UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2002 Check here if Amendment [ ]; Amendment Number: ------- This Amendment (Check only one): [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: CMGI, Inc. 100 Brickstone Square Andover, MA 01810 Form 13F File Number: 028-05757 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Thomas Oberdorf Chief Financial Officer and Treasurer (978) 684-3600 Signature, Place and Date of Signing: /s/ Thomas Oberdorf - ------------------- Andover, Massachusetts May 14, 2002 Report Type (Check only one): [X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [_] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [_] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other manager(s).)

Form 13F SUMMARY PAGE REPORTING MANAGER: CMGI, Inc. Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 11 -- Form 13F Information Table Value Total: $ 70,459 (thousands) --------- List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. None

FORM 13F INFORMATION TABLE REPORTING MANAGER: CMGI, Inc. ITEM 4: ITEM 5: FAIR SHARES ITEM 8: ITEM 2: ITEM 3: MARKET OR ITEM 6: VOTING AUTHORITY ITEM 1: TITLE OF CUSIP VALUE PRINCIPAL SH/ INVESTMENT ITEM 7: (A) (B) (C) NAME OF ISSUER CLASS NUMBER (000) AMOUNT PRN DISCRETION MANAGERS SOLE SHARED NONE CMGI, Inc. COM 125750109 353 261,642 SH DEFINED 261,642 divine, inc. COM 255404105 527 1,053,187 SH SOLE 1,053,187 Engage, Inc. COM 292827102 37,158 148,630,054 SH SOLE 148,630,054 GLOBALMEDIA.COM COM 37935A109 9 1,822,127 SH DEFINED 1,822,127 MotherNature.com, Inc. COM 61978K105 12 1,236,674 SH DEFINED 1,236,674 NaviSite, Inc. COM 63935M109 20,055 69,154,391 SH SOLE 69,154,391 NexPrise, Inc. (2) COM 163595101 1,312 213,315 SH DEFINED 213,315 PTEK Holdings, Inc. COM 69366M104 154 37,500 SH DEFINED 37,500 Techlabs, Inc. (1) COM 87833L103 38 960,307 SH DEFINED 960,307 Terra Networks, S.A. COM 1,114 142,966 SH DEFINED 142,966 Vicinity Corporation COM 925653107 9,736 4,636,422 SH DEFINED 4,636,422 1. Yesmail, Inc., a wholly owned subsidiary of CMGI, Inc., currently holds 12,500 shares of Techlabs, Inc. Pursuant to the Agreement for the Purchase and Sale of Assets, dated December 7, 1999, an additional 947,807 shares are issuable to Yesmail, Inc., but are not yet issued. The issuance of these shares is currently in dispute. 2. These figures reflect NexPrise, Inc.'s April 22, 2002 1 for 15 reverse stock split.