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<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P align="center" style="font-size: 18pt"><B>FORM 8-K</B>

<P align="center" style="font-size: 12pt"><B>CURRENT REPORT<BR>
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P align="center" style="font-size: 10pt"><B>Date of Report (Date of earliest event reported): April 23, 2009</B>

<P align="center">

<P align="center" style="font-size: 24pt"><B>GTSI Corp.</B><BR>
<FONT style="font-size: 10pt">(Exact name of registrant as specified in its charter)
</FONT>

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    <TD style="border-bottom: 1px solid #000000"><B>Delaware</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>0-19394</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>54-1248422</B></TD>
</TR>
<TR valign="top">
    <TD>(State or other Jurisdiction of Incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD>(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD>(IRS Employer Identification No.)</TD>
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    <TD width="49%">&nbsp;</TD>
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    <TD width="49%">&nbsp;</TD>
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    <TD style="border-bottom: 1px solid #000000"><B>2553 Dulles View Drive, #100<BR>
Herndon, Virginia
</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>20171</B></TD>
</TR>
<TR valign="top">
    <TD>(Address of Principal Executive Offices)</TD>
    <TD>&nbsp;</TD>
    <TD>(Zip Code)</TD>
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<P align="center" style="font-size: 10pt">Registrant&#146;s telephone number, including area code: <B>(703) 502-2000</B>


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    <TD nowrap>(Former name or former address if changed since last report.)</TD>
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<P align="left" style="font-size: 10pt">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:

<P align="left" style="font-size: 10pt">
<FONT face="Wingdings">&#111;</FONT> Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>


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<P align="left" style="font-size: 10pt"><B>Item&nbsp;1.01 Entry into a Material Definitive Agreement</B>


<P align="left" style="font-size: 10pt">On April&nbsp;23, 2009, GTSI Corp. (the &#147;Company&#148; or &#147;GTSI&#148;) and its wholly owned subsidiaries Technology Logistics, Inc.,
GTSI Professional Service, Inc., and GTSI Financial Services, Inc., the Lenders (as defined in the Credit Agreement
referenced below), and SunTrust Bank, in its capacity as Administrative Agent for the Lenders, executed a Sixth
Amendment to the Company&#146;s Credit Facilities Agreement, dated as of June&nbsp;2, 2006, as amended (the &#147;Credit Agreement&#148;).


<P align="left" style="font-size: 10pt">The Sixth Amendment modified Section&nbsp;8.4 of the Credit Agreement to permit GTSI to purchase its common stock before
June&nbsp;1, 2009 for an aggregate purchase price not to exceed $2,500,000, so long as no Default or Event of Default (as
such terms are defined in the Credit Agreement) exists or would result from any such purchase. See Item&nbsp;8.01 below.


<P align="left" style="font-size: 10pt"><B>Item&nbsp;5.05 Amendments to the Registrant&#146;s Code of Ethics, or Waiver of a Provision of the Code of Ethics.</B>


<P align="left" style="font-size: 10pt">On April&nbsp;23, 2009, the GTSI&#146;s Board of Directors adopted a new Code of Conduct and Ethics to replace the Company&#146;s
previous Code of Ethics. This new Code of Conduct and Ethics was adopted to enhance the Company&#146;s compliance efforts in
connection with Federal Acquisition Regulation&nbsp;52.203-13 (&#147;Contractor Code of Business Ethics and Conduct&#148;), which
became effective on December&nbsp;12, 2008, and to make other clarifications and updates to further enhance the Company&#146;s
Code of Ethics.


<P align="left" style="font-size: 10pt"><B>Item&nbsp;8.01 Other Events</B>


<P align="left" style="font-size: 10pt">GTSI is one of several awardees of the U.S. Communities (&#147;USC&#148;) Agreement, which is a pre-competed cooperative
purchasing agreement available to cities, counties, special districts (airport, water, etc.), state agencies, schools
(K-12), higher education, and large non-profits, such as hospitals and clinics, in all 50 U.S. states. The USC
Agreement is for information technology services and solutions for an initial four-year term with the USC having
extension options for three one-year periods. While the amount of actual purchases under the USC Agreement is
difficult to predict because it is an indefinite delivery/indefinite quantity contract, GTSI is obligated to pay a
minimum administrative fee to the USC if its annual program sales commitments of $75&nbsp;million in 2009, $80&nbsp;million in
2010 and $85&nbsp;million in 2011 are not met or exceeded. GTSI&#146;s USC Agreement is the Company&#146;s primary contract vehicle
for the state and local sales organization. In addition, the U.S. General Services Administration provides access to
state and local government agencies to utilize GSA Schedules. GTSI&#146;s current USC Agreement expires on April&nbsp;30, 2009.


<P align="left" style="font-size: 10pt">On April&nbsp;27, 2009, GTSI purchased 316,861 shares of its common stock for a total purchase price of $1,267,444 (or $4.00
per share) in a private transaction that had been approved by GTSI&#146;s Board of Directors. As of April&nbsp;24, 2009, GTSI
had 9,915,483 shares outstanding and its per share closing price was $4.16.


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<P align="left" style="font-size: 10pt"><B>Item&nbsp;9.01 Financial Statements and Exhibits.</B>


<P align="left" style="font-size: 10pt">(d)&nbsp;Exhibits


<P align="left" style="font-size: 10pt">14.1 GTSI&#146;s Code of Business Ethics &#038; Conduct (adopted April&nbsp;23, 2009)


<P align="left" style="font-size: 10pt"><B>SIGNATURES</B>


<P align="left" style="font-size: 10pt; text-indent: 4%">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.



<P align="left" style="margin-left:46%; font-size: 10pt"><B>GTSI Corp.</B>



<P align="left" style="margin-left:46%; font-size: 10pt">By: <U>/s/ James J. Leto&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U><BR>
&nbsp;&nbsp;&nbsp;&nbsp;James J. Leto<BR>
&nbsp;&nbsp;&nbsp;&nbsp;Chief Executive Officer<BR>


<P align="left" style="font-size: 10pt">Date: April&nbsp;28, 2009


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<P align="center" style="font-size: 10pt"><B>Exhibit&nbsp;Index</B>


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    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">14.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">GTSI&#146;s Code of Business Ethics &#038; Conduct (adopted April&nbsp;23, 2009)</TD>
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Form 8-K
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): April 23, 2009
GTSI Corp.
(Exact name of registrant as specified in its charter)
Delaware
0-19394
54-1248422
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
2553 Dulles View Drive, #100
Herndon, Virginia
20171
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code:
(703) 502-2000
(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:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
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 April 23, 2009, GTSI Corp. (the "Company" or "GTSI") and its wholly owned subsidiaries Technology Logistics, Inc.,
GTSI Professional Service, Inc., and GTSI Financial Services, Inc., the Lenders (as defined in the Credit Agreement
referenced below), and SunTrust Bank, in its capacity as Administrative Agent for the Lenders, executed a Sixth
Amendment to the Company's Credit Facilities Agreement, dated as of June 2, 2006, as amended (the "Credit Agreement").
The Sixth Amendment modified Section 8.4 of the Credit Agreement to permit GTSI to purchase its common stock before
June 1, 2009 for an aggregate purchase price not to exceed $2,500,000, so long as no Default or Event of Default (as
such terms are defined in the Credit Agreement) exists or would result from any such purchase. See Item 8.01 below.
Item 5.05 Amendments to the Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics.
On April 23, 2009, the GTSI's Board of Directors adopted a new Code of Conduct and Ethics to replace the Company's
previous Code of Ethics. This new Code of Conduct and Ethics was adopted to enhance the Company's compliance efforts in
connection with Federal Acquisition Regulation 52.203-13 ("Contractor Code of Business Ethics and Conduct"), which
became effective on December 12, 2008, and to make other clarifications and updates to further enhance the Company's
Code of Ethics.
Item 8.01 Other Events
GTSI is one of several awardees of the U.S. Communities ("USC") Agreement, which is a pre-competed cooperative
purchasing agreement available to cities, counties, special districts (airport, water, etc.), state agencies, schools
(K-12), higher education, and large non-profits, such as hospitals and clinics, in all 50 U.S. states. The USC
Agreement is for information technology services and solutions for an initial four-year term with the USC having
extension options for three one-year periods. While the amount of actual purchases under the USC Agreement is
difficult to predict because it is an indefinite delivery/indefinite quantity contract, GTSI is obligated to pay a
minimum administrative fee to the USC if its annual program sales commitments of $75 million in 2009, $80 million in
2010 and $85 million in 2011 are not met or exceeded. GTSI's USC Agreement is the Company's primary contract vehicle
for the state and local sales organization. In addition, the U.S. General Services Administration provides access to
state and local government agencies to utilize GSA Schedules. GTSI's current USC Agreement expires on April 30, 2009.
On April 27, 2009, GTSI purchased 316,861 shares of its common stock for a total purchase price of $1,267,444 (or $4.00
per share) in a private transaction that had been approved by GTSI's Board of Directors. As of April 24, 2009, GTSI
had 9,915,483 shares outstanding and its per share closing price was $4.16.
2
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits
14.1 GTSI's Code of Business Ethics & Conduct (adopted April 23, 2009)
SIGNATURES
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.
GTSI Corp.
By:
/s/ James J. Leto
James J. Leto
Chief Executive Officer
Date: April 28, 2009
3
Exhibit Index
Exhibit Number
Description
14.1
GTSI's Code of Business Ethics & Conduct (adopted April 23, 2009)
4