The shares were offered and sold pursuant to a prospectus supplement dated September 18, 2009 to NTIC's registration statement on Form S-3 (File No. 333-153891), including a base prospectus dated January 16, 2009, registering up to $50,000,000 of NTIC equity securities and the offering thereof from time to time in accordance with Rule 415 under the Securities Act of 1933, as amended, which incorporates by reference documents which NTIC has filed or will file in accordance with the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder.

Next Generation Equity Research, LLC acted as the exclusive placement agent for the transaction.

This announcement is neither an offer to sell nor a solicitation of an offer to buy any shares of common stock of NTIC. No offer, solicitation or sale will be made in any jurisdiction in which such offer, solicitation or sale is unlawful.

About Northern Technologies International Corporation

Northern Technologies International Corporation develops and markets proprietary environmentally beneficial products and technical services either directly or via a network of joint ventures and independent distributors in over 50 countries to the automotive, electronics, electrical, mechanical, military and retail consumer markets. NTIC's primary business is corrosion prevention. NTIC has been selling its proprietary ZERUST(R) and EXCOR(R) rust and corrosion inhibiting products and services for over 30 years. NTIC also offers worldwide on-site technical consulting for rust and corrosion issues. NTIC's technical service consultants work directly with the end users of NTIC's products to analyze their specific needs and develop systems to meet their technical requirements. Most recently, NTIC has begun to partner with major oil and gas companies to sell NTIC's corrosion inhibiting technology to the oil and gas industry. In addition, NTIC markets a new product line of compounds and finished products based on a portfolio of proprietary bio-plastic technologies under the Natur- Tec(R) brand. NTIC also markets and sells plastic waste to fuel conversion technology through its joint venture, Polymer Energy, LLC.

The NTIC logo, Zerust(R), EXCOR(R), Natur-Tec(R) and Polymer Energy(TM) are trademarks of Northern Technologies International Corporation, its subsidiaries and/or joint ventures, registered in the U.S. and other countries. All other trademarks and trade names referred to in this release are the property of their respective owners.

The Northern Technologies International Corporation logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=5481

Forward-Looking Statements

Statements contained in this release that are not historical information are forward-looking statements as defined within the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about NTIC's use of the net proceeds from the registered direct offering and such other statements which can be identified by words such as "expect," "anticipate," "estimate," "will," "would," "should," "potential," "outlook" or words of similar meaning and any other statements that are not historical facts. Such forward-looking statements are based upon the current beliefs and expectations of NTIC's management and are inherently subject to risks and uncertainties that could cause actual results to differ materially from those projected or implied. Such potential risks and uncertainties include, but are not limited to, in no particular order: delays in the completion of the offering or the failure to complete the offering; NTIC's dependence on the success of its joint ventures and technical fees and dividend distributions that NTIC receives from them; NTIC's relationships with its joint ventures and its ability to maintain those relationships; risks associated with NTIC's international operations; exposure to fluctuations in foreign currency exchange rates; the current worldwide economic recession, and its effect in particular on the U.S. automotive industry; the size and level of growth in NTIC's markets; NTIC's investments in research and development efforts; acceptance of existing and new products; increased competition; the success of NTIC's emerging new businesses; the costs and effects of complying with changes in tax, fiscal, government and other regulatory policies; and NTIC's reliance on its intellectual property rights and the absence of infringement of the intellectual property rights of others. More detailed information on these and additional factors which could affect NTIC's operating and financial results is described in the company's filings with the Securities and Exchange Commission, including its most recent annual report on Form 10-K and subsequent quarterly reports on Form 10-Q. NTIC urges all interested parties to read these reports to gain a better understanding of the many business and other risks that the company faces. Additionally, NTIC undertakes no obligation to publicly release the results of any revisions to these forward-looking statements, which may be made to reflect events or circumstances occurring after the date hereof or to reflect the occurrence of unanticipated events.

This news release was distributed by GlobeNewswire, www.globenewswire.com

SOURCE: Northern Technologies International Corporation

CONTACT:  Northern Technologies International
Matthew Wolsfeld, Chief Financial Officer
763-225-6600
Porter, LeVay & Rose, Inc.
Michael J. Porter, President
212-564-4700

Prof. Ramani Narayan, University Distinguished Professor at MSU and developer of PLA technology for Cargill Inc., will be collaborating with NTIC in this work. Prof. Narayan stated, "MSU and NTIC have worked together in the past to successfully commercialize biodegradable and biobased products. The NSF projects will reinforce stronger ties among the two organizations and serve as a classic example of university-industry symbiosis." NTIC, in particular, will benefit from the specific expertise that Prof. Narayan brings to the table in the area of bioplastics.

G. Patrick Lynch, President and Chief Executive Officer of Northern Technologies International, said, "NTIC is very pleased to have been recognized by the National Science Foundation with these grants. We are also exceptionally proud and honored that Prof. Ramani Narayan, who is such a well known thought leader in the field of bio-plastics and other bio-based technologies, is eager to be working with our R&D team on these new projects well. We have great expectations for these technologies and believe that NTIC's ties with Michigan State University will only grow stronger based on our joint successes."

NTIC recently signed 14 new distributors and independent manufacturer's representatives to secure new business for its Natur-Tec(R) bio-plastics products. The NSF grants along with a strengthened sales force are expected to increase NTIC's sales revenue and enhance the company's position as a leading manufacturer of innovative bioplastics products.

About Northern Technologies International Corporation

Northern Technologies International Corporation develops and markets proprietary environmentally beneficial products and technical services either directly or via a network of joint ventures and independent distributors in over 50 countries to the automotive, electronics, electrical, mechanical, military and retail consumer markets. NTIC's primary business is corrosion prevention. NTIC has been selling its proprietary Zerust(R) and EXCOR(R) rust and corrosion inhibiting products and services for over 30 years. NTIC also offers worldwide on-site technical consulting for rust and corrosion issues. NTIC's technical service consultants work directly with the end users of NTIC's products to analyze their specific needs and develop systems to meet their technical requirements. Most recently, NTIC has begun to partner with major oil and gas companies to sell NTIC's corrosion inhibiting technology to the oil and gas industry. In addition, NTIC markets a new product line of compounds and finished products based on a portfolio of proprietary bio-plastic technologies under the Natur-Tec(R) brand. NTIC also markets and sells plastic waste to fuel conversion technology through its joint venture, Polymer Energy, LLC.

The NTIC logo, Zerust(R), EXCOR(R), Natur-Tec(R) and Polymer Energy(TM) are trademarks of Northern Technologies International Corporation, its subsidiaries and/or joint ventures, registered in the U.S. and other countries. All other trademarks and trade names referred to in this release are the property of their respective owners.

The Northern Technologies International Corporation logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=5481

Forward-Looking Statements

Statements contained in this release that are not historical information are forward-looking statements as defined within the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about the timing of the completion of the registered direct offering and NTIC's use of the net proceeds from the offering and such other statements which can be identified by words such as "expect," "anticipate," "estimate," "will," "would," "should," "potential," "outlook" or words of similar meaning and any other statements that are not historical facts. Such forward-looking statements are based upon the current beliefs and expectations of NTIC's management and are inherently subject to risks and uncertainties that could cause actual results to differ materially from those projected or implied. Such potential risks and uncertainties include, but are not limited to, in no particular order: delays in the completion of the offering or the failure to complete the offering; NTIC's dependence on the success of its joint ventures and technical fees and dividend distributions that NTIC receives from them; NTIC's relationships with its joint ventures and its ability to maintain those relationships; risks associated with NTIC's international operations; exposure to fluctuations in foreign currency exchange rates; the current worldwide economic recession, and its effect in particular on the U.S. automotive industry; the size and level of growth in NTIC's markets; NTIC's investments in research and development efforts; acceptance of existing and new products; increased competition; the success of NTIC's emerging new businesses; the costs and effects of complying with changes in tax, fiscal, government and other regulatory policies; and NTIC's reliance on its intellectual property rights and the absence of infringement of the intellectual property rights of others. More detailed information on these and additional factors which could affect NTIC's operating and financial results is described in the company's filings with the Securities and Exchange Commission, including its most recent annual report on Form 10-K and subsequent quarterly reports on Form 10-Q. NTIC urges all interested parties to read these reports to gain a better understanding of the many business and other risks that the company faces. Additionally, NTIC undertakes no obligation to publicly release the results of any revisions to these forward-looking statements, which may be made to reflect events or circumstances occurring after the date hereof or to reflect the occurrence of unanticipated events.

This news release was distributed by GlobeNewswire, www.globenewswire.com

SOURCE: Northern Technologies International Corporation

CONTACT:  Northern Technologies International Corporation
Matthew Wolsfeld, Chief Financial Officer
763-225-6600

He continued, "The oil and gas industry is coming to appreciate the full potential of our Zerust(r) Oil & Gas corrosion protection technologies. During fiscal 2009, we secured both commercial as well as research and development contracts with Petroleo Brasileiro S.A. - "Petrobras" (NYSE:PBR) in Brazil, and have either commenced or established plans for trial projects with several other oil and gas companies.

He added, "We also continue to make progress with our Natur-Tec(r) bio-plastic products as we entered into several distributor and independent manufacturer's representative arrangements and received modest initial orders from a few large companies over the past several months. Finally, we are pleased to announce that our Polymer Energy, LLC joint venture has shipped a third Polymer Energy(tm) machine to the Hua Hin Municipality in Thailand. The need to address the growing worldwide plastic waste pollution problem is dramatically increasing the interest in this technology. All of these developments provide us with guarded optimism for fiscal 2010."

Some business highlights for fiscal 2009 and most recently fourth quarter include:

 * NTIC secured initial commercial and R&D contracts and/or field
   trials with many new clients including  Petroleo Brasileiro S.A.,
   for Zerust(r) Oil & Gas;

 * NTIC signed 14 new distributors and independent manufacturer's
   representatives and secured initial orders from several new
   customers for its Natur-Tec(r) bio-plastics business.  These
   developments are particularly encouraging following several initial
   setbacks that NTIC believes were influenced primarily by the
   effects of the economic recession;

 * NTIC's Polymer Energy, LLC joint venture shipped the third
   commercial Polymer Energy(tm) machine from its plant in Chennai,
   India to Thailand during fourth quarter. These machines, which sell
   for approximately US $1.5 million to $1.8 million each, convert
   plastic waste into a mixture of diesel, gasoline and mid-
   distillates. Installation and commissioning of this machine is
   scheduled to be completed by the end of October 2009;

 * NTIC continued to benefit from the cost reduction measures
   instituted during its second quarter of fiscal 2009, which resulted
   in an approximate 30 percent reduction in overall operating
   expenses and joint venture support expenses as compared to first
   quarter of fiscal 2009;

 * Recent strength in NTIC's core Zerust(r) rust and corrosion
   inhibiting products provide management with some confidence that a
   possible broader economic recovery is gaining some momentum.

For the fourth quarter ended August 31, 2009, NTIC expects its net sales from its North American operations to range between $1.6 million and $1.9 million and to incur a net loss of between $(450,000) to $(825,000), or between $(0.12) and $(0.22) per share. This compares with current analyst estimates of $1.7 million in net sales and a net loss of $(600,000), or $(0.15) per share, and last year's fourth quarter of fiscal 2009 net sales of $3.2 million, and net income of $448,000, or $0.11 per diluted share. NTIC expects to report working capital of approximately $4.6 million at August 31, 2009, including approximately $395,000 in cash and cash equivalents. As of August 31, 2009, NTIC had approximately $1.1 million of borrowings under its $2.3 million demand line of credit.

Matthew C. Wolsfeld, Chief Financial Officer of NTIC said, "While we expect our fourth quarter operating results to be on par with our third quarter fiscal 2009 results, we have made significant progress in our oil and gas business and other emerging businesses during fiscal 2009 and believe we will begin to realize the potential of such businesses as well as continue to benefit from the cost reduction measures we recently instituted into fiscal 2010 and beyond."

Mr. Lynch concluded, "Not only do we enter fiscal 2010 with a more optimistic outlook, we are also proud that our expanding technological base is expected to make a growing beneficial impact on the global environment. As the economy continues to stabilize in the coming months we anticipate our growth will accelerate in fiscal 2011 and beyond."

Because NTIC does not yet have financial results from its 29 corporate joint ventures, it is unable to provide additional details of its financial expectations at this time. The company expects to report its audited fourth quarter and full year fiscal 2009 results by mid-November, and does not intend to provide preliminary quarterly guidance going forward.

About Northern Technologies International Corporation

Northern Technologies International Corporation develops and markets proprietary environmentally beneficial products and technical services either directly or via a network of joint ventures and independent distributors in over 50 countries to the automotive, electronics, electrical, mechanical, military and retail consumer markets. NTIC's primary business is corrosion prevention. NTIC has been selling its proprietary ZERUST(r) and EXCOR(r) rust and corrosion inhibiting products and services for over 30 years. NTIC also offers worldwide on-site technical consulting for rust and corrosion issues. NTIC's technical service consultants work directly with the end users of NTIC's products to analyze their specific needs and develop systems to meet their technical requirements. Most recently, NTIC has begun to partner with major oil and gas companies to sell NTIC's corrosion inhibiting technology to the oil and gas industry. In addition, NTIC markets a new product line of compounds and finished products based on a portfolio of proprietary bio-plastic technologies under the Natur- Tec(r) brand. NTIC also markets and sells plastic waste to fuel conversion technology through its joint venture, Polymer Energy, LLC.

The Northern Technologies International Corporation logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=5481

The NTIC logo, Zerust(r), EXCOR(r), Natur-Tec(r) and Polymer Energy(tm) are trademarks of Northern Technologies International Corporation, its subsidiaries and/or joint ventures, registered in the U.S. and other countries. All other trademarks and trade names referred to in this release are the property of their respective owners.

Forward-Looking Statements

Statements contained in this release that are not historical information are forward-looking statements as defined within the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about NTIC's preliminary financial results for the fourth quarter of fiscal 2009 and fiscal 2009; future market demand for and sales of NTIC's products and services; the level of activity and future success of NTIC's other emerging new businesses, including its Natur-Tec(r) bio-plastic products, its process technology that converts plastic waste into fuel and the application of its corrosion inhibiting technology into the oil and gas industry; the effect of NTIC's recent cost control measures; the anticipated timing for an economic recovery and such other statements which can be identified by words such as "expect," "anticipate," "estimate," "will," "would," "should," "potential," "outlook" or words of similar meaning and any other statements that are not historical facts. Such forward-looking statements are based upon the current beliefs and expectations of NTIC's management and are inherently subject to risks and uncertainties that could cause actual results to differ materially from those projected or implied. Such potential risks and uncertainties include, but are not limited to, in no particular order: NTIC's dependence on the success of its joint ventures and technical fees and dividend distributions that NTIC receives from them; NTIC's relationships with its joint ventures and its ability to maintain those relationships; risks associated with NTIC's international operations; exposure to fluctuations in foreign currency exchange rates; the current worldwide economic recession, and its effect in particular on the U.S. automotive industry; the size and level of growth in NTIC's markets; NTIC's investments in research and development efforts; acceptance of existing and new products; increased competition; the success of NTIC's emerging new businesses; the costs and effects of complying with changes in tax, fiscal, government and other regulatory policies; and NTIC's reliance on its intellectual property rights and the absence of infringement of the intellectual property rights of others. More detailed information on these and additional factors which could affect NTIC's operating and financial results is described in the company's filings with the Securities and Exchange Commission, including its most recent annual report on Form 10-K and subsequent quarterly reports on Form 10-Q. NTIC urges all interested parties to read these reports to gain a better understanding of the many business and other risks that the company faces. Additionally, NTIC undertakes no obligation to publicly release the results of any revisions to these forward-looking statements, which may be made to reflect events or circumstances occurring after the date hereof or to reflect the occurrence of unanticipated events.

This news release was distributed by GlobeNewswire, www.globenewswire.com

SOURCE: Northern Technologies International Corporation

CONTACT:  Northern Technologies International Corporation
Matthew Wolsfeld, Chief Financial Officer NTIC
(763) 225-6600

Next Generation Equity Research, LLC acted as the exclusive placement agent for the transaction.

A shelf registration statement relating to the shares of common stock issued in the offering has been filed with the Securities and Exchange Commission (the "SEC") and has been declared effective. A prospectus supplement relating to the offering will be filed by NTIC with the SEC. Copies of the prospectus supplement and accompanying base prospectus may be obtained by contacting Northern Technologies International Corporation, 4201 Woodland Road, Circle Pines, Minnesota 55014, or by accessing it on the SEC's website at www.sec.gov. This announcement is neither an offer to sell nor a solicitation of an offer to buy any shares of common stock of NTIC. No offer, solicitation or sale will be made in any jurisdiction in which such offer, solicitation or sale is unlawful.

About Northern Technologies International Corporation

Northern Technologies International Corporation develops and markets proprietary environmentally beneficial products and technical services either directly or via a network of joint ventures and independent distributors in over 50 countries to the automotive, electronics, electrical, mechanical, military and retail consumer markets. NTIC's primary business is corrosion prevention. NTIC has been selling its proprietary ZERUST(R) and EXCOR(R) rust and corrosion inhibiting products and services for over 30 years. NTIC also offers worldwide on-site technical consulting for rust and corrosion issues. NTIC's technical service consultants work directly with the end users of NTIC's products to analyze their specific needs and develop systems to meet their technical requirements. Most recently, NTIC has begun to partner with major oil and gas companies to sell NTIC's corrosion inhibiting technology to the oil and gas industry. In addition, NTIC markets a new product line of compounds and finished products based on a portfolio of proprietary bio-plastic technologies under the Natur-Tec(R) brand. NTIC also markets and sells plastic waste to fuel conversion technology through its joint venture, Polymer Energy, LLC.

The NTIC logo, Zerust(R), EXCOR(R), Natur-Tec(R) and Polymer Energy(TM) are trademarks of Northern Technologies International Corporation, its subsidiaries and/or joint ventures, registered in the U.S. and other countries. All other trademarks and trade names referred to in this release are the property of their respective owners.

The Northern Technologies International Corporation logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=5481

Forward-Looking Statements

Statements contained in this release that are not historical information are forward-looking statements as defined within the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about the timing of the completion of the registered direct offering and NTIC's use of the net proceeds from the offering and such other statements which can be identified by words such as "expect," "anticipate," "estimate," "will," "would," "should," "potential," "outlook" or words of similar meaning and any other statements that are not historical facts. Such forward-looking statements are based upon the current beliefs and expectations of NTIC's management and are inherently subject to risks and uncertainties that could cause actual results to differ materially from those projected or implied. Such potential risks and uncertainties include, but are not limited to, in no particular order: delays in the completion of the offering or the failure to complete the offering; NTIC's dependence on the success of its joint ventures and technical fees and dividend distributions that NTIC receives from them; NTIC's relationships with its joint ventures and its ability to maintain those relationships; risks associated with NTIC's international operations; exposure to fluctuations in foreign currency exchange rates; the current worldwide economic recession, and its effect in particular on the U.S. automotive industry; the size and level of growth in NTIC's markets; NTIC's investments in research and development efforts; acceptance of existing and new products; increased competition; the success of NTIC's emerging new businesses; the costs and effects of complying with changes in tax, fiscal, government and other regulatory policies; and NTIC's reliance on its intellectual property rights and the absence of infringement of the intellectual property rights of others. More detailed information on these and additional factors which could affect NTIC's operating and financial results is described in the company's filings with the Securities and Exchange Commission, including its most recent annual report on Form 10-K and subsequent quarterly reports on Form 10-Q. NTIC urges all interested parties to read these reports to gain a better understanding of the many business and other risks that the company faces. Additionally, NTIC undertakes no obligation to publicly release the results of any revisions to these forward-looking statements, which may be made to reflect events or circumstances occurring after the date hereof or to reflect the occurrence of unanticipated events.

This news release was distributed by GlobeNewswire, www.globenewswire.com

SOURCE: Northern Technologies International Corporation

CONTACT:  Northern Technologies International Corporation
Matthew Wolsfeld, Chief Financial Officer
763-225-6600
Porter, LeVay & Rose, Inc.
Michael J. Porter, President
212-564-4700