<SUBMISSION>
<ACCESSION-NUMBER>0000950123-11-027809
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20110317
<ITEMS>5.02
<FILING-DATE>20110322
<DATE-OF-FILING-DATE-CHANGE>20110322
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>CLEAN DIESEL TECHNOLOGIES INC
<CIK>0000949428
<ASSIGNED-SIC>2810
<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>11704557
</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>c14491e8vk.htm
<DESCRIPTION>FORM 8-K
<TEXT>
<HTML>
<HEAD>
<TITLE>Form 8-K</TITLE>
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style="width: 7.2in; font-family: 'Times New Roman',Times,serif; margin-left: 0.25in">
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<DIV
style="border-bottom: black 1pt solid; width: 100%; font-size: 1pt">&nbsp;</DIV>

<P style="font-size: 14pt" align="center"><B>UNITED STATES<BR>
SECURITIES AND
EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P style="font-size: 18pt" align="center"><B>FORM 8-K</B>

<P style="font-size: 12pt" align="center"><B>CURRENT REPORT<BR>
Pursuant to
Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P style="font-size: 10pt" align="center"><B>Date of Report (Date of earliest
event reported): March 17, 2011</B>

<P style="font-size: 24pt" align="center"><B>CLEAN DIESEL TECHNOLOGIES,
INC.<BR>
</B><FONT style="font-size: 10pt">(Exact name of registrant as
specified in its charter) </FONT>
<TABLE style="text-align: center; font-size: 10pt" border="0" cellspacing="0"
cellpadding="0" width="100%">

 <TR>
  <TD width="32%">&nbsp;</TD>
  <TD width="1%">&nbsp;</TD>
  <TD width="33%">&nbsp;</TD>
  <TD width="1%">&nbsp;</TD>
  <TD width="32%">&nbsp;</TD>
 </TR>
 <TR valign="bottom">
  <TD style="border-bottom: #000000 1px solid"><B>DELAWARE</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>001-33710</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>06-1393453</B></TD>
 </TR>
 <TR valign="top">
  <TD>(State or other Jurisdiction of Incorporation)</TD>
  <TD>&nbsp;</TD>
  <TD>(Commission File Number)</TD>
  <TD>&nbsp;</TD>
  <TD>(IRS Employer Identification No.)</TD>
 </TR>

</TABLE>
<TABLE style="text-align: center; font-size: 10pt" border="0" cellspacing="0"
cellpadding="0" width="100%">

 <TR>
  <TD width="49%">&nbsp;</TD>
  <TD width="1%">&nbsp;</TD>
  <TD width="49%">&nbsp;</TD>
 </TR>
 <TR valign="bottom">
  <TD style="border-bottom: #000000 1px solid"><B>4567 TELEPHONE ROAD, SUITE
206<BR>
VENTURA, CALIFORNIA<BR>
</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>93003</B></TD>
 </TR>
 <TR valign="top">
  <TD>(Address of Principal Executive Offices)</TD>
  <TD>&nbsp;</TD>
  <TD>(Zip Code)</TD>
 </TR>

</TABLE>


<P style="font-size: 10pt" align="center">Registrant&#8217;s telephone number,
including area code: <B>(805) 639-9458</B>
<TABLE style="text-align: center; font-size: 10pt" border="0" cellspacing="0"
cellpadding="0" width="30%">

 <TR>
  <TD width="100%">&nbsp;</TD>
 </TR>
 <TR>
  <TD style="border-bottom: #000000 1px solid" nowrap><B>&nbsp;</B></TD>
 </TR>
 <TR>
  <TD nowrap>(Former name or former address if changed since last report.)</TD>
 </TR>

</TABLE>


<P style="font-size: 10pt" align="left">Check the appropriate box below if the
Form 8-K filing is intended to simultaneously satisfy the filing obligation of
the registrant under any of the following provisions:

<P style="font-size: 10pt" align="left"><FONT face="Wingdings">o</FONT> Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)<BR>
<BR>
<FONT face="Wingdings">o</FONT> Soliciting material pursuant
to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule
14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule
13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>


<DIV
style="border-bottom: black 1pt solid; margin-top: 10pt; width: 100%; font-size: 1pt">&nbsp;</DIV>
<DIV
style="border-bottom: black 2pt solid; width: 100%; font-size: 1pt">&nbsp;</DIV>
</DIV>

<P style="font-size: 10pt" align="center">&nbsp;

<P style="display: none; font-size: 10pt" align="center">1
</DIV>


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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

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<DIV align="left" style="margin-top: 10pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; background: transparent; color: #000000">
<TR>
    <TD width="7%"></TD>
    <TD width="1%"></TD>
    <TD></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left"><B>Item&nbsp;5.02</B></TD>
    <TD>&nbsp;</TD>
    <TD><B>Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.</B></TD>
</TR>
</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">On March&nbsp;17, 2011, the Board of Directors of Clean Diesel Technologies, Inc. upon
recommendation of the Compensation and Nominating Committee determined to grant non-qualified stock
options under our 1994 Incentive Plan (the &#147;Plan&#148;) to the executive officers, with such awards
covering the numbers of shares of our common stock set forth below:
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head --><TR valign="bottom">
    <TD width="86%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>Number of Shares</B></TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Charles F. Call</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">124,959</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Nikhil A. Mehta</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">19,000</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff; padding-top: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Stephen J. Golden</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">16,000</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Christopher J. Harris</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">12,500</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff; padding-top: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">David E. Shea</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">5,000</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Daniel K. Skelton</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">5,000</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body --></TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">The awards were granted on March&nbsp;17, 2011 and have an exercise price equal to the closing
price of a share of our common stock as reported on the NASDAQ on that day. The awards will vest
over a one-year period, with 50% vesting on the date of grant and the remaining 50% vesting on the
first anniversary of the grant date such that the stock option is fully exercisable on March&nbsp;17,
2012. The grants are contingent on execution of our form of stock option agreement and are subject
to the terms and conditions of the Plan.
</DIV>
<P align="center" style="font-size: 10pt; text-indent: 4%">&nbsp;

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif; margin-left: .25in; width: 7.50in">

<DIV align="center" style="font-size: 10pt; margin-top: 10pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">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.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><B>CLEAN DIESEL TECHNOLOGIES, INC.</B><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">March 22, 2011&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ Nikhil A. Mehta
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Name:&nbsp;&nbsp;</TD>
    <TD align="left">Nikhil A. Mehta&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Title:&nbsp;&nbsp;</TD>
    <TD align="left">Chief Financial Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>


<P align="center" style="font-size: 10pt">&nbsp;

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>




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