ndensed Consolidating Financial Information as of September 30, 2014



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	652,709	$	1,644	$	89,144	$	69,971	$	—		$	813,468
Accounts receivable, net	15,064		1,377,250		58,106		170,833		(1,028,289		)	592,964
Inventories	—		385,826		5,551		109,175		—			500,552
Prepaid expenses and other current assets	137		14,737		303		3,707		—			18,884
Deferred income taxes	342		25,446		—		292		—			26,080
Total current assets	668,252		1,804,903		153,104		353,978		(1,028,289		)	1,951,948
Property, plant and equipment, net	—		1,451,807		806,648		452,020		—			2,710,475
Equity investments	3,878,703		1,207,569		—		356,286		(5,371,730		)	70,828
Other assets, net	34,847		351,271		61,679		137,990		(192,755		)	393,032
Total assets	$	4,581,802	$	4,815,550	$	1,021,431	$	1,300,274	$	(6,592,774	)	$	5,126,283
Current liabilities
Accounts payable	$	979,414	$	157,562	$	29,856	$	100,129	$	(1,003,596	)	$	263,365
Accrued liabilities	15,448		238,225		3,412		77,279		(24,693		)	309,671
Total current liabilities	994,862		395,787		33,268		177,408		(1,028,289		)	573,036
Long-term debt	753,079		10,889		188,523		—		(188,523		)	763,968
Deferred income taxes	—		473,343		1,507		43,155		(4,232		)	513,773
Other liabilities	—		31,616		—		121,542		—			153,158
Total liabilities	1,747,941		911,635		223,298		342,105		(1,221,044		)	2,003,935
Total Westlake Chemical Corporation stockholders' equity	2,833,861		3,903,915		798,133		669,682		(5,371,730		)	2,833,861
Noncontrolling interests	—		—		—		288,487		—			288,487
Total equity	2,833,861		3,903,915		798,133		958,169		(5,371,730		)	3,122,348
Total liabilities and equity	$	4,581,802	$	4,815,550	$	1,021,431	$	1,300,274	$	(6,592,774	)	$	5,126,283

Condensed Consolidating Financial Information as of December 31, 2013



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	420,948	$	6,227	$	—	$	34,126	$	—		$	461,301
Marketable securities	239,388		—		—		—		—			239,388
Accounts receivable, net	3,879		666,344		71,812		2,755		(316,333		)	428,457
Inventories	—		339,929		116,377		15,573		—			471,879
Prepaid expenses and other current assets	778		11,055		257		1,798		—			13,888
Deferred income taxes	441		28,974		4,448		306		—			34,169
Total current assets	665,434		1,052,529		192,894		54,558		(316,333		)	1,649,082
Property, plant and equipment, net	—		1,318,119		762,972		6,923		—			2,088,014
Equity investments	2,815,752		636,461		10,411		31,518		(3,427,267		)	66,875
Other assets, net	15,393		423,901		75,197		1,199		(258,752		)	256,938
Total assets	$	3,496,579	$	3,431,010	$	1,041,474	$	94,198	$	(4,002,352	)	$	4,060,909
Current liabilities
Accounts payable	$	316,652	$	100,570	$	122,564	$	10,649	$	(300,822	)	$	249,613
Accrued liabilities	8,334		134,452		26,688		1,282		(15,511		)	155,245
Total current liabilities	324,986		235,022		149,252		11,931		(316,333		)	404,858
Long-term debt	752,990		10,889		252,973		—		(252,973		)	763,879
Deferred income taxes	—		260,171		182,855		729		(5,779		)	437,976
Other liabilities	—		34,571		962		60		—			35,593
Total equity	2,418,603		2,890,357		455,432		81,478		(3,427,267		)	2,418,603
Total liabilities and equity	$	3,496,579	$	3,431,010	$	1,041,474	$	94,198	$	(4,002,352	)	$	4,060,909

Condensed Consolidating Financial Information for the Three Months Ended September 30, 2014



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,026,282		$	392,008		$	208,313		$	(373,376	)	$	1,253,227
Cost of sales	—			831,675			227,015			202,110			(369,093		)	891,707
Gross profit	—			194,607			164,993			6,203			(4,283		)	361,520
Selling, general and administrative expenses	399			36,445			8,014			14,184			(4,283		)	54,759
(Loss) income from operations	(399		)	158,162			156,979			(7,981		)	—			306,761
Interest expense	(10,343		)	(2		)	(2,137		)	(39		)	3,035			(9,486		)
Other income (expense), net	2,138			(2,942		)	486			683			(3,035		)	(2,670		)
(Loss) income before income taxes	(8,604		)	155,218			155,328			(7,337		)	—			294,605
(Benefit from) provision for income taxes	(3,088		)	93,366			36,309			(2,138		)	—			124,449
Equity in net income of subsidiaries	173,273			113,157			—			5,862			(292,292		)	—
Net income (loss)	167,757			175,009			119,019			663			(292,292		)	170,156
Net income attributable to noncontrolling interests	—			—			—			2,399			—			2,399
Net income (loss) attributable to Westlake Chemical Corporation	$	167,757		$	175,009		$	119,019		$	(1,736	)	$	(292,292	)	$	167,757
Comprehensive income (loss) attributable to Westlake Chemical Corporation	$	131,456		$	175,137		$	119,019		$	(39,528	)	$	(254,628	)	$	131,456

Condensed Consolidating Financial Information for the Three Months Ended September 30, 2013



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	844,081		$	540,133		$	13,337		$	(393,386	)	$	1,004,165
Cost of sales	—			754,037			327,152			11,891			(393,386		)	699,694
Gross profit	—			90,044			212,981			1,446			—			304,471
Selling, general and administrative expenses	514			29,323			6,391			1,641			—			37,869
(Loss) income from operations	(514		)	60,721			206,590			(195		)	—			266,602
Interest expense	(3,292		)	(5		)	(2,295		)	—			2,295			(3,297		)
Other income (expense), net	3,585			(2,688		)	1,162			(51		)	(2,295		)	(287		)
(Loss) income before income taxes	(221		)	58,028			205,457			(246		)	—			263,018
(Benefit from) provision for income taxes	(70		)	19,973			72,876			(51		)	—			92,728
Equity in net income of subsidiaries	170,441			132,581			—			—			(303,022		)	—
Net income (loss) attributable to Westlake Chemical Corporation	$	170,290		$	170,636		$	132,581		$	(195	)	$	(303,022	)	$	170,290
Comprehensive income attributable to Westlake Chemical Corporation	$	171,095		$	170,764		$	132,581		$	351		$	(303,696	)	$	171,095

Condensed Consolidating Financial Information for the Nine Months Ended September 30, 2014



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	2,809,844		$	1,476,157		$	229,183		$	(1,235,705	)	$	3,279,479
Cost of sales	—			2,476,608			832,304			221,233			(1,205,167		)	2,324,978
Gross profit	—			333,236			643,853			7,950			(30,538		)	954,501
Selling, general and administrative expenses	1,474			123,050			21,957			16,954			(30,538		)	132,897
(Loss) income from operations	(1,474		)	210,186			621,896			(9,004		)	—			821,604
Interest expense	(29,032		)	(8		)	(9,833		)	(39		)	10,730			(28,182		)
Other income (expense), net	14,488			(1,729		)	3,135			(724		)	(10,730		)	4,440
(Loss) income before income taxes	(16,018		)	208,449			615,198			(9,767		)	—			797,862
(Benefit from) provision for income taxes	(5,686		)	109,920			198,461			(2,464		)	—			300,231
Equity in net income of subsidiaries	505,564			410,875			—			5,862			(922,301		)	—
Net income (loss)	495,232			509,404			416,737			(1,441		)	(922,301		)	497,631
Net income attributable to noncontrolling interests	—			—			—			2,399			—			2,399
Net income (loss) attributable to Westlake Chemical Corporation	$	495,232		$	509,404		$	416,737		$	(3,840	)	$	(922,301	)	$	495,232
Comprehensive income (loss) attributable to Westlake Chemical Corporation	$	461,415		$	509,787		$	416,737		$	(41,722	)	$	(884,802	)	$	461,415

Condensed Consolidating Financial Information for the Nine Months Ended September 30, 2013



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	2,407,341		$	1,565,809		$	37,561		$	(1,202,852	)	$	2,807,859
Cost of sales	—			2,247,338			924,663			32,943			(1,202,852		)	2,002,092
Gross profit	—			160,003			641,146			4,618			—			805,767
Selling, general and administrative expenses	1,576			84,152			19,326			4,829			—			109,883
(Loss) income from operations	(1,576		)	75,851			621,820			(211		)	—			695,884
Interest expense	(14,882		)	(39		)	(4,893		)	—			4,893			(14,921		)
Other income (expense), net	7,490			(4,002		)	6,422			(1,880		)	(4,893		)	3,137
(Loss) income before income taxes	(8,968		)	71,810			623,349			(2,091		)	—			684,100
(Benefit from) provision for income taxes	(3,202		)	27,292			221,009			(452		)	—			244,647
Equity in net income of subsidiaries	445,219			402,340			—			—			(847,559		)	—
Net income (loss) attributable to Westlake Chemical Corporation	$	439,453		$	446,858		$	402,340		$	(1,639	)	$	(847,559	)	$	439,453
Comprehensive income (loss) attributable to Westlake Chemical Corporation	$	439,372		$	447,490		$	402,340		$	(2,483	)	$	(847,347	)	$	439,372

Condensed Consolidating Financial Information for the Nine Months Ended September 30, 2014



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income (loss)	$	495,232		$	509,404		$	416,737		$	(1,441	)	$	(922,301	)	$	497,631
Adjustments to reconcile net income (loss) to net cash (used for) provided by operating activities
Depreciation and amortization	1,172			82,597			58,501			7,296			—			149,566
Deferred income taxes	(418		)	26,991			8,267			(381		)	—			34,459
Net changes in working capital and other	(509,862		)	(919,521		)	1,641			599,909			922,301			94,468
Net cash (used for) provided by operating activities	(13,876		)	(300,529		)	485,146			605,383			—			776,124
Cash flows from investing activities
Acquisition of business, net of cash acquired	—			—			—			(611,087		)	—			(611,087		)
Additions to property, plant and equipment	—			(160,147		)	(144,348		)	(6,688		)	—			(311,183		)
Proceeds from disposition of assets	—			144			—			1			—			145
Proceeds from repayment of loan acquired	—			—			—			45,923			—			45,923
Proceeds from sales and maturities of securities	342,045			—			—			—			—			342,045
Purchase of securities	(117,332		)	—			—			—			—			(117,332		)
Settlements of derivative instruments	—			(556		)	(133		)	—			—			(689		)
Net cash provided by (used for) investing activities	224,713			(160,559		)	(144,481		)	(571,851		)	—			(652,178		)
Cash flows from financing activities
Intercompany financing	75,104			(143,325		)	62,221			6,000			—			—
Net distributions prior to WLKP initial public offering	—			448,101			(448,101		)	—			—			—
Capitalized debt issuance costs	(1,167		)	—			—			—			—			(1,167		)
Dividends paid	(55,690		)	151,729			(151,729		)	—			—			(55,690		)
Net proceeds from issuance of WLKP common units	—			—			—			286,088			—			286,088
Purchase of limited partner interests	—			—			286,088			(286,088		)	—			—
Proceeds from exercise of stock options	5,502			—			—			—			—			5,502
Repurchase of common stock for treasury	(9,495		)	—			—			—			—			(9,495		)
Windfall tax benefits from share-based payment arrangements	6,670			—			—			—			—			6,670
Net cash provided by (used for) financing activities	20,924			456,505			(251,521		)	6,000			—			231,908



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries			Eliminations		Consolidated
Effect of exchange rate changes on cash and cash equivalents	—		—			—		(3,687		)	—		(3,687		)
Net increase (decrease) in cash and cash equivalents	231,761		(4,583		)	89,144		35,845			—		352,167
Cash and cash equivalents at beginning of period	420,948		6,227			—		34,126			—		461,301
Cash and cash equivalents at end of period	$	652,709	$	1,644		$	89,144	$	69,971		$	—	$	813,468

Condensed Consolidating Financial Information for the Nine Months Ended September 30, 2013



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income (loss)	$	439,453		$	446,858		$	402,340		$	(1,639	)	$	(847,559	)	$	439,453
Adjustments to reconcile net income (loss) to net cash (used for) provided by operating activities
Depreciation and amortization	1,094			59,893			54,539			1,861			—			117,387
Deferred income taxes	(1,102		)	57,279			27,253			13			—			83,443
Net changes in working capital and other	(458,336		)	(421,066		)	(68,604		)	7,664			847,559			(92,783		)
Net cash (used for) provided by operating activities	(18,891		)	142,964			415,528			7,899			—			547,500
Cash flows from investing activities
Acquisition of business	—			(178,309		)	—			—			—			(178,309		)
Additions to equity investments	—			(23,338		)	—			—			—			(23,338		)
Additions to property, plant and equipment	—			(337,158		)	(158,869		)	(2,263		)	—			(498,290		)
Construction of assets pending sale-leaseback	—			(136		)	—			—			—			(136		)
Proceeds from disposition of assets	—			6			—			72			—			78
Proceeds from repayment of loan to affiliate	—			—			—			167			—			167
Proceeds from sales and maturities of securities	239,764			—			—			—			—			239,764
Purchase of securities	(232,286		)	—			—			—			—			(232,286		)
Settlements of derivative instruments	—			—			(2,297		)	—			—			(2,297		)
Net cash provided by (used for) investing activities	7,478			(538,935		)	(161,166		)	(2,024		)	—			(694,647		)
Cash flows from financing activities
Intercompany financing	(130,832		)	(28,499		)	167,629			(8,298		)	—			—
Net distributions prior to WLKP initial public offering	—			421,991			(421,991		)	—			—			—
Dividends paid	(40,204		)	—			—			—			—			(40,204		)
Proceeds from exercise of stock options	3,182			—			—			—			—			3,182
Repurchase of common stock for treasury	(19,409		)	—			—			—			—			(19,409		)
Windfall tax benefits from share-based payment arrangements	5,056			—			—			—			—			5,056
Net cash (used for) provided by financing activities	(182,207		)	393,492			(254,362		)	(8,298		)	—			(51,375		)



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries			Eliminations		Consolidated
Net decrease in cash and cash equivalents	(193,620		)	(2,479		)	—		(2,423		)	—		(198,522		)
Cash and cash equivalents at beginning of period	753,881			6,973			—		29,224			—		790,078
Cash and cash equivalents at end of period	$	560,261		$	4,494		$	—	$	26,801		$	—	$	591,556