As filed with the Securities and Exchange Commission on December 22, 2000 Registration No. 333- _________ SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CMGI, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 04-2921333 (State or Other Jurisdiction of (I.R.S. Employer Incorporation or Organization) Identification Number) 100 Brickstone Square, Andover, Massachusetts 01810 (Address of Principal Executive Offices) (Zip Code) 2000 Stock Incentive Plan Equilibrium 1995 Stock Option Plan (Full Title of the Plans) DAVID S. WETHERELL President and Chief Executive Officer CMGI, Inc. 100 Brickstone Square Andover, Massachusetts 01810 (Name and Address of Agent for Service) (978) 684-3600 (Telephone Number, Including Area Code, of Agent for Service) Copies to: WILLIAM WILLIAMS II, ESQ. Vice President and General Counsel CMGI, Inc. 100 Brickstone Square Andover, Massachusetts 01810 CALCULATION OF REGISTRATION FEE - ---------------------------------------------------------------------------------------------------------- Proposed Proposed Title of Maximum Maximum Securities Offering Aggregate Amount of to be Amount Price Offering Registration Registered to be Registered Per Share Price Fee - ---------------------------------------------------------------------------------------------------------- Common Stock, $.01 15,500,000 shares $ 5.82815 (1) $ 90,336,325 (1) $ 22,584.09 par value 8,185 shares $ 0.0977 (2) $ 799.68 (2) $ 0.20 10,300 shares $ 0.4886 (2) $ 5,032.58 (2) $ 1.26 4,522 shares $ 49.8391 (2) $ 225,372.42 (2) $ 56.35 ---------------------------------------------------------------------------------------------------------- (1) Estimated solely for the purpose of calculating the registration fee, and based on the average of the high and low prices of the Common Stock on the Nasdaq National Market on December 20, 2000 in accordance with Rules 457(c) and 457(h) under the Securities Act of 1933. (2) All of such shares are issuable upon the exercise of outstanding options to purchase the number of shares at the exercise price listed above. Pursuant to Rule 457(h)(1), the aggregate offering price and the fee have been computed upon the basis of the price at which the options may be exercised.

PART I. INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS The information required by Part I is included in documents sent or given to participants in the Registrant's 2000 Stock Incentive Plan and Equilibrium 1995 Stock Option Plan, pursuant to Rule 428(b)(1) of the Securities Act of 1933, as amended (the "Securities Act"). PART II. INFORMATION REQUIRED IN THE REGISTRATION STATEMENT Item 3. Incorporation of Documents by Reference --------------------------------------- The Registrant is subject to the informational and reporting requirements of Sections 13(a), 14 and 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance therewith files reports, proxy statements and other information with the Securities and Exchange Commission (the "Commission"). The following documents, which are on file with the Commission, are incorporated in this Registration Statement by reference: (1) The Registrant's latest annual report filed pursuant to Section 13(a) or 15(d) of the Exchange Act, or the latest prospectus filed pursuant to Rule 424(b) under the Securities Act that contains audited financial statements for the Registrant's latest fiscal year for which such statements have been filed. (2) All other reports filed pursuant to Section 13(a) or 15(d) of the Exchange Act since the end of the fiscal year covered by the document referred to in (1) above. (3) The description of the common stock of the Registrant, $.01 par value per share (the "Common Stock"), contained in a registration statement filed under the Exchange Act, including any amendment or report filed for the purpose of updating such description. All documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that all shares of Common Stock offered hereby have been sold or which deregisters all shares of Common Stock then remaining unsold, shall be deemed to be incorporated by reference herein and to be part hereof from the date of the filing of such documents. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement. Item 4. Description of Securities ------------------------- Not applicable. Item 5. Interests of Named Experts and Counsel -------------------------------------- The legality of the Common Stock being offered hereby will be passed upon for the Registrant by Hale and Dorr LLP, Boston, Massachusetts.

Item 6. Indemnification of Directors and Officers ----------------------------------------- Section 145 of the Delaware General Corporation Law grants the Registrant the power to indemnify each person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit, or proceeding, whether civil, criminal, administrative, or investigative by reason of the fact that he is or was a director, officer, employee or agent of the Registrant, or is or was serving at the request of the Registrant as a director, officer, employee or agent of another corporation, partnership, joint venture, trust, or other enterprise, against expenses (including attorneys' fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by him in connection with such action, suit or proceeding if he acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the Registrant, and with respect to any criminal action or proceeding, had no reasonable cause to believe his conduct was unlawful; provided, however, no indemnification shall be made in connection with any proceeding brought by or in the right of the Registrant where the person involved is adjudged to be liable to the Registrant except to the extent approved by a court. Article NINTH of the Registrant's Restated Certificate of Incorporation and Article VII of the Registrant's Restated By-laws provide that the Registrant shall, to the fullest extent permitted by applicable law, indemnify each person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit, or proceeding by reason of the fact that he is or was, or has agreed to become, a director or officer of the Registrant, or is or was serving at the written request of the Registrant, as a director, officer or trustee of, or in a similar capacity with, another corporation, partnership, joint venture, trust, or other enterprise. The indemnification provided for in each of Article NINTH and Article VII is expressly not exclusive of any other rights to which those seeking indemnification may be entitled under any law, agreement, or vote of stockholders or disinterested directors or otherwise, and shall inure to the benefit of the heirs, executors, and administrators of such persons. Article VII also provides that the Registrant shall have the power to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee, or agent of the Registrant, or is or was serving at the request of the Registrant, as a director, trustee, partner, officer, employee, or agent of another corporation, partnership, joint venture, trust, or other enterprise, against any liability asserted against and incurred by such person in any such capacity. Pursuant to Section 102(b)(7) of the Delaware General Corporation Law, Article EIGHTH of the Registrant's Restated Certificate of Incorporation eliminates a director's personal liability for monetary damages to the Registrant and its stockholders for breaches of fiduciary duty as a director, except in circumstances involving a breach of a director's duty of loyalty to the Registrant or its stockholders, acts or omissions not in good faith or which involve intentional misconduct or knowing violation of the law, self-dealing, or the unlawful payment of dividends or repurchase of stock. The Registrant maintains an insurance policy on behalf of itself and certain of its subsidiaries, and on behalf of the directors and officers thereof, covering certain liabilities which may arise as a result of the actions of the directors and officers. The Registrant has entered into agreements with all of its directors affirming the Registrant's obligation to indemnify them to the fullest extent permitted by law and providing various other protections.

Item 7. Exemption from Registration Claimed ----------------------------------- Not applicable. Item 8. Exhibits -------- The Exhibit Index immediately preceding the exhibits is incorporated herein by reference. Item 9. Undertakings ------------ 1. The undersigned Registrant hereby undertakes: (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement: (i) To include any prospectus required by Section 10(a)(3) of the Securities Act; (ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post- effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement; and (iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement; provided, however, that paragraphs (i) and (ii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or 15(d) of the Exchange Act that are incorporated by reference in the Registration Statement. (2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new Registration Statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. (3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering. 2. The undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in the Registration Statement shall be deemed to be a new Registration Statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. 3. Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore,

unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

SIGNATURES Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Andover, Commonwealth of Massachusetts on December 22, 2000. CMGI, INC. By: /s/ David S. Wetherell ---------------------------------- David S. Wetherell Chairman of the Board, President and Chief Executive Officer POWER OF ATTORNEY We, the undersigned officers and directors of CMGI, Inc. hereby severally constitute David S. Wetherell, Andrew J. Hajducky III and William Williams II, and each of them singly, our true and lawful attorneys with full power to them, and each of them singly, to sign for us and in our names in the capacities indicated below, the Registration Statement on Form S-8 filed herewith and any and all subsequent amendments to said Registration Statement, and generally to do all such things in our names and behalf in our capacities as officers and directors to enable CMGI, Inc. to comply with all requirements of the Securities and Exchange Commission, hereby ratifying and confirming our signatures as they may be signed by said attorneys, or any of them, to said Registration Statement and any and all amendments thereto.

Pursuant to the requirements of the Securities Act, this Registration Statement has been signed by the following persons in the capacities indicated on December 22, 2000. Signature Title --------- ----- /s/ David S. Wetherell Chairman of the Board of Directors, President - ----------------------------------------- and Chief Executive Officer (Principal David S. Wetherell Executive Officer) /s/ Andrew J. Hajducky III Executive Vice President, Chief Financial - ----------------------------------------- Officer and Treasurer (Principal Financial and Andrew J. Hajducky III Accounting Officer) /s/ William Berkman Director - ----------------------------------------- William Berkman /s/ Avram Miller Director - ----------------------------------------- Avram Miller /s/ Robert Ranalli Director - ----------------------------------------- Robert Ranalli /s/ Harold F. Enright, Jr. Director - ----------------------------------------- Harold F. Enright, Jr.

EXHIBIT INDEX Exhibit Number Description - -------- ----------- 4.1 Specimen Certificate of Common Stock, $.01 par value per share, of the Registrant is incorporated herein by reference to Exhibit 4.1 to the Registrant's Annual Report on Form 10-K for the fiscal year ended July 31, 1999 (File No. 000-23262) 5 Opinion of Hale and Dorr LLP 23.1 Consent of Hale and Dorr LLP (included in Exhibit 5) 23.2 Consent of KPMG LLP, independent accountants 23.3 Consent of KPMG LLP, independent accountants (Flycast Communications Corporation) 23.4 Consent of KPMG LLP, independent accountants (AdForce, Inc.) 24 Power of Attorney (included in the signature pages of this Registration Statement)

EXHIBIT 5 HALE AND DORR LLP Counsellors At Law 60 State Street, Boston, Massachusetts 02109 617-526-6000 * FAX 617-526-5000 December 21, 2000 CMGI, Inc. 100 Brickstone Square Andover, Massachusetts 01810 Re: 2000 Stock Incentive Plan Equilibrium 1995 Stock Option Plan Ladies and Gentlemen: We have assisted in the preparation of a Registration Statement on Form S-8 (the "Registration Statement") to be filed with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the "Securities Act"), relating to an aggregate of 15,523,007 shares of Common Stock, $.01 par value per share (the "Shares"), of CMGI, Inc., a Delaware corporation (the "Company"), issuable under the Company's above-referenced employee benefit plans (collectively, the "Plans"). The Equilibrium 1995 Stock Option Plan was assumed pursuant to the Agreement and Plan of Merger, dated as of December 14, 1999, by and among the Company, TX Corp., a Delaware corporation and a wholly owned subsidiary of the Company, and Equilibrium, a California corporation. We have examined the Restated Certificate of Incorporation of the Company, as amended to date, and the Amended and Restated By-Laws of the Company, and originals, or copies certified to our satisfaction, of all pertinent records of the meetings of the directors and stockholders of the Company, the Registration Statement and such other documents relating to the Company as we have deemed material for the purposes of this opinion. In our examination of the foregoing documents, we have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted to us as copies, the authenticity of the originals of such latter documents and the legal competence of all signatories to such documents. We assume that the appropriate action will be taken, prior to the offer and sale of the Shares in accordance with the Plans, to register and qualify the Shares for sale under all applicable state securities or "blue sky" laws. We express no opinion herein as to the laws of any state or jurisdiction other than the state laws of The Commonwealth of Massachusetts, the Delaware General Corporation Law statute and the federal laws of the United States of America. Based upon and subject to the foregoing, we are of the opinion that the Shares have been duly authorized for issuance and, when the Shares are issued and paid for in accordance with the terms and conditions of the Plans, the Shares will be validly issued, fully paid and nonassessable. It is understood that this opinion is to be used only in connection with the offer and sale of the Shares while the Registration Statement is in effect.

Please note that we are opining only as to the matters expressly set forth herein, and no opinion should be inferred as to any other matters. We hereby consent to the filing of this opinion with the Commission as an exhibit to the Registration Statement in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Securities Act and to the use of our name therein under the caption "Interests of Named Experts and Counsel." In giving such consent, we do not hereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Commission. Very truly yours, /s/ HALE AND DORR LLP HALE AND DORR LLP

EXHIBIT 23.2 CONSENT OF INDEPENDENT ACCOUNTANTS The Board of Directors CMGI, Inc. We consent to the use of our reports incorporated herein by reference. /s/ KPMG LLP KPMG LLP Boston, Massachusetts December 22, 2000

Exhibit 23.3 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the incorporation by reference in this registration statement on Form S-8 of CMGI, Inc. of our report dated March 8, 2000, with respect to the consolidated balance sheet of Flycast Communications Corporation as of December 31, 1999 and the related consolidated statements of operations, common stockholders' equity (deficit) and cash flows for the year ended December 31, 1999, which report appears in the Form 8-K of CMGI, Inc. filed August 17, 2000. /s/ KPMG LLP KPMG LLP San Francisco, California December 22, 2000

Exhibit 23.4 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the incorporation by reference in this registration statement on Form S-8 of CMGI, Inc. of our report dated March 31, 2000, with respect to the consolidated balance sheet of AdForce, Inc. as of December 31, 1999 and the related consolidated statements of operations, common stockholders' equity (deficit) and cash flows for the year ended December 31, 1999, which report appears in the Form 8-K of CMGI, Inc. filed August 17, 2000. /s/ KPMG LLP KPMG LLP San Francisco, California December 22, 2000