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      Form 8-K - Merger Agreement Amendment and Release 5.21.07
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      STATES</strong></font></div>
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      AND EXCHANGE COMMISSION</strong></font></div>
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      D.C. 20549</font></div>
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      8-K</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman"><strong>CURRENT
      REPORT</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman"><strong>PURSUANT
      TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF
      1934</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">Date
      of
      Report (Date of earliest event reported) </font><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman"><strong>May
      21, 2007</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 18pt; FONT-FAMILY: Times New Roman"><strong>OSI
      RESTAURANT PARTNERS, INC.</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">(Exact
      name of registrant as specified in its charter)</font></div>
    <div>&#160;</div>
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            <td valign="top" width="17%">
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                or other jurisdiction of incorporation)</font></div>
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            <td valign="top" width="16%">
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                File Number)</font></div>
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            <td valign="top" width="17%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">(I.R.S.
                Employer</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">Identification
                No.)</font></div>
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      North West Shore Boulevard, Suite 500, Tampa, Florida
      33607</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">(Address
      of principal executive offices) (Zip Code)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
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      telephone number, including area code </font><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman"><strong>(813)
      282-1225</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
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      name or former address, if changed since last report)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br>&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">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:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-FAMILY: Wingdings">r<font id="TAB2" style="LETTER-SPACING: 9pt">&#160;</font></font>Written
      communications pursuant
      to Rule 425 under the Securities Act (17 CFR 230.425)</font></div>
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      material
      pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-FAMILY: Wingdings">r<font id="TAB2" style="LETTER-SPACING: 9pt">&#160;</font></font>Pre-commencement
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      communications
      pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
      240.13e-4(c))</font></div>
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                into a Material Definitive Agreement</strong></font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">&#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;&#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;&#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></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
            </td>
            <td align="left" valign="top" width="2%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="justify" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">On
                May 21, 2007, OSI Restaurant Partners, Inc. (the &#8220;Company&#8221; or &#8220;OSI&#8221;)
                entered into an amendment (the &#8220;May 21 amendment&#8221;) to its previously
                announced Agreement and Plan of Merger with Kangaroo Holdings, Inc.
                and
                Kangaroo Acquisition, Inc. that increases the consideration payable
                to OSI
                stockholders to $41.15 per share in cash, without interest, from
                $40.00
                per share. Kangaroo Holdings, Inc. is controlled by an investor group
                comprised of investment funds associated with Bain Capital Partners,
                LLC
                and investment funds affiliated with Catterton Management Company,
                LLC.
                The Company&#8217;s founders, certain holders associated with Chris T. Sullivan,
                the Company&#8217;s Chairman of the Board, and certain members of the Company&#8217;s
                management (the &#8220;OSI Investors&#8221;) are expected to exchange shares of OSI
                common stock for shares of Kangaroo Holdings, Inc. in connection
                with the
                merger. </font></div>
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          <tr>
            <td align="justify" valign="top" width="12%">&#160;</td>
            <td align="left" valign="top" width="2%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
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            <td align="justify" valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman"><strong>&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</strong></font></div>
            </td>
            <td align="left" valign="top" width="2%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="justify" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">The
                May 21 amendment also revises the closing condition that required
                a
                majority of the outstanding shares of OSI common stock entitled to
                vote at
                the special meeting to vote for the adoption of the original merger
                agreement, without consideration as to the vote of the OSI Investors.
                The
                May 21 amendment provides that, in addition to the affirmative vote
                of a
                majority of the outstanding shares of OSI common stock required under
                Delaware law, the Company must obtain the affirmative vote of the
                holders,
                as of the record date, of a majority of the number of shares of OSI
                common
                stock held by holders that are not OSI Investors, voting together
                as a
                single class, to adopt the amended merger agreement and the
                merger.</font></div>
            </td>
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            <td valign="top" width="12%">&#160;</td>
            <td align="left" valign="top" width="2%">&#160;</td>
            <td align="left" valign="top" width="64%">&#160;</td>
          </tr>
          <tr>
            <td valign="top" width="12%">&#160;</td>
            <td align="left" valign="top" width="2%">&#160;</td>
            <td align="justify" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">Under
                the May 21 amendment, the Company has agreed not to pay its regular
                quarterly cash dividend prior to the closing of the transactions
                contemplated by the amended merger agreement or termination of the
                amended
                merger agreement. In addition, the parties have agreed not to terminate
                the amended merger agreement under Section 7.1(b) of the amended
                merger
                agreement prior to the close of business on June 19, 2007.</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">The
                May 21 amendment also provides customary representations and warranties
                of
                the parties in connection with the execution of the
                amendment.</font></div>
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                it had
                entered into the May 21 amendment and announcing that its special
                meeting
                of stockholders will now be held on Friday, May 25, 2007, at 11:00
                a.m.,
                Eastern Daylight Time, at A La Carte Event Pavilion, 4050-B Dana
                Shores
                Drive, Tampa, Florida 33634; however, the Company expects to convene
                the
                special meeting for the sole purpose of adjourning it in order to
                permit
                the solicitation of additional votes and to provide stockholders
                with
                additional time to consider the changes to the merger effectuated
                by the
                May 21 amendment and to review updated proxy materials. The Company
                expects to reconvene the special meeting on Tuesday, June 5, 2007
                at 11:00
                a.m. Eastern Daylight Time at A La Carte Pavilion. The record date
                for the
                special meeting remains March 28, 2007. A copy of the release is
                attached
                as Exhibit 99.1.</font></div>
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            <td align="left" valign="top" width="2%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
            </td>
            <td align="left" valign="top" width="2%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">(d)
                Exhibits</font></div>
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            <td align="left" valign="top" width="2%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="left" valign="top" width="64%">&#160;</td>
          </tr>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">2.1</font></div>
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            <td align="left" valign="top" width="2%">&#160;</td>
            <td align="left" valign="top" width="64%">
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                to Agreement and Plan of Merger among Kangaroo Holdings, Inc., Kangaroo
                Acquisition, Inc. and OSI Restaurant Partners, Inc. dated as of May
                21,
                2007</font></div>
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            <td valign="top" width="12%">&#160;</td>
            <td align="left" valign="top" width="2%">&#160;</td>
            <td align="left" valign="top" width="64%">&#160;</td>
          </tr>
          <tr>
            <td valign="top" width="12%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">99.1</font></div>
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            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">OSI
                Restaurant Partners, Inc. release dated May 22,
                2007</font></div>
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                has duly caused this report to be signed on its behalf by the undersigned
                hereunto duly authorized.</font></div>
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          <tr>
            <td align="left" valign="top" width="22%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">&#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;&#160;</font></div>
            </td>
            <td align="left" valign="middle" width="21%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 11pt; FONT-FAMILY: Times New Roman">&#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></div>
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                RESTAURANT PARTNERS, INC.</strong></font></div>
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            <td align="left" valign="top" width="22%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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            <td align="left" valign="middle" width="5%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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            <td align="left" valign="middle" width="29%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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            <td align="left" valign="middle" width="21%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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                Dirk A. Montgomery</strong></font></div>
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Form 8-K - Merger Agreement Amendment and Release 5.21.07
UNITED
      STATES
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 (Date of earliest event reported)
May
      21, 2007
OSI
      RESTAURANT PARTNERS, INC.
(Exact
      name of registrant as specified in its charter)
Delaware
1-15935
59-3061413
(State
                or other jurisdiction of incorporation)
(Commission
                File Number)
(I.R.S.
                Employer
Identification
                No.)
2202
      North West Shore Boulevard, Suite 500, Tampa, Florida
      33607
(Address
      of principal executive offices) (Zip Code)
Registrant's
      telephone number, including area code
(813)
      282-1225
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:
r
Written
      communications pursuant
      to Rule 425 under the Securities Act (17 CFR 230.425)
r
Soliciting
material
      pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
r
Pre-commencement
      communications
      pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
      240.14d-2(b))
r
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 21, 2007, OSI Restaurant Partners, Inc. (the "Company" or "OSI")
                entered into an amendment (the "May 21 amendment") to its previously
                announced Agreement and Plan of Merger with Kangaroo Holdings, Inc.
                and
                Kangaroo Acquisition, Inc. that increases the consideration payable
                to OSI
                stockholders to $41.15 per share in cash, without interest, from
                $40.00
                per share. Kangaroo Holdings, Inc. is controlled by an investor group
                comprised of investment funds associated with Bain Capital Partners,
                LLC
                and investment funds affiliated with Catterton Management Company,
                LLC.
                The Company's founders, certain holders associated with Chris T. Sullivan,
                the Company's Chairman of the Board, and certain members of the Company's
                management (the "OSI Investors") are expected to exchange shares of OSI
                common stock for shares of Kangaroo Holdings, Inc. in connection
                with the
                merger.
The
                May 21 amendment also revises the closing condition that required
                a
                majority of the outstanding shares of OSI common stock entitled to
                vote at
                the special meeting to vote for the adoption of the original merger
                agreement, without consideration as to the vote of the OSI Investors.
                The
                May 21 amendment provides that, in addition to the affirmative vote
                of a
                majority of the outstanding shares of OSI common stock required under
                Delaware law, the Company must obtain the affirmative vote of the
                holders,
                as of the record date, of a majority of the number of shares of OSI
                common
                stock held by holders that are not OSI Investors, voting together
                as a
                single class, to adopt the amended merger agreement and the
                merger.
Under
                the May 21 amendment, the Company has agreed not to pay its regular
                quarterly cash dividend prior to the closing of the transactions
                contemplated by the amended merger agreement or termination of the
                amended
                merger agreement. In addition, the parties have agreed not to terminate
                the amended merger agreement under Section 7.1(b) of the amended
                merger
                agreement prior to the close of business on June 19, 2007.
The
                May 21 amendment also provides customary representations and warranties
                of
                the parties in connection with the execution of the
                amendment.
Item 8.01
Other
                Events
On
                May 22, 2007, the Company issued a press release announcing that
                it had
                entered into the May 21 amendment and announcing that its special
                meeting
                of stockholders will now be held on Friday, May 25, 2007, at 11:00
                a.m.,
                Eastern Daylight Time, at A La Carte Event Pavilion, 4050-B Dana
                Shores
                Drive, Tampa, Florida 33634; however, the Company expects to convene
                the
                special meeting for the sole purpose of adjourning it in order to
                permit
                the solicitation of additional votes and to provide stockholders
                with
                additional time to consider the changes to the merger effectuated
                by the
                May 21 amendment and to review updated proxy materials. The Company
                expects to reconvene the special meeting on Tuesday, June 5, 2007
                at 11:00
                a.m. Eastern Daylight Time at A La Carte Pavilion. The record date
                for the
                special meeting remains March 28, 2007. A copy of the release is
                attached
                as Exhibit 99.1.
Item 9.01
Financial
                Statements and Exhibits
(d)
                Exhibits
Exhibit
                No.
2.1
Amendment
                to Agreement and Plan of Merger among Kangaroo Holdings, Inc., Kangaroo
                Acquisition, Inc. and OSI Restaurant Partners, Inc. dated as of May
                21,
                2007
99.1
OSI
                Restaurant Partners, Inc. release dated May 22,
                2007
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.
OSI
                RESTAURANT PARTNERS, INC.
(Registrant)
Date:  May
                24, 2007
By:
/s/
                Dirk A. Montgomery
Dirk
                A. Montgomery
Chief
                Financial Officer