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<font face="Times New Roman, Times, Serif" size=5><b>UNITED STATES<br>
SECURITIES AND EXCHANGE COMMISSION<br></b></font>
<font face="Times New Roman, Times, Serif" size=2>Washington, DC 20549</font>
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<font face="Times New Roman, Times, Serif" size=5><b>FORM 8-K<br>
<br></b></font></p>
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<font face="Times New Roman, Times, Serif" size=5><b>CURRENT REPORT</b></font><br><font face="Times New Roman, Times, Serif" size=2><b>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934<br></b></font></p>
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<font face="Times New Roman, Times, Serif" size=2>Date of Report&nbsp;&nbsp;(Date of earliest event reported):&nbsp;&nbsp;&nbsp;&nbsp;May 25, 2006</font><br></p>
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<font face="Times New Roman, Times, Serif" size=5><b>MILLENNIUM PHARMACEUTICALS, INC.</b></font><br><font face="Times New Roman, Times, Serif" size=2>(Exact name of registrant as specified in its charter)</font></p>
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<td width=33% align=center valign=top><font face="Times New Roman, Times, Serif" size=2><b>Delaware</b></font></td>
<td width=34% align=center valign=top><font face="Times New Roman, Times, Serif" size=2><b>0-28494</b></font></td>
<td width=33% align=center valign=top><font face="Times New Roman, Times, Serif" size=2><b>04-3177038</b></font></td>
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<td width=33% align=center valign=top><font face="Times New Roman, Times, Serif" size=2>(State or other jurisdiction<br>of incorporation)</font></td>
<td width=34% align=center valign=top><font face="Times New Roman, Times, Serif" size=2>(Commission file number)</font></td>
<td width=33% align=center valign=top><font face="Times New Roman, Times, Serif" size=2>(IRS&nbsp;Employer<br>Identification&nbsp;No.)</font></td>
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<p align=center><font face="Times New Roman, Times, Serif" size=2><b>40 Landsdowne Street<br>Cambridge, Massachusetts 02139</b><br>
(Address of principal executive offices)&nbsp;(zip code)</font></p>

<p align=center><font face="Times New Roman, Times, Serif" size=2><b>(617)&nbsp;&nbsp;679-7000<br></b>
(Registrant's telephone number, including area code)</font></p>

<p align=center><font face="Times New Roman, Times, Serif" size=2><b>Not applicable<br></b>
(Former name or former address if changed since last report)</font></p>

<p align=left><font face="Times New Roman, Times, Serif" size=2>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 (see General Instruction A.2. below):</font></p>

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<td align=right valign=top width=3%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=right valign=top width=1%><font face="Times New Roman, Times, Serif" size=2>&#144;</font></td>
<td align=right valign=top width=2%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=left valign=top width=94%><font face="Times New Roman, Times, Serif" size=2>Written communications
pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></td>
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<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
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<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&#144;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=left valign=bottom><font face="Times New Roman, Times, Serif" size=2>Soliciting material pursuant to Rule
14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></td>
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<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
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<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&#144;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=left valign=bottom><font face="Times New Roman, Times, Serif" size=2>Pre-commencement communications pursuant
to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></td></tr>
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<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
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<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&#144;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=left valign=bottom><font face="Times New Roman, Times, Serif" size=2>Pre-commencement communications pursuant to Rule 13e-4(c)
under the Exchange Act (17 CFR 240.13e-4(c))</font></td></tr>
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<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td align=right valign=top><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
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<p align=left><font face="Times New Roman, Times, Serif" size=2><b>Item&nbsp;&nbsp;1.01&nbsp;&nbsp;&nbsp;&nbsp;Entry into a Material Definitive Agreement.
</b></font></p>
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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>On May 25, 2006, Millennium
Pharmaceuticals, Inc. (the &#147;Company&#148;) and Anna Protopapas entered into an
agreement under which, if her employment with the Company is terminated by the Company
other than for Justifiable Cause (as defined in the agreement), the Company will pay her a
severance payment equal to twelve months of her base salary at her then current rate of
pay. If Ms. Protopapas&#146; employment with the Company is terminated by the Company for
Justifiable Cause or voluntarily by her, she will not be entitled to the severance
payment. </FONT></P>








<p align=center><font face="Times New Roman, Times, Serif" size=2>2</font></p>
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<p align=center><FONT FACE="Times New Roman, Times, Serif" SIZE=2><b><a name="sig">SIGNATURE</a></b></font></p>

<p><FONT FACE="Times New Roman, Times, Serif" 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>




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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td colspan=2><font face="Times New Roman, Times, Serif" size=2>MILLENNIUM PHARMACEUTICALS, INC.<br>(Registrant)<br><br></font></td>
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<td width=30%><font face="Times New Roman, Times, Serif" size=2>Date: May 26, 2006&nbsp;</font></td>
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<td width=4%><font face="Times New Roman, Times, Serif" size=2>By&nbsp;</font></td>
<td width=36% align=left><font face="Times New Roman, Times, Serif" size=2>/s/&nbsp;&nbsp;MARSHA H. FANUCCI</font></td>
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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=4%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=36% align=left><font face="Times New Roman, Times, Serif" size=2></font><hr noshade></td>
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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=4%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=36% align=left><font face="Times New Roman, Times, Serif" size=2>Marsha H. Fanucci</font></td>
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<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=30%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=4%><font face="Times New Roman, Times, Serif" size=2>&nbsp;</font></td>
<td width=36% align=left><font face="Times New Roman, Times, Serif" size=2>Senior Vice President and Chief Financial Officer</font></td>
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<p align=center><font face="Times New Roman, Times, Serif" size=2>3</font></p>
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{"company-data": {"conformed-name": "MILLENNIUM PHARMACEUTICALS INC", "cik": "0001002637", "assigned-sic": "2834", "irs-number": "043177038", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-28494", "film-number": "06870909"}, "business-address": {"street1": "40 LANDSDOWNE STREET", "city": "CAMBRIDGE", "state": "MA", "zip": "02139", "phone": "6176797000"}, "mail-address": {"street1": "40 LANDSDOWNE STREET", "city": "CAMBRIDGE", "state": "MA", "zip": "02139"}}
Form 8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report  (Date of earliest event reported):    May 25, 2006
MILLENNIUM PHARMACEUTICALS, INC.
(Exact name of registrant as specified in its charter)
Delaware
0-28494
04-3177038
(State or other jurisdiction
of incorporation)
(Commission file number)
(IRS Employer
Identification No.)
40 Landsdowne Street
Cambridge, Massachusetts 02139
(Address of principal executive offices) (zip code)
(617)  679-7000
(Registrant's telephone number, including area code)
Not applicable
(Former name or former address if changed since last report)
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 (see General Instruction A.2. below):

Written communications
pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule
14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant
to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c)
under the Exchange Act (17 CFR 240.13e-4(c))
Item  1.01    Entry into a Material Definitive Agreement.
On May 25, 2006, Millennium
Pharmaceuticals, Inc. (the "Company") and Anna Protopapas entered into an
agreement under which, if her employment with the Company is terminated by the Company
other than for Justifiable Cause (as defined in the agreement), the Company will pay her a
severance payment equal to twelve months of her base salary at her then current rate of
pay. If Ms. Protopapas' employment with the Company is terminated by the Company for
Justifiable Cause or voluntarily by her, she will not be entitled to the severance
payment.
2
SIGNATURE
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.
MILLENNIUM PHARMACEUTICALS, INC.
(Registrant)
Date: May 26, 2006
By
/s/  MARSHA H. FANUCCI
Marsha H. Fanucci
Senior Vice President and Chief Financial Officer
3