SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13D-1(A) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13D-2(A) (AMENDMENT NO. 1) RADVISION LTD. (Name of Issuer) ORDINARY SHARES (Title of Class of Securities) M81869 10 5 (CUSIP Number) MICHAEL KUTSCHENREUTER Siemens Aktiengesellschaft INFORMATION & COMMUNICATIONS NETWORKS GROUP HOFMANNSTRASSE 51, D-81359 MUNICH FEDERAL REPUBLIC OF GERMANY 011 49 89 722 40440 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) Copy to: KEVIN M. ROYER SIEMENS CORPORATION 153 E. 53RD STREET New York, NY 10022 (212) 258-4000 APRIL 18, 2002 (Date of event which requires filing of this statement) |_| Check box if the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g). (Continued on following pages) (Page 1 of 6) ------------------------ ---------------------- CUSIP No. M81869 10 5 13D Page 2 of 6 ------------------------ ---------------------- ============ =================================================================== 1. NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON SIEMENS AKTIENGESELLSCHAFT ------------ ------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a)|_| (b)|_| ------------ ------------------------------------------------------------------- 3. SEC USE ONLY ------------ ------------------------------------------------------------------- 4. SOURCES OF FUNDS WC ------------ ------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) |_| ------------ ------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION FEDERAL REPUBLIC OF GERMANY ------------------------- ------- ---------------------------------------------- 7. SOLE VOTING POWER NUMBER OF UNITS BENEFICIALLY OWNED BY EACH 1,396,303 REPORTING PERSON WITH ------- ---------------------------------------------- 8. SHARED VOTING POWER 0 ------- ---------------------------------------------- 9. SOLE DISPOSITIVE POWER 1,396,303 ------- ---------------------------------------------- 10. SHARED DISPOSITIVE POWER 0 ------------ ------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,396,303 ------------ ------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES |_| ------------ ------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.7% ------------ ------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON CO ============ =================================================================== (Page 2 of 6) AMENDMENT NO. 1 TO SCHEDULE 13D This Amendment No. 1, which relates to ordinary shares, par value NIS 0.1 per share (the "Ordinary Shares") of RADVision Ltd., a corporation organized under the laws of Israel (the "Issuer"), amends and supplements the Statement on Schedule 13D filed on March 27, 2000 with the Securities and Exchange Commission (the "Commission") by Siemens Aktiengesellschaft, a corporation organized under the laws of the Federal Republic of Germany ("Siemens AG"). The following Items of the Statement are hereby supplemented and/or amended as follows: Item 1. Identity and Background The directors and executive officers of Siemens AG are set forth on Schedule I, attached hereto. Schedule I sets forth the following information with respect to each such person: i. name; ii. business address (or residence address where indicated); iii. present principal occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted; and iv. citizenship. During the last five years, neither Siemens AG, nor any person named in Schedule I attached hereto has been (a) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (b) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. Item 5 Interest in Securities of the Issuer (a)-(b) Siemens AG currently beneficially owns 1,396,303 Ordinary Shares. In the Issuer's Annual Report on Form 10-K for the fiscal year ended December 31, 2001 filed with the Commission on March 19, 2002, the Issuer reported that a total of 18,071,559 Ordinary Shares were issued and outstanding. Based upon such information, Siemens AG currently beneficially owns approximately 7.7% of the Issuer's issued and outstanding Ordinary Shares. (c) Siemens AG sold an aggregate of 228,925 Ordinary Shares for aggregate net proceeds of $1,304,108.92 in the following open market transactions: --------------------- ------------------ ------------------- ------------------ Date Number of Price Per Gross Proceeds Ordinary Shares Ordinary Share Sold --------------------- ------------------ ------------------- ------------------ --------------------- ------------------ ------------------- ------------------ April 10, 2002 37,700 $5.8000 $218,660.00 --------------------- ------------------ ------------------- ------------------ --------------------- ------------------ ------------------- ------------------ April 11, 2002 90,000 $5.7206 $514,854.00 --------------------- ------------------ ------------------- ------------------ --------------------- ------------------ ------------------- ------------------ April 12, 2002 53,015 $5.7003 $302,201.40 --------------------- ------------------ ------------------- ------------------ --------------------- ------------------ ------------------- ------------------ April 18, 2002 48,210 $5.8046 $279,839.50 --------------------- ------------------ ------------------- ------------------ --------------------- ------------------ ------------------- ------------------ TOTALS: 228,925 $1,315,555.17 --------------------- ------------------ ------------------- ------------------ (Page 3 of 6) SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: April 24, 2002 Siemens aktiengesellschaft By: /s/ Michael Kutschenreuter -------------------------------- Name: Michael Kutschenreuter Title: Chief Financial Officer, Siemens AG ICN (Page 4 of 6) SCHEDULE I The name and position of each of the executive officers and members of the Managing Board of Directors of Siemens AG are set forth below. Each of these persons is a Member of the Managing Board of Directors of Siemens AG and each of these persons is a citizen of the Federal Republic of Germany. Name Position with Siemens AG and Principal Business Address Occupation Dr. Heinrich von Pierer President and CEO, Wittelsbacherplatz 2 Head of Corporate Development Department D-80333 Munich Special Responsibilities: Corporate Federal Republic of Communications and Chief Germany Economist/Corporate Relations Corporate Centers Dr. Volker Jung Special Responsibilities: Wittelsbacherplatz 2 Information and Communications Business D-80333 Munich Segments, Federal Republic of Regions Africa, Middle East, C.I.S. Germany Dr. Edward G. Krubasik Special Responsibilities: Werner-von-Siemens-Strasse Siemens Dematic, Siemens Building 50 Technologies, Transportation Systems and D-91052 Erlangen Siemens VDO Groups, Corporate Technology Federal Republic of Department Germany Mr. Heinz-Joachim Neuburger Chief Financial Officer Wittelsbacherplatz 2 Head of Corporate Finance Department D-80333 Munich Special Responsibilities: Federal Republic of Financial Services and Real Estate Germany Prof. Peter Pribilla Head of Corporate Personnel Wittelsbacherplatz 2 Special Responsibilities: Management D-80333 Munich Consulting Personnel Federal Republic of Germany Mr. Jurgen Radomski Special Responsibilities: Werner-von-Siemens-Strasse Medical Solutions and Lightning 50 Business Segments, Corporate D-91052 Erlangen Information and Operations and Global Federal Republic of Procurement and Logistics Corporate Germany Centers Region Europe (Page 5 of 6) Name Position with Siemens AG and Principal Business Address Occupation Mr. Uriel J. Sharef Special Responsibilities: Freyeslebenstrasse 1 Power Generation and Power Transmission D-91050 Erlangen and Distribution Business Segments Federal Republic of Region The Americas Germany Dr. Klaus Wucherer Special Responsibilities: Wittelsbacherplatz 2 Automation and Drives and Industrial D-80333 Munich Solutions and Services Groups Federal Republic of Region Asia and Australia Germany Mr. Rudi Lamprecht Head of Information and Communication Otto-Hahn-Ring 6 Mobile Group D-81739 Munich Federal Republic of Germany Prof. Erich R. Reinhardt Head of Medical Solutions Group Henkestrasse 127 D-91052 Erlangen Federal Republic of Germany Prof. Claus Weyrich Head of Corporate Technology Department Otto-Hahn-Ring 6 D-81739 Munich Federal Republic of Germany (Page 6 of 6)