-----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, TKZY1v73IsQANHW1Rxw0hXvO9HGhMdCSslwm/HQL0VSG5fvRzS2y+qRGJgD89vrG tp6tFP7iCWz8lPcZxjs6TA== 0001144204-08-025658.txt : 20080501 0001144204-08-025658.hdr.sgml : 20080501 20080501215257 ACCESSION NUMBER: 0001144204-08-025658 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20080429 FILED AS OF DATE: 20080501 DATE AS OF CHANGE: 20080501 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: NORTH AMERICAN SCIENTIFIC INC CENTRAL INDEX KEY: 0000949876 STANDARD INDUSTRIAL CLASSIFICATION: ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845] IRS NUMBER: 510366422 FISCAL YEAR END: 1031 BUSINESS ADDRESS: STREET 1: 20200 SUNBURST ST CITY: CHATSWORTH STATE: CA ZIP: 91311 BUSINESS PHONE: 8187348600 MAIL ADDRESS: STREET 1: 20200 SUNBURST ST CITY: CHATSWORTH STATE: CA ZIP: 91311 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Barring Troy A. CENTRAL INDEX KEY: 0001411804 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-26670 FILM NUMBER: 08796492 BUSINESS ADDRESS: BUSINESS PHONE: 818-734-8600 MAIL ADDRESS: STREET 1: 20200 SUNBURST STREET CITY: CHATSWORTH STATE: CA ZIP: 91311 4 1 v112556_ex.xml X0202 4 2008-04-29 0 0000949876 NORTH AMERICAN SCIENTIFIC INC NASM 0001411804 Barring Troy A. 20200 SUNBURST STREET CHATSWORTH CA 91311 0 1 0 0 Sr. Vice President and COO STOCK OPTION 0.41 2008-04-29 4 A 0 539428 0.00 A 2008-09-04 2015-04-29 Common Stock 539428 539428 D STOCK OPTION 0.94 2008-04-29 4 D 0 499470 D 2008-09-04 2014-09-04 Common Stock 499470 0 D The stock option vests as to one-quarter of the underlying securities as of September 4, 2008. The remaining options vest in equal installments monthly thereafter for the next three years. In exchange for a new option to purchase 539,428 shares of common stock having an exercise price of $0.41, the reporting person agreed to cancellation of options granted to him on September 4, 2007. All numbers shown are as of the transaction date without giving effect to the 1-for-5 reverse stock split effective on May 1, 2008. /s/ Bruce Feucther under Power of Attorney for Troy A. Barring 2008-04-30 EX-24.1 2 v112556_ex24-1.htm

The undersigned hereby constitutes and appoints each of John B. Rush, Bruce Feuchter and Jeffrey A. Estes, signing singly, the undersigned's true and lawful attorney-in-fact to:

(1) execute for and on behalf of the undersigned, Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended, and the rules thereunder;

(2) do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4 or 5 and timely file such form with the United States Securities and Exchange Commission and any stock exchange or similar authority; and

(3) take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the applicable issuer assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934, as amended.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 30th day of April, 2008.

/s/Troy A. Barring
Troy A. Barring