Westlake Chemical Announces First Quarter 2018 Conference Call Information

HOUSTON–(BUSINESS WIRE)–Westlake Chemical Corporation (NYSE: WLK) will release its first quarter
2018 earnings prior to the market opening on Thursday, May 3, 2018. The
company will host a conference call at 11:00 a.m. Eastern Time (10:00
a.m. Central Time) on the same day to discuss the earnings release.

To access the conference call, dial (855) 760-8160, or (704) 288-0624 for
international callers, approximately 10 minutes prior to the scheduled
start time and reference passcode 7684638.

The conference call will also be available via webcast at https://edge.media-server.com/m6/p/5ctk3hq6
and the earnings release can be obtained via the company’s Web page at https://www.westlake.com/investor-relations.

This call will be available for replay beginning at 1:00 p.m. Eastern
Time and may be accessed until 11:59 p.m. Eastern Time on May 10, 2018.
The replay can be accessed by calling the following numbers: domestic
callers should dial (855) 859-2056 and international callers may access
the replay at (404) 537-3406. The access code at both numbers is 7684638.

About Westlake Chemical:

Westlake Chemical Corporation is an international manufacturer and
supplier of petrochemicals, polymers and building products with
headquarters in Houston. The company's range of products includes:
ethylene, polyethylene, styrene, propylene, chlor-alkali and derivative
products, PVC suspension and specialty resins, PVC Compounds, and PVC
building products including siding, pipe, fittings and specialty
components, windows, fence, deck and film. For more information, visit
the company's Web site at www.westlake.com.

Contacts

Westlake Chemical Corporation
Media Relations
L.
Ben Ederington, 713.960.9111
or
Investor Relations
Steve
Bender, 713.960.9111