-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, Heg0FXGMEldKm+k5XUqZiRAYHqhv0I5aoD/HyJbnFFKm+w3g14bOddiNlYeYgScn mwrv0QAjJ5IbprnIx/vbxg== 0000935836-00-000100.txt : 20000215 0000935836-00-000100.hdr.sgml : 20000215 ACCESSION NUMBER: 0000935836-00-000100 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20000214 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: PHARMCHEM LABORATORIES INC CENTRAL INDEX KEY: 0000876645 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-MEDICAL LABORATORIES [8071] IRS NUMBER: 770187280 STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: SEC FILE NUMBER: 005-42072 FILM NUMBER: 542933 BUSINESS ADDRESS: STREET 1: 1505 A OBRIEN DR CITY: MENLO PARK STATE: CA ZIP: 94025 BUSINESS PHONE: 6503286200 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: PALO ALTO INVESTORS CENTRAL INDEX KEY: 0001012084 STANDARD INDUSTRIAL CLASSIFICATION: [] FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 431 FLORENCE ST STREET 2: STE 200 CITY: PALO ALTO STATE: CA ZIP: 94301 MAIL ADDRESS: STREET 1: 431 FLORENCE ST STREET 2: STE 200 CITY: PALO ALTO STATE: CA ZIP: 94301 SC 13G/A 1 OMB APPROVAL OMB Number:3235-0145 Expires: August 31, 1999 Estimated average burden hours per response 14.90 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6) PharmChem Laboratories, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 717133102 (CUSIP Number) December 31, 1999 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: / X / Rule 13d-1(b) /___/ Rule 13d-1(c) /___/ Rule 13d-1(d) * The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1745 (3-98) Page 1 of 6 CUSIP No. 717133102 Page 2 of 7 Pages - ---------------------------------------------------------------- 1 NAME OF REPORTING PERSONS IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Palo Alto Investors - ---------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a)/ X / (b)/ / - ---------------------------------------------------------------- 3 SEC USE ONLY - ---------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION California - ---------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 0 BENEFICIALLY --------------------------------------- OWNED BY 6 SHARED VOTING POWER EACH 1,264,100 REPORTING --------------------------------------- PERSON 7 SOLE DISPOSITIVE POWER WITH 0 --------------------------------------- 8 SHARED DISPOSITIVE POWER 1,264,100 - ---------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,264,100 - ---------------------------------------------------------------- 10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) - ---------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 21.8% - ---------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) CO, IA - ---------------------------------------------------------------- CUSIP No. 717133102 Page 3 of 7 Pages - ---------------------------------------------------------------- 1 NAME OF REPORTING PERSONS IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) William Leland Edwards - ---------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a)/ X / (b)/ / - ---------------------------------------------------------------- 3 SEC USE ONLY - ---------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - ---------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 53,800 BENEFICIALLY --------------------------------------- OWNED BY 6 SHARED VOTING POWER EACH 1,264,100 REPORTING --------------------------------------- PERSON 7 SOLE DISPOSITIVE POWER WITH 53,800 --------------------------------------- 8 SHARED DISPOSITIVE POWER 1,264,100 - ---------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,317,900 - ---------------------------------------------------------------- 10 CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (See Instructions) - ---------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 22.8% - ---------------------------------------------------------------- 12 TYPE OF REPORTING PERSON (See Instructions) IN - ---------------------------------------------------------------- CUSIP No. 717133102 13G Page 4 of 7 Pages ITEM 1. (a) The name of the issuer is PharmChem Laboratories, Inc. (the "Issuer"). (b) The principal executive office of the Issuer is located at 1505A O'Brien Drive, Menlo Park, CA 94025. ITEM 2. (a) The name(s) of the person(s) filing this statement are Palo Alto Investors ("PAI") and William Leland Edwards ("Edwards") (collectively, the "Filers"). (b) The principal business office of the Filers is located at 470 University Avenue, Palo Alto, CA 94301. (c) See Item 4 of the cover sheet for each Filer. (d) This statement relates to shares of common stock of the Issuer (the "Stock"). (e) The CUSIP number of the Stock is 717133102. CUSIP No. 717133102 Page 5 of 7 Pages ITEM 3. If this statement is filed pursuant to rule 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: (a) ___ Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o). (b) ___ Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c). (c) ___ Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c). (d) ___ Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). (e) ___ An investment adviser in accordance with 240.13d- 1(b)(1)(ii)(E). (f) ___ An employee benefit plan or endowment fund in accordance with 240.13d-1(b)(1)(ii)(F). (g) ___ A parent holding company or control person in accordance with 240.13d-1(b)(1)(ii)(G) (h) ___ A savings association as defined in section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813). (i) ___ A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3). (j) ___XX Group, in accordance with section 240.13d-1(b)(1)(ii)(J) CUSIP No. 717133102 13G Page 6 of 7 Pages ITEM 4. OWNERSHIP See Items 5-9 and 11 on the cover sheet for each Filer. ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following /___/. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON PAI is a registered investment adviser whose clients have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Stock. No single client, other than Banner Partners, a California limited partnership, and Micro Cap Partners, L.P., a Delaware limited partnership, holds more than 5% of the outstanding Stock. Each of Banner Partners and Micro Cap Partners, L.P. has filed a Schedule 13G reflecting its holdings of the Stock. ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY Not applicable. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP PAI is a registered investment adviser. Edwards is PAI's controlling shareholder. ITEM 9. NOTICE OF DISSOLUTION OF GROUP Not applicable. ITEM 10. CERTIFICATION By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. CUSIP No. 717133102 13G Page 7 of 7 Pages 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: February 10, 2000 PALO ALTO INVESTORS By: /s/ William L. Edwards William L. Edwards, President /s/ William L. Edwards William Leland Edwards CSR/4325/002/1086102 -----END PRIVACY-ENHANCED MESSAGE-----