1 As filed with the Securities and Exchange Commission on November 14, 2000 OMB APPROVAL OMB Number: 3235-0515 Expires: January 31, 2002 Estimated average burden hours per response: 43.5 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 Schedule TO Tender Offer Statement under Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 1) ADAC Laboratories (Name of Subject Company (Issuer)) Philips Medical Acquisition Corporation a Wholly Owned Subsidiary of Philips Holding USA Inc. a Wholly Owned Subsidiary of Koninklijke Philips Electronics N.V. (Names of Filing Persons) COMMON STOCK, NO PAR VALUE (Title of Class of Securities) 005313200 (CUSIP Number of Class of Securities) William E. Curran President Philips Holding USA Inc. 1251 Avenue of the Americas New York, New York 10020 (Name, address, and telephone numbers of person authorized to receive notices and communications on behalf of filing persons) with a copy to: Matthew G. Hurd, ESQ. Sullivan & Cromwell 125 Broad Street New York, New York 10004-2498 (212) 558-4000 2 - -------------------------------------------------------------------------------- CALCULATION OF FILING FEE Transaction valuation Amount of filing fee - -------------------------------------------------------------------------------- [X] Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing. Amount Previously Paid: $97,971 Form or Registration No.: 005-32403 Filing Party: Koninklijke Philips Electronics N.V. Date Filed: November 14, 2000 [ ] Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer. Check the appropriate boxes below to designate any transactions to which the statement relates: [X] third-party tender offer subject to Rule 14d-1. [ ] issuer tender offer subject to Rule 13e-4. [ ] going-private transaction subject to Rule 13e-3. [ ] amendment to Schedule 13D under Rule 13d-2. Check the following box if the filing is a final amendment reporting the results of the tender offer:[ ] The information in the Offer to Purchase, including all schedules and annexes thereto, is hereby incorporated by reference in response to all the items of this Schedule TO, except as otherwise set forth below. Items 1-9. Summary Term Sheet. Subject Company Information. Identity and Background of Filing Person. Terms of the Transaction. Past Contacts, Transactions, Negotiations and Agreements. Purposes of the Transaction and Plans or Proposals. Source and Amount of Funds or Other Consideration. Interest in Securities of the Subject Company. Persons/Assets, Retained, Employed, Compensated or Used. Items 1 through 9 of this Schedule TO are hereby amended and restated to incorporate the information set forth in the corrected Offer to Purchase set forth in Exhibit 99(a)(1) of this Amendment No. 1. The information in the corrected Offer to Purchase has been included in the printed Offer to Purchase distributed to shareholders of the Company on and after November 14, 2000. Item 12. Exhibits. The following are attached as exhibits to this Schedule TO: 99(a)(1) Offer to Purchase 3 SIGNATURE After due inquiry and to the best of my knowledge and belief, we certify that the information set forth in this statement is true, complete and correct. PHILIPS MEDICAL ACQUISITION CORPORATION By: /s/ WILLIAM E. CURRAN -------------------------------------------- Name: William E. Curran Title: President and Director PHILIPS HOLDING USA INC. By: /s/ WILLIAM E. CURRAN -------------------------------------------- Name: William E. Curran Title: Chairman, President and Director KONINKLIJKE PHILIPS ELECTRONICS N.V. By: /s/ COR BOONSTRA -------------------------------------------- Name: Cor Boonstra Title: President, Chairman of the Board of Management and the Group Management Committee By: /s/ JAN H.M. HOMMEN -------------------------------------------- Name: Jan H.M. Hommen Title: Executive Vice-President, Chief Financial Officer, Member of the Board of Management and the Group Management Committee Date: November 14, 2000 3 4 EXHIBIT INDEX EXHIBIT NUMBER EXHIBIT DESCRIPTION - ------------ ------------------- 99(a)(1) Offer to Purchase