compared with a net loss of $3.4 million for the same period in 1999. The increase in net loss is primarily due to a non-recurring non-cash $6.5 million charge recognized in the first quarter upon the vesting of 137,625 shares of restricted stock granted to certain employees in 1998, and an increase in research and development and general and administrative expenses for the first quarter of 2000 due to the factors described above. LIQUIDITY AND CAPITAL RESOURCES At March 31, 2000 and December 31, 1999, cash, cash equivalents and marketable securities were in the aggregate $72.5 million and $65.0 million respectively. This increase was due primarily to the receipt in the first quarter of approximately $8.2 million in proceeds from stock option exercises and the receipt of a $4.0 million payment from Pfizer under the Technology Transfer Agreement described below. While the Company's aggregate level of cash, cash equivalents and marketable securities increased during the first quarter of 2000, these levels have fluctuated significantly in the past and are expected to do so in the future as a result of the factors described below. Neurogen's cash requirements to date have been met by the proceeds of its financing activities, amounts received pursuant to collaborative arrangements and interest earned on invested funds. The Company's financing activities include three private placement offerings of its common stock prior to its initial public offering, underwritten public offerings of the Company's common stock in 1989, 1991 and 1995, and the private sale of common stock to Pfizer in connection with entering into the Pfizer Agreements and to American Home Products in a licensing agreement. Total funding received from these financing activities was approximately $105.6 million. The Company's expenditures have been primarily to fund research and development and general and administrative expenses and to construct and equip its research and development facilities. 8 PFIZER - ------ In the first quarter of 1992, the Company entered into the 1992 Pfizer Agreement pursuant to which Pfizer made a $13.8 million equity investment in the Company and agreed, among other things, to fund a specified level of resources for up to five years (later extended as described below) for Neurogen's research programs for the discovery of GABA-based drugs for the treatment of anxiety and cognitive disorders. As of March 31, 2000, Pfizer had provided $37.5 million of research funding to the Company pursuant to the 1992 Pfizer Agreement, as extended, and $0.5 million for the achievement of certain clinical development and regulatory milestones. Neurogen is eligible to receive additional milestone payments of up to $12.0 million if certain development and regulatory objectives are achieved regarding its products subject to the collaboration. In return, Pfizer received the exclusive rights to manufacture and market collaboration anxiolytics and cognition enhancers that act through the family of receptors which interact with the neuro-transmitter GABA. Pfizer will pay Neurogen royalties based upon net sales levels, if any, for such products. Neurogen and Pfizer entered into their second collaborative agreement, the 1994 Pfizer Agreement, in July 1994, pursuant to which Pfizer made an additional $9.9 million equity investment in the Company and agreed, among other things, to fund a specified level of resources for up to four years (later extended as described below) for Neurogen's research program for the development of GABA-based drugs for the treatment of sleep disorders. As of March 31, 2000, Pfizer had provided $12.2 million of research funding to the Company pursuant to the 1994 Pfizer Agreement, as extended, and $0.3 million for the achievement of a clinical development milestone. Neurogen could also receive additional milestone payments of up to $3.0 million if certain development and regulatory objectives are achieved regarding its products subject to the collaboration. In return, Pfizer received the exclusive rights to manufacture and market GABA-based sleep disorder products for which it will pay Neurogen royalties based upon net sales levels, if any. In December 1996 and again in December 1998, Neurogen and Pfizer extended and combined Neurogen's research efforts under the 1992 and 1994 Agreements. Pursuant to the extension agreements, Neurogen has received $1.6 million in the first three months of 2000 (which amount is included in the above-described cumulative totals received for the 1992 and 1994 agreements) and under the extension expects to receive an additional $4.7 million during the remainder of 2000 for research and development funding of the Company's GABA-based anxiolytic, cognitive enhancer and sleep disorders projects. Under both the 1992 Pfizer Agreement and the 1994 Pfizer Agreement, in addition to making the equity investments and the research and milestone payments noted above, Pfizer is responsible for funding the cost of all clinical development and the manufacturing and marketing, if any, of drugs developed from the collaborations. 9 Neurogen and Pfizer entered into their third collaborative agreement, the 1995 Pfizer Agreement, in November 1995, pursuant to which Pfizer made an additional $16.5 million equity investment in the Company bringing Pfizer's ownership of the Company's common stock up to approximately 21 percent. Pfizer also paid a $3.5 million license fee. Additionally, Pfizer agreed, among other things, to fund a specified level of resources for up to five years for Neurogen's research program for the discovery of drugs which work through the neuropeptide Y (NPY) mechanism for the treatment of obesity and other disorders. As of March 31, 2000, Pfizer had provided $12.2 million in research funding pursuant to the 1995 Pfizer Agreement. In 1998, Pfizer exercised its option under the 1995 Pfizer Agreement to extend the NPY research program and also agreed to fund increased Neurogen staffing on the program and thereby pay Neurogen $3.1 million to fund a fourth year of research, through October 1999. In 1999, Pfizer elected to further extend the research program through October 2000 and to pay Neurogen $2.6 million in 2000 for research done through that date. Neurogen could also receive milestone payments of up to approximately $28.0 million if certain development and regulatory objectives are achieved regarding its products subject to the collaboration. As part of this third collaboration, Pfizer received the exclusive worldwide rights to manufacture and market NPY-based collaboration compounds, subject to certain rights retained by Neurogen. Pursuant to the 1995 Pfizer Agreement, Neurogen will fund a minority share of early stage clinical development costs and has retained the right to manufacture any collaboration products in NAFTA countries. Neurogen has also retained a profit sharing option with respect to product sales in NAFTA countries. If Neurogen exercises the profit sharing option, it will fund a portion of the cost of late stage clinical trials and marketing costs and in return receive a specified percentage of any profit generated by sales of collaboration products in NAFTA countries. If Neurogen chooses not to exercise its profit-sharing option, Pfizer would pay Neurogen royalties on drugs marketed in NAFTA countries and will fund a majority of early stage and all late stage development and marketing expenses. In either case Neurogen would be entitled to royalties on drugs marketed in non-NAFTA countries. In June of 1999, Neurogen and Pfizer entered into a technology transfer agreement, (the "Pfizer Technology Transfer Agreement"). Under the terms of this agreement, Pfizer has agreed to pay Neurogen up to a total of $27.0 million over a three year period for the licensing and transfer to Pfizer of certain of Neurogen's AIDD technologies for the discovery of new drugs, along with the installation of an AIDD system. Additional payments are also possible upon Pfizer's successful utilization of this technology. Pfizer has received a non-exclusive license to certain AIDD intellectual property, and the right to employ this technology in its own drug development programs. As of March 31, 2000, Pfizer had provided $7.0 million in license fees pursuant to the Pfizer AIDD agreement of which $0.8 million has been recognized through March 31,2000. Remaining revenues associated with amounts received under the Pfizer Technology Transfer Agreement will be recognized in future periods and may fluctuate significantly depending on the timing and completion of the Company's transfer of technology and systems pursuant to the agreement. 10 The Company plans to use its cash, cash equivalents and marketable securities for its research and development activities, working capital and general corporate purposes. Neurogen anticipates that its current cash balance, as supplemented by research funding pursuant to the Pfizer Agreements and fees it expects to receive under the Pfizer Technology Transfer Agreement, will be sufficient to fund its current and planned operations through 2002. However, Neurogen's funding requirements may change and will depend upon numerous factors, including but not limited to, the progress of the Company's research and development programs, the timing and results of preclinical testing and clinical studies, the timing of regulatory approvals, technological advances, determinations as to the commercial potential of its proposed products, the status of competitive products and the ability of the Company to establish and maintain collaborative arrangements with others for the purpose of funding certain research and development programs, conducting clinical studies, obtaining regulatory approvals and, if such approvals are obtained, manufacturing and marketing products. The Company anticipates that it may augment its cash balance through financing transactions, including the issuance of debt or equity securities and further corporate alliances. No assurances can be given that adequate levels of additional funding can be obtained on favorable terms, if at all. 11 As of December 31, 1999, the Company had approximately $37.1 million and $2.8 million of net operating loss carryforwards and research and development credits, respectively, available for federal income tax purposes which expire in the years 2004 through 2019. The Company also had approximately $25.6 million and $0.7 million of Connecticut state tax net operating loss carryforwards and research and development credits, respectively, which expire in the years 2000 through 2014. Because of "change in ownership" provisions of the Tax Reform Act of 1986, our utilization of our net operating loss and research and development credit carryforwards may be subject to an annual limitation in future periods. Discussion of the Year 2000 issue Neurogen's program to address the Year 2000 issue consisted of assessment, remediation, testing and contingency planning. The Company's program was initiated and executed to prevent major interruptions in the business due to Year 2000 problems. As of December 31, 1999, all phases were completed. The Company did not experience any significant disruption as a result of the Year 2000 issue. The total cost of the Year 2000 program was approximately $200,000, primarily for the cost of replacing/upgrading noncompliant software. The Company completed its assessment of Year 2000 risks related to significant relationships with critical third party suppliers and customers. Despite these efforts, there can be no assurance that all supplier and customer Year 2000 compliance plans were successfully completed in a timely manner, although the Company is not currently aware of any problems which would significantly impact operations. Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK Interest rate risk. The Company's investment portfolio includes investment grade debt instruments. These bonds are subject to interest rate risk, and could decline in value if interest rates fluctuate. Due to the short duration and conservative nature of these instruments, the Company does not believe that it has a material exposure to interest rate risk. Additionally, funds available from investment activities are dependent upon available investment rates. These funds may be higher or lower than anticipated due to interest rate volatility. Capital Market Risk. The Company currently has no product revenues and is dependent on funds raised through other sources. One source of funding is through further equity offerings. The ability of the Company to raise funds in this manner is dependent upon capital market forces affecting the stock price of the Company. 12 Part II - Other Information Item 1. Legal Proceedings Not applicable for the first quarter ended March 31, 2000. Item 2. Changes in Securities Not applicable for the first quarter ended March 31, 2000. Item 3. Defaults upon Senior Securities Not applicable for the first quarter ended March 31, 2000. Item 4. Submission of Matters to a Vote of Security Holders Not applicable for the first quarter ended March 31, 2000. Item 5. Other information Not applicable for the first quarter March 31, 2000. Item 6. Exhibits and Reports on Form 8-K (a) See Exhibit Index on page 11. (b) None 13 SAFE HARBOR STATEMENT Statements which are not historical facts, including statements about the Company's confidence and strategies, the status of various product development programs, the sufficiency of cash to fund planned operations and the Company's expectations concerning its development compounds, drug discovery technologies and opportunities in the pharmaceutical marketplace are "forward looking statements" within the meaning of the Private Securities Litigations Reform Act of 1995 that involve risks and uncertainties and are not guarantees of future performance. These risks include, but are not limited to, difficulties or delays in development, testing, regulatory approval, production and marketing of any of the Company's drug candidates, the failure to attract or retain scientific management personnel, any unexpected adverse side effects or inadequate therapeutic efficacy of the Company's drug candidates which could slow or prevent product development efforts, competition within the Company's anticipated product markets, the Company's dependence on corporate partners with respect to research and development funding, regulatory filings and manufacturing and marketing expertise, the uncertainty of product development in the pharmaceutical industry, inability to obtain sufficient funds through future collaborative arrangements, equity or debt financings or other sources to continue the operation of the Company's business, risk that patents and confidentiality agreements will not adequately protect the Company's intellectual property or trade secrets, dependence upon third parties for the manufacture of potential products, inexperience in manufacturing and lack of internal manufacturing capabilities, dependence on third parties to market potential products, lack of sales and marketing capabilities, potential unavailability or inadequacy of medical insurance or other third-party reimbursement for the cost of purchases of the Company's products, and other risks detailed in the Company's Securities and Exchange Commission filings, including its Annual Report on Form 10-K for the year ended December 31, 1999, each of which could adversely affect the Company's business and the accuracy of the forward-looking statements contained herein. 14 Signature Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. NEUROGEN CORPORATION By:/s/ STEPHEN R. DAVIS ------------------------ Stephen R. Davis Senior Vice President and Chief Business Officer Date: May 15, 2000 15 Exhibit Index Exhibit - ------- Number - ------ 10.1 - Neurogen Corporation Stock Option Plan, as amended (incorporated by reference to Exhibit 10.1 to the Company's Form 10-K for the fiscal year ended December 31, 1991). 10.2 - Form of Stock Option Agreement currently used in connection with the grant of options under Neurogen Corporation Stock Option Plan (incorporated by reference to Exhibit 10.2 to the Company's Form 10-K for the fiscal year ended December 31, 1992). 10.3 - Neurogen Corporation 1993 Omnibus Incentive Plan, as amended (incorporated by reference to Exhibit 10.3 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.4 - Form of Stock Option Agreement currently used in connection with the grant of options under Neurogen Corporation 1993 Omnibus Incentive Plan (incorporated by reference to Exhibit 10.4 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.5 - Neurogen Corporation 1993 Non-Employee Directors Stock Option Program (incorporated by reference to Exhibit 10.5 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.6 - Form of Stock Option Agreement currently used in connection with the grant of options under Neurogen Corporation 1993 Non-Employee Directors Stock Option Program (incorporated by reference to Exhibit 10.6 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.7 - Employment Contract between the Company and Harry H. Penner, Jr., dated as of October 12, 1993 (incorporated by reference to Exhibit 10.7 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.8 - Employment Contract between the Company and John F. Tallman, dated as of December 1, 1993 (incorporated by reference to Exhibit 10.25 to the Company's Form 10-Q for the quarterly period ended September 30,1994). 10.9 - Open-End Mortgage Deed and Security Agreement between the Company and Orion Machinery & Engineering Corp., dated March 16, 1989 (incorporated by reference to Exhibit 10.15 to Registration Statement No. 33-29709 on Form S-1). 10.10 - Form of Proprietary Information and Inventions Agreement (incorporated by reference to Exhibit 10.31 to Registration Statement No. 33-29709 on Form S-1). 10.11 - Warrant to Purchase 47,058 Shares of Common Stock to MMC/GATX Partnership No. I, dated February 20, 1991 (incorporated by reference to Exhibit 10.34 to the Company's Form 10-K for the fiscal year ended December 31, 1990). 16 10.12 - Collaborative Research Agreement and License and Royalty Agreement between the Company and Pfizer Inc, dated as of January 1, 1992 (confidential treatment requested) (incorporated by reference to Exhibit 10.35 to the Company's Form 10-K for the fiscal year ended December 31, 1991). 10.13 - License Agreement between the Company and the National Technical Information Service, dated as of January 1, 1992 (incorporated by reference to Exhibit 10.36 to the Company's Form 10-K for the fiscal year ended December 31, 1991). 10.14 - Cooperative Research and Development Agreement between the Company and the National Institutes of Health, dated as of January 21, 1993 (incorporated by reference to Exhibit 10.37 to the Company's Form 10-K for the fiscal year ended December 31, 1991). 10.15 - Letter Agreement between the Company and Barry M. Bloom, dated January 12, 1994 (incorporated by reference to Exhibit 10.25 to the Company's Form 10-K for the fiscal year ended December 31, 1993). 10.16 - Letter Agreement between the Company and Robert H. Roth, dated April 14, 1994 (incorporated by reference to Exhibit 10.26 to the Company's Form 10-K for the fiscal year ended December 31, 1994). 10.17 - Collaborative Research Agreement and License and Royalty Agreement between the Company and Pfizer Inc, dated as of July 1, 1994 (confidential treatment requested) (incorporated by reference of Exhibit 10.1 to the Company's Form 10-Q for the quarterly period ended June 30, 1994). 10.18 - Stock Purchase Agreement between the Company and Pfizer dated as of July 1, 1994 (incorporated by reference to Exhibit 10.2 to the Company's Form 10-Q for the quarterly period ended June 30, 1994). 10.19 - Registration Rights and Standstill Agreement among the Company and the Persons and Entities listed on Schedule I thereto, dated as of July 11, 1994 (incorporated by reference to Exhibit 10.29 to the Company's Form 10-Q for the quarterly period ended September 30, 1994). 10.20 - Collaboration and License Agreement and Screening Agreement between the Company and Schering-Plough Corporation (confidential treatment requested) (incorporated by reference to Exhibit 10.1 to the Company's Form 8-K dated July 28, 1995). 10.21 - Lease Agreement between the Company and Commercial Building Associates dated as of August 30, 1995 (incorporated by reference to Exhibit 10.27 to the Company's Form 10-Q for the quarterly period ended September 30, 1995). 10.22 - Collaborative Research Agreement between the Company and Pfizer dated as of November 1, 1995 (confidential treatment requested) (incorporated by reference to Exhibit 10.1 of the Company's Form 8-K dated November 1, 1995). 17 10.23 - Development and Commercialization Agreement between the Company and Pfizer dated as of November 1, 1995 (confidential treatment requested) (incorporated by reference to Exhibit 10.2 of the Company's Form 8-K dated November 1, 1995). 10.24 - Stock Purchase Agreement between the Company and Pfizer dated as of November 1, 1995 (incorporated by reference to Exhibit 10.3 of the Company's Form 8-K dated November 1, 1995). 10.25 - Licensing Agreement dated as of November 25, 1996 between American Home Products Corporation, acting through its Wyeth-Ayerst Laboratories Division, and Neurogen Corporation (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference to Exhibit 10.1 of the Company's Form 8-K dated March 31, 1997). 10.26 - Stock Purchase Agreement dated as of November 25, 1996 between American Home Products Corporation, acting through its Wyeth-Ayerst Laboratories Division, and Neurogen Corporation (CONFIDENTIAL TREATMENT REQUESTED)(incorporated by reference to Exhibit 10.1 of the Company's Form 8-K dated March 31, 1997). 10.27 - Technology agreement between the Company and Pfizer Inc, dated as of June 15, 1999 (CONFIDENTIAL TREATMENT REQUEST) (Incorporated by reference to Exhibit 10.27 to the Company's Form 10-Q for the quarterly period ended June 30, 1999). 10.28 - Employment Contract between the Company and Alan J. Hutchison, dated as of December 1, 1997 (incorporated by reference to Exhibit 10.28 to the Company's Form 10-K for the fiscal year ended December 31, 1999). 10.29 - Employment Contract between the Company and Stephen R. Davis, dated as of December 1, 1997 (incorporated by reference to Exhibit 10.29 to the Company's Form 10-K for the fiscal year ended December 31, 1999). 10.30 - Employment Contract between the Company and Kenneth R. Shaw, dated as of December 1, 1999 (incorporated by reference to Exhibit 10.30 to the Company's Form 10-K for the fiscal year ended December 31, 1999). 27.1 - Financial Data Schedule 18