X0202 4 2006-05-25 0 0001022505 NATIONAL SCIENTIFIC CORP/AZ NSCT 0001213297 CLARK GRAHAM L 14505 N. HAYDEN ROAD, SUITE 305 SCOTTSDALE AZ 85260-6951 1 1 0 0 President NSCT Common Stock 2006-05-25 4 A 0 1150000 0.035 A 3455000 D A private acquisition at closing market price of 1,150,000 restricted shares of the Company's common stock related to compensation for the Reporting Person's services, specifically back pay salary conversion, and subject to substantial risk of forfeiture if Company fails to meet key objectives. Additional compensation and back pay disclosure details are contained in the Company's 2005 10-KSB and related filings with the SEC. Graham L. Clark 2006-05-25