Exhibit 99.1

FOR IMMEDIATE RELEASE

SUNOPTA ANNOUNCES THIRD QUARTER 2013 RESULTS

Record Third Quarter and Year-to-Date Revenues

Toronto, November 5, 2013 - SunOpta Inc. (“SunOpta” or “the Company”) (NASDAQ:STKL) (TSX:SOY), a leading global company focused on natural, organic and specialty foods, today announced financial results for the third quarter and first nine months ended September 28, 2013. All amounts are expressed in U.S. dollars and results are reported in accordance with U.S. GAAP, except where specifically noted.

Third Quarter 2013 Highlights

• Record third quarter revenues of $302.7 million, an increase of 8.4%
• Operating income¹ of $9.8 million, or 3.2% of revenues
• EBITDA¹ of $15.3 million, or 5.1% of revenues
• Adjusted earnings from continuing operations¹ of $4.8 million, or $0.07 per diluted common share
• GAAP earnings per diluted common share from continuing operations of $0.04 or $2.9 million, after accounting for non-cash impairment charges associated with a non-core investment in Opta Minerals Inc.

Year-to-date 2013 Highlights

• Record year-to-date revenues of $896.7 million, an increase of 9.2%
• Operating income¹ of $33.8 million, or 3.8% of revenues
• EBITDA¹ of $50.2 million, or 5.6% of revenues
• Adjusted earnings from continuing operations¹ of $17.1 million, or $0.25 per diluted common share
• GAAP loss per common share from continuing operations of $0.10 or $6.9 million, after accounting for non-cash impairment charges associated with non-core investments in Opta Minerals Inc. and Mascoma Corporation
  

  (all comparisons above are to the third quarter and first nine months of 2012)

“Our record revenues for the quarter and year-to-date periods demonstrate our ability to realize continued momentum in our core natural and organic foods business. We believe that interest in healthy eating is a key long term global trend and we are well positioned to capitalize on future industry growth,” commented Steve Bromley, Chief Executive Officer. “There was strong growth in our value added product offerings during the quarter, and with a number of our expansion projects now coming on line, we look forward to realizing the benefits of these expansions. Our margins in the quarter were negatively impacted by costs related to the start-up and commissioning of our specialty cocoa processing facility in the Netherlands and consumer product facility expansions, combined with continued processing challenges in our sunflower operations as well as the cyclical weakness in the steel and infrastructure segments within our non-core holding, Opta Minerals. We continue to explore strategic options for this non-core holding in support of our strategy of becoming a pure-play natural and organic foods company. Looking forward, our internal re-structuring and expansion efforts are progressing well, and while we expect costs associated with these efforts to continue for the next two quarters, we are confident that our re-structured food operations will allow us to simplify our operations, better serve our customers, and will lead to greater alignment between our structure and our strategies.”

Third Quarter 2013 Results

Revenues increased 8.4% to a record $302.7 million compared to $279.3 million in the third quarter of 2012. The increase in consolidated revenues was driven by continued growth in consumer packaged categories including re-sealable pouch products and aseptic beverages, increased demand and prices for internationally sourced organic raw materials, and higher sales volumes of industrial and food service fruit-based ingredients. Excluding the impact of a number of factors including commodity, currency and product rationalizations, revenues in SunOpta Foods increased approximately 10.4% and consolidated revenues increased approximately 8.0% versus the prior year.

Operating income¹ was $9.8 million, or 3.2% of revenues, compared to $12.7 million, or 4.5% of revenues in 2012. Operating income was negatively impacted by facility start-up and expansion costs within the International Foods Group and Consumer Products Group, low sunflower processing yields and by-product values in the Grains and Foods Group, as well as Opta Minerals which continued to face cyclical weakness in both the steel and infrastructure sectors and the cost of integrating recent acquisitions.

The Company reported earnings from continuing operations of $2.9 million, or $0.04 per diluted common share, compared to earnings from continuing operations of $5.7 million, or $0.09 per diluted common share for the third quarter of 2012. Included in the results for the third quarter is a non-cash charge of approximately $1.5 million after tax, or $0.02 per diluted common share, related to an impairment of goodwill recognized in the Company’s Opta Minerals operating segment. The third quarter also included other expenses related to severance, facility restructuring and long-lived asset write-downs of approximately $0.4 million after tax, or $0.01 per diluted common share.

Excluding the goodwill impairment and other expenses, adjusted earnings from continuing operations¹ in the third quarter of 2013 were $4.8 million, or $0.07 per diluted common share. In addition, earnings for the third quarter include the impact of approximately $2.6 million in pre-tax start-up, expansion and integration costs, or approximately $1.7 million after-tax and minority interest.

EBITDA¹ was $15.3 million compared to $17.8 million during the third quarter of 2012.

Year-to-date 2013 Results

Revenues increased 9.2% to a record $896.7 million compared to $821.0 million in the first nine months of 2012. The increase in consolidated revenues was driven by strong demand and increased prices for organic grains and feed products, continued growth in consumer packaged categories including aseptic beverages and re-sealable pouch products, increased demand and prices for internationally sourced organic raw materials, as well as higher sales within Opta Minerals as a result of recent acquisitions. Excluding the impact of a number of factors including commodity, currency and product rationalizations, revenues in SunOpta Foods increased approximately 8.2% and consolidated revenues increased approximately 6.5% versus the prior year.

Operating income¹ was $33.8 million, or 3.8% of revenues, as compared to $39.8 million, or 4.9% of revenues, in the first nine months of 2012. Operating earnings were negatively impacted by the factors previously noted related to facility start-up and expansion costs, sunflower processing yields and cyclical weakness at Opta Minerals, offset partially by improved results within the Company’s consumer products and ingredients operations.

The Company incurred a loss from continuing operations of $6.9 million, or $0.10 per common share in the first nine months of 2013, compared to earnings from continuing operations of $18.6 million, or $0.28 per diluted common share, for the first nine months of 2012. Included in the results for the first nine months of 2013 were non-cash charges of approximately $23.0 million after tax, or $0.34 per diluted common share, reflecting the write-down of the Company’s non-core investments in Mascoma and goodwill impairment at Opta Minerals, as well as severance and long-lived asset write-downs which in aggregate amount to a charge to earnings of $0.9 million after tax or $0.01 per diluted common share. After adjusting for these items, adjusted earnings from continuing operations¹ in the first nine months of 2013 were $17.1 million, or $0.25 per diluted common share. In addition, earnings for the first nine months of 2013 include the impact of approximately $4.5 million in pre-tax start-up, expansion and integration costs, or approximately $2.8 million after-tax and minority interest.

EBITDA¹ was $50.2 million as compared to $54.8 million during the first three quarters of 2012.

Balance Sheet

The Company’s balance sheet remains strong and at September 28, 2013 reflected a net debt to equity ratio of 0.57 to 1.00. At September 28, 2013, the Company had total debt outstanding of $191.4 million, net debt of $184.6 million, total assets of $689.1 million, shareholders’ equity of $324.4 million and a net book value of $4.88 per outstanding share.

Conference Call

The Company plans to host a conference call at 10:00 A.M. Eastern Time on Wednesday, November 6, 2013 to discuss the results for the third quarter of 2013 and recent corporate developments. After opening remarks, there will be a question and answer period. This conference call can be accessed via a link at the Company’s website at www.sunopta.com. To listen to the live call over the Internet, please go to the Company’s website at least 15 minutes early to register, download and install any necessary audio software. Additionally, the call may be accessed with the toll free dial-in number (877) 312-9198 or international dial-in number (631) 291-4622. If you are unable to listen live, the conference call will be archived and can be accessed for approximately 90 days at the Company’s website.

¹See discussion of non-GAAP measures

About SunOpta Inc.

SunOpta Inc. is a leading global company focused on natural, organic and specialty foods products. The Company specializes in sourcing, processing and packaging of natural and organic food products, integrated from seed through packaged products; with a focus on strategically vertically integrated business models. The Company’s core natural and organic food operations focus on value-added grains, fiber and fruit based product offerings, supported by a global infrastructure. The Company has two non-core holdings, a 66.1% ownership position in Opta Minerals Inc., listed on the Toronto Stock Exchange, a producer, distributor, and recycler of environmentally friendly industrial materials; and a minority ownership position in Mascoma Corporation, an innovative biofuels company.

Forward-Looking Statements

Certain statements included in this press release may be considered “forward-looking statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities legislation, which are based on information available to us on the date of this release. These forward-looking statements include, but are not limited to, our belief that healthy eating is a key long term global trend and that we are well positioned to capitalize on future industry growth. The terms and phrases “believe”, “look forward”, “continued”, “growing”, “leveraging” and other similar terms and phrases are intended to identify these forward looking statements. Forward looking statements are based on information available to us on the date of this release and are based on estimates and assumptions made by the Company in light of its experience and its perception of historical trends, current conditions and expected future developments as well as other factors the Company believes are appropriate in the circumstances including, but not limited to, general economic conditions, consumer interest in health and wellness, product pricing levels, current customer demand, planned facility and operational expansions, competitive intensity, cost rationalization and product development initiatives. Whether actual timing and results will agree with expectations and predications of the Company is subject to many risks and uncertainties including, but not limited to, global economic conditions, consumer spending patterns and changes in market trends, decreases in customer demand, potential failure of product development, working capital management and continuous improvement initiatives, availability and pricing of raw materials and supplies, potential covenant breaches under our credit facilities and other risks described from time to time under "Risk Factors" in the Company's Annual Report on Form 10-K and its Quarterly Reports on Form 10-Q (available at www.sec.gov). Consequently all forward-looking statements made herein are qualified by these cautionary statements and there can be no assurance that the actual results or developments anticipated by the Company will be realized.

For further information, please contact:

SunOpta Inc.

Steve Bromley, CEO
Robert McKeracher, Vice President & CFO
Susan Wiekenkamp, Information Officer
Tel: 905-455-2528, ext 103
susan.wiekenkamp@sunopta.com
Website: www.sunopta.com

SunOpta Inc.
Consolidated Statements of Operations
For the quarter ended September 28, 2013 and September 29, 2012
Unaudited
(Expressed in thousands of U.S. dollars, except per share amounts)

SunOpta Inc.
Consolidated Statements of Operations
For the three quarters ended September 28, 2013 and September 29, 2012
Unaudited
(Expressed in thousands of U.S. dollars, except per share amounts)

SunOpta Inc.
Consolidated Balance Sheets
As at September 28, 2013 and December 29, 2012
Unaudited
(Expressed in thousands of U.S. dollars)

SunOpta Inc.  
Consolidated Statements of Cash Flows 
For the quarter ended September 28, 2013 and September 29, 2012
Unaudited
(Expressed in thousands of U.S. dollars)

SunOpta Inc.  
Consolidated Statements of Cash Flows 
For the three quarters ended September 28, 2013 and September 29, 2012
Unaudited
(Expressed in thousands of U.S. dollars)

SunOpta Inc.
Segmented Information 
For the quarter ended September 28, 2013 and September 29, 2012
Unaudited
(Expressed in thousands of U.S. dollars)

SunOpta Foods has the following segmented reporting:

SunOpta Foods has the following segmented reporting:

(Segment operating income (loss) is defined as “Earnings from continuing operations before the following” excluding the impact of “Other expense, net” and “Goodwill impairment”) 

SunOpta Inc.
Segmented Information 
For the three quarters ended September 28, 2013 and September 29, 2012
Unaudited
(Expressed in thousands of U.S. dollars)

SunOpta Foods has the following segmented reporting:

SunOpta Foods has the following segmented reporting:

(Segment operating income (loss) is defined as “Earnings from continuing operations before the following” excluding the impact of “Other expense, net” and “Goodwill impairment”)

¹Non-GAAP Measures

In addition to reporting financial results in accordance with generally accepted accounting principles (“GAAP”), the Company provides information regarding Operating Income and Earnings before interest, taxes, depreciation and amortization (“EBITDA”) as additional information about its operating results, which are not measures in accordance with GAAP. The Company believes that these non-GAAP measures assist investors in comparing performance across reporting periods on a consistent basis by excluding items that are not indicative of the Company’s core operating performance. The non-GAAP measures of Operating Income and EBITDA should not be considered in isolation or as a substitute for performance measures calculated in accordance with GAAP.

The Company defines Operating Income as “Earnings from continuing operations before the following” excluding the impact of “Other expense, net” and “Goodwill impairment” and EBITDA as Operating Income plus depreciation and amortization. The following is a tabular presentation of Operating Income and EBITDA, including reconciliation to GAAP earnings, which the Company believes to be the most directly comparable GAAP financial measure:

The Company also reported Adjusted earnings from continuing operations and Adjusted earnings from continuing operations per diluted share for the quarter and three quarters ended September 28, 2013. Adjusted earnings from continuing operations and Adjusted earnings from continuing operations per diluted share are also non-GAAP financial measures. During the quarter and three quarters ended September 28, 2013, the Company recognized specific charges that we do not believe are reflective of normal business operations. We have excluded the impairment loss on our investment in Mascoma, an impairment of goodwill recognized in our Opta Minerals operating segment, as well as severance, facility restructuring and long-lived asset write-downs all reported in “Other expense, net” to arrive at Adjusted earnings from continuing operations and Adjusted earnings from continuing operations per diluted share. The following is a tabular presentation of Adjusted earnings from continuing operations and Adjusted earnings from continuing operations per diluted share, including a reconciliation to GAAP Earnings (loss) attributable to SunOpta Inc. and GAAP Earnings (loss) attributable to SunOpta Inc. on a per diluted share basis, which the Company believes to be the most directly comparable GAAP financial measures.

Following is a calculation of our Adjusted earnings from continuing operations and Adjusted earnings from continuing operations per diluted share for the quarter and three quarters ended September 28, 2013.