0001140361-11-026691.txt : 20110511 0001140361-11-026691.hdr.sgml : 20110511 20110511162415 ACCESSION NUMBER: 0001140361-11-026691 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20110509 FILED AS OF DATE: 20110511 DATE AS OF CHANGE: 20110511 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: WESTLAKE CHEMICAL CORP CENTRAL INDEX KEY: 0001262823 STANDARD INDUSTRIAL CLASSIFICATION: INDUSTRIAL ORGANIC CHEMICALS [2860] IRS NUMBER: 760346924 MAIL ADDRESS: STREET 1: 2801 POST OAK BLVD STREET 2: SUITE 600 CITY: HOUSTON STATE: TX ZIP: 77056 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Mangieri George J CENTRAL INDEX KEY: 0001298504 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-32260 FILM NUMBER: 11832218 MAIL ADDRESS: STREET 1: 2801 POST OAK BLVD., SUITE 600 CITY: HOUSTON STATE: TX ZIP: 77056 4 1 doc1.xml FORM 4 X0303 4 2011-05-09 0 0001262823 WESTLAKE CHEMICAL CORP WLK 0001298504 Mangieri George J 2801 POST OAK BLVD. HOUSTON TX 77056 0 1 0 0 VP & Chief Accounting Officer Common Stock 2011-05-09 4 M 0 7489 19.29 A 33244 D Common Stock 2010-05-09 4 S 0 7489 60.25 D 25755 D Employee Option (right to buy) 19.29 2011-05-09 4 M 0 7489 0 A 2011-02-15 2021-02-15 Common Stock 7489 0 D George J. Mangieri by Richard Kroger PoA 2011-05-10