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 June 30, 2000 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ____________________ to ____________________ Commission File Number 0-14656 REPLIGEN CORPORATION (exact name of registrant as specified in its charter) Delaware 04-2729386 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 117 Fourth Avenue Needham, Massachusetts 02494 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (781) 449-9560 ----------------------------------------------------------------- (Former name, former address and former fiscal year, if changed since last report.) 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 . ---- ---- Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of August 4, 2000. Common Stock, par value $.01 per share 26,558,400 - -------------------------------------- ------------------- Class Number of Shares REPLIGEN CORPORATION INDEX PART I. FINANCIAL INFORMATION PAGE Item 1. Financial Statements 3 Balance Sheets as of June 30, 2000 (Unaudited) and March 31, 2000 Statements of Operations for the Three Ended June 30, 2000 and 1999 (Unaudited) 4 Statement of Cash Flows for the Three Months Ended June 30, 2000 and 1999 (Unaudited) 5 Notes to Financial Statements (Unaudited) 6 Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations 8 PART II. OTHER INFORMATION Item 1. Legal Proceedings 11 Item 2. Changes in Securities and Use of Proceeds 11 Item 3. Defaults Upon Senior Securities None Item 4. Submissions of Matters to a Vote of Security Holders None Item 5. Other Information None Item 6. Exhibits and Reports on Form 8-K 12 Signature 13 Exhibit Index 14 Exhibits 15 2 PART I. FINANCIAL INFORMATION ITEM I. FINANCIAL STATEMENTS REPLIGEN CORPORATION BALANCE SHEETS ASSETS JUNE 30, 2000 MARCH 31, 2000 ------------- -------------- (Unaudited) Current assets: Cash and cash equivalents $ 26,014,851 $ 25,226,546 Marketable securities 7,821,730 8,806,367 Accounts receivable, net 411,450 847,838 Inventories 543,002 547,448 Prepaid expenses and other current assets 237,711 241,654 ------------- -------------- Total current assets 35,028,744 35,669,853 ------------- -------------- Property and equipment, at cost: Equipment 1,021,981 1,092,831 Furniture and fixtures 275,908 157,476 Leasehold improvements 473,288 473,288 ------------- -------------- 1,771,177 1,723,595 Less: accumulated depreciation and amortization 1,274,767 1,187,343 ------------- -------------- 496,410 536,252 Other assets, net 81,382 81,382 ------------- -------------- $ 35,606,536 $ 36,287,487 ============= ============== LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable $ 417,976 $ 425,565 Accrued expenses 367,352 771,520 Unearned income 640 -- ------------- -------------- Total current liabilities 785,968 1,197,085 ------------- -------------- Stockholders' equity: Preferred stock, $.01 par value --authorized - 5,000,000 shares --outstanding - none -- -- Common stock, $.01 par value --authorized - 40,000,000 shares --outstanding - 26,510,550 shares at June 30, 2000 and 26,315,979 shares at March 31, 2000 265,511 263,160 Additional paid-in capital 166,205,941 165,507,183 Accumulated deficit (131,650,884) (130,679,941) ------------- -------------- Total stockholders' equity 34,820,568 35,090,402 ------------- -------------- $ 35,606,536 $ 36,287,487 ============= ============== See accompanying notes to financial statements. 3 REPLIGEN CORPORATION STATEMENT OF OPERATIONS (Unaudited) Three-Months Ended June 30, 2000 1999 ---------------------------------- Revenues: Product $ 555,794 $ 232,470 Investment income 512,605 46,538 Research and development 30,000 378,502 Other 75,000 30,658 ----------- ----------- 1,173,399 688,168 ----------- ----------- Costs and expenses: Research and development 1,083,070 488,203 Selling, general and administrative 731,084 426,169 Cost of products sold 330,188 196,383 ----------- ----------- 2,144,342 1,110,755 ----------- ----------- Net loss $ (970,943) $ (422,587) =========== =========== Basic and diluted net loss per share $ (0.04) $ (0.02) =========== =========== Basic and diluted weighted average common shares 26,455,944 18,744,863 outstanding =========== =========== See accompanying notes to financial statements. 4 REPLIGEN CORPORATION STATEMENTS OF CASH FLOWS (Unaudited) Three-Months Ended June 30, 2000 1999 ---------- ----------- Cash flows from operating activities Net loss $ (970,943) $ (422,587) Adjustments to reconcile net loss to net cash used in operating activities - Depreciation and amortization 87,424 73,119 Non cash charges relating to stock and warrant issuance 251,360 -- Changes in assets and liabilities - Accounts receivable 436,388 25,349 Inventories 4,446 48,567 Prepaid expenses and other current assets 3,943 (86,087) Accounts payable (7,589) 84,094 Accrued expenses (404,168) 24,318 Unearned income 640 (22,585) ---------- ----------- Net cash used in operating activities (598,499) (275,812) ---------- ----------- Cash flows from investing activities Proceeds of sale of marketable securities 984,637 -- Purchases of property and equipment (47,582) (69,886) Changes in other assets -- 7,061 ---------- ----------- Net cash provided by (used in) for investing activities 937,055 (62,825) ---------- ----------- Cash flows from financing activities: Net proceeds from the issuance of common stock and warrants, net of issuance costs -- 8,905,358 Exercise of warrants 437,249 -- Exercise of stock options 12,500 -- ---------- ----------- Net cash provided by financing activities 449,749 8,905,358 ---------- ----------- Net increase in cash and cash equivalents 788,350 8,566,721 Cash and cash equivalents, beginning of period 25,226,546 3,250,751 ---------- ----------- Cash and cash equivalents, end of period $26,014,851 $11,817,472 =========== =========== See accompanying notes to financial statements. 5 REPLIGEN CORPORATION NOTES TO FINANCIAL STATEMENTS (UNAUDITED) 1. BASIS OF PRESENTATION The financial statements included herein have been prepared by Repligen Corporation (the "Company" or "Repligen"), pursuant to the rules and regulations of the Securities and Exchange Commission for quarterly reports on Form 10-Q and do not include all of the information and footnote disclosures required by generally accepted accounting principles. These financial statements should be read in conjunction with the audited financial statements and notes thereto included in the Company's Form 10-K for the year ended March 31, 2000. In the opinion of management, the accompanying unaudited financial statements include all adjustments, consisting of only normal, recurring adjustments, necessary to present fairly, the consolidated financial position, results of operations and cash flows of the Company. The results of operations for the interim periods presented are not necessarily indicative of results to be expected for the entire year. The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. 2. REVENUE RECOGNITION The Company recognizes revenue related to product sales upon shipment of the product. Research and development revenue derived from collaborative arrangements is recognized as earned under cost plus fixed-fee contracts, or on a straight-line basis over development contracts, which approximates when work is performed and costs are incurred. Research and development expenses in the accompanying statements of operations include funded and unfunded expenses. In addition, under certain contracts, the Company recognizes research and development revenues as milestones are achieved. Licensing and royalties from the Company's licensed technologies are recognized as earned. Unearned income represents amounts received prior to recognition of revenue. Staff Accounting Bulletin (SAB) No. 101, REVENUE RECOGNITION, was issued by the S.E.C in December 1999. SAB 101 will require companies to recognize certain upfront nonrefundable fees and milestone payments over the life of the related alliance when such fees are received in conjunction with alliances that have multiple elements. The Company is required to adopt this new accounting principle through a cumulative charge to the statement of operations, in accordance with Accounting Principles Board Opinion (APB) No. 20, ACCOUNTING CHANGES, no later than the third quarter of fiscal 2001. Management is currently evaluating the effects on SAB No. 101 on the Company's financial statements and, based upon current guidance, does not expect it will have a significant impact on the Company's financial statements. 3. NET LOSS PER SHARE The Company applies Statement of Financial Accounting Standards (SFAS) No. 128, EARNINGS PER SHARE, effective December 15, 1998. SFAS No. 128 establishes standards for computing and presenting earnings per share and applies to entities with publicly held common stock or potential common stock. Basic and diluted net loss per share represents net loss divided by the weighted average number of common shares outstanding during the period. The dilutive effect of the potential common shares consisting of outstanding stock options and warrants is determined using the treasury stock 6 method in accordance with SFAS No. 128. Diluted weighted average shares outstanding at June 30, 2000 and 1999 excluded the potential common shares from warrants and stock options because to do so would be antidilutive for the periods presented. At June 30, 2000, there was outstanding options to purchase 1,367,041 shares of the Company's common stock with a weighted average exercise price of $2.33 per share and warrants to purchase 954,782 shares of the Company's common stock with a weighted average exercise price of $3.91 price per share. At June 30, 1999, there was outstanding options to purchase 1,335,491 shares of the Company's common stock with a weighted average exercise price of $1.82 per share and warrants to purchase 3,207,050 shares of the Company's common stock with a weighted average exercise price of $3.19 per share. 4. CASH EQUIVALENTS AND MARKETABLE SECURITIES The Company applies SFAS No. 115, ACCOUNTING FOR CERTAIN INVESTMENTS IN DEBT AND EQUITY SECURITIES. At June 30, 2000, the Company's cash equivalents and marketable securities are classified as held-to-maturity, as the Company has the positive intent to hold these securities to maturity. The Company considers highly liquid investments purchased with original maturities at the date of acquisition of three months or less to be cash equivalents. Marketable securities are accounted for at amortized cost, which approximates fair value. All of the marketable securities held at June 30, 2000 mature in one year or less. Cash, cash equivalents and marketable securities consist of the following at June 30, 2000 and March 31, 2000: Three Months Ended June 30, 2000 March 31, 2000 Cash and equivalents Commercial paper $ 16,345,160 $ 17,031,292 U.S. Government and Agency securities 6,959,337 7,342,874 Money markets 1,974,165 801,434 Cash 736,189 50,946 ------------ -------------- Total cash and cash equivalents $ 26,014,851 $ 25,226,546 ============ ============== Marketable securities Commercial paper $ 7,821,730 $ 5,854,544 U.S. Government and Agency securities -- 2,951,823 ------------ -------------- $ 7,821,730 $ 8,806,367 ============ ============== 5. INVENTORIES Inventories are stated at the lower of cost (first-in, first-out) or market and consist of the following: Three Months Ended June 30, 2000 March 31, 2000 Raw materials and work-in-process $ 424,964 $ 371,405 Finished goods 118,038 176,043 ------------- -------------- Total $ 543,002 $ 547,448 ============= ============== Work in process and finished goods inventories consist of material, labor, outside processing costs and manufacturing overhead. 6. COMPREHENSIVE INCOME Effective January 1, 1998, the Company adopted SFAS No. 130 REPORTING COMPREHENSIVE INCOME, effective January 1, 1998. SFAS No. 130 establishes standards for reporting and display of comprehensive income and its components in financial statements. Comprehensive income includes all changes in equity during a period except those resulting from investments by owners and distributions to owners. The comprehensive net loss is the same as net loss for all periods presented. 7 7. DISCLOSURES ABOUT SEGMENTS OF AN ENTERPRISE AND SIGNIFICANT CUSTOMERS The Company applies SFAS No. 131, DISCLOSURES ABOUT SEGMENTS OF AN ENTERPRISE AND RELATED INFORMATION, in the fiscal year ended March 31, 1999. SFAS No. 131 establishes standards for reporting information regarding operating segments in annual financial statements and requires selected information for those segments to be presented in interim financial reports issued to stockholders. SFAS No. 131 also establishes standards for related disclosures about products and services and geographic areas. Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision maker, or decision making group, in making decisions now to allocate resources and assess performance. To date, the Company has viewed its operations and manages its business as principally one operating segment. As a result, the financial information disclosed herein, represents all of the material financial information related to the Company's principal operating segment. The following table represents the Company's revenue by geographic area: Three Months Ended June 30, 2000 1999 -------------------- US 77% 65% Europe 23% 31% Other --% 4% ---- ---- Total 100% 100% During the three months ended June 30, 2000, there were two significant customers who accounted for approximately 14% and 20% of the Company's revenues. The related accounts receivable for these customers at June 30, 2000 was $0 and $239,000, respectively. During the three months ended June 30,1999, there were two significant customers which accounted for approximately 25% and 14% of the Company's revenues or $172,000 and $96,000. The related accounts receivable for these two customers at June 30, 1999 was $0 and $96,000, respectively. 8. PATENT APPLICATION PURCHASE In May 2000, the Company purchased from Tolerance Therapeutics LLC the rights to a U.S. patent application claiming the use of CTLA4-Ig in the treatment of diseases of the immune system. Under terms of the agreement, the Company paid cash and issued stock for the purchase. The Company is also obligated to make an additional cash payment if certain conditions are met. ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Cautionary Statement Regarding Forward-Looking Statements Statements in this Quarterly Report on Form 10-Q as well as oral statements that may be made by the Company or by officers, directors or employees of the Company acting on the Company's behalf, that are not historical facts constitute "forward-looking statements" within the meaning of Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements involve known and unknown risks, uncertainties and other factors that could cause the actual results of the Company to be materially different from the historical results or from any results expressed or implied by such forward-looking statements. The Company's future operating results are subject to risks and uncertainties and are dependent upon many factors, including, without limitation, the Company's ability to (i) meet its 8 working capital and future liquidity needs, (ii) successfully implement its strategic growth strategies, (iii) understand, anticipate and respond to rapidly changing technologies and market trends, (iv) develop, manufacture and deliver high quality, technologically advanced products on a timely basis to withstand competition from competitors which may have greater financial, information gathering and marketing resources than the Company, (v) obtain and protect licensing and intellectual property rights necessary for the Company's technology and product development on terms favorable to the Company, (vi) recruit and retain highly talented professionals in a competitive job market, (vii) realize future revenues, (viii) maintain a timeline for clinical activity, (ix) obtain successful results of pending or future clinical trials, (x) continue to establish collaborative arrangements with third parties, and (xi) compete against the biotechnology and pharmaceutical industries. Further information on potential factors that could affect the Company's financial results are included in filings made by the Company from time to time with the Securities and Exchange Commission included in the section entitled "Risk Factors" contained in the Company's Annual Report on Form 10-K for the fiscal year ended March 31, 2000 (File No.000-14656). OVERVIEW We develop innovative therapeutic products for debilitating pediatric diseases for autism, organ transplantation and immune system diseases based on naturally-occurring peptides and proteins. Our lead therapeutic products are secretin for autism and CTLA4-Ig for organ transplantation and autoimmune diseases. On March 9, 1999, we acquired the exclusive rights to patent applications for the use of secretin in the treatment of autism. Autism is a developmental disorder characterized by poor communicative and social skills, repetitive and restricted behaviors and in some patients, gastrointestinal problems and irregular sleep patterns. Secretin is a hormone produced in the small intestine which regulates the function of the pancreas as part of the process of digestion. A form of secretin derived from pigs is approved by the United States Food and Drug Administration ("FDA") for use in diagnosing problems with pancreatic function. Recent anecdotal reports indicate that secretin may have beneficial effects in autism, including improvements in sleep, digestive function, communicative and social behavior. Following media reports of the potential benefits of secretin, more than 2,000 autistic children have been treated with the pig-derived hormone. We intend to manufacture a human, synthetic form of secretin and evaluate it in clinical trials in order to confirm the benefits of secretin in treating autism and to determine the optimal dosing schedule. In February 2000, we were issued a broad U.S. patent covering the use of secretin in the treatment of autism. There are currently no drugs approved by the FDA for the treatment of autism. We are also developing a product named "CTLA4-Ig," which has been shown to suppress unwanted immune responses in animal models of organ transplants and autoimmune diseases, such as lupus or multiple sclerosis, in which the immune system mistakenly attacks the body. Our product candidate is a derivative of a natural protein whose role is to turn-off an immune response. In animal models of organ transplantation and autoimmune diseases, CTLA-Ig has been shown to block the rejection of a transplanted organ or the effects of the autoimmune disease. Initial clinical testing of CTLA4-Ig has been carried out in patients receiving a bone marrow transplant, which is a potential cure for several diseases of the immune system, including leukemia, myeloma, lymphoma and sickle cell anemia. Despite the clinical success of bone marrow transplants, a significant number of patients experience a severe and potentially life-threatening complication known as Graft Versus Host Disease, in which the newly transplanted immune system attacks the host (i.e., the patient). In June 1999, results from a Phase 1 clinical trial reported that treatment of bone marrow from a family member with Repligen's CTLA4-Ig prevented Graft Versus Host Disease in eight of eleven transplant patients We develop, manufacture and market products for the production of therapeutic antibodies. We currently market a line of products for the purification of antibodies based on a naturally occurring protein, Protein A, which can specifically bind to antibodies. Repligen owns composition of matter patents for recombinant Protein A in the United States and in Europe. In December 1998, we entered into a ten year agreement to supply recombinant Protein A to Amersham Pharmacia Biotech, a leading supplier to the biopharmaceutical market. 9 In October 1999, Repligen obtained a license from ChiRhoClin, Inc., a private company, to commercialize two diagnostic secretin products. These products are synthetic, injectable forms of the natural hormone which has been traditionally been used by gastroenterologists to assess the function of the pancreas. A New Drug Application for one of these products, Secretin-Repligen-TM-, has been reviewed by the FDA, which indicated the product could be approved for marketing in the United States pending additional administrative review. Secretin-Repligen-TM- has been granted orphan drug status by the FDA, which means it would be the only secretin product available in the United States for a period of seven years following approval. If Secretin-Repligen-TM- is approved by the FDA, the agreement obligates Repligen to pay ChiRhoClin future milestones in cash and Repligen common stock and royalties. We can not be certain that the FDA will approve Secretin-Repligen-TM-. RESULTS OF OPERATIONS REVENUES Total revenues for the three month period ended June 30, 2000 compared to the three-month period ended June 30, 1999 were approximately $1,173,000 and $688,000, respectively, an increase of approximately $485,000 or 71%. This increase was largely attributable to increased product sales of recombinant Protein A and an increase in investment income due to higher average cash and investment balances Product revenues for the three month period ended June 30, 2000 compared to the three-month period ended June 30, 1999 were approximately $556,000 and $232,000, respectively, an increase of $324,000 or 139%. This increase is due to product shipments to Amersham Pharmacia Biotech and strong demand from monoclonal antibody producers during such period. Investment income for the three month period ended June 30, 2000 compared to the three-month period ended June 30, 1999 was approximately $513,000 and $47,000, respectively, an increase of approximately $466,000 or 991%. This increase is largely attributable to higher average funds available for investment arising principally out of the completion of a private placement of common stock for $22,400,000 on March 9, 2000. Research and development revenues for the three month period ended June 30, 2000 compared to the three-month period ended June 30, 1999 were approximately $30,000 and $379,000, respectively, a decrease of approximately $349,000 or 92%. This decrease is a result of the discontinuation of government sponsored research on drug discovery programs that generated revenue during the three months ended June 30, 1999. Other revenues for the three month period ended June 30, 2000 compared to the three-month period ended June 30, 1999 were approximately $75,000 and $31,000, respectively, an increase of approximately $44,000 or 142%. This increase is primarily due to a termination fee paid by a sublessee in the three months ended June 30, 2000. EXPENSES Total expenses for the three-month period ended June 30, 2000 compared to the three-month period ended June 30, 1999 were approximately $2,144,000 and $1,111,000, an increase of $1,033,000 or 93%. The increase in expenses is attributable to our increased product development expenses and patent acquisition costs paid to Tolerance Therapeutics LLC. Research and development expenses for the three month period ended June 30, 2000 compared to the three-month period ended June 30, 1999 were approximately $1,083,000 and $488,000, respectively, an increase of $595,000 or 122%. The increase in R&D expenses was attributable to costs associated with a patent application acquisition from Tolerance Therapeutics LLC and increased costs associated with Repligen's drug development programs for secretin and CTLA4-Ig. Selling, general and administrative expenses for the three months ended June 30, 2000 compared 10 to the three-month period ended June 30, 1999 were approximately $731,000 and $426,000, respectively, an increase of $305,000 or 72%. The increase is a result of increased spending on shareholder services, legal and patent costs. In addition, during the three months ended June 30, 2000 a non-cash charge was incurred for warrants issued to consultants who provided shareholder services. Cost of products sold for the three months ended June 30, 2000 compared to the three-month period ended June 30, 1999 were approximately $330,000 and $196,000, respectively, an increase of $134,000, or 68%. Cost of products sold in the three months ended June 30, 2000 and 1999 were 59% and 85%, respectively, of product revenues. The decrease in cost of revenues as a percentage of revenue is due primarily to increased Protein A product sales. LIQUIDITY AND CAPITAL RESOURCES We have financed our operations primarily through placements of equity securities and revenues derived from product sales, collaborative research agreements, government grants, and payments on licensing and royalty agreements. Total cash, cash equivalents and marketable securities at June 30, 2000 was $33,837,000, a decrease of $196,000 from $34,033,000 at March 31, 2000. Repligen's operating activities used cash of approximately $599,000 consisting of a net loss from operations incurred during the three months ended June 30, 2000 of approximately $971,000 and a decrease of accrued expenses of $404,000. This decrease in cash was offset by noncash charges of $338,000 for depreciation and amortization and charges associated with the issuance of warrant and stock and a decrease in accounts receivable of $436,000. Our investing activities provided cash of approximately $985,000 from the redemption of marketable securities, offset by capital expenditures of $48,000. Our financing activities provided cash of approximately $450,000 from the proceeds of stock and warrant exercises. Working capital decreased to $33,836,000 at June 30, 2000 from $34,473,000 at March 31, 2000. While Repligen anticipates that the cost of operations will increase in fiscal 2001 as it continues to expand its investment in proprietary product development, Repligen believes it has sufficient funding to satisfy its working capital and capital expenditure requirements for the next twenty-four months. Should Repligen need to secure additional financing to meet its future liquidity requirements, there can be no assurances that Repligen will be able to secure such financing, or that such financing, if available, will be on terms favorable to Repligen. PART II. OTHER INFORMATION Item 1. LEGAL PROCEEDINGS As reported in Form 10-Q dated for the period ended December 31, 1999, on July 17, 1998, Repligen filed a complaint against Bristol Meyers Squibb ("BMS") at the United States District Court for the District of Massachusetts in Boston, Massachusetts seeking correction of inventorship of certain United States patents which claim compositions and methods of use for CTLA4 as well as unspecified monetary damages. A correction of inventorship would result in the University of Michigan being designated as a co-assignee on any corrected BMS patent. Repligen would then have rights to such technology pursuant to a 1992 License Agreement with the University of Michigan, a 1995 Asset Acquisition Agreement with Genetics Institute, and other related agreements. On July 13, 1999, the court dismissed the complaint without prejudice citing a lack of legal standing of Repligen to bring such a complaint. We believe that the court's finding on standing was in error. The court did not rule on the validity of Repligen's inventorship claim. Repligen continues to believe that the University of Michigan is a rightful co-assignee of the aforesaid BMS patents and we intend to continue to pursue the correction of inventorship. Repligen's failure to obtain shared ownership rights in the patents may restrict Repligen's ability to commercialize CTLA4-Ig. We have also filed our own patents related to compositions of matter and methods of use of CTLA4-Ig. In addition, we believe that the patents issued to Bristol-Meyers Squibb do not extend to the use of CTLA4-Ig in bone marrow transplantation. 11 Item 2. CHANGES IN SECURITIES AND USE OF PROCEEDS On April 7, 2000, Repligen issued to each of its investor relation firm and public relations firm, in consideration for services, a warrant, exercisable through July 2001, to purchase 10,000 shares of common stock of Repligen at $8.56 per share. There were no underwriters involved in the transaction. Based on the fact that Repligen was issuing the warrants to only two entities, Repligen issued the warrants without registration and effected the private placement on reliance on Rule 4(2) of the Securities Act of 1933. On April 7, 2000, Repligen issued a warrant, exercisable through July 2000, to purchase 2,900 shares of common stock at $9.00 per share to an existing shareholder. There were no underwriters involved in the transaction. Based on the fact that Repligen was issuing the warrant to only one entity, Repligen issued the warrant without registration and effected the private placement on reliance on Rule 4(2) of the Securities Act of 1933. On May 10, 2000, pursuant to a patent purchase agreement, Repligen issued to Tolerance Therapeutics LLC ("Tolerance"), in partial consideration for the assignment by Tolerance to Repligen of a U.S. patent application claiming the use of CTLA4-Ig in treatment of diseases of the immune system, 30,000 shares of Repligen common stock. There were no underwriters involved in the transaction. Based on representations from Tolerance that it was acquiring the shares for investment purposes only, without a view to selling or distributing the shares, and based on the fact that Repligen was issuing the shares to only one entity, Repligen issued the shares without registration and effected the private placement on reliance on Rule 4(2) of the Securities Act of 1933. Item 6. EXHIBITS AND REPORTS ON FORM 8-K (a) Exhibits EXHIBIT DESCRIPTION ------- ----------- 3.1 Restated Certificate of Incorporation, dated June 30, 1992 and filed July 13, 1992, as amended (filed as Exhibit 3.1 to Repligen Corporation's Quarterly Report on Form 10-Q dated September 30, 1999) 3.2 By-laws (filed as Exhibit 3.4 to Repligen Corporation's Form S-1 Registration Statement No. 33-3959 and incorporated herein by reference) 10.1 * Patent Purchase Agreement dated as of May 9, 2000 by and between Tolerance Therapeutics LLC and Repligen Corporation (filed herewith) 27.1 Financial Data Schedule (filed herewith) *Confidential Treatment has been requested as to omitted portions pursuant to Rule 24b-2 promulgated under the Securities Exchange Act of 1934, as amended (b) Reports on Form 8-K 1. Current Report on Form 8-K filed with the Securities and Exchange Commission on May 19, 2000 (description of patent purchase agreement with Tolerance Therapeutics LLC.). 12 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. REPLIGEN CORPORATION (Registrant) Date: August 11, 2000 By: /s/ WALTER C. HERLIHY -------------------------- Chief Executive Officer and President, Principal Financial and Accounting Officer 13 Repligen Corporation Exhibit Index EXHIBIT DESCRIPTION ------- ----------- 3.1 Restated Certificate of Incorporation, dated June 30, 1992 and filed July 13, 1992, as amended (filed as Exhibit 3.1 to Repligen Corporation's Quarterly Report on Form 10-Q dated September 30, 1999) 3.2 By-laws (filed as Exhibit 3.4 to Repligen Corporation's Form S-1 Registration Statement No. 33-3959 and incorporated herein by reference) 10.1 * Patent Purchase Agreement dated as of May 9, 2000 by and between Tolerance Therapeutics LLC and Repligen Corporation (filed herewith) 27.1 Financial Data Schedule (filed herewith) *Confidential Treatment has been requested as to omitted portions pursuant to Rule 24b-2 promulgated under the Securities Exchange Act of 1934, as amended.