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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>SECURITIES AND
EXCHANGE COMMISSION </FONT></H1>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>WASHINGTON, D. C. 20549 </FONT></H1>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>FORM 8-K </FONT></H1>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>CURRENT REPORT </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>PURSUANT TO SECTION 13
OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Date of Report </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>October 23, 2003 </FONT></P>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>MedImmune, Inc.<BR>(Exact
name of registrant as specified in its charter) </FONT></H1>


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     <TD WIDTH="33%" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Delaware</FONT></TD>
     <TD WIDTH="33%" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>0-19131</FONT></TD>
     <TD WIDTH="34%" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>52-1555759</FONT></TD></TR>
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     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(State or other jurisdiction of</FONT></TD>
     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(Commission File No.)</FONT></TD>
     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(I.R.S. Employer Identification No.)</FONT></TD></TR>
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     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;incorporation or organization)</FONT></TD>
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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>35 West Watkins Mill
Road, Gaithersburg, MD 20878<BR>(Address of principal executive offices) (Zip Code) </FONT></P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Registrant&#146;s
telephone number, including area code (301) 417-0770 </FONT></P>





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<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Item 9. Regulation FD Disclosure. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>On October 23, 2003, MedImmune, Inc.
(the &#147;Company&#148;) issued a press release announcing the Company&#146;s results for
the three-month and nine-month periods ended September 30, 2003, and will conduct a previously announced
publicly available conference call to discuss those results. A copy of the Company&#146;s
press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>This information is being furnished pursuant to Items 9 and 12 of Form 8-K and is being presented under Item 9 of Form 8-K in
accordance with interim guidance issued by the Securities and Exchange Commission in Release Nos. 33-8216 and 34-47583.  This
information is not deemed to be &#147;filed&#148; for the purposes of Section 18 of the Securities Exchange Act of 1934 and is not incorporated
by reference into any registration statements filed under the Securities Act of 1933 or any report filed under the Securities
Exchange Act of 1934. </FONT></P>





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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>SIGNATURE </FONT></H1>

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<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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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>MEDIMMUNE, INC. </FONT></H1>

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<BR>BY: /s/ Lota S. Zoth<BR>&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;<BR>
Lota S. Zoth<BR>Vice President and Controller <BR> Principal Accounting Officer</FONT></TD>
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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Dated:  October 23, 2003 </FONT></P>






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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>EXHIBIT INDEX </FONT></H1>

<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Exhibit 99.1 &nbsp;-- &nbsp;Press release, dated October 23, 2003, "MedImmune Reports Record Revenues for 2003 Third Quarter and Nine-Month Period" </FONT></P>






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Third Quarter Earnings Press Release
SECURITIES AND
EXCHANGE COMMISSION
WASHINGTON, D. C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13
OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Date of Report
October 23, 2003
MedImmune, Inc.
(Exact
name of registrant as specified in its charter)
Delaware
0-19131
52-1555759
(State or other jurisdiction of
(Commission File No.)
(I.R.S. Employer Identification No.)
incorporation or organization)
35 West Watkins Mill
Road, Gaithersburg, MD 20878
(Address of principal executive offices) (Zip Code)
Registrant's
telephone number, including area code (301) 417-0770
Item 9. Regulation FD Disclosure.
On October 23, 2003, MedImmune, Inc.
(the "Company") issued a press release announcing the Company's results for
the three-month and nine-month periods ended September 30, 2003, and will conduct a previously announced
publicly available conference call to discuss those results. A copy of the Company's
press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.
This information is being furnished pursuant to Items 9 and 12 of Form 8-K and is being presented under Item 9 of Form 8-K in
accordance with interim guidance issued by the Securities and Exchange Commission in Release Nos. 33-8216 and 34-47583.  This
information is not deemed to be "filed" for the purposes of Section 18 of the Securities Exchange Act of 1934 and is not incorporated
by reference into any registration statements filed under the Securities Act of 1933 or any report filed under the Securities
Exchange Act of 1934.
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.
MEDIMMUNE, INC.
BY: /s/ Lota S. Zoth
——————————————
Lota S. Zoth
Vice President and Controller
Principal Accounting Officer
Dated:  October 23, 2003
EXHIBIT INDEX
Exhibit 99.1  --  Press release, dated October 23, 2003, "MedImmune Reports Record Revenues for 2003 Third Quarter and Nine-Month Period"