Exhibit 99.5

Sinovac Reports Unaudited Fourth Quarter and Full Year 2012 Financial Results

– Conference call scheduled for Thursday, April 18, 2013 at 8:00 AM EDT–

Beijing – April 18, 2013 – Sinovac Biotech Ltd. (NASDAQ: SVA), a leading provider of vaccines in China, announced today its unaudited fourth quarter and full year financial results for the period ended December 31, 2012.

Financial Highlights

l Total sales were $19.0 million for the fourth quarter of 2012, a decrease of 10.4% from $21.1 million in the same period of 2011. Excluding sales of Panflu and Panflu.1 under the government stockpiling program in the fourth quarter of 2011, total sales in the fourth quarter of 2012 increased by 166.9% from $7.1 million in the same period of 2011. 2012 full year sales were $48.6 million, a decrease of 14.5% from $56.8 million in 2011. Excluding sales of Panflu and Panflu.1 under the government stockpiling program in 2011, the regular sales, including Healive, Bilive and Anflu, mumps vaccine and RabEnd, increased by 38.6% to $48.6 million in 2012.

l Net loss attributable to common stockholders in the fourth quarter of 2012 was $5.4 million, or $0.10 per basic and diluted share. Full year 2012 net loss attributable to common stockholders was $15.7 million, or $0.29 per basic and diluted share. The operating expense for the fourth quarter and full year included a $1.5 million impairment charge on long-lived assets related to the production of animal vaccine.

l Cash and cash equivalents totaled $90.9 million as of December 31, 2012, compared to $104.3 million as of December 31, 2011.

Recent Business Highlights

l In March 2013, Sinovac announced preliminary top-line data from its phase III clinical trial assessing the efficacy, immunogenicity and safety of the Company’s proprietary enterovirus 71 (“EV71”) vaccine against hand, foot and mouth disease (“HFMD”). The primary objective of the study was to evaluate the efficacy of the EV71 vaccine in the prevention of HFMD caused by EV71 in infants of between 6 to 35 months of age. The preliminary phase III data showed that Sinovac’s EV71 vaccine was 95% efficacious against HFMD caused by EV71.

l In April 2013, Fengcai Zhu, Deputy Director of the Jiangsu Provincial Center for Disease Prevention and Control, and co-principal investigator of Sinovac’s phase III trial on EV71 vaccine, presented data regarding the efficacy and safety of the Company’s proprietary EV71 vaccine against HFMD at the 13th Annual World Vaccine Congress & Expo.

l Also in April, 2013, we were granted a license from COFEPRIS, the regulatory authority of Mexico's Ministry of Health, to sell Anflu in Mexico.

Dr. Weidong Yin, Chairman, President and CEO, commented, “2012 was a transformative year for Sinovac as we focused on continuing to advance our vaccine development pipeline. We invested significantly in research and development this year for our lead candidate, our proprietary EV71 vaccine against HFMD. We are well positioned for medium- to long-term growth as this vaccine progresses through the regulatory process and approaches launch.”

Dr. Yin continued, “EV71 represents a significant unmet medical need in China with over 2.16 million cases reported in 2012, from which 560 fatalities were reported, Most of serve cases of EV71 infection were seen in children under 5 years old, which totaled approximately 80 million in China. Unfortunately, no EV71-specific treatment and prevention method currently exists. With knowledge of this unmet need, we commenced development of an EV71 vaccine in 2008, and recently concluded the phase III efficacy trial for this candidate. In March 2013, the unblinded top-line results from the phase III clinical trial for the vaccine demonstrated a 95% efficacy rate against HFMD caused by EV71. We expect our EV71 vaccine, once commercialized, will provide a solution to this unmet medical need in China.”

Dr. Yin concluded, “I am also very pleased with the 38.6% increase in regular vaccine sales for 2012. Growth was achieved across all three of our market segments: private pay market, public market and international market. Sinovac’s core products, inclusive of Healive, Bilive, and Anflu, contributed to our sales growth, with Bilive and Healive sales in the private market in China being the primary contributors to both the rate and magnitude of the sales increase. Our financial results benefited from a successful price increase for both of these products, as well as higher volume. Our well-trained, experienced sales team continues to drive growth in our commercialized vaccine products, but also has taken significant strides to increase efficacy in our sales and marketing infrastructure, positioning us well for future vaccine product launches, such as the EV71 vaccine.”

Financial Review for Unaudited Fourth Quarter Ended December 31, 2012

An analysis of sales and gross profit is as follows:

In USD	2012 Q4	% of Sales		2011 Q4	% of Sales		Fluctuation %
Healive-hepatitis A	10,037,198	53.0	%	2,970,802	14.1	%	237.9	%
Bilive-hepatitis A&B	3,784,668	20.0	%	605,624	2.9	%	524.9	%
Anflu- influenza	5,091,076	26.8	%	3,523,452	16.7	%	44.5	%
Core sales	18,912,942	99.8	%	7,099,878	33.7	%	166.4	%
Mumps	23,925	0.1	%
Rabend (Animal)	14,634	0.1	%
Regular Sales	18,951,501			7,099,878			166.9	%
Panflu.1 -H1N1				14,004,653	66.2	%
Panflu-H5N1				38,873	0.1	%
Total sales	18,951,501			21,143,404			-10.4	%
Cost of Sales	8,698,009			8,031,758
Gross profit	10,253,492	54.1	%	13,111,646	62.0	%	-21.8	%

Total revenue for the fourth quarter of 2012 was $19.0 million, a decrease of 10.4% from $21.1 million in the same period of 2011. Fourth quarter 2012 sales of our regular products, Healive, Bilive, Anflu, mumps vaccine and RabEnd, increased by 166.9% to $19.0 million from $7.1 million in the same period of 2011. The significant increase in sales of core products in the fourth quarter was driven by: 1) expansion of Healive to a new territory of Jiangsu Province in the fourth quarter; 2) the successful implementation of a new sales strategy to achieve both volume growth and average selling price increase for hepatitis vaccines; and 3) higher Anflu sales in the fourth quarter compared to other regular years due to a later start of the Anflu sales season in 2012. 2011 sales included recognition of approximately $14 million revenue from Panflu and Panflu.1 vaccines stockpiled by the Chinese government in 2010. These two products are not for regular sales, since they were produced upon government order and subject to the government decision of using the vaccines within its shelf life if there was any flu pandemic caused by H1N1 and/or H5N1. The Company’s revenue recognition requirements were not met until the fourth quarter of 2011. And in 2012, there was no revenue recognized for either Panflu or Panflu.1.

Compared with the fourth quarter of 2011, the gross profit margin for the fourth quarter of 2012 decreased from 62.0% to 54.1%. The higher gross margin in the fourth quarter of 2011 was due to the recognition of $14 million revenue from H1N1 vaccine stockpiling, which has a higher gross profit margin than other vaccines.

Selling, general and administrative expenses for the fourth quarter of 2012 were $12.8 million, compared to $5.9 million in the same period of 2011. The increase in SG&A was largely due to an increase in G&A, although both selling expense and general and administration expense increased. The increase of G&A expense was resulted from the increased expenses incurred for validation, commissioning, and trial production for the dedicated production facility for our EV71 vaccine at the Changping site, Beijing, and the preparation for GMP inspection by the government authorities of our existing manufacturing facilities in both the Changping and Shangdi sites in Beijing for compliance with China’s 2010 GMP guidelines.

The R&D expense for the fourth quarter of 2012 was $1.3 million, a $1 million decrease from $2.3 million for the same period in 2011, due to lower EV71 clinical trial expense as the trial approaching its end.

Depreciation of property, plant and equipment and amortization of licenses and permits for the fourth quarter of 2012 was $0.5 million, compared to $0.4 million for the same period in 2011.

For the fourth quarter of 2012, an impairment charge of $1.5 million on the long-lived assets including plant and building, machinery and equipments related to the animal vaccine production was made.

Net loss attributable to stockholders for the fourth quarter of 2012 was $5.4 million, or $0.10 per basic and diluted share, compared to a net income of $2.8 million, or $0.05 per basic and diluted share, for the same period in 2011.

Financial Review for Unaudited Full Year Results Ended December 31, 2012

An analysis of sales and gross profit of full year 2012 is as follows:

In USD	2012		% of Sales			2011		% of Sales			Fluctuation %
Healive-hepatitis A		20,141,416		41.5	%		14,217,393		25.0	%		41.7	%
Bilive-hepatitis A&B		19,417,940		40.0	%		12,721,993		22.4	%		52.6	%
Anflu-influenza		8,943,937		18.4	%		8,112,279		14.3	%		10.3	%
Core sales		48,503,293		99.9	%		35,051,665		61.7	%		38.4	%
Mumps		23,925		0.0	%
Rabend (Animal)		49,482		0.1	%
Regular Sales		48,576,700		100.0	%		35,051,665		61.7	%		38.6	%
Panflu.1 -H1N1							14,008,225		24.6	%
Panflu-H5N1							7,782,002		13.7	%
Total Sales		48,576,700					56,841,892		100.0	%		-14.5	%
Cost of goods sold		19,099,927					21,127,410
Gross profit		29,476,773		60.7	%		35,714,482		62.8	%		-17.5	%

Total revenue for the fiscal year ended December 31, 2012 was $48.6 million, a decrease of 14.5% from $56.8 million reported in 2011. Excluding the revenue recognized on the government stockpiling of Panflu and Panflu.1 in 2010, sales of our regular products, Healive, Bilive and Anflu, mumps vaccine and RabEnd, increased by 38.6% to $48.6 million in 2012 from $35.1 million in 2011.

Gross profit margin was 60.7% in 2012, a decline from 62.8% in 2011. Excluding the impact to sales and cost of sales in both years by of Panflu and Panflu.1, the gross margin of regular vaccine products increased to 63.7% in 2012 from 57.7% in 2011.

Selling, general and administrative expenses in 2012 were $31.7 million, compared to $22.4 million in 2011. The increase in SG&A was largely due to an increase in G&A, although both selling expense and general and administration expense increased. The increase of G&A expense was due to the increased cost incurred on the validation of the new facilities in Changping site and preparation for new GMP compliance inspection of our existing manufacturing facilities in both Changping and Shangdi sites.

Research and development expenses in 2012 increased to $17.0 million from $9.0 million in 2011. The increase was mainly due to expense incurred in 2012 in connection with the EV71 phase III clinical trial.

Depreciation of property, plant and equipment and amortization of licenses and permits in 2012 was $1.6 million, compared to $1.4 million in 2011. The higher depreciation in 2012 was mainly due to the additional depreciation on property, plant and equipment of the Changping site.

The Company recorded loss on disposal and impairment of property, plant and equipment of $2.2 million as operating expense, in which $1.5 million was for animal vaccine production related assets and $0.5 million was for human vaccine production related assets.

Net loss attributable to stockholders in 2012 was $15.7 million, or $0.29 per basic and diluted share, compared to a net loss of $0.8 million, or $0.02 per basic and diluted share in 2011.

As of December 31, 2012, cash and cash equivalents totaled $90.9 million, compared to $104.3 million as of December 31, 2011. Net cash used in operating activities was $16.6 million in 2012, which primarily resulted from payment made for EV71 clinical trial and validation of the new facilities in Changping, Beijing and new GMP inspection preparation expenses. Net cash used in investing activities was $16.2 million, which primarily resulted from payment for the purchase of property, plant and equipment for the Changping site. Net cash provided by financing activities was $17.3 million in 2012. The Company maintained a strong cash balance despite significant expenditure on the phase III clinical trial of EV71 vaccine candidate and investment in its production facilities. In order to commercialize other pipeline products, the Company may continue to explore new sources of financing when appropriate.

Correction of Unaudited Financials in Prior Quarterly Release

In the second quarter of 2012, the Company assessed there was reasonable assurance that the conditions attached to several government grants were fulfilled and recognized $1.4 million and $1.5 million of government grants as income for the three and six months periods ended June, 30, 2012, respectively. In the fourth quarter of 2012, the Company determined that government grants of $0.98 million (RMB 6.2 million) related to the purchase of equipment that should have been recorded as deferred government grants with the balance applied to reduce depreciation expense of the related equipment over their remaining useful lives. As a result, the amount of government grants recognized as income should be reduced by $0.98 million for the three and six months periods ended June 30, 2012, and $0.98 million for the nine months periods ended September 30, 2012, respectively. The depreciation expense should also be reduced by $11,679 and $11,679 for the three and six months periods ended June 30, 2012, and $36,646 and $46,636 for the three and nine months periods ended September 30, 2012, respectively. Net cash used from operating activities remained unchanged, because the adjustments on net loss, depreciation of property, plant and equipment and amortization of licenses and permits, and the recognized government grant income in operating activities did not affect cash. Corresponding corrections were made for both the unaudited fourth quarter and full year 2012 financial statements. The corrections to earning releases that were issued in the affected quarters in 2012 are presented in the tables below. Investors should no longer rely upon the previously released unaudited financial statements for the periods and any earnings releases or other communications relating to these periods.

Consolidated Statements of Income (Loss) and Comprehensive Income (Loss):

Unaudited Three-month and six-month period ended June 30, 2012

	Three months ended 'June 30 2012									Six months ended 'June 30 2012
	Previously Reported			Adjustment			Corrected Report			Previously Reported			Adjustment			Corrected Report
Sales		9,364,632			-			9,364,632			15,338,099			-			15,338,099
Cost of sales		1,375,917			-			1,375,917			3,631,206			-			3,631,206
Gross profit		7,988,715			-			7,988,715			11,706,893			-			11,706,893
Selling, general and administrative expenses		6,700,526			-			6,700,526			11,020,815			-			11,020,815
Research and development expenses - net of		4,676,703			-			4,676,703			12,018,875			-			12,018,875
Depreciation of property, plant and equipment  and amortization of  licenses and permits		324,944			(11,679	)		313,265			632,387			(11,679	)		620,708
Government grants recognized in income		(1,386,126	)		981,044			(405,082	)		(1,457,330	)		981,044			(476,286	)
Total operating expenses		10,316,047			969,365			11,285,412			22,214,747			969,365			23,184,112
Operating income (loss)		(2,327,332	)		(969,365	)		(3,296,697	)		(10,507,854	)		(969,365	)		(11,477,219	)
Interest income		498,856			-			498,856			1,096,527			-			1,096,527
Interest and financing expenses		(232,078	)		-			(232,078	)		(446,398	)		-			(446,398	)
Other income (Expenses)		14,635			-			14,635			132,713			-			132,713
Income (loss)  before income taxes and non-
controlling interests		(2,045,919	)		(969,365	)		(3,015,284	)		(9,725,012	)		(969,365	)		(10,694,377	)
Income tax recovery (expenses)		797,462			-			797,462			800,364			-			800,364
Consolidated net income (loss)		(1,248,457	)		(969,365	)		(2,217,822	)		(8,924,648	)		(969,365	)		(9,894,013	)
Less: income (loss) attributable to non-controlling interests		(326,828	)		(260,856	)		(587,684	)		(2,389,964	)		(260,856	)		(2,650,820	)
Net income (loss) attributable to stockholders		(921,629	)		(708,509	)		(1,630,138	)		(6,534,684	)		(708,509	)		(7,243,193	)
Net income (loss)		(1,248,457	)		(969,365	)		(2,217,822	)		(8,924,648	)		(969,365	)		(9,894,013	)
Other comprehensive income (loss)
Foreign currency translation adjustment		(474,801	)		5,067			(469,734	)		171,982			5,067			177,049
Total comprehensive income (loss)		(1,723,258	)		(964,298	)		(2,687,556	)		(8,752,666	)		(964,298	)		(9,716,964	)
Comprehensive income(loss) attributable to stockholders		(1,349,264	)		(704,806	)		(2,054,070	)		(6,399,083	)		(704,806	)		(7,103,889	)
Basic and diluted earnings (loss) per share		(0.02	)		(0.01	)		(0.03	)		(0.12	)		(0.01	)		(0.13	)
Weighted average number of shares
of common stock outstanding
- Basic		54,804,498			54,804,498			54,804,498			54,784,801			54,784,801			54,784,801
- Diluted		54,804,498			54,804,498			54,804,498			54,784,801			54,784,801			54,784,801

Unaudited Three-month and six-month period ended September 30, 2012

	Three months ended 'September 30 2012									Nine months ended 'September 30 2012
	Previously Reported			Adjustment			Corrected Report			Previously Reported			Adjustment			Corrected Report
Sales		14,287,100			-			14,287,100			29,625,199			-			29,625,199
Cost of sales		6,770,712			-			6,770,712			10,401,918			-			10,401,918
Gross profit		7,516,388			-			7,516,388			19,223,281			-			19,223,281
Selling, general and administrative expenses		7,844,861			-			7,844,861			18,865,676			-			18,865,676
Research and development expenses - net of		3,773,625			-			3,773,625			15,792,500			-			15,792,500
Depreciation of property, plant and equipment and amortization of  licenses and permits		471,242			(36,646	)		434,596			1,103,629			(46,636	)		1,056,993
Provision for doubtful debts		97,067			-			97,067			97,067			-			97,067
Government grants recognized in income		(78,053	)		-			(78,053	)		(1,535,383	)		979,355			(556,028	)
Total operating expenses		12,108,742			(36,646	)		12,072,096			34,323,489			932,719			35,256,208
Operating income (loss)		(4,592,354	)		36,646			(4,555,708	)		(15,100,208	)		(932,719	)		(16,032,927	)
Interest income		464,512			-			464,512			1,561,039						1,561,039
Interest and financing expenses		302,846			-			302,846			(143,552	)		-			(143,552	)
Other income (Expenses)		(47,283	)		-			(47,283	)		85,430						85,430
Income (loss)  before income taxes and non- controlling interests		(3,872,279	)		36,646			(3,835,633	)		(13,597,291	)		(932,719	)		(14,530,010	)
Income tax recovery (expenses)		(5,958	)		-			(5,958	)		794,406			-			794,406
Consolidated net income (loss)		(3,878,237	)		36,646			(3,841,591	)		(12,802,885	)		(932,719	)		(13,735,604	)
Less: income (loss) attributable to non-controlling interests		(849,619	)		9,861			(839,758	)		(3,239,583	)		(250,995	)		(3,490,578	)
Net income (loss) attributable to stockholders		(3,028,618	)		26,785			(3,001,833	)		(9,563,302	)		(681,724	)		(10,245,026	)
Net income (loss)		(3,878,237	)		36,646			(3,841,591	)		(12,802,885	)		(932,719	)		(13,735,604	)
Other comprehensive income (loss)
Foreign currency translation adjustment		890,063			(11,880	)		878,183			1,062,045			(6,813	)		1,055,232
Total comprehensive income (loss)		(2,988,174	)		24,766			(2,963,408	)		(11,740,840	)		(939,532	)		(12,680,372	)
Less: comprehensive income (loss) attributable to non-controlling interests		(744,732	)		6,664			(738,068	)		(3,098,315	)		(252,828	)		(3,351,143	)
Comprehensive income(loss) attributable to stockholders		(2,243,442	)		18,102			(2,225,340	)		(8,642,525	)		(686,704	)		(9,329,229	)
Basic and diluted earnings (loss) per share		(0.06	)		0.01			(0.05	)		(0.17	)		(0.02	)		(0.19	)
Weighted average number of shares
of common stock outstanding
- Basic		55,023,070			55,023,070			55,023,070			54,881,874			54,881,874			54,881,874
- Diluted		55,023,070			55,023,070			55,023,070			54,881,874			54,881,874			54,881,874

Unaudited Consolidated Balance Sheet:

	June 30 2012									September 30 2012
	Previously Reported			Adjustment			Corrected Report			Previously Reported			Adjustment			Corrected Report
ASSETS
Current assets
Cash and cash equivalents		89,440,373			-			89,440,373			81,962,420			-			81,962,420
Accounts receivable – net		18,533,886			-			18,533,886			25,316,304			-			25,316,304
Inventories		14,226,557			-			14,226,557			14,099,902			-			14,099,902
Prepaid expenses and deposits		1,408,762			-			1,408,762			905,437			-			905,437
Total current assets		123,609,578			-			123,609,578			122,284,063			-			122,284,063
Property, plant and equipment		80,961,440			-			80,961,440			82,994,261			-			82,994,261
Long-term inventories		3,974,552			-			3,974,552			2,227,196			-			2,227,196
Long-term prepaid expenses		343,374			-			343,374			311,079			-			311,079
Prepayments for acquisition of equipment		452,144			-			452,144			525,972			-			525,972
Deferred tax assets		353,903			-			353,903			351,627			-			351,627
Licenses and permits		1,278,421			-			1,278,421			1,261,820			-			1,261,820
Total assets		210,973,412			-			210,973,412			209,956,018			-			209,956,018
LIABILITIES AND EQUITY
Current liabilities
Loans payable		4,722,178			-			4,722,178			4,773,422			-			4,773,422
Accounts payable and accrued liabilities		28,698,963			-			28,698,963			27,529,207			-			27,529,207
Income tax payable		234,156			-			234,156			236,697			-			236,697
Deferred revenue		3,794,136			-			3,794,136			8,108,669			-			8,108,669
Dividends payable		0			-			0			-			-			-
Deferred government grants		100,897			345,471			446,368			101,992			349,222			451,214
Total current liabilities		37,550,330			345,471			37,895,801			40,749,987			349,222			41,099,209
Deferred government grants		2,805,528			618,827			3,424,355			2,761,758			590,310			3,352,068
Loans payable		23,330,072			-			23,330,072			24,670,318			-			24,670,318
Due to related party		3,167,008			-			3,167,008			3,201,375			-			3,201,375
Deferred revenue		6,925,862			-			6,925,862			4,194,246			-			4,194,246
Total long term liabilities		36,228,470			618,827			36,847,297			34,827,697			590,310			35,418,007
Total liabilities		73,778,800			964,298			74,743,098			75,577,684			939,532			76,517,216
Commitments and contingencies
EQUITY
Preferred stock		-			-			-			-			-			-
Authorized 50,000,000 shares at par value of					-									-
$0.001 each  Issued and outstanding: nil					-									-
Common stock		55,020						55,020			55,024			-			55,024
Additional paid-in capital		106,032,906						106,032,906			106,204,800			-			106,204,800
Accumulated other comprehensive income		10,113,926			5,067			10,118,993			10,899,102			-6,813			10,892,289
Statutory surplus reserves		11,808,271						11,808,271			11,808,271			-			11,808,271
Retained earnings(accumulated deficit)		(3,838,457	)		(708,509	)		(4,546,966	)		(6,867,075	)		(681,724	)		(7,548,799	)
Total stockholders' equity		124,171,666			(703,442	)		123,468,224			122,100,122			(688,537	)		121,411,585
Non-controlling interests		13,022,946			(260,856	)		12,762,090			12,278,212			(250,995	)		12,027,217
Total equity		137,194,612			(964,298	)		136,230,314			134,378,334			(939,532	)		133,438,802
Total liabilities and equity		210,973,412			-			210,973,412			209,956,018			-			209,956,018

Conference Call Details

The Company will host a conference call on Thursday, April 18, 2013, at 8:00 a.m. EDT (April 18, 2013, at 8:00 p.m. China Standard Time) to review the Company's financial results and provide an update on recent corporate developments.

To access the conference call, please dial 1-877-407-4018 (USA) or 1-201-689-8471 (International). A replay of the call will be available from 11 a.m. EDT on April 18, 2013 to May 2, 2013 at midnight. To access the replay, please dial 1-877-870-5176 (USA) or 1-858-384-5517 (International) and reference the replay pin number 411774.

A live audio webcast of the call will also be available from the investors section on the corporate web site at www.sinovac.com. A webcast replay can be accessed on the corporate website beginning April 18, 2013, and the replay will remain available for 30 days.

Statement Regarding Unaudited Financial Information

The unaudited financial information set forth above is subject to adjustments that may be identified when audit work is performed on the Company’s year-end financial statements, which could result in significant differences from this unaudited financial information. The Company expects to file final audited results with the SEC shortly.

About Sinovac

Sinovac Biotech Ltd. is a China-based biopharmaceutical company that focuses on the research, development, manufacturing and commercialization of vaccines that protect against human infectious diseases including hepatitis A and B, seasonal influenza, H5N1 pandemic influenza (avian flu), H1N1 influenza (swine flu) and mumps, as well as animal rabies vaccine for canines. The Company recently concluded the phase III clinical trial for enterovirus 71 (against hand, foot and mouth disease). In 2009, Sinovac was the first company worldwide to receive approval for its H1N1 influenza vaccine, Panflu.1, and has manufactured it for the Chinese Central Government, pursuant to the government-stockpiling program. The Company is also the only supplier of the H5N1 pandemic influenza vaccine to the government-stockpiling program. Sinovac is developing a number of new pipeline vaccines including vaccines for pneumococcal polysaccharides, pneumococcal conjugate, varicella and rubella. Sinovac sells its vaccines mainly in China and exports selected vaccines to Mongolia, Nepal, and the Philippines. Sinovac was also granted a license to commercialize seasonal flu vaccine in Mexico.

Safe Harbor Statement

This announcement contains forward-looking statements. These statements are made under the "safe harbor" provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by words or phrases such as "will," "expects," "anticipates," "future," "intends," "plans," "believes," "estimates" and similar statements. Among other things, the business outlook and quotations from management in this press release contain forward-looking statements. Statements that are not historical facts, including statements about Sinovac's beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those contained in any forward-looking statement. Sinovac does not undertake any obligation to update any forward-looking statement, except as required under applicable law.

Helen Yang

Sinovac Biotech Ltd.

Tel: +86-10-8279-9871

Fax: +86-10-6296-6910

Email: ir@sinovac.com

Investors:

Stephanie Carrington

The Ruth Group

Tel: +1-646-536-7017

Email: scarrington@theruthgroup.com

Media:

Aaron Estrada

The Ruth Group

Tel: +1-646-536-7028

Email: vaguiar@theruthgroup.com

SINOVAC BIOTECH LTD.
Incorporated in Antigua and Barbuda
Consolidated Statements of Income (Loss) and Comprehensive Income (Loss)
Years ended December 31, 2012 and 2011
(Unaudited)	Three months ended					Twelve months ended
(Expressed in U.S. Dollars)	31-Dec					31-Dec
	2012			2011		2012			2011
Sales	$	18,951,501		$	21,143,404	$	48,576,700		$	56,841,892
Cost of sales-(exclusive of depreciation of land use right and amortization of licenses and  permits of $126,998 (2011- $33,507) for three  months and $234,768  (2011 -$290,526) for twelve months.		8,698,009			8,031,758		19,099,927			21,127,410
Gross profit		10,253,492			13,111,646		29,476,773			35,714,482
Selling, general and administrative expenses		12,819,508			5,909,584		31,685,185			22,372,095
Provision for (recovery of) doubtful accounts		-971,287			-1,661,581		-874,220			-166,865
Research and development expenses - net of $Nil (2011-$470,827) in government research grants for three months and $125,222 (2010-$686,258) for twelve months.		1,251,065			2,261,688		17,043,565			9,006,550
Depreciation of property, plant and equipment  and amortization of  licenses and permits		539,672			365,391		1,594,976			1,436,944
Loss of disposal and impairment of property, plant and equipment		2,190,504			259,464		2,190,504			454,973
Government grant recognised as income		181,486			-556,169		-372,853			-763,677
Total operating expenses		16,010,948	-		6,578,377		51,267,157	-		32,340,020
Operating income (loss)		-5,757,456	-		6,533,269		-21,790,384	-		3,374,462
Interest and financing expenses –net of $485,317 (2010-$nil) in government grants for three months and $595,883 (2010-$147,520) for twelve months.		-630,824			61,756		-774,376			-384,560
Interest income		449,745			555,375		2,010,784			1,397,141
Other income (expenses)		-162,627			122,452		-77,197			279,866
Loss on disposal and write down of equipment
Income (loss)  before income taxes and non-controlling interests		-6,101,162	-		7,272,852		-20,631,173	-		4,666,909
Income tax recovery (expenses)		89,491			-3,009,880		883,897			-5,066,603
Consolidated net income (loss)		-6,011,671	-		4,262,972		-19,747,276	-		-399,694
Less: income (loss) attributable to non-controlling interests		-577,578			1,494,118		-4,068,156			445,002
Net income (loss) attributable to stockholders	$	-5,434,093		$	2,768,854	$	-15,679,120		$	-844,696
Net income (loss)	$	-6,011,671		$	4,262,972	$	-19,747,276		$	-399,694
Other comprehensive income
Foreign currency translation adjustment		960,352			789,653		2,015,584			3,639,992
Total comprehensive income (loss)		-5,051,319			5,052,625		-17,731,692			3,240,298
Less: comprehensive income (loss) attributable to non-controlling interests		-488,125			1,595,969		-3,839,268			973,562
Comprehensive income (loss) attributable to stockholders	$	-4,563,194		$	3,456,656	$	-13,892,424		$	2,266,736
Earnings (loss) per share              – basic	$	-0.1		$	0.05	$	-0.29		$	-0.02
– diluted	$	-0.1		$	0.05	$	-0.29		$	-0.02
Weighted average number of shares of common stock outstanding
– Basic		55,037,264			54,766,428		54,926,440			54,608,919
– Diluted		55,037,264			54,946,194		54,926,440			54,608,919

SINOVAC BIOTECH LTD.
Incorporated in Antigua and Barbuda
Consolidated Balance Sheets
December 31, 2012 and 2011
(Unaudited)
(Expressed in U.S. Dollars)
	December 31, 2012		December 31,  2011
ASSETS
Current assets
Cash and cash equivalents	$	90,881,970	$	104,286,695
Accounts receivable – net		23,440,135		17,834,407
Inventories		10,529,476		8,113,428
Prepaid expenses and deposits		1,072,076		1,804,555
Total current assets		125,923,657		132,039,085
Property, plant and equipment		80,083,383		75,627,881
Long-term inventories		28,692		5,248,237
Long-term prepaid expenses		289,766		408,656
Prepayments for acquisition of equipment		483,278		828,902
Deferred tax assets		445,589		419,114
Licenses and permits		1,149,914		1,336,254
Total assets	$	208,404,279	$	215,908,129
LIABILITIES AND EQUITY
Current liabilities
Loans payable	$	3,328,590	$	4,713,498
Accounts payable and accrued liabilities		25,425,498		29,522,495
Income tax payable		238,775		3,351,127
Deferred revenue		11,972,155		429,416
Dividends payable		-		795,106
Deferred government grants		431,097		719,081
Total current liabilities		41,396,115		39,530,723
Deferred government grants		4,068,602		3,388,913
Loans payable		31,181,235		17,321,327
Due to related party		3,230,125		-
Deferred revenue		99,517		10,369,695
Total long term liabilities		38,579,479		31,079,935
Total liabilities		79,975,594		70,610,658
Commitments and contingencies
EQUITY
Preferred stock		-		-
Authorized 50,000,000 shares at par value of $0.001 each
Issued and outstanding: nil
Common stock		55,092		54,774
Authorized: 100,000,000 shares at par value of $0.001 each
Issued and outstanding:  55,091,561 (2011 – 54,773,961)
Additional paid-in capital		106,245,934		105,383,346
Accumulated other comprehensive income		11,765,021		9,978,325
Statutory surplus reserves		11,808,271		11,808,271
Retained earnings (accumulated deficit)		-12,982,893		2,696,227
Total stockholders' equity		116,891,425		129,920,943
Non-controlling interests		11,537,260		15,376,528
Total equity		128,428,685		145,297,471
Total liabilities and equity	$	208,404,279	$	215,908,129

SINOVAC BIOTECH LTD.
Incorporated in Antigua and Barbuda
Consolidated Statements of Cash Flows
Years ended December 31, 2012 and 2011
(Unaudited)
(Expressed in U.S. Dollars)
	Three months ended				Twelve months ended
	31-Dec				31-Dec
	2012		2011		2012		2011
Cash flows from (used in) operating activities
Net income (loss)	$	-6,011,671		4,262,972	$	-19,747,276	$	-399,694
Adjustments to reconcile net income to net cash
provided by operating activities:
- deferred income taxes		-89,491		788,472		-17,204		2,845,195
- stock-based compensation		-40,878		41,909		347,226		206,301
- inventory provision		2,113,825		2,735,822		3,479,453		4,034,169
- Provision for (recovery of)  doubtful accounts		-971,287		-1,661,581		-874,220		-166,865
Loss of disposal and impairment of property,  plant  and equipment		2,184,576		259,464		2,190,504		454,973
- research and development expenditures qualified forgovernment grant		-46,242		-470,827		-125,222		-686,258
- depreciation of property, plant and equipment
and amortization of licenses and permits		814,252		1,213,428		4,487,411		4,825,613
- deferred government grant recognized in income		109,340		-225,035		-358,230		-432,543
accretion expenses		49,608		86,780		234,957		377,410
Changes in:
- accounts receivable		3,016,814		6,014,109		-4,285,669		5,474,602
- inventories		3,715,070		-108,988		-425,853		-1,915,078
- income tax payable		-4,841		1,863,729		-3,129,693		1,339,812
- prepaid expenses and deposits		-135,558		-107,276		913,084		-530,715
- deferred revenue		-330,322.00		-1,190,534		1,026,283		-2,695,943
- accounts payable and accrued liabilities		3,451,254		3,075,574		-328,062		1,204,647
Net cash (used in) provided by operating activities		7,824,449		16,578,018		-16,612,511		13,935,626
Cash flows from financing activities
- Loan proceeds		9,489,001		7,399,314		16,787,057		11,391,836
- Loan repayment		-4,755,262		-9,275,502		-4,755,262		-10,658,840
net of share issuance costs		108,960		6,400		508,160		748,800
- Proceeds from shares subscribed		-26,880.00		-		7,520		3,360
- Dividends paid to non-controlling shareholder
of Sinovac Beijing		-2775		-		-802,151		-5,862,676
- Government grants received		2,154,186.00		1,585,289		2,394,766		1,592,925
- Repayment from (loan to) non-controlling shareholder of  Sinovac  Beijing		11666		-				3,397,522
Repayment from (loan to) non-controlling shareholder of  Sinovac  Dalian		-		-		3,189,830
Net cash provided by financing activities		6,978,896		-284,499		17,329,920		612,927
Cash flows used in investing activities
- Restricted cash		-		-		-		-
- Proceeds from disposal of equipment		5,375		4,797		5,375		122,089
- Proceeds from redemption of short-term investments		-		-		0		1,544,759
- Purchase of short-term investments		-		-		-		-
- Prepayments for acquisition of equipment		254,966		-467,183		254,966		-467,183
- Acquisition of property, plant and equipment		-5,469,802		-6,346,012		-16,411,576		-14,989,876
Net cash provided (used) in investing activities		-5,209,461		-6,808,398		-16,151,235		-13,790,211
Exchange gain on cash and cash equivalents		674,334		602,319		2,029,101		1,942,863
Increase in cash and cash equivalents		8,919,550		10,087,440		-13,404,725		2,701,205
Cash and cash equivalents, beginning of period		81,962,420		94,199,255		104,286,695		101,585,490
Cash and cash equivalents, end of  period	$	90,881,970	$	104,286,695	$	90,881,970	$	104,286,695
Supplemental disclosure of cash flow information:
Cash paid for interest,net of amounts capitalized	$	256,256	$	242,504	$	749,500	$	455,851
Cash paid for income taxes	$	0	$	167,883	$	2,264,593	$	881,596
Supplemental schedule of non-cash activities:
Acquisition of property, plant and equipment included in accounts payable and accrued liabilities	$	3,788,804	$	9,124,751	$	3,788,004	$	9,124,751