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<P>As filed with the Securities and Exchange Commission on April&nbsp;23, 2001

<DIV align="right">
Registration No.&nbsp;333-
</DIV>


<P align="center">SECURITIES AND EXCHANGE COMMISSION<BR>
Washington, D.C. 20549<BR>
________________


<P align="center"><B>FORM S-8</B>


<P align="center">REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933



<P align="center"><B>IMPSAT FIBER NETWORKS, INC.</B><BR>
(Exact Name of registrant as specified in its charter)


<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="65%" align="center">
<TR valign="bottom">
        <TD width="61%">&nbsp;</TD>
        <TD width="5%">&nbsp;</TD>
        <TD width="34%">&nbsp;</TD>
</TR>
<TR valign="bottom">
        <TD valign="top" align=center><FONT size="2"><B>Delaware</B></FONT></TD>
        <TD></TD>
        <TD  align="center" valign="top"><FONT size="2">
<B>52-1910372</B></FONT></TD>
</TR>
<TR valign="bottom">
        <TD valign="top" align=center><FONT size="2"><HR size="1" WIDTH=40%></FONT></TD>
        <TD></TD>
        <TD  align="center" valign="top"><FONT size="2">
<HR size="1" WIDTH=40%></FONT></TD>
</TR>
<TR valign="bottom">
        <TD valign="top" align=center><FONT size="2">(State or other jurisdiction of
<BR>incorporation or organization)</FONT></TD>
        <TD></TD>
        <TD  align="center" valign="top"><FONT size="2">
(I.R.S. Employer
<BR>Identification No.)</FONT></TD>
</TR>
</TABLE>
</CENTER>

<P align="center"><B>Al&#233;rez Pareja 256 (1107)<BR>
Buenos Aires, Argentina</B><CENTER>
<HR SIZE=1 WIDTH=40%>
(Address, including zip code, of principal executive offices)
</CENTER>



<P align="center"><B>IMPSAT Fiber Networks, Inc. 1998 Stock Option Plan<BR>
IMPSAT Fiber Networks, Inc. 1999 Nonstatutory Stock Option Plan</B>

<CENTER>
<HR SIZE=1 WIDTH=70%>
(Full title of the plans)</CENTER>



<P align="center"><B>Enrique Diz<BR>
IMPSAT USA, Inc.<BR>
2040 North Dixie Highway<BR>
Wilton Manors, Florida 33305<BR>
(954)&nbsp;779-7171</B>

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<HR SIZE=1 WIDTH=40%>
</CENTER>
<CENTER>
(Name, address, including zip code, and telephone number including area code, of agent for service)
</CENTER>

<P align="center"><B>Copy to:<BR>
Neil M. Goodman, Esq.<BR>
Arnold &#38; Porter<BR>
555 12th Street, N.W.<BR>
Washington, D.C. 20004<BR>
(202)&nbsp;942-5191</B>

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<P>


<P align="center"><B>CALCULATION OF REGISTRATION FEE</B>

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<TABLE cellspacing="0" border="0" cellpadding="0" width="95%" align="center">
<TR valign="bottom">
        <TD width="51%">&nbsp;</TD>
        <TD width="3%">&nbsp;</TD>
        <TD width="4%">&nbsp;</TD>
        <TD width="1%">&nbsp;</TD>
        <TD width="5%">&nbsp;</TD>
        <TD width="3%">&nbsp;</TD>
        <TD width="1%">&nbsp;</TD>
        <TD width="1%">&nbsp;</TD>
        <TD width="2%">&nbsp;</TD>
        <TD width="3%">&nbsp;</TD>
        <TD width="6%">&nbsp;</TD>
        <TD width="1%">&nbsp;</TD>
        <TD width="6%">&nbsp;</TD>
        <TD width="3%">&nbsp;</TD>
        <TD width="4%">&nbsp;</TD>
        <TD width="1%">&nbsp;</TD>
        <TD width="5%">&nbsp;</TD>
</TR>
<TR valign="bottom">
        <TD colspan="17"><HR size="1"></TD>
</TR>
<TR valign="bottom">
        <TD></TD>
        <TD></TD>
        <TD></TD>
        <TD></TD>
        <TD></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Proposed Maximum</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Proposed Maximum</B></FONT></TD>
</TR>
<TR valign="bottom">
        <TD></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Amount to be</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Offering Price Per</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Aggregate Offering</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Amount of</B></FONT></TD>
</TR>
<TR valign="bottom">
        <TD nowrap align="center"><FONT size="2"><B>Title of Securities to be Registered</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Registered (1)</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Unit (2)</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Price (2)</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center" colspan="3"><FONT size="2"><B>Registration Fee</B></FONT></TD>
</TR>
<TR valign="bottom">
        <TD colspan="17"><HR size="1"></TD>
</TR>

<TR valign="bottom">
        <TD NOWRAP><FONT size="2">Common Stock, $0.01 par value per share</FONT></TD>
        <TD></TD>
        <TD></TD>
        <TD align="right"><FONT size="2">5,131,230</FONT></TD>
        <TD></TD>
        <TD></TD>
        <TD align="right"><FONT size="2">$</FONT></TD>
        <TD align="right"><FONT size="2">4.24</FONT></TD>
        <TD></TD>
        <TD></TD>
        <TD align="right"><FONT size="2">$</FONT></TD>
        <TD align="right"><FONT size="2">21,756,415</FONT></TD>
        <TD></TD>
        <TD></TD>
        <TD align="right"><FONT size="2">$</FONT></TD>
        <TD align="right"><FONT size="2">5,439.10</FONT></TD>
        <TD></TD>
</TR>
<TR valign="bottom">
        <TD colspan="17"><HR size="1"></TD>
</TR>
</TABLE>
</CENTER>

<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
<TR valign="top">
        <TD width="1%" align="left">(1)</TD>
        <TD width="3%">&nbsp;</TD>
        <TD width="96%">Pursuant to Rule&nbsp;416, promulgated under the Securities Act of 1933, as
amended, an additional indeterminable number of shares of Common Stock is
being registered to cover any adjustment in the number of shares of Common
Stock issuable pursuant to the anti-dilution provisions of the 1998 Stock
Option Plan and the 1999 Nonstatutory Stock Option Plan (the &#147;Option
Plans&#148;).</TD>
</TR>
<TR>
        <TD>&nbsp;</TD>
</TR>
<TR valign="top">
        <TD width="1%" align="left">(2)</TD>
        <TD width="3%">&nbsp;</TD>
        <TD width="96%">Estimated solely for the purpose of determining the registration fee in
accordance with Rule&nbsp;457(h) based on, with respect to the 5,131,230 shares
of the Registrant&#146;s Common Stock issuable pursuant to the Option Plans,
the average of the high and low sale prices of the Common Stock as
reported on April&nbsp;19, 2001, on the Nasdaq National Market, which date is
within 5 business days prior to the date of the filing of this
Registration Statement.</TD>
</TR>
</TABLE>

<BR CLEAR="ALL">

<P align="center">&nbsp;


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<P align="center"><B>PART II<BR>
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>


<P><B>Item&nbsp;3.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Incorporation of Documents by Reference.</B>


<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed by IMPSAT Fiber Networks, Inc. (&#147;Registrant&#148;
or &#147;Company&#148;) with the Securities and Exchange Commission (the &#147;Commission&#148;)
pursuant to the Securities Exchange Act of 1934, as amended (the &#147;Exchange
Act&#148;) (File No.&nbsp;333-12977), are incorporated herein by reference and made a
part hereof:

<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="95%" align="center">
<TR valign="bottom">
        <TD width="5%">&nbsp;</TD>
        <TD width="2%">&nbsp;</TD>
        <TD width="93%">&nbsp;</TD>
</TR>
<TR valign="bottom">
        <TD valign="top">(a)</TD>
        <TD></TD>
        <TD  align="left" valign="top">
The Company&#146;s Annual Report on Form&nbsp;10-K for the year ended
December&nbsp;31, 2000.</TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top">(b)</TD>
        <TD></TD>
        <TD  align="left" valign="top">
The description of the Common Stock of the Company, par value
$0.01 per share, contained in a registration statement on Form&nbsp;8-A
filed by the Company on January&nbsp;24, 2000, and any amendments or
reports filed for the purpose of updating such description.</TD>
</TR>
</TABLE>
</CENTER>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents and reports subsequently filed by the Company with the
Commission after the date of this Registration Statement pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a
post-effective amendment which indicates that all Common Stock offered hereby
has been sold or which deregisters such Common Stock then remaining unsold,
shall be deemed to be incorporated in this Registration Statement by reference
and shall be a part hereof from the date of filing of such documents. Any
statement contained in a document incorporated or deemed to be incorporated by
reference in this Registration Statement shall be deemed to be modified or
superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference in this Registration
Statement modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or so
superseded, to constitute a part of this Registration Statement.


<P><B>Item&nbsp;4.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Description of Securities.</B>


<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not Applicable.


<P><B>Item&nbsp;5.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Interests of Named Experts and Counsel.</B>


<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not Applicable.

<P align="center">&nbsp;


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<P><B>Item&nbsp;6.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Indemnification of Directors and Officers.</B>


<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145 of the Delaware General Corporation Law (the &#147;DGCL&#148;) sets
forth conditions and limitations governing the indemnification of officers and
directors of the Company and certain other persons. Section&nbsp;145 of the DGCL is
hereby incorporated herein by reference. The Company&#146;s Certificate of
Incorporation and Bylaws provide that the Company shall indemnify any person to
the full extent permitted by the DGCL.

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar as indemnification for liabilities arising under the Securities
Act of 1933, as amended (the &#147;Securities Act&#148;), may be permitted to directors,
officers or controlling persons of the Company pursuant to the Company&#146;s
Certificate of Incorporation and Bylaws and the DGCL, the Company has been
informed that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Securities Act and
is therefore unenforceable.

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As authorized by Section&nbsp;102(b)(7) of the DGCL, the Company&#146;s Certificate
of Incorporation also limits, to the fullest extent permitted by Delaware law,
a director&#146;s liability for monetary damages for breach of fiduciary duty as a
director. The effect of this provision is to eliminate the rights of the
Company and its stockholders (through stockholders&#146; derivative suits on behalf
of the Company) to recover monetary damages against a director for breach of
the fiduciary duty of care as a director (including breaches resulting from
negligent or grossly negligent behavior) except in certain limited situations.
This provision does not eliminate a director&#146;s duty of care nor does it limit
or eliminate the rights of the Company or any stockholder to seek non-monetary
relief or remedies such as an injunction or rescission in the event of a
director&#146;s breach of the duty of care. These provisions will not alter the
liability of directors under federal securities laws.


<P><B>Item&nbsp;7.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exemption from Registration Claimed</B>


<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not Applicable.


<P><B>Item&nbsp;8.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exhibits</B>


<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The exhibits listed on the Exhibit&nbsp;Index on page II-7 of this Registration
Statement are filed herewith or are incorporated herein by reference to other
filings.

<P align="center">2


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<P><B>Item&nbsp;9.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Undertakings</B>


<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant hereby undertakes:

<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="95%" align="center">
<TR valign="bottom">
        <TD width="5%">&nbsp;</TD>
        <TD width="2%">&nbsp;</TD>
        <TD width="93%">&nbsp;</TD>
</TR>
<TR valign="bottom">
        <TD valign="top">1.</TD>
        <TD></TD>
        <TD  align="left" valign="top">
To file, during any period in which offers or sales are being
made, a post-effective amendment to this Registration Statement:</TD>
</TR>
</TABLE>
</CENTER>


<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="80%" align="center">
<TR valign="bottom">
        <TD width="5%">&nbsp;</TD>
        <TD width="2%">&nbsp;</TD>
        <TD width="93%">&nbsp;</TD>
</TR>
<TR valign="bottom">
        <TD valign="top">(i)</TD>
        <TD></TD>
        <TD  align="left" valign="top">
To include any prospectus required by Section
10(a)(3) of the Securities Act of 1933, as amended;</TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top">(ii)</TD>
        <TD></TD>
        <TD  align="left" valign="top">
To reflect in the prospectus any facts or
events arising after the effective date of the Registration
Statement (or the most recent post-effective amendment
thereof) which, individually or in the aggregate, represent a
fundamental change in the information set forth in the
Registration Statement. Notwithstanding the foregoing, any
increase or decrease in volume of securities offered (if the
total dollar value of securities offered would not exceed
that which was registered) and any deviation from the low or
high end of the estimated maximum offering range may be
reflected in the form of prospectus filed with the Commission
pursuant to Rule&nbsp;424(b) if, in the aggregate, the changes in
volume and price represent no more than a 20% change in the
maximum aggregate offering price set forth in the
&#147;Calculation of Registration Fee&#148; table in the effective
registration statement;</TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top">(iii)</TD>
        <TD></TD>
        <TD  align="left" valign="top">
To include any material information with
respect to the plan of distribution not previously disclosed
in the Registration Statement or any material change to such
information in the Registration Statement;</TD>
</TR>
</TABLE>
</CENTER>

<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="95%" align="center">
<TR valign="bottom">
        <TD width="5%">&nbsp;</TD>
        <TD width="2%">&nbsp;</TD>
        <TD width="93%">&nbsp;</TD>
</TR>
<TR valign="bottom">
        <TD valign="top"></TD>
        <TD></TD>
        <TD  align="left" valign="top">
provided, however, that paragraphs (i)&nbsp;and (ii)&nbsp;do not apply if
the information required to be included in a post-effective
amendment by those paragraphs is contained in periodic reports
filed with or furnished to the Commission by the Registrant
pursuant to Section&nbsp;13 or Section&nbsp;15(d) of the Securities Exchange
Act of 1934, as amended (the &#147;Exchange Act&#148;) that are incorporated
by reference in the Registration Statement;</TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top">2.</TD>
        <TD></TD>
        <TD  align="left" valign="top">
That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed
to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time
shall be deemed to be the initial bona fide offering thereof;</TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top">3.</TD>
        <TD></TD>
        <TD  align="left" valign="top">
To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold
at the termination of the offering;</TD>
</TR>
</TABLE>
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<P align="center">3


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<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="95%" align="center">
<TR valign="bottom">
        <TD width="5%">&nbsp;</TD>
        <TD width="2%">&nbsp;</TD>
        <TD width="93%">&nbsp;</TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top">4.</TD>
        <TD></TD>
        <TD  align="left" valign="top">
That, for purposes of determining any liability under the
Securities Act, each filing of the Company&#146;s annual report pursuant
to section 13(a) or section 15(d) of the Exchange Act that is
incorporated by reference in the Registration Statement shall be
deemed to be a new registration statement relating to the securities
offered therein, and the offering of such new securities at that
time shall be deemed to be the initial bona fide offering thereof.</TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top">5.</TD>
        <TD></TD>
        <TD  align="left" valign="top">
Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and
controlling persons of the Registrant pursuant to the foregoing
provisions, or otherwise, the Registrant has been advised that in
the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that
a claim for indemnification against such liabilities (other than the
payment by the Registrant of expenses incurred or paid by a
director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by
such director, officer or controlling person in connection with the
securities being registered, the Registrant will, unless in the
opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy
as expressed in the Securities Act and will be governed by the final
adjudication of such issue.</TD>
</TR>
</TABLE>
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<P align="center">4


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<P align="center"><B>SIGNATURES</B>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, as amended,
the Company certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form&nbsp;S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned thereunto
duly authorized in the City of Buenos Aires, in the Republic of Argentina, on
April&nbsp;23, 2001.


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
<TR valign="top">
        <TD width="50%">&nbsp;</TD>
        <TD width="50%"><FONT size="3">IMPSAT FIBER NETWORKS, INC.</TD>
</TR>
</TABLE>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0">
<TR valign="top">
        <TD width="50%">&nbsp;</TD>
        <TD width="50%"><FONT size="3">By:&nbsp;&nbsp;&nbsp; <U>/s/ Ricardo A. Verdaguer&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U><BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ricardo A. Verdaguer<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<I>President and Chief Executive Officer</I></TD>
</TR>
</TABLE>



<P align="center">5


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<P align="center"><B>POWER OF ATTORNEY</B>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL MEN BY THESE PRESENTS, that each undersigned director and/or
officer of IMPSAT Fiber Networks, Inc. a corporation organized under the laws
of the state of Delaware (the &#147;Corporation&#148;), hereby constitutes and appoints
Guillermo Jofr&#233;, Guillermo V. Pardo, Neil M. Goodman and Darren C. Skinner and
each of them (with full power to each of them to act alone), his or her true
and lawful attorneys-in-fact and agents, with full power of substitution and
resubstitution, for him or her on his or her behalf and in his or her name,
place and stead, in any and all capacities, to sign, execute and affix his or
her seal to and file with the Securities and Exchange Commission (or any other
governmental or regulatory authority) a Registration Statement on Form&nbsp;S-8 or
any other appropriate form and all amendments or supplements (including
post-effective amendments) thereto with all exhibits and any and all documents
required to be filed therewith or with respect thereto, relating to the
registration of shares of common stock, par value $0.01 per share, of the
Corporation (the &#147;Common Stock&#148;) issuable pursuant to the Corporation&#146;s 1998
Stock Option Plan and the Corporation&#146;s 1999 Nonstatutory Stock Option Plan,
and grants to each of them full power and authority to do and to perform each
and every act and thing requisite and necessary to be done in and about the
premises in order to effectuate the same as fully and to all intents and
purposes as he himself or she herself might or could do if personally present,
hereby ratifying and confirming all that said attorneys-in-fact and agents, or
any of them, may lawfully do or cause to be done by virtue hereof.

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities and on the dates indicated:</B>

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<TABLE cellspacing="0" border="0" cellpadding="0" width="85%" align="center">
<TR valign="bottom">
        <TD width="32%">&nbsp;</TD>
        <TD width="5%">&nbsp;</TD>
        <TD width="45%">&nbsp;</TD>
        <TD width="5%">&nbsp;</TD>
        <TD width="13%">&nbsp;</TD>
</TR>
<TR valign="bottom">
        <TD nowrap align="center"><FONT size="2"><B>Signature</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center"><FONT size="2"><B>Title</B></FONT></TD>
        <TD></TD>
        <TD nowrap align="center"><FONT size="2"><B>Date</B></FONT></TD>
</TR>
<TR valign="bottom">
        <TD nowrap align="center"><HR size="1"></TD>
        <TD></TD>
        <TD nowrap align="center"><HR size="1"></TD>
        <TD></TD>
        <TD nowrap align="center"><HR size="1"></TD>
</TR>

<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Enrique M. Pescarmona</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Chairman of the Board of Directors of
IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Ricardo A. Verdagaer</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director, President and Chief
Executive Officer of IMPSAT Fiber
Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Guillermo Jofre</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Chief Financial Officer of IMPSAT
Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Jose R. Torres</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Vice President, Administration and
Chief Accounting Officer of IMPSAT
Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Roberto Vivo</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director of IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Alexander Rivelis</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director and Vice President, Carrier&#146;s
Carrier of IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Lucas Pescarmona</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director of IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Sofia Pescarmona</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director of IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Stephen R. Munger</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director of IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">/s/ Jer&#243;nimo Bosch</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director of IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Carlos Zamora</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director of IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">John McElligott</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Director of IMPSAT Fiber Networks, Inc.
</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">April&nbsp;23, 2001</FONT></TD>
</TR>
</TABLE>
</CENTER>
<P align="center">6


<!-- PAGEBREAK -->
<P><HR noshade><P>


<P align="center"><B>INDEX TO EXHIBITS</B>

<CENTER>
<TABLE cellspacing="0" border="0" cellpadding="0" width="85%" align="center">
<TR valign="bottom">
        <TD width="17%">&nbsp;</TD>
        <TD width="5%">&nbsp;</TD>
        <TD width="78%">&nbsp;</TD>
</TR>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Exhibit&nbsp;4.1</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Certificate of Incorporation, as restated and amended to
date, of the Registrant (incorporated herein by reference to
the Registrant&#146;s Registration Statement on Form&nbsp;S-1 (File No.
333-88389) declared effective by the Commission on January
31, 2000).</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Exhibit&nbsp;4.2</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Bylaws, as restated and amended to date, of the Registrant
(incorporated herein by reference to the Registrant&#146;s
Registration Statement on Form&nbsp;S-1 (File No.&nbsp;333-88389)
declared effective by the Commission on January&nbsp;31, 2000).</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Exhibit&nbsp;4.3</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
IMPSAT Fiber Networks, Inc. 1998 Stock Option Plan
(incorporated herein by reference to the Registrant&#146;s Annual
Report on Form&nbsp;10-K for 1998, filed with the Commission on
March&nbsp;31, 1999).</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Exhibit&nbsp;4.4</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
IMPSAT Fiber Networks, Inc. 1999 Nonstatutory Stock Option
Plan (incorporated herein by reference to the Registrant&#146;s
Registration Statement on Form&nbsp;S-1 (File No.&nbsp;333-88389)
declared effective by the Commission on January&nbsp;31, 2000).</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Exhibit&nbsp;5</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Opinion of Arnold &#38; Porter, filed herewith.</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Exhibit&nbsp;23.1</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Consent of Arnold &#38; Porter, included in the opinion filed as
Exhibit&nbsp;5 hereto.</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Exhibit&nbsp;23.2</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Consent of Deloitte &#38; Touche LLP, Miami, Florida, filed
herewith.</FONT></TD>
</TR>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR><TD><TR><TD><TR><TD><TR><TD>
<TR valign="bottom">
        <TD valign="top"><FONT size="2">Exhibit&nbsp;24</FONT></TD>
        <TD></TD>
        <TD  align="left" valign="top"><FONT size="2">
Powers of Attorney of certain directors of the Registrant
(included on the signature page hereto).</FONT></TD>
</TR>
</TABLE>
</CENTER>

<P align="center">7
</BODY>
</HTML>
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{"company-data": {"conformed-name": "IMPSAT FIBER NETWORKS INC", "cik": "0001022329", "assigned-sic": "4899", "irs-number": "521910372", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-59370", "film-number": "1608774"}, "business-address": {"street1": "ONE FINANCIAL PLAZA", "city": "FT LAUDERDALE", "state": "FL", "zip": "33394", "phone": "5413004007"}, "mail-address": {"street1": "ONE FINANCIAL PLAZA", "city": "FT LAUDERDALE", "state": "FL", "zip": "33394"}, "former-company": {"former-conformed-name": "IMPSAT CORP", "date-changed": "19960905"}}
s-8
As filed with the Securities and Exchange Commission on April 23, 2001
Registration No. 333-
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
________________
FORM S-8
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
IMPSAT FIBER NETWORKS, INC.
(Exact Name of registrant as specified in its charter)
Delaware
52-1910372
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
Alérez Pareja 256 (1107)
Buenos Aires, Argentina
(Address, including zip code, of principal executive offices)
IMPSAT Fiber Networks, Inc. 1998 Stock Option Plan
IMPSAT Fiber Networks, Inc. 1999 Nonstatutory Stock Option Plan
(Full title of the plans)
Enrique Diz
IMPSAT USA, Inc.
2040 North Dixie Highway
Wilton Manors, Florida 33305
(954) 779-7171
(Name, address, including zip code, and telephone number including area code, of agent for service)
Copy to:
Neil M. Goodman, Esq.
Arnold & Porter
555 12th Street, N.W.
Washington, D.C. 20004
(202) 942-5191
CALCULATION OF REGISTRATION FEE
Proposed Maximum
Proposed Maximum
Amount to be
Offering Price Per
Aggregate Offering
Amount of
Title of Securities to be Registered
Registered (1)
Unit (2)
Price (2)
Registration Fee
Common Stock, $0.01 par value per share
5,131,230
$
4.24
$
21,756,415
$
5,439.10
(1)
Pursuant to Rule 416, promulgated under the Securities Act of 1933, as
amended, an additional indeterminable number of shares of Common Stock is
being registered to cover any adjustment in the number of shares of Common
Stock issuable pursuant to the anti-dilution provisions of the 1998 Stock
Option Plan and the 1999 Nonstatutory Stock Option Plan (the "Option
Plans").
(2)
Estimated solely for the purpose of determining the registration fee in
accordance with Rule 457(h) based on, with respect to the 5,131,230 shares
of the Registrant's Common Stock issuable pursuant to the Option Plans,
the average of the high and low sale prices of the Common Stock as
reported on April 19, 2001, on the Nasdaq National Market, which date is
within 5 business days prior to the date of the filing of this
Registration Statement.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3.       Incorporation of Documents by Reference.
The following documents filed by IMPSAT Fiber Networks, Inc. ("Registrant"
or "Company") with the Securities and Exchange Commission (the "Commission")
pursuant to the Securities Exchange Act of 1934, as amended (the "Exchange
Act") (File No. 333-12977), are incorporated herein by reference and made a
part hereof:
(a)
The Company's Annual Report on Form 10-K for the year ended
December 31, 2000.
(b)
The description of the Common Stock of the Company, par value
$0.01 per share, contained in a registration statement on Form 8-A
filed by the Company on January 24, 2000, and any amendments or
reports filed for the purpose of updating such description.
All documents and reports subsequently filed by the Company with the
Commission after the date of this Registration Statement pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a
post-effective amendment which indicates that all Common Stock offered hereby
has been sold or which deregisters such Common Stock then remaining unsold,
shall be deemed to be incorporated in this Registration Statement by reference
and shall be a part hereof from the date of filing of such documents. Any
statement contained in a document incorporated or deemed to be incorporated by
reference in this Registration Statement shall be deemed to be modified or
superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any other subsequently filed document which
also is or is deemed to be incorporated by reference in this Registration
Statement modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or so
superseded, to constitute a part of this Registration Statement.
Item 4.       Description of Securities.
Not Applicable.
Item 5.       Interests of Named Experts and Counsel.
Not Applicable.
Item 6.       Indemnification of Directors and Officers.
Section 145 of the Delaware General Corporation Law (the "DGCL") sets
forth conditions and limitations governing the indemnification of officers and
directors of the Company and certain other persons. Section 145 of the DGCL is
hereby incorporated herein by reference. The Company's Certificate of
Incorporation and Bylaws provide that the Company shall indemnify any person to
the full extent permitted by the DGCL.
Insofar as indemnification for liabilities arising under the Securities
Act of 1933, as amended (the "Securities Act"), may be permitted to directors,
officers or controlling persons of the Company pursuant to the Company's
Certificate of Incorporation and Bylaws and the DGCL, the Company has been
informed that in the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the Securities Act and
is therefore unenforceable.
As authorized by Section 102(b)(7) of the DGCL, the Company's Certificate
of Incorporation also limits, to the fullest extent permitted by Delaware law,
a director's liability for monetary damages for breach of fiduciary duty as a
director. The effect of this provision is to eliminate the rights of the
Company and its stockholders (through stockholders' derivative suits on behalf
of the Company) to recover monetary damages against a director for breach of
the fiduciary duty of care as a director (including breaches resulting from
negligent or grossly negligent behavior) except in certain limited situations.
This provision does not eliminate a director's duty of care nor does it limit
or eliminate the rights of the Company or any stockholder to seek non-monetary
relief or remedies such as an injunction or rescission in the event of a
director's breach of the duty of care. These provisions will not alter the
liability of directors under federal securities laws.
Item 7.       Exemption from Registration Claimed
Not Applicable.
Item 8.       Exhibits
The exhibits listed on the Exhibit Index on page II-7 of this Registration
Statement are filed herewith or are incorporated herein by reference to other
filings.
2
Item 9.       Undertakings
The Registrant hereby undertakes:
1.
To file, during any period in which offers or sales are being
made, a post-effective amendment to this Registration Statement:
(i)
To include any prospectus required by Section
10(a)(3) of the Securities Act of 1933, as amended;
(ii)
To reflect in the prospectus any facts or
events arising after the effective date of the Registration
Statement (or the most recent post-effective amendment
thereof) which, individually or in the aggregate, represent a
fundamental change in the information set forth in the
Registration Statement. Notwithstanding the foregoing, any
increase or decrease in volume of securities offered (if the
total dollar value of securities offered would not exceed
that which was registered) and any deviation from the low or
high end of the estimated maximum offering range may be
reflected in the form of prospectus filed with the Commission
pursuant to Rule 424(b) if, in the aggregate, the changes in
volume and price represent no more than a 20% change in the
maximum aggregate offering price set forth in the
"Calculation of Registration Fee" table in the effective
registration statement;
(iii)
To include any material information with
respect to the plan of distribution not previously disclosed
in the Registration Statement or any material change to such
information in the Registration Statement;
provided, however, that paragraphs (i) and (ii) do not apply if
the information required to be included in a post-effective
amendment by those paragraphs is contained in periodic reports
filed with or furnished to the Commission by the Registrant
pursuant to Section 13 or Section 15(d) of the Securities Exchange
Act of 1934, as amended (the "Exchange Act") that are incorporated
by reference in the Registration Statement;
2.
That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed
to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time
shall be deemed to be the initial bona fide offering thereof;
3.
To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold
at the termination of the offering;
3
4.
That, for purposes of determining any liability under the
Securities Act, each filing of the Company's annual report pursuant
to section 13(a) or section 15(d) of the Exchange Act that is
incorporated by reference in the Registration Statement shall be
deemed to be a new registration statement relating to the securities
offered therein, and the offering of such new securities at that
time shall be deemed to be the initial bona fide offering thereof.
5.
Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and
controlling persons of the Registrant pursuant to the foregoing
provisions, or otherwise, the Registrant has been advised that in
the opinion of the Securities and Exchange Commission such
indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that
a claim for indemnification against such liabilities (other than the
payment by the Registrant of expenses incurred or paid by a
director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by
such director, officer or controlling person in connection with the
securities being registered, the Registrant will, unless in the
opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy
as expressed in the Securities Act and will be governed by the final
adjudication of such issue.
4
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, as amended,
the Company certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned thereunto
duly authorized in the City of Buenos Aires, in the Republic of Argentina, on
April 23, 2001.
IMPSAT FIBER NETWORKS, INC.
By:
/s/ Ricardo A. Verdaguer
Ricardo A. Verdaguer
President and Chief Executive Officer
5
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that each undersigned director and/or
officer of IMPSAT Fiber Networks, Inc. a corporation organized under the laws
of the state of Delaware (the "Corporation"), hereby constitutes and appoints
Guillermo Jofré, Guillermo V. Pardo, Neil M. Goodman and Darren C. Skinner and
each of them (with full power to each of them to act alone), his or her true
and lawful attorneys-in-fact and agents, with full power of substitution and
resubstitution, for him or her on his or her behalf and in his or her name,
place and stead, in any and all capacities, to sign, execute and affix his or
her seal to and file with the Securities and Exchange Commission (or any other
governmental or regulatory authority) a Registration Statement on Form S-8 or
any other appropriate form and all amendments or supplements (including
post-effective amendments) thereto with all exhibits and any and all documents
required to be filed therewith or with respect thereto, relating to the
registration of shares of common stock, par value $0.01 per share, of the
Corporation (the "Common Stock") issuable pursuant to the Corporation's 1998
Stock Option Plan and the Corporation's 1999 Nonstatutory Stock Option Plan,
and grants to each of them full power and authority to do and to perform each
and every act and thing requisite and necessary to be done in and about the
premises in order to effectuate the same as fully and to all intents and
purposes as he himself or she herself might or could do if personally present,
hereby ratifying and confirming all that said attorneys-in-fact and agents, or
any of them, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities and on the dates indicated:
Signature
Title
Date
/s/ Enrique M. Pescarmona
Chairman of the Board of Directors of
IMPSAT Fiber Networks, Inc.
April 23, 2001
/s/ Ricardo A. Verdagaer
Director, President and Chief
Executive Officer of IMPSAT Fiber
Networks, Inc.
April 23, 2001
/s/ Guillermo Jofre
Chief Financial Officer of IMPSAT
Fiber Networks, Inc.
April 23, 2001
/s/ Jose R. Torres
Vice President, Administration and
Chief Accounting Officer of IMPSAT
Fiber Networks, Inc.
April 23, 2001
/s/ Roberto Vivo
Director of IMPSAT Fiber Networks, Inc.
April 23, 2001
/s/ Alexander Rivelis
Director and Vice President, Carrier's
Carrier of IMPSAT Fiber Networks, Inc.
April 23, 2001
/s/ Lucas Pescarmona
Director of IMPSAT Fiber Networks, Inc.
April 23, 2001
/s/ Sofia Pescarmona
Director of IMPSAT Fiber Networks, Inc.
April 23, 2001
/s/ Stephen R. Munger
Director of IMPSAT Fiber Networks, Inc.
April 23, 2001
/s/ Jerónimo Bosch
Director of IMPSAT Fiber Networks, Inc.
April 23, 2001
Carlos Zamora
Director of IMPSAT Fiber Networks, Inc.
April 23, 2001
John McElligott
Director of IMPSAT Fiber Networks, Inc.
April 23, 2001
6
INDEX TO EXHIBITS
Exhibit 4.1
Certificate of Incorporation, as restated and amended to
date, of the Registrant (incorporated herein by reference to
the Registrant's Registration Statement on Form S-1 (File No.
333-88389) declared effective by the Commission on January
31, 2000).
Exhibit 4.2
Bylaws, as restated and amended to date, of the Registrant
(incorporated herein by reference to the Registrant's
Registration Statement on Form S-1 (File No. 333-88389)
declared effective by the Commission on January 31, 2000).
Exhibit 4.3
IMPSAT Fiber Networks, Inc. 1998 Stock Option Plan
(incorporated herein by reference to the Registrant's Annual
Report on Form 10-K for 1998, filed with the Commission on
March 31, 1999).
Exhibit 4.4
IMPSAT Fiber Networks, Inc. 1999 Nonstatutory Stock Option
Plan (incorporated herein by reference to the Registrant's
Registration Statement on Form S-1 (File No. 333-88389)
declared effective by the Commission on January 31, 2000).
Exhibit 5
Opinion of Arnold & Porter, filed herewith.
Exhibit 23.1
Consent of Arnold & Porter, included in the opinion filed as
Exhibit 5 hereto.
Exhibit 23.2
Consent of Deloitte & Touche LLP, Miami, Florida, filed
herewith.
Exhibit 24
Powers of Attorney of certain directors of the Registrant
(included on the signature page hereto).
7