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Investor Home	NASDAQ:CDTI $1.21   + 0.11 Jul 30, 2010 3:15 PM ET
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Clean Diesel Technologies (NASDAQ: CDTI) is a cleantech company providing sustainable solutions to reduce emissions, increase energy efficiency and lower the carbon intensity of on- and off-road engine applications. Clean Diesel's patented technologies and products allow manufacturers and operators to comply with increasingly strict regulatory emissions and air quality standards, while also improving fuel economy and power. The Company's solutions, which are in commercial use worldwide, significantly reduce emissions formed by the combustion of fossil fuels and biofuels, including particulate matter (PM), nitrogen oxides (NOx), carbon monoxide and hydrocarbons. Clean Diesel solutions also reduce carbon dioxide (CO₂) emissions, a key greenhouse gas associated with global climate change.

Clean Diesel develops and manages intellectual property from original concept to full-scale commercial deployment. Its offerings include ARIS^® Selective Catalytic Reduction (SCR); the patented combination of SCR and Exhaust Gas Recirculation; hydrocarbon injection for emissions control applications; Platinum Plus^® Fuel-Borne Catalyst; the Purifier™ family of particulate filter systems; and its Wire Mesh Filter particulate filter technologies. The Company was founded in 1995 and is headquartered in Stamford, Connecticut. A wholly owned subsidiary, Clean Diesel International, LLC, is based in London, England. The company is incorporated in the United States of America.

Clean Diesel Technologies, Inc. is a publically traded company, trading on the NASDAQ Capital Market under the symbol CDTI and the Alternative Investment Market (AIM) of the London Stock Exchange under the symbol CDT.

Please download our 2008 Annual Report

The information detailed in the Investor section of the website is in compliance with the rules and regulations of the Securities and Exchange Commission and Rule 26 of the Aim Rules for Companies. Clean Diesel Technologies, Inc. is not incorporated in the UK; therefore, the rights of stockholders may be different from the rights of stockholders in a UK incorporated company.

For additional information and all notifications Clean Diesel Technologies, Inc made in the past 12 months, please see our press releases and 10Q & 10K filings with the SEC.

Significant Stockholders
Beneficial Owner	Percentage Beneficially Owned
Ruffer LLP	14.6%
Hawkwood Fund Limited	5.6%
Avenir Finances S.A.	5.5%
Positive Securities Limited (David M. Hunter)	5.2%
Duckworth Esq.	4.9%
Channel Hotels and Properties Limited	4.8%
Fuel Tech, Inc.	4.5%
Waltham Forest Friendly Society	4.2%
Kanis SA	4.2%
Udaset Holdings Limited	3.7%
Ram Ltd.	3.6%
All Directors and Officers as a Group (10 persons)	6.5%

Number of AIM Securities in Issue
Total (as of December 31, 2008): 8,138,304

Percentage of Shares not in Public Hands
Approximately 21.6%

Restrictions on Transfer of AIM Listed Shares
All outstanding shares are eligible to be freely traded and all stockholders have been advised how to have restrictive legends removed.

Independent Auditors	Eisner LLP New York, NY
Transfer Agent and Registrar	American Stock Transfer & Trust 59 Maiden Lane New York NY10038 Tel: +1 212-936-5100 Capita IRG (CI) Limited PO Box 328 Landefdumarche Chambers Landefdumarche Vale Guernsey GY1 3TY Channel Islands

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