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    Westlake Chemical Corp. (WLK)

    -NYSE
    77.05 Up 1.08(1.42%) Apr 24, 4:05PM EDT
    |After Hours : 77.04 Down 0.01 (0.01%) Apr 24, 4:16PM EDT
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    Insider TransactionsGet Insider Transactions for:
    Net Share Purchase Activity
    Insider Purchases - Last 6 Months
     SharesTrans
    PurchasesN/A0
    Sales117,7564
    Net Shares Purchased
    (Sold)
    (117,756)4
    Total Insider Shares Held91.67KN/A
    % Net Shares Purchased
    (Sold)
    (56%)N/A
    Net Institutional Purchases - Prior Qtr to Latest Qtr
     Shares
    Net Shares Purchased
    (Sold)
    (3,251,930)
    % Change in Institutional Shares Held(9.15%)
    Data provided by Thomson Financial


    Insider Transactions Reported - Last Two Years
    DateInsiderSharesTypeTransactionValue*
    Apr 1, 2015MATTINA MICHAEL J.Officer7,910DirectStatement of OwnershipN/A
    Feb 18, 2015CHAO ALBERTOfficer7,821DirectDisposition (Non Open Market) at $66.79 per share.522,364
    Feb 18, 2015TAYLOR JEFFREY LOfficer1,037DirectDisposition (Non Open Market) at $66.79 per share.69,261
    Feb 18, 2015KENNER ANDREWOfficer1,017DirectDisposition (Non Open Market) at $66.79 per share.67,925
    Feb 18, 2015HANSEN DAVID ROfficer1,073DirectDisposition (Non Open Market) at $66.79 per share.71,665
    Feb 18, 2015BUESINGER ROBERT F.Officer964DirectDisposition (Non Open Market) at $66.79 per share.64,385
    Feb 18, 2015MANGIERI GEORGE JOfficer681DirectDisposition (Non Open Market) at $66.79 per share.45,483
    Feb 18, 2015TEEL LAWRENCE E.Officer342DirectDisposition (Non Open Market) at $66.79 per share.22,842
    Feb 18, 2015BENDER MARK STEVENOfficer1,823DirectDisposition (Non Open Market) at $66.79 per share.121,758
    Aug 25, 2014CHAO JAMESDirector30,559DirectSale at $95 per share.2,903,105
    Aug 25, 2014CHAO JAMESDirector30,559DirectOption Exercise at $22.92 per share.700,412
    Aug 23, 2014NORTHCUTT R BRUCEDirector586DirectOption Exercise N/A
    Aug 23, 2014BLAKELY ROBERT TDirector586DirectOption Exercise N/A
    Aug 23, 2014LUKENS MAX LDirector586DirectOption Exercise N/A
    Aug 23, 2014GRAFF MICHAEL JDirector586DirectOption Exercise N/A
    Aug 23, 2014RILEY H JOHN JRDirector586DirectOption Exercise N/A
    Aug 23, 2014JENKINS DOROTHY CDirector586DirectOption Exercise N/A
    Aug 22, 2014CHAO JAMESDirector42,379DirectOption Exercise at $10.26 - $22.92 per share.N/A
    Aug 22, 2014CHAO JAMESDirector42,379DirectSale at $93.57 per share.3,965,403
    Jun 9, 2014CHAO JAMESOfficer42,946DirectOption Exercise at $30.05 - $45.7 per share.N/A
    Jun 9, 2014CHAO JAMESOfficer42,946DirectSale at $82.01 per share.3,522,001
    Jun 3, 2014JENKINS DOROTHY CDirector5,518DirectOption Exercise at $7.25 per share.40,005
    May 7, 2014BUESINGER ROBERT F.Officer1,872DirectSale at $77.36 per share.144,817
    May 7, 2014BUESINGER ROBERT F.Officer1,872DirectOption Exercise at $45.70 per share.85,550
    Mar 13, 2014BLAKELY ROBERT TDirector1,609DirectSale at $135.03 per share.217,263
    Mar 3, 2014BENDER MARK STEVENOfficer17,721DirectOption Exercise at $31.61 per share.560,160
    Mar 3, 2014BENDER MARK STEVENOfficer17,721DirectSale at $133.60 per share.2,367,525
    Feb 28, 2014RILEY H JOHN JRDirector7,375DirectSale at $134.70 per share.993,412
    Feb 28, 2014RILEY H JOHN JRDirector7,375DirectOption Exercise at $20.83 - $24.51 per share.167,0002
    Feb 28, 2014HANSEN DAVID ROfficer4,232DirectSale at $134.50 per share.569,204
    Feb 28, 2014TEEL LAWRENCE E.Officer1,107DirectSale at $134.70 per share.149,112
    Feb 28, 2014HANSEN DAVID ROfficer4,232DirectOption Exercise at $60.11 - $91.4 per share.N/A
    Feb 28, 2014TEEL LAWRENCE E.Officer1,014DirectOption Exercise at $45.83 - $91.4 per share.N/A
    Feb 27, 2014TAYLOR JEFFREY LOfficer3,856DirectOption Exercise at $45.83 - $91.4 per share.N/A
    Feb 27, 2014TAYLOR JEFFREY LOfficer4,314DirectSale at $132.62 per share.572,122
    Feb 26, 2014BUESINGER ROBERT F.Officer2,361DirectSale at $132.95 per share.313,894
    Feb 26, 2014MANGIERI GEORGE JOfficer354DirectSale at $133.01 per share.47,085
    Feb 26, 2014BUESINGER ROBERT F.Officer2,361DirectOption Exercise at $45.83 - $60.11 per share.N/A
    Feb 24, 2014MANGIERI GEORGE JOfficer2,985DirectOption Exercise at $45.83 - $60.11 per share.N/A
    Feb 24, 2014MANGIERI GEORGE JOfficer2,985DirectSale at $132.27 - $132.28 per share.395,0002
    Feb 19, 2014HANSEN DAVID ROfficer712DirectDisposition (Non Open Market) at $129 - $129.58 per share.92,0002
    Feb 19, 2014BENDER MARK STEVENOfficer1,190DirectDisposition (Non Open Market) at $129 - $129.58 per share.154,0002
    Feb 19, 2014TEEL LAWRENCE E.Officer93DirectDisposition (Non Open Market) at $129 per share.11,997
    Feb 19, 2014KENNER ANDREWOfficer696DirectDisposition (Non Open Market) at $129 - $129.58 per share.90,0002
    Feb 19, 2014TAYLOR JEFFREY LOfficer713DirectDisposition (Non Open Market) at $129 - $129.58 per share.92,0002
    Feb 19, 2014BUESINGER ROBERT F.Officer342DirectDisposition (Non Open Market) at $129 - $129.58 per share.44,0002
    Feb 19, 2014CHAO JAMESOfficer3,680DirectDisposition (Non Open Market) at $129 - $129.58 per share.476,0002
    Feb 19, 2014MANGIERI GEORGE JOfficer565DirectDisposition (Non Open Market) at $129 - $129.58 per share.73,0002
    Feb 19, 2014CHAO ALBERTOfficer4,904DirectDisposition (Non Open Market) at $129 - $129.58 per share.634,0002
    Dec 30, 2013CHAO JAMESOfficer9,632DirectDisposition (Non Open Market) at $0 per share.N/A
    Dec 27, 2013CHAO JAMESOfficer1,000DirectDisposition (Non Open Market) at $0 per share.N/A
    Dec 26, 2013CHAO JAMESOfficer500DirectDisposition (Non Open Market) at $0 per share.N/A
    Dec 16, 2013CHAO JAMESOfficer1,000DirectDisposition (Non Open Market) at $0 per share.N/A
    Nov 25, 2013BLAKELY ROBERT TDirector2,534DirectSale at $112.21 per share.284,340
    Nov 11, 2013LUKENS MAX LDirector888DirectOption Exercise at $24.51 per share.21,764
    Nov 11, 2013LUKENS MAX LDirector888DirectSale at $113.37 - $113.39 per share.101,0002
    Aug 12, 2013BENDER MARK STEVENOfficer2,930DirectSale at $101 per share.295,930
    Aug 8, 2013BENDER MARK STEVENOfficer3,000DirectSale at $101 per share.303,000
    Aug 1, 2013MANGIERI GEORGE JOfficer2,025DirectOption Exercise at $45.83 per share.92,805
    Aug 1, 2013LUKENS MAX LOfficer12,786DirectOption Exercise at $20.53 - $60.11 per share.N/A
    Aug 1, 2013LUKENS MAX LOfficer12,786DirectSale at $105.71 per share.1,351,608
    Aug 1, 2013WALLACE STEPHENOfficer12,786DirectOption Exercise at $20.53 - $60.11 per share.N/A
    Aug 1, 2013MANGIERI GEORGE JOfficer2,025DirectSale at $104.67 per share.211,956
    Aug 1, 2013WALLACE STEPHENOfficer12,786DirectSale at $105.71 per share.1,351,608
    May 28, 2013KENNER ANDREWOfficer5,679DirectOption Exercise at $20.53 - $60.11 per share.N/A
    May 28, 2013KENNER ANDREWOfficer9,607DirectSale at $94.13 per share.904,306
    May 21, 2013WALLACE STEPHENOfficer9,092DirectOption Exercise at $19.29 per share.175,384
    May 21, 2013WALLACE STEPHENOfficer9,092DirectSale at $94.02 per share.854,829
    May 21, 2013MANGIERI GEORGE JOfficer1,001DirectSale at $94.50 per share.94,594
    May 8, 2013BUESINGER ROBERT F.Officer1,478DirectOption Exercise at $27.24 per share.40,260
    May 8, 2013WALLACE STEPHENOfficer13,857DirectOption Exercise at $27.22 - $31.61 per share.408,0002
    May 8, 2013WALLACE STEPHENOfficer13,857DirectSale at $89.80 per share.1,244,358
    May 8, 2013BUESINGER ROBERT F.Officer1,478DirectSale at $90.97 per share.134,453
    Data provided by EDGAR Online
    * = Where indicated, some values are estimates.
    1= Potential proceeds estimated by the filer.
    2= Estimated based on the average of multiple prices reported.
    3= Multiple dates reported. Most recent date shown.

    Currency in USD.



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