<SUBMISSION>
<ACCESSION-NUMBER>0001193125-11-331369
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>3
<PERIOD>20111201
<ITEMS>5.02
<ITEMS>9.01
<FILING-DATE>20111206
<DATE-OF-FILING-DATE-CHANGE>20111206
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>CLEAN DIESEL TECHNOLOGIES INC
<CIK>0000949428
<ASSIGNED-SIC>3564
<IRS-NUMBER>061393453
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>001-33710
<FILM-NUMBER>111244567
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>4567 TELEPHONE ROAD
<STREET2>SUITE 206
<CITY>VENTURA
<STATE>CA
<ZIP>93003
<PHONE>805 639 9458
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>4567 TELEPHONE ROAD
<STREET2>SUITE 206
<CITY>VENTURA
<STATE>CA
<ZIP>93003
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>d265938d8k.htm
<DESCRIPTION>FORM 8-K
<TEXT>
<HTML><HEAD>
<TITLE>Form 8-K</TITLE>
</HEAD>
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 <P STYLE="line-height:0px;margin-top:0px;margin-bottom:0px;border-bottom:0.5pt solid #000000">&nbsp;</P>
<P STYLE="line-height:3px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P> <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>UNITED STATES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="3"><B>WASHINGTON, D.C. 20549 </B></FONT></P> <P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center>
<P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:10px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>FORM&nbsp;8-K
</B></FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>CURRENT REPORT </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="3"><B>Pursuant to Section&nbsp;13 or 15(d)&nbsp;of the </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>Securities Exchange Act
of 1934 </B></FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Date of report (Date of earliest event reported): <B>December&nbsp;1, 2011</B> </FONT></P>
<P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center> <P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:10px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="6"><B>CLEAN DIESEL TECHNOLOGIES, INC. </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2"><B>(Exact Name of Registrant as Specified in Charter) </B></FONT></P> <P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center>
<P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>DELAWARE</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>001-33710</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>06-1393453</B></FONT></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(State or Other Jurisdiction</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>of Incorporation)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Commission File Number)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(I.R.S. Employer</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="1"><B>Identification No.)</B></FONT></P></TD></TR>
<TR>
<TD HEIGHT="16" COLSPAN="3"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>4567 TELEPHONE ROAD, SUITE 206</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>VENTURA, CALIFORNIA</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>93003</B></FONT></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Address of Principal Executive Offices)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Zip Code)</B></FONT></TD></TR>
</TABLE> <P STYLE="margin-top:10px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(805) 639-9458 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:Times New Roman" SIZE="2">(Registrants telephone number, including area code) </FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">(Former name or former
address, if changed since last report) </FONT></P> <P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center>
<P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="margin-top:10px;margin-bottom:0px"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Check the appropriate box below if the Form&nbsp;8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: </FONT></P>
<P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425) </FONT></TD></TR></TABLE>
<P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12) </FONT></TD></TR></TABLE>
<P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pre-commencement communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17 CFR 240.14d-2(b)) </FONT></TD></TR></TABLE>
<P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pre-commencement communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act (17 CFR 240.13e-4(c)) </FONT></TD></TR></TABLE>
<P STYLE="font-size:8px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="line-height:0px;margin-top:0px;margin-bottom:0px;border-bottom:0.5pt solid #000000">&nbsp;</P>
<P STYLE="line-height:3px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P> <P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>

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<TD WIDTH="9%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Item&nbsp;5.02</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
</B></FONT></TD></TR></TABLE> <P STYLE="margin-top:10px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On December&nbsp;1, 2011, Charles F. Call, our President, Chief Executive Officer and member of the Board
of Directors (the &#147;Board&#148;), provided notice to our Board of his plan to retire as President and Chief Executive Officer in 2012. Mr.&nbsp;Call also notified the Board that he desired to remain a member of the Board following his
retirement. The Board has indicated that they intend to appoint Mr.&nbsp;Call to serve as Vice Chairman of the Board at the time of his retirement. The actual date of Mr.&nbsp;Call&#146;s departure as an employee of our company is subject to the
appointment by the Board of his successor. </FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On December&nbsp;6, 2011, Clean Diesel Technologies, Inc. issued a press release
regarding Mr.&nbsp;Call&#146;s planned retirement. A copy of the press release is attached as Exhibit 99.1 to this Current Report. </FONT></P> <P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="9%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Item&nbsp;9.01</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Financial Statements and Exhibits. </B></FONT></TD></TR></TABLE>
<P STYLE="margin-top:10px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">(c)&nbsp;Exhibits. </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>EXHIBIT&nbsp;INDEX </B></FONT></P> <P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD WIDTH="92%"></TD></TR>
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<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1px solid #000000;width:28pt"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Exhibit<BR>Number</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" STYLE="border-bottom:1px solid #000000"> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Description of Exhibits</B></FONT></P></TD></TR>


<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">99.1</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Press release dated December 6, 2011</FONT></TD></TR>
</TABLE>

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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>SIGNATURES </B></FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px; text-indent:4%"><FONT
STYLE="font-family:Times New Roman" SIZE="2">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. </FONT></P>
<P STYLE="font-size:10px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
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<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CLEAN DIESEL TECHNOLOGIES, INC.</B></FONT></TD></TR>
<TR>
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<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">December&nbsp;6, 2011</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">/s/&nbsp;Nikhil A. Mehta</FONT></TD></TR>
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<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Nikhil A. Mehta</FONT></TD></TR>
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<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Chief Financial Officer</FONT></TD></TR>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d265938dex991.htm
<DESCRIPTION>PRESS RELEASE
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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:ARIAL" SIZE="2"><B><U>EXHIBIT 99.1 </U></B></FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px">


<IMG SRC="g265938g14h75.jpg" ALT="LOGO">
 </P> <P STYLE="margin-top:10px;margin-bottom:0px"><FONT STYLE="font-family:ARIAL" SIZE="2"><B><I>FOR IMMEDIATE RELEASE </I></B></FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px" ALIGN="center"><FONT
STYLE="font-family:ARIAL" SIZE="2"><B><I>Clean Diesel Technologies, Inc. Announces Retirement </I></B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:ARIAL" SIZE="2"><B><I>of Chief Executive Officer in
2012 </I></B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:ARIAL" SIZE="2"><B><I>Charles F. Call to Remain in Office until Successor is Appointed </I></B></FONT></P>
<P STYLE="margin-top:10px;margin-bottom:0px"><FONT STYLE="font-family:ARIAL" SIZE="2"><B>Ventura, CA &#150; </B>December&nbsp;6, 2011 &#151; Clean Diesel Technologies, Inc. (NASDAQ:CDTI) (&#147;Clean Diesel&#148;), a cleantech emissions reduction
company, announced today that Charles F. Call has informed the Board of Directors of his plan to retire as President and Chief Executive Officer. Mr.&nbsp;Call, age 64, will continue to serve until a successor has been named and the Chief Executive
Officer transition is complete. Mr.&nbsp;Call will remain a member of the Board of Directors, and the Board will appoint him as Vice Chairman at the time of his retirement. Mr.&nbsp;Call has served as President and Chief Executive Officer of Clean
Diesel since October 2010, when Clean Diesel acquired Catalytic Solutions, Inc. (&#147;CSI&#148;). Prior to the business combination, Mr.&nbsp;Call had been with CSI for six years. </FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px"><FONT
STYLE="font-family:ARIAL" SIZE="2">Clean Diesel has retained a nationally recognized executive recruiting firm, to advise the Board on potential candidates and has commenced a comprehensive internal and external search for a new Chief Executive
Officer. In the mean time, Mr.&nbsp;Call will remain in his current role to ensure leadership stability and continuity for Clean Diesel. </FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px"><FONT STYLE="font-family:ARIAL" SIZE="2">&#147;Over the
past several years I have had the honor of playing a role in CSI&#146;s, and now Clean Diesel&#146;s, evolution into a leading manufacturer and distributor of emissions control systems and products,&#148; said Charles F. Call. &#147;We have achieved
this due to the support of our employees, customers, and investors, and I would like to take this opportunity to thank them. We have built a strong brand and a culture of value creation and dependability, and I am confident that the company is well
positioned for its next phase of growth and development. I look forward to working with the Board of Directors and my successor to ensure a seamless transition.&#148; </FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px"><FONT
STYLE="font-family:ARIAL" SIZE="2">&#147;This is bittersweet for all of us at Clean Diesel. On behalf of the Board, I would like to thank Charlie for his service and leadership over the past seven years. He leaves behind a great legacy of integrity
and success,&#148; said Alexander Ellis, Chairman of the Board of Directors. &#147;He strategically diversified CSI, driving CSI&#146;s purchase of our Engine Control Systems subsidiary, which not only broadened our line of heavy duty diesel
products and solutions globally, but also significantly leveraged our core catalyst technologies.&nbsp;He successfully engineered the crucial business combination of CSI with Clean Diesel last year.&nbsp;And most important, he has built a terrific
senior leadership team, which works closely with the Board on strategy and execution. It is time to put in motion a thoughtful plan of succession and the Board is committed to carrying out a thorough search to identify the right candidate to lead
our company into the future, and will complete the search as expeditiously as possible. The search process </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:ARIAL" SIZE="2">Clean Diesel
Technologies, Inc. * 4567 Telephone Road, Suite 206 * Ventura CA 93003 * 805-639-94581 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:ARIAL" SIZE="2">www.cdti.com </FONT></P>


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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:ARIAL" SIZE="2">
will include a full review of internal and external candidates. We are pleased that Charlie has agreed to serve until a successor is appointed and we intend to appoint him as Vice Chairman and a
member of the Board thereafter. Charlie is a seasoned executive with the right leadership experience to ensure a smooth transition, and to continue to execute on our strategic plan.&#148; </FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px"><FONT
STYLE="font-family:ARIAL" SIZE="2"><B><U>About Clean Diesel Technologies, Inc. </U></B></FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px;padding-bottom:0px;"><FONT STYLE="font-family:ARIAL" SIZE="2">Clean Diesel is a vertically integrated
global manufacturer and distributor of emissions control systems and products, focused on the heavy duty diesel and light duty vehicle markets. Clean Diesel utilizes its proprietary patented Mixed Phase Catalyst (MPC<FONT
STYLE="font-family:ARIAL" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">&reg;</SUP></FONT>) technology, as well as its ARIS<FONT STYLE="font-family:ARIAL" SIZE="1"><SUP
STYLE="vertical-align:baseline; position:relative; bottom:.8ex">&reg;</SUP></FONT> selective catalytic reduction, Platinum
Plus<FONT STYLE="font-family:ARIAL" SIZE="1"><SUP STYLE="vertical-align:baseline; position:relative; bottom:.8ex">&reg;</SUP></FONT> fuel-borne catalyst, and other technologies to provide high-value sustainable solutions to reduce emissions and
lower the carbon intensity of on- and off-road engine applications. Clean Diesel is headquartered in Ventura, California and currently has operations in the U.S., Canada, U.K., France, Japan and Sweden. For more information, please visit
www.cdti.com. </FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:ARIAL" SIZE="2">### </FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px"><FONT STYLE="font-family:ARIAL" SIZE="2"><B>Contact
Information: </B></FONT></P> <P STYLE="margin-top:10px;margin-bottom:0px"><FONT STYLE="font-family:ARIAL" SIZE="2">Kristi Cushing, Investor Relations Manager </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
STYLE="font-family:ARIAL" SIZE="2">Tel: &#43;1 (805)&nbsp;639-9458 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:ARIAL" SIZE="2">Email: kcushing@cdti.com </FONT></P>
 <p STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:ARIAL" SIZE="2">Clean Diesel
Technologies, Inc. * 4567 Telephone Road, Suite 206 * Ventura CA 93003 * 805-639-94582 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:ARIAL" SIZE="2">www.cdti.com </FONT></P>

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