Filing Pursuant to Rule 424(b)(3) Registration Statement No. 333-48272 PROSPECTUS SUPPLEMENT NO. 2 DATED MAY 10, 2001 TO PROSPECTUS DATED NOVEMBER 7, 2001 TERAYON COMMUNICATION SYSTEMS, INC. 2,969,062 Shares of Common Stock Please read this prospectus supplement in conjunction with the prospectus dated November 7, 2001 (the "Prospectus"). The table on page 19 of the Prospectus setting forth information concerning the selling stockholders is superseded by the following table: SELLING STOCKHOLDERS In our acquisition of Mainsail which we consummated in September 2000, we issued to all of the selling stockholders shares of our common stock, and we agreed to register all of those shares for resale. We also agreed to use reasonable efforts to keep the registration statement effective until September 30, 2001. Our registration of the shares of common stock does not necessarily mean that the selling stockholders will sell all or any of the shares. The following table sets forth certain information regarding the beneficial ownership of the common stock, as of June 15, 2001, by each of the selling stockholders. The information provided in the table below with respect to each selling stockholder has been obtained from that selling stockholder. Except as otherwise disclosed below, none of the selling stockholders has, or within the past three years has had, any position, office or other material relationship with us. Because the selling stockholders may sell all or some portion of the shares of common stock beneficially owned by them, we cannot estimate the number of shares of common stock that will be beneficially owned by the selling stockholders after this offering. In addition, the selling stockholders may have sold, transferred or otherwise disposed of, or may sell, transfer or otherwise dispose of, at any time or from time to time since the date on which they provided the information regarding the shares of common stock beneficially owned by them, all or a portion of the shares of common stock beneficially owned by them in transactions exempt from the registration requirements of the Securities Act of 1933. Beneficial ownership is determined in accordance with Rule 13d-3(d) promulgated by the Commission under the Securities Exchange Act of 1934. Unless otherwise noted, each person or group identified possesses sole voting and investment power with respect to shares, subject to community property laws where applicable. None of the share amounts set forth below represents more than 1% of our outstanding stock as of June 15, 2001, adjusted as required by rules promulgated by the SEC. Selling Stockholder Number of Shares Being Offered Held in Escrow ----------------------------------------------------------------------------------------------------- Boris Zats 490,032 490,032 265,768 John Walsh 144,511 144,511 86,706 Yuri Zats 147,270 147,270 86,981 Alex Lubivy 150,030 150,030 87,257 Lucy Zats 144,511 144,511 86,706 Vlad Cherednichenko 144,511 144,511 86,706 A. Lailan Fell TTEE U/A DTD 08/25/1995 144 144 14 By Alethea Lailan Fell Trust Andrew Alcon 558 558 56 Antoinette M. Belt 58 58 5 Benedict A. Itri 58 58 5 Billante Living Trust dtd Jan. 17, 2000 13 13 1 c/o Andrea Billante, Trustee Bobby R. Johnson, Jr. 58 58 5 Brody Family Trust U/D/T 8/15/86; 288 288 29 William R. Brody, Trustee C. Preston Butcher and Carolyn F. 288 288 29 Butcher, Trustees of the CPB/CFB Revocable Trust U/D/T dated February 2, 1998 Chad W. Keck 577 577 57 Charles S. and Nan Y. Strauch Living 57 57 5 Trust dtd 10/26/82; Charles/Nan Strauch, Trustees Charles S. and Nan Y. Strauch Living 577 577 57 Trust dtd 10/26/82; Charles/Nan Strauch, Trustees Church Pension Fund 43,245 43,245 4,324 Civil Aviation Authority Pension 17,298 17,298 1,729 Scheme; Nortrust Nominees Limited, Custodian Computrol Limited, BVI 5,766 5,766 577 Barbara N. Lubash 1,524 1,524 152 John Breese Mumford and Christine Joyce 27,562 27,562 2,756 Mumford Trusts, U/D/T dtd 10/13/83; John Breese Mumford and Christine Joyce Mumford, Trustees John Breese Mumford and Christine Joyce 1,442 1,442 144 Mumford Trusts, U/D/T dtd 10/13/83; John Breese Mumford and Christine Joyce Mumford, Trustees Milder Community Property Trust dtd 33,522 33, 522 3,352 11/7/91; Donald B. and Terri L. Milder, Trustees Mumford Special Trust #1 dtd 12/17/87; 1,490 1,490 149 Kenneth A. Eldred, Trustee Mumford Special Trust #2 dtd 12/17/87; 1,490 1,490 149 Kenneth A. Eldred, Trustee Mumford Special Trust #3 dtd 12/17/87; 1,490 1,490 149 Kenneth A. Eldred, Trustee Mumford Special Trust #4 dtd 12/17/87; 1,490 1,490 149 Kenneth A. Eldred, Trustee Rich Shapero 33,522 33,522 3,352 Robert A. Hoff 33,522 33,522 3,352 Seth Neiman 16,761 16,761 1,676 Dench Living Trust dtd 6/16/94; Robert 577 577 57 H. Dench and Gloria E. Dench, Trustees Douglas Metz 58 58 5 Gary Rosenbach 288 288 29 George A. Needham 577 577 57 Harvard Private Capital Holdings, Inc. 57,660 57,660 5,766 Heimbuck Family Trust dtd 8/13/85; 577 577 57 Jeffrey Heimbuck, Trustee Howard S. Flagg 58 58 5 John F. Nicholson 289 289 29 John Selling 144 144 14 Kenneth and Roberta Eldred Revocable 1,442 1,442 144 Trust, U/A dtd 1/28/83; Kenneth and Roberta Eldred, Trustees Leeway & Co. 33,484 33,484 3,348 Lorinda Mosca 10 10 1 Louis E. Hallman, III and Sherry L. 288 288 29 Meisman Family Trust, Louis E. Hallman, III & Sherry L. Meisman, Co-Trustees U.T.D. 5/29/98 Lydia Anderson 144 144 14 Massachusetts Institute of Technology 40,362 40,362 4,036 Mellon Bank, N.A. as Trustee for the 28,831 28,831 2,883 Bell Atlantic Master Trust Needham & Company, Inc. 2,885 2,885 286 Northern Trust Company as Trustee for 53,007 53,007 5,301 Lucent Technologies Inc. Master Pension Trust Norwest Equity Capital, L.L.C. 11,532 11,532 1,153 Oberlin College 11,532 11,532 1,153 Okoboji Trust dtd 6/19/85; James F. 1,442 1,442 144 Willenborg, Trustee Price Trust U/T/A dtd 10/5/84, as 577 577 57 amended; Thomas A. Price, Trustee Raj Rajaratnam 577 577 57 Rector and Visitors of The University 23,064 23,064 2,306 of Virginia Richard I. Keeler Revocable Trust 288 288 29 Restated dtd 7/19/94, As May Be Amended Robert C. Hawk 57 57 5 Robert C. Hawk 288 288 29 Robert M. Fell 144 144 14 Roxanne Cooley 26 26 3 SBC Master Pension Trust 57,660 57,660 5,766 Silicon Valley Bancshares 1,441 1,441 144 Stradling, Yocca, Carlson & Rauth 577 577 57 Profit Sharing Plan; CNA Trust Corporation, Trustee The William and Flora Hewlett Foundation 57,660 57,660 5,766 University of Chicago 23,064 23,064 2,306 Wallace R. Hawley Family Holdings, Ltd. 1,153 1,153 115 Walton Investment, L.L.C. 11,532 11,532 1,153 Wellcome Trust; Wellcome Trust, Ltd., 43,245 43,245 4,325 Trustee William P. Cargile 58 58 5 WS Investment Company 96A 288 288 29 Yale University 43,245 43,245 4,325 VLG Investments 7,949 7,949 794 Green Family Trust 1,987 1,987 198 CAN Trust FBO Elias J. Blawie 1,987 1,987 198 Newbury Ventures, L.P. 84,960 84,960 8,476 Newbury Ventures Associates, L.P. 64,423 64,423 6,427 Comm Ventures, L.P. 193,584 193,584 19,361 Newbury Ventures Cayman, L.P. 22,840 22,840 2,284 Worldview Technology Partners I, L.P. 135,992 135,992 13,599 Worldview Technology Int'l I, L.P. 53,003 53,003 5,003 Worldview Strategic Partners I, L.P. 11,713 11,713 1,171 Nokia Corporation 66,903 66,903 6,690 Lucent Venture Partners, Inc. 82,118 82,118 8,746 John F. Hanley 1,763 1,763 0 The Lawrence Trust: DTD 12/18/95; Maureen Lawrence & Augustus Lawrence III as TTEES 1,175 1,175 0 Litman Family Trust 1998; Arle Litman as TTEE, DTD 8/98 588 588 0 Hassan Parsa 588 588 0 Neil Vasant 881 881 0 Marc Rappoport 213 213 0 Peter Rokkos 67 67 0 LVP I LLC 67 67 Issie Rabinovitch 27,597 27,597 2,759 Donald Thorne 22,078 22,078 2,207 George Marcus 11,039 11,039 1,103 Robert Rabin & Joan Rabin TTEES U/A DTD 7/16/82 11,039 11,039 1,103 Ron Snow 11,039 11,039 1,103 Dan Heffernan 11,039 11,039 1,103 Rabinovitch Ventures Limited 27,597 27,597 2,759 Howard Neff 11,039 11,039 1,103 Yuri Sharonin 24,777 24,777 2,477 Vladimir Taft 16,357 16,357 1,635 Robert M. Lefkowitz 18,866 18,866 1,886 Nicolay Makarov 15,003 15,003 1,500 Ardeshir Bordbar 13,698 13,698 1,369 Zinovy Krasnovsky 20,673 20,673 2,067 Kurt Vogel 14,451 14,451 1,445 Roy Wang 1,685 1,685 168 Owen Frances 14,451 14,451 1,445 Edmund Johnson 2,408 2,408 240 Lynette Webber 722 722 72 Vlad Vochegursky 2,890 2,890 289 Boris Zundelevich 3,371 3,371 337 Oleg Kipnis 90 90 9 Ana Raveica 75 75 7 John Trick 481 481 48 * 296,866 shares of our common stock are held in the name of Embassy & Co. pursuant to an Escrow Agreement with the former stockholders of Mainsail. 578,041 shares of our common stock are held in the name of Embassy & Co. pursuant to Retention Escrow Agreements with certain former stockholders of Mainsail.