<SUBMISSION>
<ACCESSION-NUMBER>0000912057-02-031185
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>4
<PERIOD>20020812
<ITEMS>7
<ITEMS>9
<FILING-DATE>20020812
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>SL GREEN REALTY CORP
<CIK>0001040971
<ASSIGNED-SIC>6798
<IRS-NUMBER>133956775
<STATE-OF-INCORPORATION>MD
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>001-13199
<FILM-NUMBER>02727391
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>420 LEXINGTON AVENUE
<STREET2>ATTN: STEVEN KAHN
<CITY>NEW YORK
<STATE>NY
<ZIP>10170
<PHONE>2125942700
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>420 LEXINGTON AVENUE
<STREET2>ATTN: STEVEN KAHN
<CITY>NEW YORK
<STATE>NY
<ZIP>10170
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a2086958z8-k.htm
<DESCRIPTION>8-K
<TEXT>
<HTML>
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<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
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<P ALIGN="CENTER"><FONT SIZE=4><B>SECURITIES AND EXCHANGE COMMISSION<BR>  </B></FONT><FONT SIZE=3><B>Washington, D.C. 20549  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=4><B>FORM 8-K  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>CURRENT REPORT </FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<P ALIGN="CENTER"><FONT SIZE=2>Pursuant
to Section 13 or 15(d) of the<BR>
Securities Exchange Act of 1934 </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>Date
of Report: August 12, 2002 </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=4><B>SL GREEN REALTY CORP.<BR>  </B></FONT><FONT SIZE=2>(Exact Name of Registrant as Specified in its Charter) </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B>Maryland<BR>  </B></FONT><FONT SIZE=2>(State of Incorporation) </FONT></P>

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<TD WIDTH="47%" ALIGN="CENTER"><FONT SIZE=2><B>1-13199</B></FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="47%" ALIGN="CENTER"><FONT SIZE=2><B>13-3956775</B></FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="47%" ALIGN="CENTER"><FONT SIZE=2>(Commission File Number)</FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="47%" ALIGN="CENTER"><FONT SIZE=2>(IRS Employer ID. Number)</FONT></TD>
</TR>
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<TD WIDTH="47%" ALIGN="CENTER"><BR><FONT SIZE=2><B>420 Lexington Avenue<BR>
New York, New York<BR> </B></FONT><FONT SIZE=2>(Address of Principal Executive Offices)</FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="47%" ALIGN="CENTER"><BR><FONT SIZE=2><B>10170<BR> </B></FONT><FONT SIZE=2>(Zip Code)</FONT></TD>
</TR>
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<P ALIGN="CENTER"><FONT SIZE=2><B>(212) 594-2700<BR>  </B></FONT><FONT SIZE=2>(Registrant's Telephone Number, Including Area Code) </FONT></P>

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NAME="page_de7413_1_2"> </A> </FONT></P>

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<P><FONT SIZE=2><A
NAME="de7413_item_7._financial_statements_and_exhibits"> </A>
<A NAME="toc_de7413_1"> </A>
<BR></FONT><FONT SIZE=2><B>ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS    <BR>  </B></FONT></P>

<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD><FONT SIZE=2>EXHIBITS
<BR><BR></FONT>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>a.</FONT></DT><DD><FONT SIZE=2>Transmittal
Letter
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>b.</FONT></DT><DD><FONT SIZE=2>Certification
of Chief Executive Officer
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>c.</FONT></DT><DD><FONT SIZE=2>Certification
of Chief Financial Officer </FONT></DD></DL>
</DD></DL>

<P><FONT SIZE=2><A
NAME="de7413_item_9._regulation_fd_disclosure"> </A>
<A NAME="toc_de7413_2"> </A>
<BR></FONT><FONT SIZE=2><B>ITEM 9. REGULATION FD DISCLOSURE    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On
July&nbsp;31, 2002, SL Green Realty Corp. (the "Company") filed its Quarterly Report on Form 10-Q for the quarter ended June&nbsp;30, 2002 with the Securities and Exchange
Commission. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
transmittal letter and certifications attached as exhibits hereto are being furnished solely pursuant to Section&nbsp;906 of the Sarbanes-Oxley Act of 2002 and are not being filed
as part of the Company's Quarterly Report on Form&nbsp;10-Q for the quarter ended June&nbsp;30, 2002 or as a separate disclosure document. The information included in this Current Report on
Form&nbsp;8-K (including the exhibits hereto) is furnished pursuant to Item&nbsp;9 and shall not be deemed to be "filed" for the purposes of Section&nbsp;18 of the Securities Exchange Act of
1934, as amended, or otherwise subject to the liabilities of that Section or Sections&nbsp;11 and 12(a)(2) of the Securities Act of 1933, as amended. This Current Report (including
the exhibits hereto) will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation&nbsp;FD. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>2</FONT></P>

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<A NAME="page_de7413_1_3"> </A>
<P ALIGN="CENTER"><FONT SIZE=2><B>SIGNATURES  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, 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="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD COLSPAN=3><FONT SIZE=2><B>SL GREEN REALTY CORP.</B></FONT></TD>
</TR>
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<TD WIDTH="47%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2><BR>
By:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="43%"><FONT SIZE=2><BR>
/s/ Thomas E. Wirth</FONT><HR NOSHADE><FONT SIZE=2> Thomas E. Wirth<BR>
Chief Financial Officer</FONT></TD>
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<P><FONT SIZE=2>Date:
August&nbsp;12, 2002 </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>3</FONT></P>

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<P><br><A NAME="02NYC7413_1">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<UL>
<FONT SIZE=2><A HREF="#toc_de7413_1">ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_de7413_2">ITEM 9. REGULATION FD DISCLOSURE</A></FONT><BR>
</UL>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>3
<FILENAME>a2086958zex-99_1.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
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<P ALIGN="RIGHT"><FONT SIZE=2><A
NAME="df7413_exhibit_99.1"> </A>
<A NAME="toc_df7413_1"> </A>
<BR></FONT><FONT SIZE=2><B>Exhibit 99.1    <BR>  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B>SL Green Realty Corp.<BR>
420 Lexington Avenue<BR>
New York, NY 10170  </B></FONT></P>

<P><FONT SIZE=2>August
12, 2002 </FONT></P>

<P><FONT SIZE=2>Securities
and Exchange Commission<BR>
450 Fifth Street, N.W.<BR>
Washington, D.C. 20549 </FONT></P>

<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>Re:</FONT></DT><DD><FONT SIZE=2>SL
Green Realty Corp.<BR>
Quarterly Report on Form 10Q for the quarter ended June 30, 2002 </FONT></DD></DL>


<P><FONT SIZE=2>Ladies
and Gentlemen: </FONT></P>

<P><FONT SIZE=2>Transmitted
herewith are written statements pursuant to 18 U.S.C. Section&nbsp;1350, as adopted pursuant to Section&nbsp;906 of the Sarbanes-Oxley Act of 2002, to accompany the above referenced
periodic report. </FONT></P>

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<TD COLSPAN=3><FONT SIZE=2>Very truly yours,</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="47%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD COLSPAN=3><BR><FONT SIZE=2><B>SL GREEN REALTY CORP.</B></FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="47%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2><BR>
By:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="43%"><FONT SIZE=2><BR>
/s/ Thomas E. Wirth</FONT><HR NOSHADE><FONT SIZE=2> Thomas E. Wirth<BR>
Chief Financial Officer</FONT></TD>
</TR>
</TABLE>
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<P><br><A NAME="02NYC7413_2">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<UL>
<FONT SIZE=2><A HREF="#toc_df7413_1">Exhibit 99.1</A></FONT><BR>
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<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>4
<FILENAME>a2086958zex-99_2.htm
<DESCRIPTION>EXHIBIT 99.2
<TEXT>
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NAME="dg7413_exhibit_99.2"> </A>
<A NAME="toc_dg7413_1"> </A>
<BR></FONT><FONT SIZE=2><B>Exhibit 99.2    <BR>  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B>CERTIFICATION OF PRINCIPAL EXECUTIVE AND FINANCIAL OFFICERS<BR>
PURSUAN TO 18 U.S.C. 1350<BR>
(SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002)  </B></FONT></P>

<P><FONT SIZE=2>August
9, 2002 </FONT></P>

<P><FONT SIZE=2>Securities
and Exchange Commission<BR>
450 Fifth Street, N.W.<BR>
Washington, D.C. 20549 </FONT></P>

<P><FONT SIZE=2>The
Quarterly Report of SL Green Realty Corp. (the "Company") on Form&nbsp;10-Q for the period ending June 30, 2002 (the "Report") was filed with the Securities and Exchange Commission on
July&nbsp;31, 2002. Pursuant to 18 U.S.C. Section&nbsp;1350 adopted pursuant to Section&nbsp;906 of The Sarbanes-Oxley Act of 2002, the undersigned, Stephen L. Green, Chief Executive Officer of
the Company, certifies that to his knowledge: </FONT></P>

<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD><FONT SIZE=2>The
Report fully complies with the requirements of Section&nbsp;13(a) and 15(d) of the Securities Exchange Act of 1934; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>(2)</FONT></DT><DD><FONT SIZE=2>The
information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. </FONT></DD></DL>
<BR>

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<TD WIDTH="5%"><FONT SIZE=2>By:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="93%"><FONT SIZE=2>/s/ Stephen L. Green</FONT><HR NOSHADE ALIGN=LEFT WIDTH="26%"><FONT SIZE=2> Stephen L. Green<BR>
Chief Executive Officer</FONT></TD>
</TR>
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<UL>
<FONT SIZE=2><A HREF="#toc_dg7413_1">Exhibit 99.2</A></FONT><BR>
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<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>5
<FILENAME>a2086958zex-99_3.htm
<DESCRIPTION>EXHIBIT 99.3
<TEXT>
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NAME="dh7413_exhibit_99.3"> </A>
<A NAME="toc_dh7413_1"> </A>
<BR></FONT><FONT SIZE=2><B>Exhibit 99.3    <BR>  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B>CERTIFICATION OF PRINCIPAL EXECUTIVE AND FINANCIAL OFFICERS<BR>
PURSUAN TO 18 U.S.C. 1350<BR>
(SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002)  </B></FONT></P>

<P><FONT SIZE=2>August
9, 2002 </FONT></P>

<P><FONT SIZE=2>Securities
and Exchange Commission<BR>
450 Fifth Street, N.W.<BR>
Washington, D.C. 20549 </FONT></P>

<P><FONT SIZE=2>The
Quarterly Report of SL Green Realty Corp. (the "Company") on Form&nbsp;10-Q for the period ending June 30, 2002 (the "Report") was filed with the Securities and Exchange Commission on July 31,
2002. Pursuant to 18&nbsp;U.S.C. Section&nbsp;1350 adopted pursuant to Section&nbsp;906 of The Sarbanes-Oxley Act of 2002, the undersigned, Thomas E. Wirth, Chief Financial Officer of the
Company, certifies that to his knowledge: </FONT></P>

<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(3)</FONT></DT><DD><FONT SIZE=2>The
Report fully complies with the requirements of Section&nbsp;13(a) and 15(d) of the Securities Exchange Act of 1934; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>(4)</FONT></DT><DD><FONT SIZE=2>The
information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. </FONT></DD></DL>
<BR>

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By:</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="93%"><FONT SIZE=2><BR>
/s/ Thomas E. Wirth</FONT><HR NOSHADE ALIGN=LEFT WIDTH="26%"><FONT SIZE=2> Thomas E. Wirth<BR>
Chief Financial Officer</FONT></TD>
</TR>
</TABLE>
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<FONT SIZE=2><A HREF="#toc_dh7413_1">Exhibit 99.3</A></FONT><BR>
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