-----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, BdTli3eHHOY334YhsLn+nTStSSCiMKJZg88NL7FX11NxbqQhVcIyI0p9jNKdFsHN G580MMYhBbWh4wUhJCR5TQ== 0001005477-00-001320.txt : 20000215 0001005477-00-001320.hdr.sgml : 20000215 ACCESSION NUMBER: 0001005477-00-001320 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20000214 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: BIO LOGIC SYSTEMS CORP CENTRAL INDEX KEY: 0000355007 STANDARD INDUSTRIAL CLASSIFICATION: ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845] IRS NUMBER: 363025678 STATE OF INCORPORATION: DE FISCAL YEAR END: 0228 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: SEC FILE NUMBER: 005-35477 FILM NUMBER: 543160 BUSINESS ADDRESS: STREET 1: ONE BIO LOGIC PLZ CITY: MUNDELEIN STATE: IL ZIP: 60060 BUSINESS PHONE: 7089495200 MAIL ADDRESS: STREET 1: ONE BIO LOGIC PLAZA CITY: MUNDELEIN STATE: IL ZIP: 60060 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: WEINGARTEN CHARLES Z MD CENTRAL INDEX KEY: 0000902240 STANDARD INDUSTRIAL CLASSIFICATION: [] FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 3633 WEST LAKE AVE CITY: GLENVIEW STATE: IL ZIP: 60025 BUSINESS PHONE: 7087299122 MAIL ADDRESS: STREET 1: 3633 WEST LAKE AVE CITY: GLENVIEW STATE: IL ZIP: 60025 FORMER COMPANY: FORMER CONFORMED NAME: WEINGARTEN CHARLES Z DATE OF NAME CHANGE: 19930426 SC 13G/A 1 AMENDMENT NO. 10 TO SCHEDULE 13G SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ---------- SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 10)(1) Bio-Logic Systems Corp. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, $.01 par value - -------------------------------------------------------------------------------- (Title of Class of Securities) 090909 10 2 - -------------------------------------------------------------------------------- (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: |_| Rule 13d-1 (b) |_| Rule 13d-1 (c) |_| Rule 13d-1 (d) - ---------- (1) 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). (Continued on following page(s)) Page 1 of 4 Pages CUSIP No. 090909 10 2 SCHEDULE 13G Page 2 of 4 Pages - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Charles Z. Weingarten, M.D. - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |_| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION United States - -------------------------------------------------------------------------------- 5 SOLE VOTING POWER 241,101 -------------------------------------------------------------- NUMBER OF 6 SHARED VOTING POWER SHARES BENEFICIALLY -0- OWNED BY -------------------------------------------------------------- EACH 7 SOLE DISPOSITIVE POWER REPORTING PERSON 241,101 WITH -------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER -0- - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 241,101 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* |_| - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.0% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 090909 10 2 SCHEDULE 13G Page 3 of 4 Pages Item 1(a). Name of Issuer: Bio-Logic Systems Corp. Item 1(b). Address of Issuer's Principal Executive Offices: One Bio-Logic Plaza, Mundelein, IL 60060 Item 2(a). Name of Person Filing: See Item 1 on page 2 Item 2(b). Address of Principal Business Office or if none, Residence: See item 1(b) above Item 2(c). Citizenship: See item 4 on page 2 Item 2(d). Title of Class of Securities: Common Stock, $.01 par value Item 2(e). CUSIP Number: 090909 10 2 Item 3. Not Applicable Item 4. Ownership: (a) Amount Beneficially Owned: As of December 31, 1999, Dr. Weingarten beneficially owned 241,101 shares of the issuer's Common Stock, which includes 12,500 shares underlying options exercisable within 60 days. Does not include (i) 9,000 shares owned by his children, as to which he disclaims beneficial ownership; (ii) 40,000 shares owned by a corporation of which he has 22% voting power or (iii) shares underlying options which are not exercisable within 60 days. (b) Percent of Class: 6.0% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 241,101 (ii) shared power to vote or to direct the vote: -0- (iii) sole power to dispose or to direct the disposition of: 241,101 (iv) shared power to dispose or to direct the disposition of: -0- Item 5. Ownership of Five Percent or Less of a Class: Not Applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person: Not Applicable Item 7. Identification and Classification of Subsidiary Which Acquired the Securities: Not Applicable Item 8. Identification and Classification of Members of the Group: Not Applicable CUSIP No. 090909 10 2 SCHEDULE 13G Page 4 of 4 Pages Item 9. Notice of Dissolution of Group Not Applicable Item 10. Certification: Not Applicable 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. February 11, 2000 By: /s/ Charles Z. Weingarten ------------------------------- Charles Z. Weingarten, M.D. -----END PRIVACY-ENHANCED MESSAGE-----