0001437749-18-011313.txt : 20180605 0001437749-18-011313.hdr.sgml : 20180605 20180605203048 ACCESSION NUMBER: 0001437749-18-011313 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180601 FILED AS OF DATE: 20180605 DATE AS OF CHANGE: 20180605 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: WALKER GREGORY C CENTRAL INDEX KEY: 0001227568 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-31311 FILM NUMBER: 18882750 MAIL ADDRESS: STREET 1: 2 RESULTS WAY CITY: CUPERTINO STATE: CA ZIP: 95014 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: PDF SOLUTIONS INC CENTRAL INDEX KEY: 0001120914 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-COMPUTER PROGRAMMING SERVICES [7371] IRS NUMBER: 251701361 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 333 WEST SAN CARLOS STREET STREET 2: SUITE 700 CITY: SAN JOSE STATE: CA ZIP: 95110 BUSINESS PHONE: 4082807900 MAIL ADDRESS: STREET 1: 333 WEST SAN JOSE STREET STREET 2: SUITE 700 CITY: SAN JOSE STATE: CA ZIP: 95110 4 1 rdgdoc.xml FORM 4 X0306 4 2018-06-01 0001120914 PDF SOLUTIONS INC PDFS 0001227568 WALKER GREGORY C 333 W. SAN CARLOS ST. SUITE 1000 SAN JOSE CA 95110 1 CFO, VP Finance Common Stock 2018-06-01 4 F 0 1330 13.07 D 21875 D This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of Restricted Stock rights. This is not a sale of shares in the market. 2. Includes 1,498 shares of common stock that were purchased on January 31, 2018 under the PDF Employee Stock Purchase Plan /s/ Gregory C. Walker 2018-06-05