Guarantor Disclosures

The Company's payment obligations under the 3.60% senior notes due 2022 are fully and unconditionally guaranteed by each of its current and future domestic subsidiaries that guarantee other debt of the Company or of another guarantor of the 3.60% senior notes due 2022 in excess of $5,000 (the "Guarantor Subsidiaries"). Each Guarantor Subsidiary is 100% owned by Westlake Chemical Corporation. These guarantees are the joint and several obligations of the Guarantor Subsidiaries. The following unaudited condensed consolidating financial information presents the financial condition, results of operations and cash flows of Westlake Chemical Corporation, the Guarantor Subsidiaries and the remaining subsidiaries that do not guarantee the 3.60% senior notes due 2022 (the "Non-Guarantor Subsidiaries"), together with consolidating adjustments necessary to present the Company's results on a consolidated basis.

Condensed Consolidating Financial Information as of June 30, 2013



	Westlake Chemical Corporation		Guarantor Subsidiaries		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	592,311	$	3,464	$	29,726	$	—		$	625,501
Marketable securities	29,969		—		—		—			29,969
Accounts receivable, net	16,924		681,485		6,087		(228,858		)	475,638
Inventories	—		411,030		16,109		—			427,139
Prepaid expenses and other current assets	130		18,569		2,074		—			20,773
Deferred income taxes	431		21,581		91		—			22,103
Total current assets	639,765		1,136,129		54,087		(228,858		)	1,601,123
Property, plant and equipment, net	—		1,777,888		7,686		—			1,785,574
Equity investments	2,464,841		81,679		31,769		(2,529,809		)	48,480
Other assets, net	17,537		261,704		1,112		(7,195		)	273,158
Total assets	$	3,122,143	$	3,257,400	$	94,654	$	(2,765,862	)	$	3,708,335
Current liabilities
Accounts payable	$	243,394	$	227,969	$	9,845	$	(234,201	)	$	247,007
Accrued liabilities	13,332		127,893		881		5,343			147,449
Total current liabilities	256,726		355,862		10,726		(228,858		)	394,456
Long-term debt	752,931		10,889		—		—			763,820
Deferred income taxes	—		393,249		735		(7,195		)	386,789
Other liabilities	—		50,744		40		—			50,784
Stockholders' equity	2,112,486		2,446,656		83,153		(2,529,809		)	2,112,486
Total liabilities and stockholders' equity	$	3,122,143	$	3,257,400	$	94,654	$	(2,765,862	)	$	3,708,335

Condensed Consolidating Financial Information as of December 31, 2012



	Westlake Chemical Corporation		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	753,881	$	6,973	$	29,224	$	—		$	790,078
Marketable securities	124,873		—		—		—			124,873
Accounts receivable, net	7,933		1,675,274		2,959		(1,286,007		)	400,159
Inventories	—		385,140		14,158		—			399,298
Prepaid expenses and other current assets	389		11,386		2,925		—			14,700
Deferred income taxes	431		21,581		293		—			22,305
Total current assets	887,507		2,100,354		49,559		(1,286,007		)	1,751,413
Property, plant and equipment, net	—		1,502,902		7,146		—			1,510,048
Equity investments	3,018,926		65,448		32,923		(3,073,561		)	43,736
Other assets, net	17,033		94,678		1,252		(5,964		)	106,999
Total assets	$	3,923,466	$	3,763,382	$	90,880	$	(4,365,532	)	$	3,412,196
Current liabilities
Accounts payable	$	1,285,530	$	192,443	$	13,969	$	(1,274,892	)	$	217,050
Accrued liabilities	12,808		178,915		852		(11,115		)	181,460
Total current liabilities	1,298,338		371,358		14,821		(1,286,007		)	398,510
Long-term debt	752,872		10,889		—		—			763,761
Deferred income taxes	—		331,320		934		(5,964		)	326,290
Other liabilities	—		51,312		67		—			51,379
Stockholders' equity	1,872,256		2,998,503		75,058		(3,073,561		)	1,872,256
Total liabilities and stockholders' equity	$	3,923,466	$	3,763,382	$	90,880	$	(4,365,532	)	$	3,412,196

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



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	928,782		$	13,684		$	(3,419	)	$	939,047
Cost of sales	—			657,457			11,522			(3,419		)	665,560
Gross profit	—			271,325			2,162			—			273,487
Selling, general and administrative expenses	552			36,055			1,653			—			38,260
(Loss) income from operations	(552		)	235,270			509			—			235,227
Interest expense	(5,332		)	(11		)	—			—			(5,343		)
Other (expense) income, net	(404		)	1,638			(1,329		)	—			(95		)
(Loss) income before income taxes	(6,288		)	236,897			(820		)	—			229,789
(Benefit from) provision for income taxes	(2,258		)	86,401			(170		)	—			83,973
Equity in net income of subsidiaries	149,846			—			—			(149,846		)	—
Net income (loss)	$	145,816		$	150,496		$	(650	)	$	(149,846	)	$	145,816
Comprehensive income (loss)	$	145,122		$	150,622		$	(1,470	)	$	(149,152	)	$	145,122

Condensed Consolidating Financial Information for the Three Months Ended June 30, 2012



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	902,684		$	13,435		$	(2,161	)	$	913,958
Cost of sales	—			703,421			10,802			(2,161		)	712,062
Gross profit	—			199,263			2,633			—			201,896
Selling, general and administrative expenses	497			28,933			1,488			—			30,918
(Loss) income from operations	(497		)	170,330			1,145			—			170,978
Interest expense	(11,562		)	(9		)	—			—			(11,571		)
Gain from sales of equity securities	1			15,951			—			—			15,952
Other income (expense), net	3,954			(1,279		)	(1,568		)	—			1,107
(Loss) income before income taxes	(8,104		)	184,993			(423		)	—			176,466
(Benefit from) provision for income taxes	(3,434		)	65,400			(1,001		)	—			60,965
Equity in net income of subsidiaries	120,171			—			—			(120,171		)	—
Net income	$	115,501		$	119,593		$	578		$	(120,171	)	$	115,501
Comprehensive income	$	97,500		$	102,562		$	129		$	(102,691	)	$	97,500

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2013



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,784,867		$	24,224		$	(5,397	)	$	1,803,694
Cost of sales	—			1,286,743			21,052			(5,397		)	1,302,398
Gross profit	—			498,124			3,172			—			501,296
Selling, general and administrative expenses	1,062			67,764			3,188			—			72,014
(Loss) income from operations	(1,062		)	430,360			(16		)	—			429,282
Interest expense	(11,590		)	(34		)	—			—			(11,624		)
Other income (expense), net	3,905			1,348			(1,829		)	—			3,424
(Loss) income before income taxes	(8,747		)	431,674			(1,845		)	—			421,082
(Benefit from) provision for income taxes	(3,132		)	155,452			(401		)	—			151,919
Equity in net income of subsidiaries	274,778			—			—			(274,778		)	—
Net income (loss)	$	269,163		$	276,222		$	(1,444	)	$	(274,778	)	$	269,163
Comprehensive income (loss)	$	268,277		$	276,726		$	(2,834	)	$	(273,892	)	$	268,277

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2012



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,929,016		$	23,278		$	(3,469	)	$	1,948,825
Cost of sales	—			1,558,408			19,353			(3,469		)	1,574,292
Gross profit	—			370,608			3,925			—			374,533
Selling, general and administrative expenses	1,002			53,688			3,240			—			57,930
(Loss) income from operations	(1,002		)	316,920			685			—			316,603
Interest expense	(23,733		)	(15		)	—			—			(23,748		)
Gain from sales of equity securities	1			15,951			—			—			15,952
Other income (expense), net	7,488			(2,978		)	(2,056		)	—			2,454
(Loss) income before income taxes	(17,246		)	329,878			(1,371		)	—			311,261
(Benefit from) provision for income taxes	(6,607		)	115,633			(1,079		)	—			107,947
Equity in net income of subsidiaries	213,953			—			—			(213,953		)	—
Net income (loss)	$	203,314		$	214,245		$	(292	)	$	(213,953	)	$	203,314
Comprehensive income (loss)	$	202,519		$	213,908		$	(229	)	$	(213,679	)	$	202,519

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2013



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income (loss)	$	269,163		$	276,222		$	(1,444	)	$	(274,778	)	$	269,163
Adjustments to reconcile net income (loss) to net cash (used for) provided by operating activities
Depreciation and amortization	730			74,298			1,267			—			76,295
Deferred income taxes	(1,230		)	61,610			45			—			60,425
Net changes in working capital and other	(279,039		)	(153,604		)	7,462			274,778			(150,403		)
Net cash (used for) provided by operating activities	(10,376		)	258,526			7,330			—			255,480
Cash flows from investing activities
Acquisition of business	—			(178,309		)	—			—			(178,309		)
Additions to equity investments	—			(6,113		)	—			—			(6,113		)
Additions to property, plant and equipment	—			(295,859		)	(2,014		)	—			(297,873		)
Construction of assets pending sale-leaseback	—			(136		)	—			—			(136		)
Proceeds from disposition of assets	—			2			60			—			62
Proceeds from repayment of loan to affiliate	—			—			167			—			167
Proceeds from sales and maturities of securities	209,785			—			—			—			209,785
Purchase of securities	(114,881		)	—			—			—			(114,881		)
Settlements of derivative instruments	—			(1,588		)	—			—			(1,588		)
Net cash provided by (used for) investing activities	94,904			(482,003		)	(1,787		)	—			(388,886		)
Cash flows from financing activities
Intercompany financing	(214,927		)	219,968			(5,041		)	—			—
Dividends paid	(25,120		)	—			—			—			(25,120		)
Proceeds from exercise of stock options	2,656			—			—			—			2,656
Repurchase of common stock for treasury	(13,283		)	—			—			—			(13,283		)
Windfall tax benefits from share-based payment arrangements	4,576			—			—			—			4,576
Net cash (used for) provided by financing activities	(246,098		)	219,968			(5,041		)	—			(31,171		)
Net (decrease) increase in cash and cash equivalents	(161,570		)	(3,509		)	502			—			(164,577		)
Cash and cash equivalents at beginning of period	753,881			6,973			29,224			—			790,078
Cash and cash equivalents at end of period	$	592,311		$	3,464		$	29,726		$	—		$	625,501

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2012



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income (loss)	$	203,314		$	214,245		$	(292	)	$	(213,953	)	$	203,314
Adjustments to reconcile net income (loss) to net cash (used for) provided by operating activities
Depreciation and amortization	801			69,514			1,663			—			71,978
Deferred income taxes	(717		)	7,270			167			—			6,720
Net changes in working capital and other	(220,440		)	45,051			(4,430		)	213,953			34,134
Net cash (used for) provided by operating activities	(17,042		)	336,080			(2,892		)	—			316,146
Cash flows from investing activities
Additions to property, plant and equipment	—			(139,876		)	(692		)	—			(140,568		)
Construction of assets pending sale-leaseback	—			(1,760		)	—			—			(1,760		)
Proceeds from disposition of assets	—			412			3			—			415
Proceeds from repayment of loan to affiliate	—			—			596			—			596
Proceeds from sales of equity securities	3			46,024			—			—			46,027
Purchase of securities	—			(2,961		)	—			—			(2,961		)
Settlements of derivative instruments	—			511			—			—			511
Net cash provided by (used for) investing activities	3			(97,650		)	(93		)	—			(97,740		)
Cash flows from financing activities
Intercompany financing	230,680			(236,256		)	5,576			—			—
Capitalized debt issuance costs	(98		)	—			—			—			(98		)
Dividends paid	(9,838		)	—			—			—			(9,838		)
Proceeds from exercise of stock options	4,508			—			—			—			4,508
Repurchase of common stock for treasury	(10,784		)	—			—			—			(10,784		)
Utilization of restricted cash	75,975			—			—			—			75,975
Windfall tax benefits from share-based payment arrangements	6,468			—			—			—			6,468
Net cash provided by (used for) financing activities	296,911			(236,256		)	5,576			—			66,231
Net increase in cash and cash equivalents	279,872			2,174			2,591			—			284,637
Cash and cash equivalents at beginning of period	803,320			2,517			20,064			—			825,901
Cash and cash equivalents at end of period	$	1,083,192		$	4,691		$	22,655		$	—		$	1,110,538