Westlake
Insider trading & Transactions

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Transaction Date Insider Security Shares Price per share Total value Source
Sale
CHAO DAVID TSUNG-HUNG director
 Common Stock 1,750 $129.08 $225,888
Sale
CHAO DAVID TSUNG-HUNG director
 Common Stock 1,750 $130 $227,500
Option
JANSSENS THOMAS J. officer: SVP, Ops - PEM & Corp ..
 Common Stock 4,020 $86.54 $347,883
Option
JANSSENS THOMAS J. officer: SVP, Ops - PEM & Corp ..
 Common Stock 6,507 $65.81 $428,245
Option
JANSSENS THOMAS J. officer: SVP, Ops - PEM & Corp ..
 Common Stock 4,337 $79.83 $346,223
Option
JANSSENS THOMAS J. officer: SVP, Ops - PEM & Corp ..
 Employee Option (right to buy) 14,864 $77.39 $1,150,370
Option
CHAO ALBERT director, officer: Executive Ch..
 Common Stock 45,298 $68.09 $3,084,341
Option
CHAO ALBERT director, officer: Executive Ch..
 Employee Option (right to buy) 45,298 $68.09 $3,084,341
Option
EDERINGTON L. BENJAMIN officer: EVP, PEM, GC and CAO
 Common Stock 2,938 N/A N/A
Option
EDERINGTON L. BENJAMIN officer: EVP, PEM, GC and CAO
 Restricted Stock Units 2,938 N/A N/A
Option
BENDER MARK STEVEN officer: EVP & CFO
 Common Stock 2,938 N/A N/A
Option
BENDER MARK STEVEN officer: EVP & CFO
 Restricted Stock Units 2,938 N/A N/A
Option
BUESINGER ROBERT F. officer: EVP, HIP, IT & Digital
 Common Stock 7,051 N/A N/A
Option
BUESINGER ROBERT F. officer: EVP, HIP, IT & Digital
 Restricted Stock Units 7,051 N/A N/A
Option
SABAT CAROLYN CHAO director
 Common Stock 1,136 N/A N/A
Option
SABAT CAROLYN CHAO director
 Restricted Stock Units 1,136 N/A N/A
Option
CHAO CATHERINE T. director
 Common Stock 1,136 N/A N/A
Option
CHAO CATHERINE T. director
 Restricted Stock Units 1,136 N/A N/A
Option
SHEETS JEFFREY WAYNE director
 Common Stock 1,136 N/A N/A
Option
SHEETS JEFFREY WAYNE director
 Restricted Stock Units 1,136 N/A N/A
Option
NORTHCUTT R BRUCE director
 Common Stock 1,136 N/A N/A
Option
NORTHCUTT R BRUCE director
 Restricted Stock Units 1,136 N/A N/A
Option
LUBEL KIMBERLY S director
 Common Stock 1,136 N/A N/A
Option
LUBEL KIMBERLY S director
 Restricted Stock Units 1,136 N/A N/A
Option
MCCOLLUM MARK A director
 Common Stock 1,136 N/A N/A
Option
MCCOLLUM MARK A director
 Restricted Stock Units 1,136 N/A N/A
Option
HAAS MARIUS director
 Common Stock 1,136 N/A N/A
Option
HAAS MARIUS director
 Restricted Stock Units 1,136 N/A N/A
Option
GRAFF MICHAEL J director
 Common Stock 1,136 N/A N/A
Option
GRAFF MICHAEL J director
 Restricted Stock Units 1,136 N/A N/A
Option
CHAO DAVID TSUNG-HUNG director
 Common Stock 1,136 N/A N/A
Option
CHAO DAVID TSUNG-HUNG director
 Restricted Stock Units 1,136 N/A N/A
Option
SABAT CAROLYN CHAO director
 Common Stock 1,316 N/A N/A
Option
SABAT CAROLYN CHAO director
 Restricted Stock Units 1,316 N/A N/A
Option
CHAO CATHERINE T. director
 Common Stock 1,316 N/A N/A
Option
CHAO CATHERINE T. director
 Restricted Stock Units 1,316 N/A N/A
Option
BUESINGER ROBERT F. officer: EVP, HIP, IT & Digital
 Common Stock 3,133 $122.65 $384,262
Option
BUESINGER ROBERT F. officer: EVP, HIP, IT & Digital
 Employee Option (right to buy) 3,133 $122.65 $384,262
Sale
BENDER MARK STEVEN officer: EVP & CFO
 Common Stock 4,950 $152.19 $753,341
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Common Stock 68 $122.65 $8,340
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Common Stock 296 $108.12 $32,003
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Common Stock 293 $86.54 $25,356
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Employee Option (right to buy) 68 $122.65 $8,340
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Employee Option (right to buy) 296 $108.12 $32,003
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Employee Option (right to buy) 293 $86.54 $25,356
Sale
BUESINGER ROBERT F. officer: EVP, HIP, IT & Digital
 Common Stock 3,878 $144.5 $560,371
Sale
BUESINGER ROBERT F. officer: EVP, HIP, IT & Digital
 Common Stock 122 $144.5 $17,629
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Common Stock 649 $122.65 $79,600
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Common Stock 1,408 $108.12 $152,230
Option
ZOELLER JOHNATHAN STEVAN officer: VP and CAO
 Common Stock 719 $86.54 $62,221

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Insider trading

Monitoring trades made by the management members or major shareholders of companies may help create a sharper picture of what is happening inside the companies. Base your decisions on buys or sells of the people involved and do the right thing at the right time.

Who is insider?

Every director or senior officer, as well as any other entity or individual owning more than 10% of the company’s shares on the stock market, is called an insider. Such people or entities are allowed to buy/sell the company's shares under strictly controlled conditions. Key premise here is that none of them can make trades based on non-public information about the company.

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