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Table of Contents

 
 
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 10-Q
QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2011
Commission file number: 001-34635
POSTROCK ENERGY CORPORATION
(Exact name of registrant as specified in its charter)
     
Delaware   27-0981065
(State or other jurisdiction   (I.R.S. Employer
of incorporation or organization)   Identification No.)
210 Park Avenue, Oklahoma City, OK 73102
(Address of principal executive offices) (Zip Code)
(405) 600-7704
(Registrant’s telephone number, including area code)
     Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the past 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No o
     Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes o No o
     Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):
             
Large accelerated filer o   Accelerated filer o   Non-accelerated filer o   Smaller reporting company þ
        (Do not check if a smaller reporting company)    
     Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No þ
     At August 8, 2011, there were 9,431,168 outstanding shares of the registrant’s common stock having an aggregate market value of $38.7 million based on a closing price of $4.10 per share.
 
 

 


 

POSTROCK ENERGY CORPORATION
FORM 10-Q
FOR THE QUARTER ENDED JUNE 30, 2011
TABLE OF CONTENTS
         
PART I — FINANCIAL INFORMATION        
 
       
    F-1  
    F-2  
    F-3  
    F-4  
    F-5  
    1  
    9  
    10  
 
PART II — OTHER INFORMATION        
 
    11  
    11  
    11  
    11  
    11  
    12  
    14  
 EX-31.1
 EX-31.2
 EX-32.1
 EX-32.2
 EX-101 INSTANCE DOCUMENT
 EX-101 SCHEMA DOCUMENT
 EX-101 CALCULATION LINKBASE DOCUMENT
 EX-101 LABELS LINKBASE DOCUMENT
 EX-101 PRESENTATION LINKBASE DOCUMENT
 EX-101 DEFINITION LINKBASE DOCUMENT

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PART I — FINANCIAL INFORMATION
Item 1. Financial Statements
POSTROCK ENERGY CORPORATION
CONDENSED CONSOLIDATED BALANCE SHEETS
(in thousands, except share and per share data)
                 
    December 31, 2010     June 30, 2011  
            (Unaudited)  
ASSETS                
Current assets
               
Cash and equivalents
  $ 730     $ 1,305  
Accounts receivable — trade, net
    11,845       11,092  
Other receivables
    1,153       2,357  
Inventory
    6,161       5,088  
Other current assets
    2,799       7,949  
Derivative financial instruments
    31,588       29,714  
 
           
Total
    54,276       57,505  
Oil and gas properties, full cost accounting, net
    116,488       119,443  
Pipeline assets, net
    61,148       60,229  
Other property and equipment, net
    15,964       15,091  
Other noncurrent assets, net
    9,303       4,932  
Derivative financial instruments
    39,633       30,593  
 
           
Total assets
  $ 296,812     $ 287,793  
 
           
 
               
LIABILITIES AND EQUITY                
Current liabilities
               
Accounts payable
  $ 7,030     $ 6,139  
Revenue payable
    5,898       5,557  
Accrued expenses and other current liabilities
    7,190       11,257  
Litigation reserve
    1,020       10,620  
Current portion of long-term debt
    10,500       9,000  
Derivative financial instruments
    3,792       4,669  
 
           
Total
    35,430       47,242  
Derivative financial instruments
    6,681       6,050  
Long-term debt
    209,721       183,000  
Asset retirement obligations
    7,150       7,516  
Other noncurrent liabilities
          400  
 
           
Total liabilities
    258,982       244,208  
Commitments and contingencies
               
Series A Cumulative Redeemable Preferred Stock, $0.01 par value; issued and outstanding — 6,000 shares
    50,622       53,634  
Stockholders’ equity
               
Preferred stock, $0.01 par value; authorized shares — 5,000,000; 195,842 and 202,043 Series B Voting Preferred Stock issued and outstanding at December 31, 2010 and June 30, 2011, respectively
    2       2  
Common stock, $0.01 par value; authorized shares — 40,000,000; 8,238,982 and 8,429,168 issued and outstanding at December 31, 2010 and June 30, 2011, respectively
    82       84  
Additional paid-in capital
    377,538       376,609  
Accumulated deficit
    (390,414 )     (386,744 )
 
           
Total deficit
    (12,792 )     (10,049 )
 
           
Total liabilities and equity
  $ 296,812     $ 287,793  
 
           
The accompanying notes are an integral part of these statements.

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POSTROCK ENERGY CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share data)
(Unaudited)
                                         
                    (Predecessors)              
                    January 1,              
                    2010     March 6, 2010     Six Months  
    Three Months Ended June 30,     to March 5,     to     Ended June  
    2010     2011     2010     June 30, 2010     30, 2011  
Revenues
                                       
Oil and gas sales
  $ 20,120     $ 21,525     $ 18,659     $ 28,591     $ 41,762  
Gathering
    1,474       1,533       1,076       1,904       2,889  
Pipeline
    2,232       2,466       1,749       3,159       5,639  
 
                             
Total
    23,826       25,524       21,484       33,654       50,290  
Costs and expenses
                                       
Production expense
    12,005       11,406       8,645       16,123       23,840  
Pipeline expense
    1,664       1,356       1,110       2,301       3,016  
General and administrative
    7,910       5,148       5,735       9,494       10,036  
Litigation reserve
    50       100             1,620       9,600  
Depreciation, depletion and amortization
    4,905       6,836       4,164       6,008       13,727  
(Gain) loss on sale of assets
    (32 )     (2,435 )           140       (12,357 )
 
                             
Total
    26,502       22,411       19,654       35,686       47,862  
 
                             
Operating income (loss)
    (2,676 )     3,113       1,830       (2,032 )     2,428  
Other income (expense)
                                       
Gain (loss) from derivative financial instruments
    (605 )     5,568       25,246       17,968       4,747  
Gain on forgiveness of debt
          1,647                   1,647  
Other income (expense), net
    19       (164 )     (4 )     (90 )     170  
Interest expense, net
    (6,325 )     (2,633 )     (5,336 )     (8,423 )     (5,322 )
 
                             
Total other income (expense)
    (6,911 )     4,418       19,906       9,455       1,242  
 
                             
Income (loss) before income taxes
    (9,587 )     7,531       21,736       7,423       3,670  
Income taxes
                             
 
                             
Net income (loss)
    (9,587 )     7,531       21,736       7,423       3,670  
Net income attributable to non-controlling interest
                (9,958 )            
 
                             
Net income (loss) attributable to controlling interest
    (9,587 )     7,531       11,778       7,423       3,670  
Preferred dividends
          (1,915 )                 (3,774 )
Accretion of redeemable preferred stock
          (380 )                 (735 )
 
                             
Net income (loss) available to common stock
  $ (9,587 )   $ 5,236     $ 11,778     $ 7,423     $ (839 )
 
                             
Net income (loss) per common share
                                       
Basic
  $ (1.19 )   $ 0.63     $ 0.37     $ 0.92     $ (0.10 )
Diluted
  $ (1.19 )   $ 0.28     $ 0.36     $ 0.91     $ (0.10 )
Weighted average common shares outstanding
                                       
Basic
    8,049       8,311       32,137       8,047       8,283  
 
                             
Diluted
    8,049       18,792       32,614       8,116       8,283  
 
                             
The accompanying notes are an integral part of these statements.

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POSTROCK ENERGY CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
(Unaudited)
                         
    (Predecessors)              
    January 1, 2010 to     March 6, 2010 to     Six Months Ended  
    March 5, 2010     June 30, 2010     June 30, 2011  
Cash flows from operating activities
                       
Net income
  $ 21,736     $ 7,423     $ 3,670  
Adjustments to reconcile net income to cash provided by operations
                       
Depreciation, depletion and amortization
    4,164       6,008       13,727  
Stock-based compensation
    808       634       1,341  
Amortization of deferred loan costs
    2,094       1,558       848  
Change in fair value of derivative financial instruments
    (21,573 )     (7,359 )     11,160  
Litigation reserve
                9,600  
Loss (gain) on disposal of property and equipment
          140       (12,357 )
Gain on forgiveness of debt
                (1,647 )
Other non-cash changes to net income
          111       (100 )
Change in assets and liabilities
                       
Receivables
    777       4,098       (426 )
Payables
    743       1,410       (2,859 )
Other
    468       (2,317 )     (1,486 )
 
                 
Cash flows from operating activities
    9,217       11,706       21,471  
 
                 
Cash flows from investing activities
                       
Restricted cash
    (1 )     154       28  
Proceeds from sale of oil and gas properties
          101       10,682  
Equipment, development, leasehold and pipeline
    (2,282 )     (9,944 )     (15,287 )
 
                 
Cash flows from investing activities
    (2,283 )     (9,689 )     (4,577 )
 
                 
Cash flows from financing activities
                       
Proceeds from debt
    900       2,100        
Repayments of debt
    (41 )     (13,215 )     (16,319 )
 
                 
Cash flows from financing activities
    859       (11,115 )     (16,319 )
 
                 
Net increase (decrease) in cash
    7,793       (9,098 )     575  
Cash and equivalents—beginning of period
    20,884       28,677       730  
 
                 
Cash and equivalents—end of period
  $ 28,677     $ 19,579     $ 1,305  
 
                 
The accompanying notes are an integral part of these statements.

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POSTROCK ENERGY CORPORATION
CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY
(Amounts subsequent to December 31, 2010 are unaudited)
(in thousands)
                                                         
            Preferred     Common     Common     Additional             Total  
    Preferred     Stock     Shares     Stock     Paid-in     Accumulated     (Deficit)  
    Shares     Par Value     Issued     Par Value     Capital     Deficit     Equity  
Balance, December 31, 2010
    195,842     $ 2       8,238,982     $ 82     $ 377,538     $ (390,414 )   $ (12,792 )
Stock-based compensation
                      1       1,340             1,341  
Restricted stock grants, net of forfeitures
                49,000                          
Issuance of common stock
                141,186       1       743             744  
Issuance of Series B preferred stock
    6,201                                      
Issuance of warrants
                            1,497             1,497  
Preferred stock dividends
                            (3,774 )           (3,774 )
Preferred stock accretion
                            (735 )           (735 )
Net income
                                  3,670       3,670  
 
                                         
Balance, June 30, 2011
    202,043     $ 2       8,429,168     $ 84     $ 376,609     $ (386,744 )   $ (10,049 )
 
                                         

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POSTROCK ENERGY CORPORATION
Note 1 — Basis of Presentation
     PostRock Energy Corporation (“PostRock”) is an independent oil and gas company engaged in the acquisition, exploration, development, production and gathering of crude oil and natural gas. It manages its business in two segments, production and pipeline. Its production segment is focused in the Cherokee Basin, a 15-county region in southeastern Kansas and northeastern Oklahoma. It also has minor oil producing properties in Oklahoma and gas producing properties in the Appalachia Basin. The pipeline segment consists of a 1,120 mile interstate natural gas pipeline, which transports natural gas from northern Oklahoma and western Kansas to Wichita and Kansas City.
     PostRock was formed in 2009 to combine its predecessor entities, Quest Resource Corporation, Quest Energy Partners, L.P. and Quest Midstream Partners, L.P. (collectively, the “Predecessors”) into a single company. In March 2010, it completed the recombination of these entities. Unless the context requires otherwise, references to the “Company,” “we,” “us” and “our” refer to PostRock and its subsidiaries from the date of the recombination and to the Predecessors on a consolidated basis prior thereto.
     The unaudited interim condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), and reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the interim periods, on a basis consistent with the annual audited consolidated financial statements. All such adjustments are of a normal recurring nature. Certain information, accounting policies and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been omitted pursuant to such rules and regulations, although the Company believes that the disclosures are adequate to make the information presented not misleading. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the summary of significant accounting policies and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2010 (the “2010 10-K”).
     The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The operating results for the interim periods are not necessarily indicative of the results to be expected for the full year.
Recent Accounting Pronouncements and Recently Adopted Accounting Pronouncements
     In June 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-05 Comprehensive Income (Topic 220): Presentation of Comprehensive Income. ASU 2011-05 requires that all nonowner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In the two-statement approach, the first statement should present total net income and its components followed consecutively by a second statement that should present total other comprehensive income, the components of other comprehensive income, and the total of comprehensive income. The amendments are to be applied retrospectively and are effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. The Company does not expect the amendments to have a material impact on its financial statements.
     In May 2011, the FASB issued ASU 2011-04 Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs. ASU 2011-04 clarifies the principles and definitions used to measure fair value and expands disclosure requirements in order to achieve greater consistency between U.S. GAAP and International Financial Reporting Standards. The amendment does not require additional fair value measurements and is not intended to establish valuation standards or affect valuation practices outside of financial reporting. ASU 2011-04 is to be applied prospectively and is effective during interim and annual periods beginning after December 15, 2011. The Company does not expect the amendments to have a material impact on its financial statements.
     In January 2010, the FASB issued ASU 2010-06, Fair Value Measurements and Disclosures (Topic 820): Improving Disclosures about Fair Value Measurements. The update requires reporting entities to provide information about movements of assets among Levels 1 and 2 of the three-tier fair value hierarchy established under

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FASB Accounting Standards Codification (“ASC”) 820. The update also requires separate presentation (on a gross basis rather than as one net number) about purchases, sales, issuances, and settlements within the reconciliation of activity in Level 3 fair value measurements. The guidance is effective for any fiscal period beginning after December 15, 2009, except for the requirement to separately disclose purchases, sales, issuances, and settlements, which is effective for any fiscal period beginning after December 15, 2010. The Company adopted the provisions of this update relating to disclosure on movement of assets among Levels 1 and 2 beginning with the quarter ended March 31, 2010, while the provisions requiring gross presentation of activity within Level 3 assets were adopted beginning with the quarter ended March 31, 2011. The adoption did not materially affect the Company’s financial statements.
Note 2 — Divestitures
     Appalachia Basin Sale — On December 24, 2010, the Company entered into an agreement with Magnum Hunter Resources Corporation (“MHR”) to sell certain oil and gas properties and related assets in West Virginia. The sale closed in three phases for a total of $44.6 million. The first phase closed on December 30, 2010, for $28 million, the second phase closed on January 14, 2011, for $11.7 million and the third phase closed on June 16, 2011, for $4.9 million. The amount received for the first and second phases was paid half in cash and half in MHR common stock, while the amount received for the third phase was paid entirely in cash. Of the proceeds received, $4.2 million, $1.7 million and $564,000 related to the first, second and third closings, respectively, were set aside in escrow to cover indemnities and title defects. Escrowed amounts from the first and second closing are to be released in June 2012 and are reflected in the condensed consolidated balance sheet as a component of other current assets. Escrowed amounts from the third closing are to be released in December 2012 and are reflected in the condensed consolidated balance sheet as a component of other noncurrent assets.
     In general, no gains or losses are recognized upon the sale or disposition of oil and gas properties unless the deferral of gains or losses would significantly alter the relationship between capitalized costs and proved reserves of oil and gas. A significant alteration generally occurs when the deferral of gains or losses will result in an amortization rate materially different from the amortization rate calculated upon recognition of gains or losses. The Company’s evaluation demonstrated that a material difference in amortization rates would occur if no gain was recognized on the three-phased sale described above. Gains of $9.9 million and $2.5 million, net of $225,000 and $2.4 million in selling costs and adjustments, were recorded in January 2011 and June 2011 related to the second and third phases of the sale. The corresponding reduction in the Company’s oil and gas full cost pool was $1.5 million for the second closing, with no reduction for the third closing.
Note 3 — Derivative Financial Instruments
     The Company is exposed to commodity price risk and management believes it prudent to periodically reduce exposure to cash-flow variability resulting from this volatility. Accordingly, the Company enters into certain derivative financial instruments in order to manage exposure to commodity price risk inherent in its oil and gas production. Derivative financial instruments are also used to manage commodity price risk inherent in customer pricing requirements and to fix margins on the future sale of natural gas. Specifically, the Company may utilize futures, swaps and options.
     Derivative instruments expose the Company to counterparty credit risk. The Company’s commodity derivative instruments are currently with several counterparties. The Company generally executes commodity derivative instruments under master agreements which allow it, in the event of default, to elect early termination of all contracts with the defaulting counterparty. If the Company chooses to elect early termination, all asset and liability positions with the defaulting counterparty would be net cash settled at the time of election.
     The Company monitors the creditworthiness of its counterparties; however, it is not able to predict sudden changes in counterparties’ creditworthiness. In addition, even if such changes are not sudden, it may be limited in its ability to mitigate an increase in counterparty credit risk. Possible actions would be to transfer its position to another counterparty or request a voluntary termination of the derivative contracts resulting in a cash settlement. Should one of these counterparties not perform, the Company may not realize the benefit of some of its derivative instruments

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under lower commodity prices as well as incur a loss. The Company includes a measure of counterparty credit risk in its estimates of the fair values of derivative instruments in an asset position.
     The Company does not designate its derivative financial instruments as hedging instruments for financial accounting purposes; as a result, it recognizes the change in the respective instruments’ fair value currently in earnings. The table below outlines the classification of derivative financial instruments on the condensed consolidated balance sheet and their financial impact on the condensed consolidated statements of operations at and for the periods indicated (in thousands):
                         
            December 31,     June 30,  
Derivative Financial Instruments   Balance Sheet location   2010     2011  
Commodity contracts
  Current derivative financial instrument asset   $ 31,588     $ 29,714  
Commodity contracts
  Long-term derivative financial instrument asset     39,633       30,593  
Commodity contracts
  Current derivative financial instrument liability     (3,792 )     (4,669 )
Commodity contracts
  Long-term derivative financial instrument liability     (6,681 )     (6,050 )
 
                   
 
          $ 60,748     $ 49,588  
 
                   
     Gains and losses associated with derivative financial instruments related to oil and gas production were as follows for the periods indicated (in thousands):
                                         
                    (Predecessors)                  
    Three Months     Three Months     January 1,     March 6, 2010     Six Months  
    Ended June     Ended June     2010 to March     to June 30,     Ended June  
    30, 2010     30, 2011     5, 2010     2010     30, 2011  
Realized gains (losses)
  $ 7,475     $ 6,671     $ 3,673     $ 10,609     $ 15,907  
Unrealized gains (losses)
    (8,080 )     (1,103 )     21,573       7,359       (11,160 )
 
                             
Total
  $ (605 )   $ 5,568     $ 25,246     $ 17,968     $ 4,747  
 
                             
     The following table summarizes the estimated volumes, fixed prices and fair values attributable to all of the Company’s oil and gas derivative contracts at June 30, 2011.
                                 
    Remainder of     Year Ending December 31,        
    2011     2012     2013     Total  
    ($ in thousands, except per unit data)  
Natural Gas Swaps
                               
Contract volumes (Mmbtu)
    6,822,618       11,000,004       9,000,003       26,822,625  
Weighted-average fixed price per Mmbtu
  $ 6.77     $ 7.13     $ 7.28     $ 7.09  
Fair value, net
  $ 16,060     $ 25,532     $ 18,715     $ 60,307  
Natural Gas Basis Swaps
                               
Contract volumes (Mmbtu)
    4,310,136       9,000,000       9,000,003       22,310,139  
Weighted-average fixed price per Mmbtu
  $ (0.69 )   $ (0.70 )   $ (0.71 )   $ (0.70 )
Fair value, net
  $ (2,187 )   $ (4,047 )   $ (3,715 )   $ (9,949 )
Crude Oil Swaps
                               
Contract volumes (Bbl)
    24,000       42,000             66,000  
Weighted-average fixed price per Bbl
  $ 85.90     $ 87.90     $     $ 87.17  
Fair value, net
  $ (264 )   $ (506 )   $     $ (770 )
Total fair value, net
  $ 13,609     $ 20,979     $ 15,000     $ 49,588  

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     The following table summarizes the estimated volumes, fixed prices and fair values attributable to all of the Company’s oil and gas derivative contracts at December 31, 2010:
                                 
    Year Ending December 31,        
    2011     2012     2013     Total  
    ($ in thousands, except per unit data)  
Natural Gas Swaps
                               
Contract volumes (Mmbtu)
    13,550,302       11,000,004       9,000,003       33,550,309  
Weighted-average fixed price per Mmbtu
  $ 6.80     $ 7.13     $ 7.28     $ 7.04  
Fair value, net
  $ 31,588     $ 22,728     $ 16,905     $ 71,221  
Natural Gas Basis Swaps
                               
Contract volumes (Mmbtu)
    8,549,998       9,000,000       9,000,003       26,550,001  
Weighted-average fixed price per Mmbtu
  $ (0.67 )   $ (0.70 )   $ (0.71 )   $ (0.69 )
Fair value, net
  $ (3,417 )   $ (3,405 )   $ (3,031 )   $ (9,853 )
Crude Oil Swaps
                               
Contract volumes (Bbl)
    48,000       42,000             90,000  
Weighted-average fixed price per Bbl
  $ 85.90     $ 87.90     $     $ 86.83  
Fair value, net
  $ (375 )   $ (245 )   $     $ (620 )
Total fair value, net
  $ 27,796     $ 19,078     $ 13,874     $ 60,748  
Note 4 — Fair Value Measurements
     Certain assets and liabilities are measured at fair value on a recurring basis in the Company’s condensed consolidated balance sheets. The following methods and assumptions were used to estimate the fair values:
     Cash and Equivalents, Accounts Receivable and Accounts Payable The carrying amounts approximate fair value due to the short-term nature or maturity of the instruments.
     Commodity Derivative Instruments The Company’s oil and gas derivative instruments may consist of variable to fixed price swaps, collars and basis swaps. When possible, the Company estimates the fair values of these instruments based on published forward commodity price curves as of the date of the estimate. The discount rate used in the discounted cash flow projections is based on published LIBOR rates adjusted for counterparty credit risk. Counterparty credit risk is incorporated into derivative assets while the Company’s own credit risk is incorporated into derivative liabilities. Both are based on the current published credit default swap rates. See Note 3 — Derivative Instruments and Hedging Activities.
     Short-Term Investments Short term investments are included in other current assets in the condensed consolidated balance sheet. At June 30, 2011, these investments consisted of 23,517 shares of MHR common stock received as proceeds from the Appalachia Basin sale. The 23,517 shares were sold in July 2011 for approximately $168,000. The Company previously sold 218,095 shares of MHR common stock in June 2011 for $1.5 million and received the proceeds in July 2011.

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     Measurement information for assets and liabilities that are measured at fair value on a recurring basis was as follows:
                                 
                            Total Net Fair  
    Level 1     Level 2     Level 3     Value  
At December 31, 2010
                               
Short term investments — other current assets
  $     $ 1,354     $     $ 1,354  
Derivative financial instruments — assets
          71,221             71,221  
Derivative financial instruments — liabilities
          (620 )     (9,853 )     (10,473 )
 
                       
Total
  $     $ 71,955     $ (9,853 )   $ 62,102  
 
                       
 
                               
At June 30, 2011
                               
Short term investments — other current assets (1)
  $ 159     $     $     $ 159  
Derivative financial instruments — assets
          60,307             60,307  
Derivative financial instruments — liabilities
          (10,719 )           (10,719 )
 
                       
Total
  $ 159     $ 49,588     $     $ 49,747  
 
                       
 
(1)   In June 2011, the Company transferred 23,517 shares of MHR common stock with a fair value of $159,000 from Level 2 to Level 1 due to the limited amount of time remaining until restrictions on the Company’s ability to trade these securities lapsed in July 2011. The lifting of restrictions enabled the Company to value these securities at published market prices.
Level 1 — Quoted prices available in active markets for identical assets or liabilities at the reporting date.
Level 2 — Pricing inputs other than quoted prices in active markets included in Level 1 which are either directly or indirectly observable at the reporting date. Level 2 consists primarily of non-exchange traded commodity derivatives.
Level 3 — Pricing inputs include significant inputs that are generally less observable from objective sources.
     The Company classifies assets and liabilities within the fair value hierarchy based on the lowest level of input that is significant to the fair value measurement of each individual asset and liability taken as a whole.
     Other than the activity related to shares of MHR common stock discussed above, there were no movements between Levels 1 and 2 during the periods from January 1 to March 5 and March 6 to June 30, 2010, and for the six months ended June 30, 2011.
     The following table sets forth a reconciliation of changes in the fair value of risk management assets and liabilities classified as Level 3 in the fair value hierarchy for the periods presented (in thousands). There were no purchases, sales or issuances during the time period presented.
                         
    Predecessors              
    January 1, 2010 to     March 6, 2010 to     Six Months Ended  
    March 5, 2010     June 30, 2010     June 30, 2011  
Balance at beginning of period
  $ 1,530     $ 5,455     $ (9,853 )
Realized and unrealized gains included in earnings
    7,254       13,713       (2,025 )
Transfers out of Level 3 (1)
                9,949  
Settlements
    (3,329 )     (8,206 )     1,929  
 
                 
Balance at end of period
  $ 5,455     $ 10,962     $  
 
                 
 
(1)   Availability of market based information allowed the Company to reclassify all if its swap contracts tied to Southern Star prices from Level 3 to Level 2 during the second quarter of 2011.
     Additional Fair Value Disclosures — The Company has 6,000 outstanding shares of Series A Cumulative Redeemable Preferred Stock (see Note 7 — Redeemable Preferred Stock and Warrants). The fair value and the carrying value of these securities were $68.5 million and $50.6 million, respectively, at December 31, 2010, and $62.7 million and $53.6 million, respectively, at June 30, 2011. The fair value was determined by discounting the cash flows over the remaining life of the securities utilizing a LIBOR interest rate and a risk premium of approximately 6.9% and 10.3% at December 31, 2010, and June 30, 2011, respectively, which was based on companies with similar leverage ratios to PostRock.

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     The Company’s long-term debt consists entirely of floating-rate facilities. The carrying amount of floating-rate debt approximates fair value because the interest rates paid on such debt are generally set for periods of six months or shorter.
Note 5 — Asset Retirement Obligations
     The following table reflects the changes to the Company’s asset retirement obligations for the period indicated (in thousands):
                         
    Predecessors              
    January 1, 2010 to     March 6, 2010 to     Six Months Ended  
    March 5, 2010     June 30, 2010     June 30, 2011  
Asset retirement obligations at beginning of period
  $ 6,552     $ 6,648     $ 7,150  
Liabilities incurred
          3       44  
Liabilities settled
    (1 )     (10 )      
Accretion
    97       193       322  
Divestitures
                 
 
                 
Asset retirement obligations at end of period
  $ 6,648     $ 6,834     $ 7,516  
 
                 
Note 6 — Long-Term Debt
     The following is a summary of PostRock’s long-term debt at the dates indicated (in thousands):
                 
    December 31,     June 30,  
    2010     2011  
Borrowing Base Facility
  $ 187,000     $ 183,000  
Secured Pipeline Loan
    13,500       9,000  
QER Loan
    19,721        
 
           
Total debt
    220,221       192,000  
Less current maturities included in current liabilities
    10,500       9,000  
 
           
Total long-term debt
  $ 209,721     $ 183,000  
 
           
     The terms of the Company’s credit facilities are described within Note 10 of Item 8. Financial Statement and Supplementary Data in the 2010 10-K.
     As discussed in Note 2, the Company sold certain Appalachia Basin oil and gas properties to MHR in three phases that closed in December 2010, January 2011 and June 2011. The $44.6 million aggregate purchase price for the three phases was received in cash and in shares of MHR stock. Included in the $44.6 million total was approximately $41.6 million representing the purchase price of assets owned by one of the Company’s subsidiaries, Quest Eastern Resource LLC (“QER”), pledged as collateral under the QER Loan. From the sale proceeds, QER made payments to the lender, Royal Bank of Canada (“RBC”), in the amount of $21.2 million in December 2010, $9.3 million in January 2011 and $4.3 million in June 2011. The $9.3 million payment in January 2011 consisted of $5.7 million in MHR common stock and $3.6 million in cash while the $4.3 million payment in June 2011 was entirely in cash. Concurrent with the June 2011 payment and pursuant to the terms of an asset sale agreement with RBC, the Company fully settled the outstanding balance of the QER Loan of approximately $843,000 by issuing 141,186 shares of its common stock with a fair value of $744,000 to RBC. The Company expects to recover the full amount of the $843,000 payment to RBC through the release of escrowed proceeds from the Appalachia Basin asset sale in June 2012.
     The settlement of the QER Loan was facilitated by the restructuring of a prior loan (the “PESC Loan”) that met the criteria under accounting guidance to be classified as a troubled debt restructuring. The Company had previously recorded a gain on troubled debt restructuring related to the QER Loan of $2.9 million in 2010. Following a re-evaluation of the maximum sum of future cash flows that would be paid to RBC, the Company recorded an additional gain of $1.6 million during the second quarter of 2011. The gain includes $799,000 of accrued interest

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that was forgiven at the time the balance of the loan was settled. The gain is reflected as a “gain on forgiveness of debt” in the condensed consolidated statement of operations.
     Of the $6.4 million in escrowed funds related to the asset sale, $5.9 million is recorded in other current assets and $564,000 is recorded in other noncurrent assets. If all the escrowed funds are released to the Company and after the payment to the Company of approximately $843,000 to cover the issuance of stock to RBC described above, $4.6 million will be paid to RBC and $400,000 will be paid to a third party, with the remaining $614,000 paid to the Company. Because the amount payable to RBC is scheduled to be released from escrow in 12 months, the Company has presented the liability in accrued expenses and other current liabilities on the condensed consolidated balance sheet.
     In addition to the payments described above, the Company made periodic payments of $4.5 million on the Secured Pipeline Loan and net payments of $4.0 million on the Borrowing Base Facility during the six month period ended June 30, 2011. The Company was in compliance with all its financial covenants at June 30, 2011.
Note 7 — Redeemable Preferred Stock and Warrants
     The Company may accrue dividends on its Series A Preferred Stock rather than paying cash prior to July 1, 2013. Whenever dividends are accrued, the liquidation preference on the Series A Preferred Stock is increased by a similar amount, additional warrants to purchase shares of PostRock common stock are issued and additional shares of Series B Preferred Stock are issued as well. The Company records the increase in liquidation preference and the issuance of additional warrants by allocating their relative fair values to the amount of accrued dividends. The allocation results in an increase to the Company’s temporary equity related to the Series A Preferred Stock and an increase to additional paid in capital related to the additional warrants issued. The increase to additional paid in capital related to additional warrants issued was $745,000 and $752,000 in the first and second quarters of 2011, respectively.
     The following tables describe the changes in temporary equity, currently comprised of the Series A Preferred Stock (in thousands except share amounts), and in outstanding warrants:
                                         
            Number of                    
    Carrying Value of     Outstanding     Liquidation Value of     Number of     Weighted Average  
    Series A Preferred     Series A     Series A Preferred     Outstanding     Exercise Price of  
    Stock     Preferred Shares     Stock     Warrants     Warrants  
Balance on December 31, 2010
  $ 50,622       6,000     $ 61,980       19,584,205     $ 3.16  
Accrued dividends
    1,114             1,859       290,986       6.39  
Accretion
    355                            
 
                             
Balance on March 31, 2011
    52,091       6,000       63,839       19,875,191       3.21  
Accrued dividends
    1,163             1,915       329,068       5.82  
Accretion
    380                            
 
                             
Balance on June 30, 2011
  $ 53,634       6,000     $ 65,754       20,204,259     $ 3.25  
 
                             
Note 8 — Equity and Earnings per Share
     Share-Based Payments — The Company recorded share based compensation expense of $551,000 and $1.0 million for the three months ended June 30, 2010 and 2011, respectively. Expense for the periods from January 1 to March 5 and March 6 to June 30, 2010, was $808,000 and $634,000, respectively, and $1.3 million for the six months ended June 30, 2011. Total share-based compensation to be recognized on unvested stock awards and options at June 30, 2011, is $1.6 million over a weighted average period of 1.37 years. The following table summarizes option awards granted during 2011 and their associated valuation assumptions:

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    Number of     Fair value per                    
    options granted     option     Exercise price     Risk free rate     Volatility  
First quarter 2011 employee awards (1)
    18,900     $ 3.79     $ 6.15       2.00 %     74.7 %
First quarter 2011 director awards (2)
    10,000     $ 3.02     $ 4.80       1.93 %     77.0 %
Second quarter 2011 employee awards (1)
    5,500     $ 4.51     $ 7.30       1.84 %     75.2 %
Second quarter 2011 director awards (2)
    160,000     $ 4.53     $ 7.31       1.91 %     75.2 %
 
(1)   Awards vest ratably over a three year period.
 
(2)   Awards vest immediately.
     The following table summarizes restricted share awards granted during 2011:
                 
    Number of        
    shares granted     Fair Value Per Share  
First quarter 2011 restricted share awards (1)
    51,500     $ 6.15  
 
(1)   Awards vest in one year.
     Income/(Loss) per Share — A reconciliation of the numerator and denominator used in the basic and diluted per share calculations for the periods indicated is as follows (dollars in thousands, except per share amounts):
                                         
                    (Predecessor)          
                    January 1, 2010     March 6, 2010     Six Months Ended  
    Three Months Ended June 30,     to March 5,     to June 30,     June 30,  
    2010     2011     2010     2010     2011  
Net income (loss) attributable to controlling interests
  $ (9,587 )   $ 7,531     $ 11,778     $ 7,423     $ 3,670  
Preferred stock accretion
          (380 )                 (735 )
Preferred stock dividends
          (1,915 )                 (3,774 )
 
                             
Net income (loss) attributable to common stockholders
  $ (9,587 )   $ 5,236     $ 11,778     $ 7,423     $ (839 )
 
                             
 
                                       
Denominator
                                       
Common shares
    8,048,998       8,310,527       32,016,327       8,046,771       8,283,488  
Weighted average number of unvested share-based awards participating
                121,121              
 
                             
Denominator for basic earnings per share
    8,048,998       8,310,527       32,137,448       8,046,771       8,283,488  
 
                             
Effect of potentially dilutive securities
                                       
Unvested share-based awards non-participating
          126,039       450,751       68,465        
Warrants
            10,159,326                          
Stock options
          195,957       26,154       316        
 
                             
Denominator for diluted earnings per share
    8,048,998       18,791,849       32,614,353       8,115,552       8,283,488  
 
                             
 
                                       
Basic earnings per share
  $ (1.19 )   $ 0.63     $ 0.37     $ 0.92     $ (0.10 )
 
                             
Diluted earnings per share
  $ (1.19 )   $ 0.28     $ 0.36     $ 0.91     $ (0.10 )
 
                             
 
                                       
Securities excluded from earnings per share calculation:
                                       
Unvested share-based awards
                            308,175  
Antidilutive stock options
    19,550       201,250       570,000       19,550       697,750  
Warrants
                            20,204,259  
Note 9 — Commitments and Contingencies
     Litigation — The Company is subject, from time to time, to certain legal proceedings and claims in the ordinary course of conducting its business. It records a liability related to its legal proceedings and claims when it has determined that it is probable that it will be obligated to pay and the related amount can be reasonably estimated. Except for those legal proceedings listed below, it believes there are no pending legal proceedings in which it is currently involved that, if adversely determined, would have a material adverse effect on its financial position, results of operations or cash flows.
     As further described in Note 14 of Part II, Item 8 in the 2010 10-K, the Company had been sued in royalty owner lawsuits filed in Oklahoma and Kansas.

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     In Oklahoma, suits by a group of individual royalty owners and by a putative class representing all remaining royalty owners were filed in the District Court of Nowata County, Oklahoma. The lawsuits alleged that the Company wrongfully deducted post-production costs from the plaintiffs’ royalties and engaged in self-dealing contracts and agreements resulting in a less than market price for the gas production. The Company denied the allegations. Settlements have been reached in each of the cases, and on July 28, 2011, the Court entered an order approving the class action settlement. The Company used cash on hand to fund the $5.6 million in settlements on July 29, 2011.
     The Kansas action is a putative class action filed in the United States District Court for the District of Kansas, brought on behalf of all the Company’s royalty owners in that state. Plaintiffs allege that the Company failed to properly make royalty payments by, among other things, charging post-production costs to royalty owners in violation of the underlying lease contracts, paying royalties based on sale point volumes rather than wellhead volumes, allocating expenses in excess of the actual and reasonable post-production costs incurred, allocating production costs and marketing costs to royalty owners, and making royalty payments after the statutorily prescribed time for doing so without paying interest thereon. The Company has filed an answer, denying plaintiffs’ claims. No class certification hearing has yet been scheduled. The parties have participated in multiple mediation sessions. Another mediation session is scheduled in mid-August. If the matter cannot be resolved through mediation, the case will proceed with general discovery, a class certification hearing, and, if certified, a trial on the merits.
     At June 30, 2011, the Company had reserved $10.6 million for the estimated cost to resolve these cases. The reserve included $9.5 million and $100,000 added in the first and second quarter of 2011, respectively. After funding the settlement for the Oklahoma lawsuits, the reserve remaining for the estimated cost to resolve the Kansas lawsuit is $5.0 million. There can be no assurance the amount reserved will be sufficient to cover any final settlement or damage awards.
     Contractual Commitments — The Company has numerous contractual commitments in the ordinary course of business, debt service requirements and operating lease commitments. During the first quarter of 2011, the Company entered into new operating leases for compressors utilized in its gathering system. The leases convert already utilized compressors from month-to-month to a specified term lease. As a result, the $900,000 minimum amount of these contracts would be an increase to the amount included in the Company’s outstanding commitments table at December 31, 2010.
     Other than the compressor leases and debt repayments during the six months ended June 30, 2011, there were no material changes to the Company’s commitments since December 31, 2010.

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Note 10 — Operating Segments
     Operating segment data for the periods indicated is as follows (in thousands):
                         
    Production     Pipeline     Total  
Three months ended June 30, 2010
                       
Revenues
  $ 21,594     $ 2,232     $ 23,826  
Operating profit
  $ 5,583     $ (299 )   $ 5,284  
 
                       
Three months ended June 30, 2011
                       
Revenues
  $ 23,058     $ 2,466     $ 25,524  
Operating profit
  $ 8,129     $ 232     $ 8,361  
 
                       
January 1, 2010 to March 5, 2010 (Predecessor)
                       
Revenues
  $ 19,735     $ 1,749     $ 21,484  
Operating profit
  $ 7,516     $ 49     $ 7,565  
 
                       
March 6, 2010 to June 30, 2010
                       
Revenues
  $ 30,495     $ 3,159     $ 33,654  
Operating profit
  $ 9,351     $ (269 )   $ 9,082  
 
                       
Six months ended June 30, 2011
                       
Revenues
  $ 44,651     $ 5,639     $ 50,290  
Operating profit
  $ 21,259     $ 805     $ 22,064  
 
                       
Identifiable assets
                       
December 31, 2010
  $ 232,111     $ 64,701     $ 296,812  
June 30, 2011
  $ 224,592     $ 63,201     $ 287,793  
     The following table reconciles segment operating profits reported above to income before income taxes and non-controlling interests (in thousands):
                                         
                    (Predecessor)              
                    January 1,     March 6, 2010     Six Months  
    Three Months Ended June 30,     2010 to     to June 30,     Ended June 30,  
    2010     2011     March 5, 2010     2010     2011  
Segment operating profit (1)
  $ 5,284     $ 8,361     $ 7,565     $ 9,082     $ 22,064  
General and administrative expenses
    (7,910 )     (5,148 )     (5,735 )     (9,494 )     (10,036 )
Litigation reserve
    (50 )     (100 )           (1,620 )     (9,600 )
Gain from forgiveness of debt
          1,647                   1,647  
Gain (loss) from derivative financial instruments
    (605 )     5,568       25,246       17,968       4,747  
Interest expense, net
    (6,325 )     (2,633 )     (5,336 )     (8,423 )     (5,322 )
Other income (expense), net
    19       (164 )     (4 )     (90 )     170  
 
                             
Income (loss) before income taxes
  $ (9,587 )   $ 7,531     $ 21,736     $ 7,423     $ 3,670  
 
                             
 
(1)   Segment operating profit represents total revenues less costs and expenses directly attributable thereto.
Note 11 — Subsequent Events
     As discussed in Note 9 — Commitments and Contingencies, on July 28, 2011, the Company finalized the settlements related to its Oklahoma royalty owner lawsuits and the following day the Company used cash on hand to fund the $5.6 million in settlements.
     Effective July 31, 2011, the Company’s borrowing base credit facility was redetermined based on its oil and gas reserves at March 31, 2011. The borrowing base was reduced from $225 million to $200 million.
     On August 8, 2011, the Company purchased a majority of Constellation Energy Group, Inc.’s (“CEG”) interests in Constellation Energy Partners LLC (“CEP”). In the transaction, the Company acquired all 485,065 Class A Member Interests and 3,128,670 Class B Member Interests. In combination, the acquired units represent a 14.9% interest in CEP. CEG’s consideration was comprised of $6.6 million of cash, 1,000,000 shares of PostRock common stock and warrants to acquire an additional 673,822 shares of PostRock. Of the warrants, 224,607 are exercisable for one year at an exercise price of $6.57 a share, 224,607 are exercisable for two years at $7.07 a share and 224,608 for three years at $7.57 a share.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Overview
     PostRock Energy Corporation (“PostRock”) is an independent oil and gas company engaged in the acquisition, exploration, development, production and gathering of crude oil and natural gas. We manage our business in two segments, production and pipeline. Our production segment is focused in the Cherokee Basin, a 15-county region in southeastern Kansas and northeastern Oklahoma. We also have minor oil producing properties in Oklahoma and gas producing properties in the Appalachia Basin. Our pipeline segment consists of a 1,120 mile interstate natural gas pipeline, which transports natural gas from northern Oklahoma and western Kansas to Wichita and Kansas City.
     The following discussion should be read together with the unaudited consolidated financial statements and related notes included elsewhere herein and with our annual report on Form 10-K for the year ended December 31, 2010.
     Our highlights during the first half of 2011 include:
    Closed on the second and third phases of our Appalachia Basin sale for $11.7 million and $4.9 million, respectively.
    Decreased debt by $28.2 million from December 31, 2010, including the full settlement of our QER Loan.
    Settled all of our Oklahoma royalty interest owner lawsuits for $5.6 million which was funded in July 2011.
    Brought 55 new oil and gas wells online in the Cherokee Basin, of which 10 were drilled prior to 2011, recompleted 54 wells and returned 49 wells in the basin to production.
2011 Drilling Program Update
     We have budgeted $43.6 million for our 2011 drilling program. During the first half of 2011, we drilled and connected 45 development wells, completed 10 new wells drilled in prior periods, recompleted or connected 54 wells and returned 49 wells to production in the Cherokee Basin. Though individual well results varied by area, production from the wells brought on-line during the first half of 2011 is meeting cumulative production expectations. We have spent $13.7 million for drilling and completion through June 30, 2011, compared to $22.0 million budgeted. We continue to evaluate our drilling program in an effort to ensure all projects provide an attractive rate of return, but do not expect to spend our full budgeted drilling program amount during 2011.
Constellation Energy Partners, LLC
     On August 8, 2011, we purchased a majority of Constellation Energy Group, Inc.’s (“CEG”) interests in Constellation Energy Partners LLC (“CEP”). In the transaction, we acquired 485,065 Class A Member Interests and 3,128,670 Class B Member Interests. In combination, the acquired units represent a 14.9% interest in CEP. The consideration paid to CEG was comprised of $6.6 million of cash, 1,000,000 shares of PostRock common stock and warrants to acquire an additional 673,822 shares of PostRock. Of the warrants, 224,607 are exercisable for one year at an exercise price of $6.57 a share, 224,607 are exercisable for two years at $7.07 a share and 224,608 for three years at $7.57 a share. The cash was funded with borrowings under our credit facility. Both PostRock and CEP each have the majority of their assets in the Cherokee Basin of Kansas and Oklahoma. The acquisition provides an opportunity for us to pursue increased efficiency in the Cherokee Basin through cooperation with CEP and others.

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Results of Operations
     In March 2010, PostRock completed the recombination of its three predecessor entities. The results of operations for the six months ended June 30, 2010, represent the combined results of these predecessor entities and PostRock. The results of operations for all other periods presented are those of PostRock. Unless the context requires otherwise, references to the “Company,” “we,” “us” and “our” refer to PostRock and its subsidiaries from the date of the recombination and to the three predecessor entities on a consolidated basis prior thereto. Operating segment data for the periods indicated are as follows (in thousands):
                                 
    Three Months Ended     Six Months Ended  
    June 30,     June 30,  
    2010     2011     2010     2011  
Revenues
                               
Oil and gas sales
  $ 20,120     $ 21,525     $ 47,250     $ 41,762  
Gathering
    1,474       1,533       2,980       2,889  
 
                       
Total production segment
    21,594       23,058       50,230       44,651  
Pipeline segment
    2,232       2,466       4,908       5,639  
 
                       
Total
  $ 23,826     $ 25,524     $ 55,138     $ 50,290  
 
                       
Operating profit
                               
Production
  $ 5,583     $ 8,129     $ 16,867     $ 21,259  
Pipelines
    (299 )     232       (220 )     805  
 
                       
Total segment operating profit
    5,284       8,361       16,647       22,064  
General and administrative expenses
    (7,910 )     (5,148 )     (15,229 )     (10,036 )
Litigation reserve
    (50 )     (100 )     (1,620 )     (9,600 )
 
                       
Total operating profit
  $ (2,676 )   $ 3,113     $ (202 )   $ 2,428  
 
                       
Three Months Ended June 30, 2010 Compared to the Three Months Ended June 30, 2011
     The following table presents financial and operating data for the periods indicated as follows:
                                 
    Three Months Ended        
    June 30,     Increase/  
    2010     2011     (Decrease)  
    ($ in thousands except per unit data)  
Production Segment
                               
Oil and gas sales
  $ 20,120     $ 21,525     $ 1,405       7.0 %
Gathering revenue
  $ 1,474     $ 1,533     $ 59       4.0 %
Production expense
  $ 12,005     $ 11,406     $ (599 )     (5.0 )%
Depreciation, depletion and amortization
  $ 4,038     $ 5,955     $ 1,917       47.5 %
Gain (loss) on sale of assets
  $ 32     $ 2,432     $ 2,400       * %
Production Data
                               
Total production (Mmcfe)
    4,910       4,742       (168 )     (3.4 )%
Average daily production (Mmcfe/d)
    54.0       52.1       (1.90 )     (3.5 )%
Average Sales Price per Unit (Mcfe)
                               
Natural Gas (Mcf)
  $ 3.92     $ 4.23     $ 0.31       7.9 %
Oil(Bbl)
  $ 74.73     $ 99.96     $ 25.23       33.8 %
Natural Gas Equivalent (Mcfe)
  $ 4.10     $ 4.54     $ 0.44       10.7 %
Average Unit Costs per Mcfe
                               
Production expense
  $ 2.45     $ 2.41     $ (0.04 )     (1.6 )%
Depreciation, depletion and amortization
  $ 0.82     $ 1.26     $ 0.44       53.7 %
Pipeline Segment
                               
Pipeline revenue
  $ 2,232     $ 2,466     $ 234       10.5 %
Pipeline expense
  $ 1,664     $ 1,356     $ (308 )     (18.5 )%
Depreciation and amortization expense
  $ 867     $ 881     $ 14       1.6 %
Gain (loss) on sale of assets
  $     $ 3     $ 3       * %
 
*   Not meaningful

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     Oil and gas sales increased $1.4 million, or 7.0%, from $20.1 million during the three months ended June 30, 2010, to $21.5 million during the three months ended June 30, 2011. Increased realized natural gas equivalent prices resulted in a $2.1 million increase in revenue while lower production volumes resulted in a $684,000 decrease in revenue. Production decreased due to the divestiture of the Appalachia Basin assets and reduced production volumes in the Cherokee Basin. The Cherokee Basin reduction is primarily due to lower than planned capital expenditures in the first half of 2011 coupled with natural production declines. Our average realized natural gas equivalent prices increased from $4.10 per Mcfe for the three months ended June 30, 2010, to $4.54 per Mcfe for the three months ended June 30, 2011.
     Gathering revenue increased $59,000, or 4.0%, from $1.47 million for the three months ended June 30, 2010, to $1.53 million for the three months ended June 30, 2011.
     Pipeline revenue increased $234,000, or 10.5%, from $2.2 million for the three months ended June 30, 2010, to $2.5 million for the three months ended June 30, 2011. The increase was primarily due to the renegotiation of a firm transportation contract in 2010 that resulted in increased firm transportation revenue as well as increased commodity fees.
     Production expense consists of lease operating expenses, severance and ad valorem taxes (collectively, “production taxes”) and gathering expense. Production expense decreased $599,000, or 5.0%, from $12.0 million for the three months ended June 30, 2010, to $11.4 million for the three months ended June 30, 2011. The decrease was primarily due to lower production taxes of $698,000 offset by slightly higher lease operating expenses of $99,000. Production expense was $2.45 per Mcfe for the three months ended June 30, 2010, as compared to $2.41 per Mcfe for the three months ended June 30, 2011.
     Pipeline expense decreased $308,000, or 18.5%, from $1.7 million during the three months ended June 30, 2010, to $1.4 million during the three months ended June 30, 2011. The decrease was primarily due to a significant reduction in costs related to our capacity lease that expires at the end of October 2011.
     Depreciation, depletion and amortization increased $1.9 million, or 39.4%, from $4.9 million during the three months ended June 30, 2010, to $6.8 million during the three months ended June 30, 2011. Depletion and amortization on our production properties increased approximately $1.9 million, or 47.5%, from $4.0 million during the three months ended June 30, 2010, to $5.9 million during the three months ended June 30, 2011. On a per unit basis, we had an increase of $0.44 per Mcfe from $0.82 per Mcfe during the three months ended June 30, 2010, to $1.26 per Mcfe during the three months ended June 30, 2011. The increase in depletion and amortization rate was the result of a change from the straight-line method of depreciation to the units-of production method upon reclassifying our gathering system to our production full cost pool in the fourth quarter of 2010. The gathering system was previously a component of our pipeline segment and depreciated under the straight line method. Depreciation and amortization expense on our pipeline segment increased $14,000, or 1.6%, from $867,000 during the three months ended June 30, 2010, to $881,000 during the three months ended June 30, 2011.
     Gain from the sale of assets of $2.4 million during the three months ended June 30, 2011, was primarily due to the third and final phase of the Appalachia Basin sale in June 2011. Gross proceeds from this phase were $4.9 million.
     Litigation reserve expense was $50,000 for the three months ended June 30, 2010, and $100,000 for the three months ended June 30, 2011. The 2010 expense represents an increase in the reserve for our shareholder related lawsuits that settled in early 2011. The 2011 expense represents an increase in the reserve for the Oklahoma royalty lawsuits from $5.5 million to $5.6 million, the amount of the settlement.
     General and administrative expenses decreased $2.8 million, or 34.9%, from $7.9 million during the three months ended June 30, 2010, to $5.1 million during the three months ended June 30, 2011. In the prior year period, we incurred significant fees related to a cancelled refinancing. As a result, legal fees decreased $2.2 million and outside services decreased $1.2 million. These decreases were partially offset by non-employee director stock compensation of approximately $725,000 in the current year period. Annual board stock compensation for 2011 occurred in the second quarter of 2011 while the annual expense for 2010 occurred in the fourth quarter of that year.

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     Other income was $6.9 million during the three months ended June 30, 2010, and other expense was $4.4 million during the three months ended June 30, 2011. Loss from derivative financial instruments was $605,000 during the three months ended June 30, 2010, and gain from derivative financial instruments was $5.5 million during the three months ended June 30, 2011. We recorded a $8.1 million unrealized loss and $7.5 million realized gain on our derivative contracts for the three months ended June 30, 2010, compared to a $1.1 million unrealized loss and $6.7 million realized gain for the three months ended June 30, 2011. Interest expense, net, was $6.3 million during the three months ended June 30, 2010, and $2.6 million during the three months ended June 30, 2011. The decrease is primarily due to the September 2010 refinancing which resulted in a lower balance of debt, lower interest rates and decreased amortization of debt issuance costs. Gain from forgiveness of debt was $1.6 million during the three months ended June 30, 2011. The gain was a result of the settlement of our QER Loan under a troubled debt restructuring as discussed in Liquidity and Capital Resources — QER Loan below.
Six Months Ended June 30, 2010 Compared to the Six Months Ended June 30, 2011
     The following table presents financial and operating data for the periods indicated as follows:
                                 
    Six Months Ended        
    June 30,     Increase/  
    2010     2011     (Decrease)  
    ($ in thousands except per unit data)  
Production Segment
                               
Oil and gas sales
  $ 47,250     $ 41,762     $ (5,488 )     (11.6 )%
Gathering revenue
  $ 2,980     $ 2,889     $ (91 )     (3.1 )%
Production expense
  $ 24,768     $ 23,840     $ (928 )     (3.7 )%
Depreciation, depletion and amortization
  $ 8,455     $ 11,906     $ 3,451       40.8 %
Gain (loss) on sale of assets
  $ (140 )   $ 12,354     $ 12,494       * %
Production Data
                               
Total production (Mmcfe)
    9,740       9,415       (325 )     (3.3 )%
Average daily production (Mmcfe/d)
    53.8       52.0       (1.8 )     (3.3 )%
Average Sales Price per Unit (Mcfe)
                               
Natural Gas (Mcf)
  $ 4.68     $ 4.15     $ (0.53 )     (11.3 )%
Oil(Bbl)
  $ 74.80     $ 94.45     $ 19.65       26.3 %
Natural Gas Equivalent (Mcfe)
  $ 4.85     $ 4.44     $ (0.41 )     (8.5 )%
Average Unit Costs per Mcfe
                               
Production expense
  $ 2.54     $ 2.53     $ (0.01 )     (0.4 )%
Depreciation, depletion and amortization
  $ 0.87     $ 1.26     $ 0.39       44.8 %
Pipeline Segment
                               
Pipeline revenue
  $ 4,908     $ 5,639     $ 731       14.9 %
Pipeline expense
  $ 3,411     $ 3,016     $ (395 )     (11.6 )%
Depreciation and amortization expense
  $ 1,717     $ 1,821     $ 104       6.1 %
 
*   Not meaningful
     Oil and gas sales decreased $5.5 million, or 11.6%, from $47.3 million during the six months ended June 30, 2010, to $41.8 million during the six months ended June 30, 2011. Decreased realized natural gas equivalent prices resulted in a $3.9 million reduction in revenues, and lower production volumes reduced revenue by $1.6 million. Production decreased due to the divestiture of the Appalachia Basin assets and reduced production volumes in the Cherokee Basin. The Cherokee Basin reduction is primarily due to lower than planned capital expenditures in the first half of 2011 coupled with natural production declines. Our average realized natural gas equivalent prices decreased from $4.85 per Mcfe for the six months ended June 30, 2010, to $4.44 per Mcfe for the six months ended June 30, 2011.
     Gathering revenue decreased $91,000, or 3.1%, from $3.0 million for the six months ended June 30, 2010, to $2.9 million for the six months ended June 30, 2011.

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     Pipeline revenue increased $731,000, or 14.9%, from $4.9 million for the six months ended June 30, 2010, to $5.6 million for the six months ended June 30, 2011. The renegotiation of a firm transportation contract in mid 2010 resulted in increased firm transportation revenue as well as increased commodity fees. In addition, we received more seasonal firm transportation revenue in the current year and increased throughput resulted in higher commodity fee revenue.
     Production expense decreased $928,000, or 3.7%, from $24.7 million for the six months ended June 30, 2010, to $23.8 million for the six months ended June 30, 2011. The decrease was due to lower production taxes of $1.6 million partially offset by an increase in lease operating expenses of $747,000. The increase is primarily related to one-time costs associated with well workovers in our oil producing assets in Oklahoma. Production expense was $2.54 per Mcfe for the six months ended June 30, 2010, as compared to $2.53 per Mcfe for the six months ended June 30, 2011.
     Pipeline expense decreased $395,000, or 11.6%, from $3.4 million during the six months ended June 30, 2010, to $3.0 million during the six months ended June 30, 2011. We had a significant reduction in costs related to our capacity lease that expires at the end of October 2011; however, these savings were offset by the costs associated with gas lost in the first quarter due to an external corrosion leak.
     Depreciation, depletion and amortization increased $3.5 million, or 34.9%, from $10.2 million during the six months ended June 30, 2010, to $13.7 million during the six months ended June 30, 2011. Depletion and amortization on our production properties increased approximately $3.4 million, or 40.8%, from $8.5 million during the six months ended June 30, 2010, to $11.9 million during the six months ended June 30, 2011. On a per unit basis, we had an increase of $0.39 per Mcfe from $0.87 per Mcfe during the six months ended June 30, 2010, to $1.26 per Mcfe during the six months ended June 30, 2011. The increase in depletion and amortization rate was the result of a change from the straight-line method of depreciation to the units-of production method upon reclassifying our gathering system to our production full cost pool in the fourth quarter of 2010. The gathering system was previously a component of our pipeline segment and depreciated under the straight line method. Depreciation and amortization expense on our pipeline segment increased $104,000, or 6.1%, from $1.7 million during the six months ended June 30, 2010, to $1.8 million during the six months ended June 30, 2011.
     Gain from the sale of assets of $12.4 million during the six months ended June 30, 2011, was primarily due to the second and third phases of the Appalachia Basin sale in 2011. Gross proceeds from both phases were $16.6 million.
     General and administrative expenses decreased $5.2 million, or 34.1%, from $15.2 million during the six months ended June 30, 2010, to $10.0 million during the six months ended June 30, 2011. Accounting, tax and audit fees decreased $1.4 million, outside service fees decreased $1.5 million, and legal fees decreased $3.1 million. The March 2010 recombination and the September 2010 refinancing have enabled us to eliminate significant costs associated with those transactions. These decreases were partially offset by non-employee director stock compensation of approximately $725,000 in the current year period. Annual board stock compensation for 2011 occurred in the second quarter of 2011 while the annual expense for 2010 occurred in the fourth quarter of that year.
     Litigation reserve expense increased $8.0 million, from $1.6 million during the six months ended June 30, 2010, to $9.6 million during the six months ended June 30, 2011. The $1.6 million expense for the six months ended June 30, 2010, was primarily related to various shareholder related lawsuits that settled in early 2011. The $9.6 million expense for the six months ended June 30, 2011, was for an increase to the estimated potential cost to resolve royalty owner lawsuits pending in Oklahoma and Kansas. These represent the last known significant contingent liabilities remaining from our predecessor entities. All of our Oklahoma royalty owner lawsuits were settled and funded in July 2011 for $5.6 million.
     Other income was $29.4 million during the six months ended June 30, 2010, and $1.2 million during the six months ended June 30, 2011. Gain from derivative financial instruments was $43.2 million during the six months ended June 30, 2010, and $4.7 million during the six months ended June 30, 2011. We recorded a $28.9 million unrealized gain and $14.3 million realized gain on our derivative contracts for the six months ended June 30, 2010,

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compared to a $11.2 million unrealized loss and $15.9 million realized gain for the six months ended June 30, 2011. Interest expense, net, was $13.8 million during the six months ended June 30, 2010, and $5.3 million during the six months ended June 30, 2011. The decrease is primarily due to the September 2010 refinancing, which resulted in lower debt balances, lower interest rates and decreased amortization of debt issuance costs. Gain from forgiveness of debt was $1.6 million during the six months ended June 30, 2011.
Liquidity and Capital Resources
     Cash flows from operating activities have historically been driven by the quantities of our production, the prices received from the sale of this production, and from our pipeline revenue. Prices of oil and gas have historically been very volatile and can significantly impact the cash from the sale our production. Use of derivative financial instruments help mitigate this price volatility. Cash expenses also impact our operating cash flow and consist primarily of production operating costs, production taxes, interest on our indebtedness and general and administrative expenses.
     Our primary sources of liquidity for the six months ended June 30, 2011, were cash generated from our operations and commodity derivatives, cash from the sale of oil and gas properties and available borrowings under our borrowing base credit facility. At June 30, 2011, we had $40.3 million of availability under the facility, which included $1.7 million in outstanding letters of credit. Our borrowing base was redetermined effective as of July 31, 2011. On August 8, 2011, subsequent to funding the CEP acquisition and the Oklahoma royalty owner lawsuits, we had $4.3 million of availability under the facility.
     Cash Flows from Operating Activities
     Cash flows provided by operating activities were relatively flat, increasing $548,000 from $20.9 million for the six months ended June 30, 2010, to $21.5 million for the six months ended June 30, 2011.
     Cash Flows from Investing Activities
     Cash flows used in investing activities were $12.0 million for the six months ended June 30, 2010, compared to $4.6 million for the six months ended June 30, 2011. Capital expenditures were $12.2 million and $15.3 million for the six months ended June 30, 2010 and 2011, respectively. Cash proceeds from the second and third phases of our Appalachia Basin sale in 2011 were $10.7 million. The following table sets forth our capital expenditures, including costs we have incurred but not paid, by major categories for the six months ended June 30, 2011 (in thousands):
         
    Six Months Ended  
    June 30, 2011  
Capital expenditures
       
Leasehold acquisition
  $ 546  
Development
    13,812  
Pipelines
    407  
Other items
    1,371  
 
     
Total capital expenditures
  $ 16,136  
 
     
     Cash Flows from Financing Activities
     Cash flows used in financing activities were $10.3 million for the six months ended June 30, 2010, as compared to $16.3 million for the six months ended June 30, 2011. The cash used in financing activities for both periods was primarily for repayment of outstanding indebtedness.
Sources of Liquidity in 2011 and Capital Requirements
     As discussed above, at August 8, 2011, we had $4.3 million of availability under our borrowing base credit facility, which we utilize as an external source of long and short term liquidity. In addition, $30 million of capital may also be available from White Deer Energy, L.P. (“White Deer”) for acquisitions, an accelerated development

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program or other corporate purposes on mutually acceptable terms pursuant to our securities purchase agreement with White Deer.
     The borrowing base under our borrowing base credit facility was redetermined effective July 31, 2011, based on reserves at March 31, 2011. The borrowing base under that facility is determined based on the value of our oil and natural gas reserves at our lenders’ forward price forecasts, which are generally derived from futures prices. As a result of the significant decline in lender forward price forecasts since our borrowing base was last determined and the roll off of hedges, our borrowing base was reduced from $225 million to $200 million.
     On May 4, 2011, we filed a $100 million universal shelf registration statement on Form S-3 with the Securities and Exchange Commission (SEC), which became effective on May 13, 2011. We are initially limited to selling debt or equity securities under the shelf registration in one or more offerings over a 12 consecutive month period for a total initial public offering price not exceeding one third of our public equity float. That limit, at the time of effectiveness of the shelf, was approximately $21.8 million. The registration statement is intended to give us the flexibility to sell securities if and when market conditions and circumstances warrant, to provide funding for growth or other strategic initiatives, for debt reduction or refinancing and for other general corporate purposes. The actual amount and type of securities or combination of securities and the terms of those securities will be determined at the time of sale, if such sale occurs. If and when a particular series of securities is offered, the prospectus supplement relating to that offering will set forth our intended use of the net proceeds.
Appalachia Basin Sale
     On December 24, 2010, we entered into an agreement with Magnum Hunter Resources Corporation (“MHR”) to sell to MHR certain oil and gas properties and related assets in West Virginia. The sale closed in three phases for a total of $44.6 million. The first phase closed in December 2010 for $28 million; the second phase closed in January 2011 for $11.7 million and the third phase closed in June 2011 for $4.9 million. The amount received for the first and second phases was paid half in cash and half in MHR common stock while the amount received for the third phase was paid entirely in cash.
QER Loan
     Included in the $44.6 million aggregate purchase price paid by MHR was approximately $41.6 million representing the purchase price of assets owned by one of our subsidiaries, Quest Eastern Resource LLC (“QER”), pledged as collateral under the QER Loan. From the sale proceeds, we made payments to the lender, Royal Bank of Canada (“RBC”), in the amount of $21.2 million in December 2010, $9.3 million in January 2011 and $4.3 million in June 2011. Concurrent with the June 2011 payment and pursuant to the terms of an asset sale agreement with RBC, we fully settled the outstanding balance of the QER Loan of approximately $843,000 by issuing 141,186 shares of our common stock with a fair value of $744,000 to RBC. We expect to recover the full amount of the $843,000 payment to RBC through the release of escrowed proceeds from the Appalachia Basin asset sale in June 2012.
     In connection with the sale, $6.4 million of funds were placed into escrow subject to post closing indemnification. If all the escrowed funds are released to PostRock, and after the payment to us of approximately $843,000 to cover the issuance of stock to RBC described above, $4.6 million will be paid to RBC and $400,000 will be paid to a third party, with the remaining $614,000 paid to us.

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Dilution
     At June 30, 2011, we had 8,429,168 shares of common stock issued and outstanding. In addition, White Deer held warrants to purchase 20,204,259 shares of common stock at a weighted average exercise price of $3.25, and we had 308,175 unvested restricted stock units outstanding. Consequently, if these shares were included as outstanding, our outstanding shares would be 28,941,602 of which White Deer’s warrants represent approximately 70%. By exercising their warrants, White Deer can benefit from their respective percentage of all of our profits and growth. In addition, if White Deer begins to sell significant amounts of our common stock, or if public markets perceive that they may sell significant amounts of our common stock, the market price of our common stock may be significantly impacted.
Contractual Obligations
     We have numerous contractual commitments in the ordinary course of business, debt service requirements and operating lease commitments. During the first quarter of 2011, we entered into new operating leases for compressors utilized in our gathering system. The leases convert already utilized compressors from month-to-month to a specified term lease. As a result, the $900,000 minimum amount of these contracts would be an increase to the amount included in our outstanding commitments table at December 31, 2010. Other than the compressor leases and debt repayments during the six months ended June 30, 2011, there were no material changes to our commitments since December 31, 2010.
Forward-Looking Statements
     Various statements in this report, including those that express a belief, expectation, or intention, as well as those that are not statements of historical fact, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements include those regarding projections and estimates concerning the timing and success of specific projects; financial position; business strategy; budgets; amount, nature and timing of capital expenditures; drilling of wells and construction of pipeline infrastructure; acquisition and development of oil and natural gas properties and related pipeline infrastructure; timing and amount of future production of oil and natural gas; operating costs and other expenses; estimated future net revenues from oil and natural gas reserves and the present value thereof; cash flow and anticipated liquidity; funding of our capital expenditures; ability to meet our debt service obligations; and other plans and objectives for future operations.
     When we use the words “believe,” “intend,” “expect,” “may,” “will,” “should,” “anticipate,” “could,” “estimate,” “plan,” “predict,” “project,” or their negatives, or other similar expressions, the statements which include those words are usually forward-looking statements. When we describe strategy that involves risks or uncertainties, we are making forward-looking statements. The factors impacting these risks and uncertainties include, but are not limited to:
    current weak economic conditions;
    volatility of oil and natural gas prices;
    increases in the cost of drilling, completion and gas gathering or other costs of developing and producing our reserves;
    our debt covenants;
    access to capital, including debt and equity markets;
    results of our hedging activities;

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    drilling, operational and environmental risks; and
    regulatory changes and litigation risks.
     You should consider carefully the statements under Item 1A. Risk Factors included in our annual report on Form 10-K for the year ended December 31, 2010, which describe factors that could cause our actual results to differ from those set forth in the forward-looking statements. Our annual report on Form 10-K for the year ended December 31, 2010, is available on our website at www.pstr.com.
     We have based these forward-looking statements on our current expectations and assumptions about future events. The forward-looking statements in this report speak only as of the date of this report; we disclaim any obligation to update these statements unless required by securities law, and we caution you not to rely on them unduly. Readers are urged to carefully review and consider the various disclosures made by us in our reports filed with the SEC, which attempt to advise interested parties of the risks and factors that may affect our business, financial condition, results of operation and cash flows. If one or more of these risks or uncertainties materialize, or if the underlying assumptions prove incorrect, our actual results may vary materially from those expected or projected.
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.
     The following table summarizes the estimated volumes, fixed prices and fair value attributable to oil and gas derivative contracts at June 30, 2011. We currently do not have outstanding derivative contracts beyond 2013.
                                 
    Remainder of     Year Ending December 31,        
    2011     2012     2013     Total  
    ($ in thousands, except volumes and per unit data)  
Natural Gas Swaps
                               
Contract volumes (Mmbtu)
    6,822,618       11,000,004       9,000,003       26,822,625  
Weighted-average fixed price per Mmbtu
  $ 6.77     $ 7.13     $ 7.28     $ 7.09  
Fair value, net
  $ 16,060     $ 25,532     $ 18,715     $ 60,307  
Natural Gas Basis Swaps
                               
Contract volumes (Mmbtu)
    4,310,136       9,000,000       9,000,003       22,310,139  
Weighted-average fixed price per Mmbtu
  $ (0.69 )   $ (0.70 )   $ (0.71 )   $ (0.70 )
Fair value, net
  $ (2,187 )   $ (4,047 )   $ (3,715 )   $ (9,949 )
Crude Oil Swaps
                               
Contract volumes (Bbl)
    24,000       42,000             66,000  
Weighted-average fixed price per Bbl
  $ 85.90     $ 87.90     $     $ 87.17  
Fair value, net
  $ (264 )   $ (506 )   $     $ (770 )
Total fair value, net
  $ 13,609     $ 20,979     $ 15,000     $ 49,588  

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ITEM 4.   CONTROLS AND PROCEDURES
     Disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) are designed to ensure that information required to be disclosed in reports filed or submitted under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms and that such information is accumulated and communicated to management, including the principal executive officer and the principal financial officer, to allow timely decisions regarding required disclosures. There are inherent limitations to the effectiveness of any system of disclosure controls and procedures, including the possibility of human error and the circumvention or overriding of the controls and procedures. Accordingly, even effective disclosure controls and procedures can only provide reasonable assurance of achieving their control objectives.
     In connection with the preparation of this quarterly report on Form 10-Q, our management, under the supervision and with the participation of our principal executive officer and principal financial officer, conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures as of June 30, 2011. Based on that evaluation, our principal executive officer and principal financial officer concluded that, as of June 30, 2011, our disclosure controls and procedures were effective with respect to the recording, processing, summarizing and reporting, within the time periods specified in the SEC’s rules and forms, of information required to be disclosed by us in the reports that we file or submit under the Exchange Act.
     There were no changes in internal control over financial reporting that occurred during the quarter covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II — OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS.
     See Note 9 in Part I, Item 1 of this Quarterly Report entitled “Commitments and Contingencies,” which is incorporated herein by reference.
ITEM 1A. RISK FACTORS.
     For additional information about our risk factors, see Item 1A. “Risk Factors” in our 2010 10-K.
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.
     The information set forth in Note 7 in Part I, Item 1 of this Quarterly Report is incorporated herein by reference in response to this item. The additional warrants to purchase 329,070 shares of our common stock at an exercise price of $5.82 and the additional 3,290.70 shares of Series B preferred stock issued to White Deer were issued in reliance upon an exemption from registration pursuant to Section 4(2) under the Securities Act of 1933, as amended, which exempts transactions by an issuer not involving any public offering.
ITEM 3. DEFAULTS UPON SENIOR SECURITIES.
     None.
ITEM 5. OTHER INFORMATION.
     None.

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ITEM 6. EXHIBITS
     
2.1
  Purchase Agreement dated June 21, 2011, by and among PostRock Energy Corporation, Constellation Energy Commodities Group, Inc., Constellation Energy Partners Holdings, LLC and Constellation Energy Partners Management, LLC (incorporated herein by reference to Exhibit 2.1 to PostRock’s Current Report on Form 8-K filed on June 21, 2011).
 
   
31.1*
  Certification by principal executive officer pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
 
   
31.2*
  Certification by principal financial officer pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
 
   
32.1*
  Certification by principal executive officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
 
   
32.2*
  Certification by principal financial officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
 
   
101.INS**
  XBRL Instance Document.
 
   
101.SCH**
  XBRL Taxonomy Extension Schema Document.
 
   
101.CAL**
  XBRL Taxonomy Extension Calculation Linkbase Document.
 
   
101.LAB**
  XBRL Taxonomy Extension Labels Linkbase Document.
 
   
101.PRE**
  XBRL Taxonomy Extension Presentation Linkbase Document.
 
   
101.DEF**
  Taxonomy Extension Definition Linkbase Document.
 
*   Filed herewith.
 
**   Furnished not filed

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PLEASE NOTE: Pursuant to the rules and regulations of the Securities and Exchange Commission, we have filed or incorporated by reference the agreements referenced above as exhibits to this Quarterly Report on Form 10-Q. The agreements have been filed to provide investors with information regarding their respective terms. The agreements are not intended to provide any other factual information about the Company or its business or operations. In particular, the assertions embodied in any representations, warranties and covenants contained in the agreements may be subject to qualifications with respect to knowledge and materiality different from those applicable to investors and may be qualified by information in confidential disclosure schedules no included with the exhibits. These disclosure schedules may contain information that modifies, qualifies and creates exceptions to the representations, warranties and covenants set forth in the agreements. Moreover, certain representations, warranties and covenants in the agreements may have been used for the purpose of allocating risk between the parties, rather than establishing matters as facts. In addition, information concerning the subject matter of the representations, warranties and covenants may have changed after the date of the respective agreement, which subsequent information may or may not be fully reflected in the Company’s public disclosures. Accordingly, investors should not rely on the representations, warranties and covenants in the agreements as characterizations of the actual state of facts about the Company or its business or operations on the date hereof.

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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 this 10th day of August 2011.
         
  PostRock Energy Corporation
 
 
  By:   /s/ Terry Carter    
    Terry Carter   
    Interim Chief Executive Officer and President   
 
         
     
  By:   /s/ Jack T. Collins    
    Jack T. Collins   
    Executive Vice President and Chief Financial Officer   
 
         
     
  By:   /s/ David J. Klvac    
    David J. Klvac   
    Executive Vice President and Chief Accounting Officer   

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