Condensed Consolidating Financial Information as of June 30, 2018



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	258	$	40	$	184	$	—		$	482
Accounts receivable, net	4,963		5,488		666		(9,856		)	1,261
Inventories	—		651		254		—			905
Prepaid expenses and other current assets	158		39		23		(174		)	46
Total current assets	5,379		6,218		1,127		(10,030		)	2,694
Property, plant and equipment, net	—		4,466		2,002		—			6,468
Goodwill	—		855		151		—			1,006
Customer relationships, net	—		447		122		—			569
Other intangible assets, net	—		81		68		—			149
Other assets, net	11,188		800		1,312		(12,840		)	460
Total assets	$	16,567	$	12,867	$	4,782	$	(22,870	)	$	11,346
Current liabilities
Accounts payable	$	8,356	$	1,675	$	231	$	(9,680	)	$	582
Accrued liabilities	183		514		255		(348		)	604
Total current liabilities	8,539		2,189		486		(10,028		)	1,186
Long-term debt, net	2,656		4,161		224		(4,375		)	2,666
Deferred income taxes	—		1,072		94		(13		)	1,153
Pension and other liabilities	10		336		149		—			495
Total liabilities	11,205		7,758		953		(14,416		)	5,500
Total Westlake Chemical Corporation stockholders' equity	5,362		5,109		3,345		(8,454		)	5,362
Noncontrolling interests	—		—		484		—			484
Total equity	5,362		5,109		3,829		(8,454		)	5,846
Total liabilities and equity	$	16,567	$	12,867	$	4,782	$	(22,870	)	$	11,346

Condensed Consolidating Financial Information as of December 31, 2017



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	1,089	$	57	$	385	$	—		$	1,531
Accounts receivable, net	3,331		4,128		580		(7,038		)	1,001
Inventories	—		654		246		—			900
Prepaid expenses and other current assets	52		27		31		(79		)	31
Total current assets	4,472		4,866		1,242		(7,117		)	3,463
Property, plant and equipment, net	—		4,374		2,038		—			6,412
Goodwill	—		855		157		—			1,012
Customer relationships, net	—		479		137		—			616
Other intangible assets, net	—		88		73		—			161
Other assets, net	10,706		798		1,271		(12,363		)	412
Total assets	$	15,178	$	11,460	$	4,918	$	(19,480	)	$	12,076
Current liabilities
Accounts payable	$	6,367	$	864	$	224	$	(6,855	)	$	600
Accrued liabilities	189		484		246		(262		)	657
Current portion of long-term debt, net	710		—		—		—			710
Total current liabilities	7,266		1,348		470		(7,117		)	1,967
Long-term debt, net	3,034		4,242		220		(4,369		)	3,127
Deferred income taxes	—		1,026		92		(7		)	1,111
Pension and other liabilities	4		347		151		—			502
Total liabilities	10,304		6,963		933		(11,493		)	6,707
Total Westlake Chemical Corporation stockholders' equity	4,874		4,497		3,490		(7,987		)	4,874
Noncontrolling interests	—		—		495		—			495
Total equity	4,874		4,497		3,985		(7,987		)	5,369
Total liabilities and equity	$	15,178	$	11,460	$	4,918	$	(19,480	)	$	12,076

Condensed Consolidating Financial Information for the Three Months Ended June 30, 2018



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,826		$	878		$	(469	)	$	2,235
Cost of sales	—			1,465			680			(462		)	1,683
Gross profit	—			361			198			(7		)	552
Selling, general and administrative expenses	—			86			36			(7		)	115
Amortization of intangibles	—			19			6			—			25
Integration-related costs	—			8			—			—			8
Income from operations	—			248			156			—			404
Other income (expense)
Interest expense	(31		)	(52		)	(3		)	55			(31		)
Other income (expense), net	41			8			14			(55		)	8
Income (loss) before income taxes	10			204			167			—			381
Provision (benefit) for income taxes	2			71			20			—			93
Equity in net income of subsidiaries	270			—			—			(270		)	—
Net income	278			133			147			(270		)	288
Net income attributable to noncontrolling interests	—			—			10			—			10
Net income attributable to Westlake Chemical Corporation	$	278		$	133		$	137		$	(270	)	$	278
Comprehensive income attributable to Westlake Chemical Corporation	$	242		$	133		$	99		$	(232	)	$	242

Condensed Consolidating Financial Information for the Three Months Ended June 30, 2017



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			Non- Guarantor Subsidiaries		Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,597		$	804	$	(422	)	$	1,979
Cost of sales	—			1,350			640		(414		)	1,576
Gross profit	—			247			164		(8		)	403
Selling, general and administrative expenses	—			73			36		(8		)	101
Amortization of intangibles	—			23			7		—			30
Integration-related costs	—			8			—		—			8
Income from operations	—			143			121		—			264
Other income (expense)
Interest expense	(38		)	(46		)	—		45			(39		)
Other income (expense), net	37			6			4		(45		)	2
Income (loss) before income taxes	(1		)	103			125		—			227
Provision (benefit) for income taxes	4			52			12		—			68
Equity in net income of subsidiaries	158			—			—		(158		)	—
Net income	153			51			113		(158		)	159
Net income attributable to noncontrolling interests	—			—			6		—			6
Net income attributable to Westlake Chemical Corporation	$	153		$	51		$	107	$	(158	)	$	153
Comprehensive income attributable to Westlake Chemical Corporation	$	205		$	52		$	148	$	(200	)	$	205

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2018



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	3,572		$	1,717		$	(904	)	$	4,385
Cost of sales	—			2,870			1,312			(891		)	3,291
Gross profit	—			702			405			(13		)	1,094
Selling, general and administrative expenses	—			163			73			(13		)	223
Amortization of intangibles	—			38			13			—			51
Integration-related costs	—			15			—			—			15
Income from operations	—			486			319			—			805
Other income (expense)
Interest expense	(69		)	(100		)	(5		)	106			(68		)
Other income (expense), net	86			16			34			(106		)	30
Income (loss) before income taxes	17			402			348			—			767
Provision (benefit) for income taxes	4			134			44			—			182
Equity in net income of subsidiaries	552			—			—			(552		)	—
Net income	565			268			304			(552		)	585
Net income attributable to noncontrolling interests	—			—			20			—			20
Net income attributable to Westlake Chemical Corporation	$	565		$	268		$	284		$	(552	)	$	565
Comprehensive income attributable to Westlake Chemical Corporation	$	525		$	268		$	244		$	(512	)	$	525

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2017



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	3,177		$	1,540		$	(795	)	$	3,922
Cost of sales	—			2,712			1,222			(781		)	3,153
Gross profit	—			465			318			(14		)	769
Selling, general and administrative expenses	1			146			67			(14		)	200
Amortization of intangibles	—			42			13			—			55
Integration-related costs	—			16			—			—			16
Income from operations	(1		)	261			238			—			498
Other income (expense)
Interest expense	(76		)	(92		)	(1		)	90			(79		)
Other income (expense), net	74			9			16			(90		)	9
Income (loss) before income taxes	(3		)	178			253			—			428
Provision (benefit) for income taxes	(1		)	105			20			—			124
Equity in net income of subsidiaries	293			—			—			(293		)	—
Net income	291			73			233			(293		)	304
Net income attributable to noncontrolling interests	—			—			13			—			13
Net income attributable to Westlake Chemical Corporation	$	291		$	73		$	220		$	(293	)	$	291
Comprehensive income attributable to Westlake Chemical Corporation	$	359		$	73		$	259		$	(332	)	$	359

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2018



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income	$	565		$	268		$	304		$	(552	)	$	585
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	—			208			104			—			312
Deferred income taxes	1			40			4			—			45
Net changes in working capital and other	(533		)	(459		)	47			552			(393		)
Net cash provided by operating activities	33			57			459			—			549
Cash flows from investing activities
Additions to property, plant and equipment	—			(248		)	(64		)	—			(312		)
Additions to investments in unconsolidated subsidiaries	—			(35		)	(10		)	—			(45		)
Other	—			3			—			—			3
Net cash used for investing activities	—			(280		)	(74		)	—			(354		)
Cash flows from financing activities
Intercompany financing	347			(1		)	(346		)	—			—
Dividends paid	(54		)	—			—			—			(54		)
Distributions to noncontrolling interests	—			207			(236		)	—			(29		)
Proceeds from notes payable and drawdown of revolver	—			—			6			—			6
Redemption and repayment of notes payable	(1,165		)	—			(8		)	—			(1,173		)
Other	8			—			—			—			8
Net cash used for financing activities	(864		)	206			(584		)	—			(1,242		)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	—			—			(2		)	—			(2		)
Net decrease in cash, cash equivalents and restricted cash	(831		)	(17		)	(201		)	—			(1,049		)
Cash, cash equivalents and restricted cash at beginning of period	1,089			79			386			—			1,554
Cash, cash equivalents and restricted cash at end of period	$	258		$	62		$	185		$	—		$	505

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2017



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income	$	291		$	73		$	233		$	(293	)	$	304
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	—			194			101			—			295
Deferred income taxes	—			15			—			—			15
Net changes in working capital and other	(400		)	(26		)	(1		)	293			(134		)
Net cash provided by (used for) operating activities	(109		)	256			333			—			480
Cash flows from investing activities
Additions to property, plant and equipment	—			(199		)	(82		)	—			(281		)
Additions to investments in unconsolidated subsidiaries	—			(31		)	—			—			(31		)
Other	—			2			—			—			2
Net cash used for investing activities	—			(228		)	(82		)	—			(310		)
Cash flows from financing activities
Intercompany financing	242			(254		)	12			—			—
Dividends paid	(49		)	—			—			—			(49		)
Distributions to noncontrolling interests	—			189			(205		)	—			(16		)
Proceeds from notes payable and drawdown of revolver	175			—			3			—			178
Repayment of term loan	—			—			(150		)	—			(150		)
Repayment of revolver	(360		)	—			—			—			(360		)
Redemption and repayment of notes payable	—			(1		)	(4		)	—			(5		)
Other	1			—			—			—			1
Net cash used for financing activities	9			(66		)	(344		)	—			(401		)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	—			—			13			—			13
Net decrease in cash, cash equivalents and restricted cash	(100		)	(38		)	(80		)	—			(218		)
Cash, cash equivalents and restricted cash at beginning of period	147			78			421			—			646
Cash, cash equivalents and restricted cash at end of period	$	47		$	40		$	341		$	—		$	428