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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt"><B>&nbsp;</B></FONT></P>

<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 12pt; margin-bottom: 3pt"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="letter-spacing: -0.1pt"><B>UNITED
STATES</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; color: Red"></P>

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<P STYLE="margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;FORM 8-K</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CURRENT REPORT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Pursuant to Section 13 OR 15(d) of The
Securities Exchange Act of 1934</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Date of Report (Date of earliest event
reported): March 15, 2012</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><I>&nbsp;&nbsp;</I></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ULTRA PETROLEUM CORP.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>(Exact name of registrant as specified
in its charter)&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>&nbsp;</I></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
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    <TD STYLE="width: 34%; padding-right: 5.4pt; padding-left: 5.4pt; font-weight: bold; text-align: center">Yukon Territory, Canada</TD>
    <TD STYLE="width: 33%; padding-right: 5.4pt; padding-left: 5.4pt; font-weight: bold; text-align: center">001-33614</TD>
    <TD STYLE="width: 33%; padding-right: 5.4pt; padding-left: 5.4pt; font-weight: bold; text-align: center">N/A</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-style: italic; text-align: center"><FONT STYLE="letter-spacing: -0.1pt"><I>(State or other jurisdiction</I></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-style: italic; text-align: center"><FONT STYLE="letter-spacing: -0.1pt"><I>(Commission File Number 001-33614)</I></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-style: italic; text-align: center"><FONT STYLE="letter-spacing: -0.1pt"><I>(I.R.S. Employer</I></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-style: italic; text-align: center">of incorporation)</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-style: italic; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; font-style: italic; text-align: center">Identification No.)</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt"><I>&#9;</I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt"><I>&nbsp;</I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt"><I>&nbsp;</I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>400 N. Sam Houston Parkway East, Suite
1200</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Houston, Texas 77060</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>(Address of principal executive offices,
including zip code)</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 10pt"><I>Registrant's
telephone number, including area code</I></FONT>: <FONT STYLE="font-size: 10pt"> <B>(281) 876-0120</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt"><I>&nbsp;</I></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt">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></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 26.25pt; text-indent: -26.25pt"><FONT STYLE="font-family: Wingdings">o</FONT>
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 26.25pt; text-indent: -26.25pt"><FONT STYLE="font-family: Wingdings">o</FONT>
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 26.25pt; text-indent: -26.25pt"><FONT STYLE="font-family: Wingdings">o</FONT>
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 26.25pt; text-indent: -26.25pt"><FONT STYLE="font-family: Wingdings">o</FONT>
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt">&nbsp;</FONT></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 13.5pt">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: -1in"><FONT STYLE="letter-spacing: -0.1pt"><B>Item
5.02(b) &#9;Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-indent: -1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt">On
March 15, 2012, Stuart E. Nance, Vice President of Marketing of Ultra Petroleum Corp. (the&nbsp;&ldquo;<U>Company</U></FONT>&rdquo;)
tendered his resignation to the Company, effective March 28, 2012.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">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.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 50%; padding-right: 0; padding-left: 0; font-weight: bold">ULTRA PETROLEUM CORP.</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">March 20, 2012</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">By: <U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/s/ <I>Garrett B. Smith</I>&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>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">Name: Garrett B. Smith</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">Title:&nbsp;&nbsp; Corporate Secretary</TD></TR>
</TABLE>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 3in; text-indent: 0.5in"></P>

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{"company-data": {"conformed-name": "ULTRA PETROLEUM CORP", "cik": "0001022646", "assigned-sic": "1311", "irs-number": "000000000", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-33614", "film-number": "12703501"}, "business-address": {"street1": "363 N SAM HOUSTON PARKWAY E", "street2": "SUITE 1200", "city": "HOUSTON", "state": "TX", "zip": "77060", "phone": "2818760120"}, "mail-address": {"street1": "363 N SAM HOUSTON PARKWAY 3", "street2": "SUITE 1200", "city": "HOUSTON", "state": "TX", "zip": "77060"}}
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): March 15, 2012
ULTRA PETROLEUM CORP.
(Exact name of registrant as specified
in its charter)
Yukon Territory, Canada
001-33614
N/A
(State or other jurisdiction
(Commission File Number 001-33614)
(I.R.S. Employer
of incorporation)
Identification No.)
400 N. Sam Houston Parkway East, Suite
1200
Houston, Texas 77060
(Address of principal executive offices,
including zip code)
Registrant's
telephone number, including area code
:
(281) 876-0120
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
5.02(b) 	Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers
On
March 15, 2012, Stuart E. Nance, Vice President of Marketing of Ultra Petroleum Corp. (the "
Company
")
tendered his resignation to the Company, effective March 28, 2012.
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 hereunto duly authorized.
ULTRA PETROLEUM CORP.
March 20, 2012
By:
/s/
Garrett B. Smith
Name: Garrett B. Smith
Title:   Corporate Secretary