0001140361-16-053917.txt : 20160218 0001140361-16-053917.hdr.sgml : 20160218 20160218160553 ACCESSION NUMBER: 0001140361-16-053917 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20160215 FILED AS OF DATE: 20160218 DATE AS OF CHANGE: 20160218 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: WESTLAKE CHEMICAL CORP CENTRAL INDEX KEY: 0001262823 STANDARD INDUSTRIAL CLASSIFICATION: INDUSTRIAL ORGANIC CHEMICALS [2860] IRS NUMBER: 760346924 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 2801 POST OAK BLVD STREET 2: SUITE 600 CITY: HOUSTON STATE: TX ZIP: 77056 BUSINESS PHONE: 713-960-9111 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: Mattina Michael J. CENTRAL INDEX KEY: 0001638948 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-32260 FILM NUMBER: 161437600 MAIL ADDRESS: STREET 1: 2801 POST OAK BLVD. STREET 2: SUITE 600 CITY: HOUSTON STATE: TX ZIP: 77056 FORMER NAME: FORMER CONFORMED NAME: Mattina Mike DATE OF NAME CHANGE: 20150407 4 1 doc1.xml FORM 4 X0306 4 2016-02-15 0 0001262823 WESTLAKE CHEMICAL CORP WLK 0001638948 Mattina Michael J. 2801 POST OAK BLVD HOUSTON TX 77056 0 1 0 0 Sr. VP, Polyethylene Common Stock 2016-02-15 4 M 0 892 A 8802 D Common Stock 2016-02-17 4 F 0 296 43.52 D 8506 D Restricted Stock Units 2016-02-15 4 M 0 892 0 D Common Stock 892 0 D Restricted stock units convert into Issuer's common stock on a one-for-one basis. On February 15, 2013, the reporting person was granted 892 restricted stock units vesting on the third anniversary of the grant date. Michael J. Mattina by J. Iglesias POA 2016-02-18