-----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, L3ZGDjOE7iCKbQXhuL8kIpA2bWbBZy6hd9qXWn8T2lIFFCuxwAn/MdyOwrHSFQxI LuMYmnXr/2Eo4tAwmW2yvA== 0000912057-00-001612.txt : 20000202 0000912057-00-001612.hdr.sgml : 20000202 ACCESSION NUMBER: 0000912057-00-001612 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20000119 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: NORTH AMERICAN SCIENTIFIC INC CENTRAL INDEX KEY: 0000949876 STANDARD INDUSTRIAL CLASSIFICATION: IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835] IRS NUMBER: 510366422 STATE OF INCORPORATION: DE FISCAL YEAR END: 1031 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: SEC FILE NUMBER: 005-49267 FILM NUMBER: 509319 BUSINESS ADDRESS: STREET 1: 7435 GREENBUSH AVE CITY: NORTH HOLLYWOOD STATE: CA ZIP: 91605 BUSINESS PHONE: 8185039201 MAIL ADDRESS: STREET 1: 7435 GREENBUSH AVE CITY: NORTH HOLLYWOOD STATE: CA ZIP: 91605 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: GRUVERMAN IRWIN J/ CENTRAL INDEX KEY: 0000922856 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 30 OSSIPEE RD CITY: NEWTON STATE: MA ZIP: 02164 MAIL ADDRESS: STREET 1: 30 OSSIPEE RD CITY: NEWTON STATE: MA ZIP: 02164 SC 13G/A 1 SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 4)* NORTH AMERICAN SCIENTIFIC, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 65715D100 (CUSIP Number) *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 the disclosures provided in a prior cover page. The information required in 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). Page 1 of 4 pages SCHEDULE 13G - ------------------------------ ------------------------------- CUSIP No. 65715D100 Page 2 of 4 Pages - ------------------------------ ------------------------------- - ------------------------------------------------------------------------------ 1 NAME OF REPORTING PERSON S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Irwin J. Gruverman - ------------------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - ------------------------------------------------------------------------------ 3 SEC USE ONLY - ------------------------------------------------------------------------------ 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. - ------------------------------------------------------------------------------ 5 SOLE VOTING POWER 460,600* NUMBER OF ------------------------------------------------------------- SHARES 6 SHARED VOTING POWER BENEFICIALLY 0 OWNED BY ------------------------------------------------------------- EACH 7 SOLE DISPOSITIVE POWER REPORTING 460,600* PERSON ------------------------------------------------------------- WITH 8 SHARED DISPOSITIVE POWER 0 - ------------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 460,600* - ------------------------------------------------------------------------------ 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* /X/ - ------------------------------------------------------------------------------ 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.8% - ------------------------------------------------------------------------------ 12 TYPE OF REPORTING PERSON* IN - ------------------------------------------------------------------------------ * Includes 36,000 shares held in a fund of which the reporting person is the sole general partner, and 25,000 shares subject to outstanding options which are currently exercisable. Excludes 30,000 shares owned by reporting person's spouse, as to which reporting person disclaims beneficial ownership. ITEM 1 (a) Name of Issuer: North American Scientific, Inc. ITEM 1 (b) Address of Issuer's Principal Executive Offices: 20200 Sunburst Street Chatsworth, CA 91311 ITEM 2 (a) Name of Person Filing: Irwin J. Gruverman ITEM 2 (b) Address of Principal Business Office: 30 Ossipee Road Newton, MA 02464 ITEM 2 (c) Citizenship: United States ITEM 2 (d) Title of Class of Securities: Common Stock, $0.01 par value ITEM 2 (e) CUSIP Number: 65715D100 ITEM 3 Not Applicable. ITEM 4 Ownership: The following information is provided as of December 31, 1999: (a) Amount Beneficially Owned: 460,600* (b) Percent of Class: 6.8% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 460,600* (ii) shared power to vote or to direct the vote: 0 (iii) sole power to dispose or to direct the disposition of: 460,600* (iv) shared power to dispose or to direct the disposition of: 0 * Includes 36,000 shares held in a fund of which the reporting person is the sole general partner, 25,000 shares subject to outstanding options which are immediately exercisable. Excludes 30,000 shares owned by reporting person's spouse, as to which reporting person disclaims beneficial ownership. Page 3 of 4 Pages 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 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: Not Applicable. ITEM 9 Notice of Dissolution of Group: Not Applicable. ITEM 10 Certification: Not Applicable. 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. Date: January 7, 2000 Signature: /s/ Irwin J. Gruverman --------------------------------- Name/Title: Irwin J. Gruverman Page 4 of 4 Pages -----END PRIVACY-ENHANCED MESSAGE-----