<SUBMISSION>
<ACCESSION-NUMBER>0001104659-05-027591
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>5
<PERIOD>20050603
<ITEMS>1.01
<ITEMS>5.02
<ITEMS>9.01
<FILING-DATE>20050609
<DATE-OF-FILING-DATE-CHANGE>20050609
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>AEROGEN INC
<CIK>0001039160
<ASSIGNED-SIC>3841
<IRS-NUMBER>330488580
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>000-31913
<FILM-NUMBER>05888216
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>2071 STIERLIN COURT
<CITY>MOUNTAIN VIEW
<STATE>CA
<ZIP>94043
<PHONE>650 864-7300
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2071 STIERLIN COURT
<CITY>MOUNTAIN VIEW
<STATE>CA
<ZIP>94043
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a05-10634_18k.htm
<DESCRIPTION>8-K
<TEXT>
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<p style="border:none;margin:0in 0in .0001pt;padding:0in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

</div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED
STATES<br>
SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington,
D. C.&nbsp; 20549</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;8-K</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT
REPORT</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Pursuant
to Section&nbsp;13 or 15(d)&nbsp;of the<br>
Securities Exchange Act of 1934</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report
(Date of earliest event reported):&nbsp;<b><font style="font-weight:bold;"> June&nbsp;3,
2005</font></b></font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">AEROGEN,
INC.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of
registrant as specified in its charter)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Delaware</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
jurisdiction of incorporation)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">0-31913</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">33-0488580</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission File
  No.)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer
  Identification No.)</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">2071
Stierlin Court, Suite&nbsp;100</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Mountain
View, CA 94043</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of
principal executive offices and zip code)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Registrant&#146;s
telephone number, including area code:<b><font style="font-weight:bold;">
(650)&nbsp;864-7300</font></b></font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">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 (see
General Instruction A.2. below):</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font>
Written communications pursuant to Rule&nbsp;425 under the Securities Act (17
CFR 230.425)</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font>
Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR
240.14a-12)</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font>
Pre-commencement communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the
Exchange Act (17 CFR 240.14d-2(b))</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font>
Pre-commencement communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the
Exchange Act (17 CFR 240.13e-4(c))</p>

<div style="border:none;border-bottom:double windowtext 9.0pt;padding:0in 0in 0in 0in;">

<p style="border:none;margin:0in 0in .0001pt;padding:0in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

</div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-1.0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 1.01.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Entry into a Material Definitive Agreement.</font></b></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">On
June&nbsp;3, 2005,&#160; the Board of
Directors of </font>Aerogen,&nbsp;Inc. (the &#147;Company&#148;)&#160; approved the terms of the Management
Incentive Plan (the &#147;Incentive Plan&#148;) which is applicable to executive officers
and others as may be designated by the Board of Directors. Participants in the
Incentive Plan shall be eligible to receive an incentive bonus of between
approximately twenty to forty percent of such participant&#146;s current base annual
salary to be paid upon the earliest of: (i)&nbsp;the closing of a strategic
transaction of a type approved by the Board of Directors; (ii)&nbsp;a
liquidation of the Company; or (iii)&nbsp;March&nbsp;31, 2006. In addition, the
Board of Directors may implement the payment of bonuses under the Incentive
Plan within its sole discretion at any time.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">A copy of the Incentive
Plan is attached as Exhibit&nbsp;10.19 hereto and incorporated herein by
reference.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-1.0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 5.02.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Departure
of Directors or Principal Officers; Election of Directors; Appointment of
Principal Officers.</font></b></p>

<p style="margin:0in 0in .0001pt 76.5pt;text-autospace:none;text-indent:-76.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On June&nbsp;6, 2005, the
Company issued a press release announcing the appointment of John C. Hodgman,
age 50, as President and Chief Executive Officer of the Company.&#160; Prior to joining the Company, Mr.&nbsp;Hodgman
has been with Cygnus,&nbsp;Inc. since 1994, becoming President and Chief
Executive Officer in 1998 and also serving as chairman of Cygnus&#146; board of
directors since 1999 to 2005.&nbsp; He serves on the boards of directors of AVI
BioPharma,&nbsp;Inc., Immersion Corporation, and Cygnus,&nbsp;Inc., where he
also continues to serve as Chairman, President, and Chief Executive Officer.
&nbsp;Mr.&nbsp;Hodgman received a B.S. in Accounting and Finance from Brigham
Young University and an M.B.A. at the University of Utah.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to an offer
letter with the Company, dated June&nbsp;3, 2005, Mr.&nbsp;Hodgman will receive
an annual base salary of $300,000, less withholding and all required
deductions, and will be eligible to participate in the Incentive Plan and
Executive Severance Change of Control Plan of the Company.&#160; In addition, Mr.&nbsp;Hodgman would be
eligible for a cash payment in the event of a bankruptcy or liquidation of the
Company and stock options in the event of a restructuring of the Company.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">A copy of the Offer
Letter and press release announcing the appointment of Mr.&nbsp;Hodgman is
attached as Exhibit&nbsp;10.20 and Exhibit&nbsp;99.1, respectively, to this
current report and are incorporated herein by reference.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In addition, effective June&nbsp;6,
2003, Jane E. Shaw has resigned as Chief Executive Officer, and effective June&nbsp;30,
2005, will resign as Chairman of the Company&#146;s Board of Directors. As of that
time, Jean-Jacques Bienaime will become Lead Director of the Company.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-1.0in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.01.</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Financial
Statements and Exhibits.</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Exhibits:</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.19</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Management
Incentive Plan.</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.20</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Offer Letter,
dated June&nbsp;3, 2005, by and between the Company and John C. Hodgman.</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">&nbsp;</font>99.1</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Press
Release, dated June&nbsp;6, 2005, entitled &#147;Aerogen Appoints President and
Chief Executive Officer.&#148;</p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div style="font-family:Times New Roman;">

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURE</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">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, thereunto
duly authorized.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="63%" valign="top" style="padding:0in 0in 0in 0in;width:63.86%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="36%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:36.14%;">
  <p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">AEROGEN</font></b>,<b><font style="font-weight:bold;"> INC.</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="63%" valign="top" style="padding:0in 0in 0in 0in;width:63.86%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="36%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:36.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="63%" valign="top" style="padding:0in 0in 0in 0in;width:63.86%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="36%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:36.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="63%" valign="top" style="padding:0in 0in 0in 0in;width:63.86%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dated:&nbsp; June&nbsp;9,
  2005</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.68%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="32%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:32.46%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Robert S. Breuil</font></p>
  </td>
 </tr>
 <tr>
  <td width="63%" valign="top" style="padding:0in 0in 0in 0in;width:63.86%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="5%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:5.56%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="30%" valign="top" style="padding:0in 0in 0in 0in;width:30.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;Robert S. Breuil</font></p>
  </td>
 </tr>
 <tr>
  <td width="63%" valign="top" style="padding:0in 0in 0in 0in;width:63.86%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="5%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:5.56%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="30%" valign="top" style="padding:0in 0in 0in 0in;width:30.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Financial Officer
  and Vice</font></p>
  </td>
 </tr>
 <tr>
  <td width="63%" valign="top" style="padding:0in 0in 0in 0in;width:63.86%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:5.56%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="30%" valign="top" style="padding:0in 0in 0in 0in;width:30.58%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">President of Corporate
  Development</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="478" style="border:none;"></td>
  <td width="28" style="border:none;"></td>
  <td width="14" style="border:none;"></td>
  <td width="229" style="border:none;"></td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

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<div style="font-family:Times New Roman;">

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBITS</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.19</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Management
Incentive Plan.</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.20</font>&#160;&#160;&#160;&#160;&#160;&#160; Offer
Letter, dated June&nbsp;3, 2005, by and between the Company and John C.
Hodgman.</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">&nbsp;</font>99.1</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Press
Release, dated June&nbsp;6, 2005, entitled &#147;Aerogen Appoints President and
Chief Executive Officer.&#148;</p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

</div>
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<DOCUMENT>
<TYPE>EX-10.19
<SEQUENCE>2
<FILENAME>a05-10634_1ex10d19.htm
<DESCRIPTION>EX-10.19
<TEXT>
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<head>





</head>

<body lang="EN-US">

<div style="font-family:Times New Roman;">

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibit&nbsp;10.19</font></b></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">AEROGEN,
INC.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SUMMARY OF
TERMS OF</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">MANAGEMENT
INCENTIVE PLAN</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="97%" style="border-collapse:collapse;width:97.84%;">
 <tr>
  <td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.8%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">I.</font></b></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.2%;">
  <p align="left" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Purpose
  &#151; </font></b>Retain and motivate key employees of Aerogen in order to
  maximize Aerogen&#146;s ability to sustain and enhance shareholder value, either
  through strategic transactions, restructuring of Aerogen&#146;s business, or the
  generation of considerable sources of capital.</p>
  </td>
 </tr>
 <tr>
  <td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.8%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.2%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.8%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">II.</font></b></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.2%;">
  <p align="left" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Eligible
  Participants &#151; </font></b>Executive officers and others as may be
  designated by the Board of Directors.</p>
  </td>
 </tr>
 <tr>
  <td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.8%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.2%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.8%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">III.</font></b></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.2%;">
  <p align="left" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Incentive
  Payment &#151; </font></b>Each participant in the Management Incentive Plan
  shall be eligible for an incentive bonus of between approximately twenty and
  forty percent of such participant&#146;s current base annual salary to be paid
  upon the earliest of: (i)&nbsp;the closing of a strategic transaction of a
  type approved by the Board of Directors; (ii)&nbsp;a liquidation of the Company; or (iii)&nbsp;March&nbsp;31, 2006. In
  addition, the Board of Directors may implement the payment of bonuses under
  the Incentive Plan within its sole discretion at any time.</p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

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<DOCUMENT>
<TYPE>EX-10.20
<SEQUENCE>3
<FILENAME>a05-10634_1ex10d20.htm
<DESCRIPTION>EX-10.20
<TEXT>
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<head>





</head>

<body lang="EN-US">

<div style="font-family:Times New Roman;">

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibit 10.20</font></b></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">June&nbsp;3, 2005</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John C. Hodgman</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Re:&#160;&#160;&#160;&#160; Employment
Terms</font></b></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dear John:</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Aerogen,&nbsp;Inc.</font><b><font style="font-weight:bold;"> </font></b>(the
&#147;Company&#148;) is pleased to offer you the position of President and Chief
Executive Officer on the following terms.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">You will be responsible
for overall management of the Company, reporting to the Company&#146;s Board of
Directors (&#147;Board&#148;).&#160; </font>The Company shall use its best efforts to
elect you to the Board for so long as you hold the position of President and
Chief Executive Officer of the Company.&#160;
You agree to serve as a director if elected by the shareholders and the
Board, as the case may be.&#160; The current
Chairman of the Board, Dr.&nbsp;Jane Shaw, shall resign her positions as
Chairman and as a Director of the Company, effective June&nbsp;30, 2005.</p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">You will work at the Company&#146;s
headquarters located in Mountain View, California.&#160; The Company may change your work location
from time to time in its discretion.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Your base salary will be
$300,000 per year, less payroll withholding and all required deductions, paid
semi-monthly.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">You will be eligible to
participate in the Management Incentive Plan, whereby you would earn an amount
equal to forty percent (40%) of your then base salary, subject to payroll
withholding, if you are actively employed as the Company&#146;s President and Chief Executive
Officer upon the earliest to occur of the following:&#160; 1) completion of a strategic alternative, such
as an acquisition of the Company by merger, stock purchase, or a sale of the
Company or substantially all of its assets, either in a single transaction or
in a series of transactions;&#160; 2)
liquidation of the Company on or before December&nbsp;5, 2005; or 3) March&nbsp;31,
2006.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In addition, you will be
eligible to participate in the Executive Severance Change of Control Program,
the detailed terms of which are currently being formulated and documented.&#160; Although the Program will contain a specific
and detailed definition of &#147;Change of Control&#148;, the Company agrees that as the
Program will apply to you, a Change of Control will be deemed to have occurred
if fifty-one percent (51%) or more of the Company&#146;s equity is acquired by a new
owner.&#160; In addition, a Change of Control
while you are President and Chief Executive Officer will constitute a material
or substantial change in your responsibilities, for purposes of the
Program.&#160; Your severance available under
the Program will be equivalent to one (1)&nbsp;year of base salary, subject to
payroll withholding.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In the event that the
Company files for, or has filed against it, a bankruptcy proceeding in the
United States Bankruptcy Court, leading to the liquidation of the Company after
December&nbsp;5,</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2005 and while you are
President and Chief Executive Officer, then upon completion of the liquidation,
the Company shall pay you the equivalent of one (1)&nbsp;year of base salary, subject
to payroll withholding.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In order to receive
severance related to a Change of Control or liquidation, you will be required
to execute and deliver a fully effective general release of all claims, known
and unknown, against the Company and its affiliates, in a form acceptable to
the Company.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Because of the
uncertainty of the application of Section&nbsp;409A of the Internal Revenue
Code of 1986, as amended (the &#147;Code&#148;), to severance payments pursuant to this
letter agreement, you agree that if any such payments are subject to the
provisions of Section&nbsp;409A of the Code, by reason of this&nbsp;letter
agreement, or any part thereof, being considered a &#147;nonqualified deferred
compensation plan&#148; pursuant to Section&nbsp;409A of the Code, then such
payments shall be made in accordance with Section&nbsp;409A of the Code,
including, without limitation, any necessary delay of six (6)&nbsp;months
applicable to payment of deferred compensation to a &#147;specified employee&#148; (as
defined in Section&nbsp;409A(2)(B)(i)&nbsp;of the Code) upon separation from service.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In the event that the
Board decides to restructure the Company&#146;s balance sheet and reduce ongoing
expenditures, in order to promote the Company&#146;s growth as an independent entity
in lieu of a strategic alternative, then subject to the approval of the Board you
shall be granted an option to purchase at least two percent (2%) but not more
than four percent (4%) [on a fully-diluted basis] of the Company&#146;s common
stock, at the fair market value as determined by the Board as of the date of grant.&#160; The Board shall determine in its sole
discretion the number of shares granted to you, based upon the Board&#146;s
evaluation of your work performance and the new valuation of the Company. &#160;&#160;The option shall be subject to a standard
vesting schedule&nbsp;and will be governed in all respects by the applicable
plan documents, grant notice and option agreement.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">You will be eligible for
all standard Company benefits, including medical insurance, vacation, sick
leave, and paid holidays.&#160; Details about
these benefits are provided in the Employee Handbook and Summary Plan
Descriptions, available for your review.&#160;
The Company may change
employee benefits from time to time in its discretion.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">As a Company employee,
you will be expected to abide by Company rules&nbsp;and policies, and to
acknowledge in writing that you have read the Company&#146;s Employee Handbook.&#160; As a condition of employment, you must sign
and comply with the attached Proprietary Information and Inventions Agreement
which prohibits unauthorized use or disclosure of Company proprietary
information.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In your work for the
Company, you will be expected not to use or disclose any confidential
information, including trade secrets, of any former employer or other person to
whom you have an obligation of confidentiality.&#160;
Rather, you will be expected to use only that information which is
generally known and used by persons with training and experience comparable to
your own, which is common knowledge in the industry or otherwise legally in the
public domain, or which is otherwise provided or developed by the Company. You
agree that you will not bring onto Company premises any unpublished documents
or property belonging to any former employer or</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>

<div align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">other person to whom you
have an obligation of confidentiality.&#160;
You represent further that you have disclosed to the Company any
contract you have signed that may restrict your activities on behalf of the
Company.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">You may terminate your
employment with the Company at any time and for any reason whatsoever simply by
notifying the Company.&#160; Likewise, the Company
may terminate your employment at any time, with or without cause or advance
notice.&#160; Your employment at-will status
can only be modified in a written agreement signed by you and by the Board.&#160; As required by law, this offer is subject to
satisfactory proof of your right to work in the United States.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">This letter, together
with your Proprietary Information and Inventions Agreement, forms the complete
and exclusive statement of your employment agreement with the Company.&#160; The employment terms in this letter supersede
any other agreements or promises made to you by anyone, whether oral or
written.&#160; Changes in your employment
terms, other than those changes expressly reserved to the Company&#146;s discretion
in this letter, require a written modification signed by an officer of the
Company.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Please sign and date this
letter and the enclosed Proprietary Information and Inventions Agreement, and
return them to me by no later than [5p.m., Friday June&nbsp;3, 2005/Monday
morning, June&nbsp;6, 2005] if you wish to accept employment at the Company
under the terms described above.&#160; If you
accept our offer, we would like you to start on June&nbsp;6, 2005.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We look forward to your favorable reply and to a productive and
enjoyable work relationship.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sincerely,</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="37%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:37.24%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Jean-Jacques Bienaim&#233;</font></p>
  </td>
  <td width="11%" valign="top" style="padding:0in .7pt 0in .7pt;width:11.26%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jean-Jacques Bienaim&#233;</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Board Member</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Accepted:</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="37%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:37.24%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ John C. Hodgman</font></p>
  </td>
  <td width="11%" valign="top" style="padding:0in .7pt 0in .7pt;width:11.26%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="25%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:25.74%;">
  <p align="left" style="margin:0in 0in .0001pt 20.0pt;text-align:left;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6/6/05</font></p>
  </td>
  <td width="25%" valign="top" style="padding:0in .7pt 0in .7pt;width:25.74%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:48.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John C. Hodgman</font></p>
  </td>
  <td width="51%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:51.5%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date</font></p>
  </td>
 </tr>
</table>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Attachment:&#160; Proprietary
Information and Inventions Agreement</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>

<div align="left" style="margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

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<TYPE>EX-99.1
<SEQUENCE>4
<FILENAME>a05-10634_1ex99d1.htm
<DESCRIPTION>EX-99.1
<TEXT>
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<head>





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<body lang="EN-US" style="text-justify-trim:punctuation;">

<div>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibit&nbsp;99.1</font></b></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman"><img width="103" height="61" src="g106341mmimage001.jpg"></font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Contact: Robert S. Breuil., (650) 864-7431</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="font-style:italic;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:normal;font-weight:bold;">AEROGEN APPOINTS PRESIDENT AND CHIEF EXECUTIVE OFFICER</font></i></b></p>

<p align="center" style="font-style:italic;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:normal;">&nbsp;</font></i></p>

<p style="font-style:italic;margin:0in 0in .0001pt;text-autospace:none;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:normal;">MOUNTAIN VIEW, CA, June&nbsp;6, 2005 &#151; Aerogen,&nbsp;Inc.
(Nasdaq: AEGN) today announced that John C. Hodgman has joined Aerogen as
President and Chief Executive Officer; effective today, Jane E. Shaw, Ph.D.,
has resigned as Chief Executive Officer, and effective June&nbsp;30<sup>th</sup>,
will resign as Chairman of the Board; as of that time, Jean-Jacques Bienaim&#233;
will become Lead Director of Aerogen.</font></i></p>

<p style="font-style:italic;margin:0in 0in .0001pt;text-autospace:none;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:normal;">&nbsp;</font></i></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mr.&nbsp;Hodgman joined
Cygnus,&nbsp;Inc. in 1994, becoming President and Chief Executive Officer in
1998 and also serving as the company&#146;s Chairman of the Board for the last six
years.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;I am delighted to welcome
John to Aerogen&#146;s senior management team.&#160;
His expertise, gained from years of practical experience, will be
extremely beneficial to Aerogen as we develop and pursue the many opportunities
that exist for our company,&#148; said Jean-Jacques Bienaim&#233;, Aerogen Board member
and Chief Executive Officer of<b><font style="font-weight:bold;"> </font></b><strong><b><font face="Times New Roman" style="font-weight:normal;">BioMarin Pharmaceutical
Inc</font></b></strong><b><font style="font-weight:bold;">.</font></b></font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;My years at Aerogen&#146;s helm
have been very rewarding and given me the opportunity to interact on a daily
basis with colleagues of integrity who have a passion for developing novel
aerosol products that will improve outcomes for critically ill patients with
respiratory disorders,&#148; said Jane E. Shaw, Ph.D., Aerogen Chairman and Chief
Executive Officer.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mr.&nbsp;Hodgman received a
B.S. in Accounting and Finance from Brigham Young University and an M.B.A. at
the University of Utah.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aerogen,
a specialty pharmaceutical company, develops products based on its OnQ<sup>&#174;</sup>
Aerosol Generator technology to improve the treatment of respiratory disorders
in the acute care setting.&#160; Aerogen
currently markets the Aeroneb<sup>&#174;</sup> Professional Nebulizer System for use
in hospitals.&#160; Aerogen has presented the
results of its first Phase 2 clinical study evaluating delivery of aerosolized
amikacin for the treatment of ventilator-associated pneumonia; an additional
Phase 2 study is currently underway.&#160;
Following amikacin, additional drug products targeting improved
respiratory therapy in the acute care setting are in the feasibility and
pre-clinical stages of development.&#160; In
the U.S., Aerogen has commercialized the Aeroneb<sup>&#174;</sup> Go Nebulizer for
home use through its commercial partner, Evo Medical Solutions,&nbsp;Inc.&#160; Aerogen also has development collaborations
with pharmaceutical and biotechnology companies for use of its technology in
the delivery of novel compounds that treat respiratory and other disorders.&#160; Aerogen is headquartered in Mountain View,
California, with a campus in Galway, Ireland. For more information, visit
www.aerogen.com.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">To
the extent any statements made in this release relate to information that is
not historical, these statements are necessarily forward-looking. As such, they
are subject to the occurrence of many events outside of Aerogen&#146;s control and
other uncertainties, and are subject to various risk factors that could cause
Aerogen&#146;s actual results to differ materially from those expressed in any
forward-looking statement.&#160; The risk
factors include, without limitation, the need for additional funding, the
inherent risks of product development, clinical outcomes, regulatory risks and
risks related to proprietary rights, market acceptance and competition, and are
described in Aerogen&#146;s</font></i></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">reports
and other filings with the U.S. Securities and Exchange Commission, including
Aerogen&#146;s Annual Report on Form&nbsp;10-K/A for the year ended December&nbsp;31,
2004, filed with the Securities and Exchange Commission (&#147;SEC&#148;) on April&nbsp;19,
2005, and its Quarterly Report on Form&nbsp;10-Q for the quarter ended March&nbsp;31,
2005, filed with the SEC on May&nbsp;13, 2005. Aerogen does not undertake any
obligation to update forward-looking statements.</font></i></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="line-height:normal;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">###</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="2" width="100%" noshade color="gray" align="left">

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