PSTR / Northern Lights Fund Trust II - PeakShares Sector Rotation ETF - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Northern Lights Fund Trust II - PeakShares Sector Rotation ETF

Mga Batayang Estadistika
CIK 1473061
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Northern Lights Fund Trust II - PeakShares Sector Rotation ETF
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
April 1, 2016 EX-99.1

PostRock Announces Bankruptcy Filing

Exhibit 991-Notice of Bankruptcy Exhibit 99.1 PostRock Announces Bankruptcy Filing Oklahoma City, April 1, 2016 - PostRock Energy Corporation (OTC PINK:PSTR) (?PostRock?) today announced that it and its subsidiaries have filed voluntary petitions for relief under Chapter 11 of the United States Bankruptcy Code in the U.S. Bankruptcy Court for the Western District of Oklahoma to facilitate an order

April 1, 2016 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Triggering Events That Accelerate or Increase a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement, Bankruptcy or Receivership

8K - Notice of bankruptcy UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 30, 2016 NT 10-K

PostRock Energy NT 10-K

NT 10-K OMB Number: 3235-0058 Expires: August 31, 2015 Estimated average burden hours per response.

March 30, 2016 8-K

Other Events

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): March 30, 2016 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdicti

March 14, 2016 8-K

Financial Statements and Exhibits

8K - Notice of Acceleration of Debt Payable UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 14, 2016 EX-99.1

PostRock Receives Notice of Default

Exhibit 99.1-Notice of Acceleration Exhibit 99.1 PostRock Receives Notice of Default OKLAHOMA CITY - Mar. 14, 2016 - PostRock Energy Corporation (OTC PINK:PSTR) (?PostRock?) announced that it has received written notice from the Administrative Agent of the Third Amended and Restated Credit Agreement originally dated December 20, 2012 (the ?Credit Agreement?), that the lenders have accelerated the

March 3, 2016 EX-99.1

PostRock Receives Notice of Default

Exhibit 991-Notice of Credit Default Exhibit 99.1 PostRock Receives Notice of Default OKLAHOMA CITY - Feb. 29, 2016 - PostRock Energy Corporation (OTC PINK:PSTR) (?PostRock?) announced that it has received written notice from the Administrative Agent of the Third Amended and Restated Credit Agreement originally dated December 20, 2012 (the ?Credit Agreement?), that PostRock is in default of the Cr

March 3, 2016 8-K

Financial Statements and Exhibits

8-K 1 pstr-20160303x8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): February 29, 2016 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (

February 25, 2016 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

8K - Credit default UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

February 25, 2016 EX-99.1

PostRock is Unable to Reduce Its Debt Outstanding

Exhibit 991 Exhibit 99.1 PostRock is Unable to Reduce Its Debt Outstanding OKLAHOMA CITY - Feb. 25, 2016 - PostRock Energy Corporation (OTC PINK:PSTR) (?PostRock?) announced that to date PostRock has been unable to reduce the amount outstanding under its credit facility to the $39 million borrowing base. PostRock also announces that it did not make the quarterly interest payment due February 11, 2

January 5, 2016 8-K

Current Report

8K - COOP Asset Sale Closing UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

November 20, 2015 8-K

Current Report

8K - COOP Asset Sale UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

November 19, 2015 EX-99.1

PostRock’s Borrowing Base Re-determined

Borrowing Base Press Release attach Exhibit 99.1 PostRock?s Borrowing Base Re-determined OKLAHOMA CITY ? November 17, 2015 ? PostRock Energy Corporation (OTC PINK:PSTR) (?PostRock?) today announced that the borrowing base on its bank credit facility was set at $39 million as of November 1, 2015. This reflects a $37 million reduction from the $76 million borrowing base which was last re-determined

November 19, 2015 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

8K - Borrowing Base Redetermination - Nov 15 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

November 12, 2015 10-Q

PostRock Energy 10-Q (Quarterly Report)

10Q - Q3 2015 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

November 12, 2015 EX-99.1

PostRock Reports Third Quarter Results

Exhibit 991 Q1 Earnings Press Release-Q3 PostRock Reports Third Quarter Results OKLAHOMA CITY ? November 11, 2015 ? PostRock Energy Corporation (OTC Pink:PSTR) today announced its results for the quarter ended September 30, 2015.

November 12, 2015 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K Earnings Press Release Cover Page-Q3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

November 3, 2015 8-K

PostRock Energy 8-K (Current Report/Significant Event)

8K - Oct 30 Thomas Edelman Resignation UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

September 4, 2015 8-K

PostRock Energy 8-K (Current Report/Significant Event)

8K - Aug 31 Officer Resignation UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

August 31, 2015 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

8K - Notice of Delisting Aug 31 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

August 19, 2015 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

8K - Delisting Notice Aug 14 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

August 7, 2015 EX-4.10

FOURTH AMENDMENT TO POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN

S-8 LTIP Plan Exhibit 410 EXHIBIT 4.10 FOURTH AMENDMENT TO POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN WHEREAS, PostRock Energy Corporation, a Delaware corporation (the ?Company?), has established and maintains the PostRock Energy Corporation 2010 Long-Term Incentive Plan (the ?Plan?); and WHEREAS, pursuant to Article 15 of the Plan, the Company has the right to amend the Plan at any

August 7, 2015 S-8

PostRock Energy S-8

S-8 LTIP Plan2 As filed with the Securities and Exchange Commission on August 7, 2015 Registration No.

August 7, 2015 S-8

PostRock Energy S-8

S-8 Deferred Comp Plan As filed with the Securities and Exchange Commission on August 7, 2015 Registration No.

August 6, 2015 EX-99.1

PostRock Reports Second Quarter Results

Exhibit 99.1 Q1 Earnings Press Release-Q2 PostRock Reports Second Quarter Results OKLAHOMA CITY ? August 5, 2015 ? PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the quarter ended June 30, 2015. Highlights ? Revenue totaled $11.2 million for the three months ended June 30, 2015, down 48% from the prior-year period. Realized oil and natural gas prices were down 47% and 4

August 6, 2015 10-Q

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, 2015 Commission file number: 001-34635 POSTROC

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, 2015 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other jurisdiction of (I.R

August 6, 2015 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q/A (Amendment No. 1) QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2015 Commission file numb

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q/A (Amendment No. 1) QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2015 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other

August 6, 2015 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): August 5, 2015 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inc

August 6, 2015 EX-10.1

FIRST AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT

Exhibit 10.1 FIRST AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT THIS FIRST AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT (this “First Amendment”) is entered into as of June 24, 2015 among POSTROCK ENERGY SERVICES CORPORATION, a Delaware corporation (“PESC”), POSTROCK MIDCONTINENT PRODUCTION, LLC, a Delaware limited liability company (“MidContinent” and together with PESC, co

June 30, 2015 8-K

Current Report

8K - Borrowing Base Redetermination UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

June 29, 2015 11-K

PostRock Energy 11-K

11K - 2014 FY UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ? ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2014 or ? TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File No. 001-34635 A. Full title of the plan and the address of the plan, if dif

May 19, 2015 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

8-K 701 Reg FD Disclosure UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

May 19, 2015 EX-99.1

EX-99.1

8-K May 20 7.01 Reg FD Disclosure

May 14, 2015 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K Earnings Press Release Cover Page UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

May 14, 2015 EX-99.1

PostRock Reports First Quarter Results

Exhibit 991 Q1 Earnings Press Release PostRock Reports First Quarter Results OKLAHOMA CITY ? May 13, 2015 ? PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the quarter ended March 31, 2015.

May 14, 2015 10-Q

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 March 31, 2015 Commission file number: 001-34635 POSTRO

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 March 31, 2015 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other jurisdiction of (I.

May 8, 2015 8-K

Submission of Matters to a Vote of Security Holders

May 8 8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): May 5, 2015 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction

May 1, 2015 8-K

8-K

8K - May 1 Officer Resignation UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

April 24, 2015 8-K

Other Events

8K Other Event - Apr 22 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

April 15, 2015 DEF 14A

PostRock Energy DEFINITIVE PROXY STATEMENT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of t

March 31, 2015 EX-99.1

February 12, 2015

EXHIBIT 99.1 12 February 12, 2015 Mr. Terry Carter Chief Executive Officer, President Postrock Energy Corporation 210 Park Avenue, Suite 2750 Oklahoma City, OK 73102 Re: Evaluation Summary Postrock Energy Corporation Interests Proved Reserves As of December 31, 2014 Dear Mr. Carter: As requested, we are submitting our estimates of proved reserves and our forecasts of the resulting economics attrib

March 31, 2015 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2014 Commission file number: 001-34635 PostR

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2014 Commission file number: 001-34635 PostRock Energy Corporation (Exact Name of Registrant as Specified in Its Charter) Delaware 27-0981065 (State or Other Jurisdiction of In

March 31, 2015 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K Earnings Press Release Cover Page UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 31, 2015 EX-99.1

PostRock Reports 2014 Results

Exhibit 991 Q4 Earnings Press Release PostRock Reports 2014 Results OKLAHOMA CITY ? March 30, 2015 ? PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the year ended December 31, 2014.

March 31, 2015 EX-21.1

SUBSIDIARIES OF POSTROCK ENERGY CORPORATION

EXHIBIT 21.1 SUBSIDIARIES OF POSTROCK ENERGY CORPORATION PostRock MidContinent Production, LLC, a Delaware limited liability company PostRock Energy Services Corporation, a Delaware close corporation PostRock Eastern Production, LLC, a Delaware limited liability company PostRock Holdco, LLC, a Kansas limited liability company STP Newco, Inc., an Oklahoma corporation Constellation Energy Partners M

March 24, 2015 8-K

Non-Reliance on Previously Issued Financial Statements or a Related Audit Report or Completed Interim Review

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): March 20, 2015 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of Inc

March 18, 2015 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

8K - Mar 17 Lynch Committee Assignments UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 13, 2015 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): March 11, 2015 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of Inc

February 10, 2015 424B5

POSTROCK ENERGY CORPORATION Common Stock

PROSPECTUS SUPPLEMENT (To prospectus dated September 4, 2014) POSTROCK ENERGY CORPORATION $3,800,000 Common Stock This prospectus supplement and the accompanying prospectus relate to the issuance and sale of shares of our common stock from time to time having an aggregate offering price of up to $3,800,000 through our sales agent, MLV & Co.

February 10, 2015 EX-10.1

POSTROCK ENERGY CORPORATION Common Stock (par value $0.01 per share) At-The-Market Issuance Sales Agreement

Exhibit 10.1 POSTROCK ENERGY CORPORATION Common Stock (par value $0.01 per share) At-The-Market Issuance Sales Agreement February 10, 2015 MLV & Co. LLC 1251 Avenue of the Americas 41st Floor New York, NY 10020 Ladies and Gentlemen: PostRock Energy Corporation, a Delaware corporation (the “Company”), confirms its agreement (this “Agreement”) with MLV & Co. LLC, a Delaware limited liability company

February 10, 2015 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events

8-K 1 pstr-20150210x8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): February 6, 2015 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (S

February 10, 2015 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): February 10, 2015 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of

February 9, 2015 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): February 5, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of I

February 9, 2015 EX-99.1

PostRock Announces Cost Reductions, Provides Update and Sets 2015 Capex Plan

PostRock Announces Cost Reductions, Provides Update and Sets 2015 Capex Plan OKLAHOMA CITY – February 5, 2015 – PostRock Energy Corporation (Nasdaq: PSTR) (“PostRock”) today provided an update.

February 6, 2015 SC 13G/A

PSTR / PostRock Energy Corp / MEAD ROBERT E - AMENDMENT Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* POSTROCK ENERGY CORPORATION (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 737525105 (CUSIP Number) December 31, 2014 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule p

January 6, 2015 EX-4.1

CERTIFICATE OF AMENDMENT RESTATED CERTIFICATE OF INCORPORATION

Exhibit 4.1 CERTIFICATE OF AMENDMENT of RESTATED CERTIFICATE OF INCORPORATION PostRock Energy Corporation (the “Corporation”), a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the “DGCL”), hereby adopts this Certificate of Amendment (this “Certificate of Amendment”), which amends its Restated Certificate of Incorporation (the “Certif

January 6, 2015 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Material Modification to Rights of Security Holders, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

8-K 1 pstr-20150106x8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): December 30, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (

January 6, 2015 EX-4.2

CERTIFICATE OF AMENDMENT CERTIFICATE OF DESIGNATIONS SERIES B VOTING PREFERRED STOCK POSTROCK ENERGY CORPORATION PURSUANT TO SECTION 242 OF THE DELAWARE GENERAL CORPORATION LAW

Exhibit 4.2 CERTIFICATE OF AMENDMENT to CERTIFICATE OF DESIGNATIONS of SERIES B VOTING PREFERRED STOCK of POSTROCK ENERGY CORPORATION PURSUANT TO SECTION 242 OF THE DELAWARE GENERAL CORPORATION LAW PostRock Energy Corporation (the “Corporation”), a corporation organized and existing under the General Corporation Law of the State of Delaware (the “DGCL”), hereby certifies as follows: FIRST, on Sept

December 30, 2014 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): December 23, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of

December 18, 2014 EX-99.1

NOTICE UNDER RULE 104 OF REGULATION BTR

NOTICE UNDER RULE 104 OF REGULATION BTR TO: Directors and Executive Officers FROM: Stephen DeGiusti RE: SOX Blackout Period DATE: December 18, 2014 As a director or executive officer of PostRock Energy Corporation (the “Corporation”), you are subject to the restrictions under Section 306(a) of the Sarbanes-Oxley Act of 2002 (“SOX”) and the Securities and Exchange Commission regulations, which prohibit certain trades during plan “blackout” periods.

December 18, 2014 8-K

Temporary Suspension of Trading Under Registrant's Employee Benefit Plans, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): December 18, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of

December 4, 2014 EX-16.1

, 2014

Exhibit 16.1 December 3, 2014 Securities and Exchange Commission 100 F Street NE Washington, DC 20549 Ladies and Gentlemen: We have read Item 4.01 of Form 8-K dated December 1, 2014, of PostRock Energy Corporation and are in agreement with the statements in the paragraphs within that Item as they relate to our firm. We have no basis to agree or disagree with other statements of the registrant cont

December 4, 2014 8-K

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): December 1, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of I

December 1, 2014 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): November 24, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of

November 25, 2014 DEF 14A

PSTR / PostRock Energy Corp DEF 14A - - DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐Preliminary Proxy Statement ☐Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☑Definiti

November 14, 2014 PRE 14A

PSTR / PostRock Energy Corp PRE 14A - - PRELIMINARY PROXY STATEMENT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant R Filed by a Party other than the Registrant ☐ Check the appropriate box: R Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

November 6, 2014 10-Q

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 September 30, 2014 Commission file number: 001-34635 PO

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 September 30, 2014 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other jurisdiction of

November 6, 2014 EX-99.1

PostRock Reports Third Quarter Results

PostRock Reports Third Quarter Results OKLAHOMA CITY – November 5, 2014 – PostRock Energy Corporation (NASDAQ: PSTR) (“PostRock” or the “Company”) today announced results for the quarter ended September 30, 2014.

November 6, 2014 EX-10.2

FIRST AMENDMENT TO SECURITIES PURCHASE AGREEMENT DATED DECEMBER 17, 2012

Exhibit 10.2 FIRST AMENDMENT TO SECURITIES PURCHASE AGREEMENT DATED DECEMBER 17, 2012 This First Amendment To Securities Purchase Agreement Dated December 17, 2012 (the “First Amendment”) is made and entered into this 29th day of July, 2014, by and among PostRock Energy Corporation, a Delaware corporation (“PostRock”), White Deer Energy L.P., a Cayman Islands exempted limited partnership, White De

November 6, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): November 5, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of I

November 6, 2014 EX-10.1

FIRST AMENDMENT TO SECURITIES PURCHASE AGREEMENT DATED AUGUST 1, 2012

Exhibit 10.1 FIRST AMENDMENT TO SECURITIES PURCHASE AGREEMENT DATED AUGUST 1, 2012 This First Amendment To Securities Purchase Agreement Dated August 1, 2012 (the “First Amendment”) is made and entered into this 29th day of July, 2014, by and among PostRock Energy Corporation, a Delaware corporation (“PostRock”), White Deer Energy L.P., a Cayman Islands exempted limited partnership, White Deer Ene

November 5, 2014 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9) PostRock Energy Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 737525105 (CUSIP Number) Thomas J. Edelman White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-6900 (Name, Address and Teleph

October 30, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - AMENDMENT NO 13 TO SCHEDULE 13D Activist Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 13)* SANCHEZ PRODUCTION PARTNERS, LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Address and T

October 29, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SC 13D/A 1 d811048dsc13da.htm SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 12)* SANCHEZ PRODUCTION PARTNERS, LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73

October 10, 2014 EX-10.1

PREFERRED STOCK EXCHANGE AGREEMENT

PREFERRED STOCK EXCHANGE AGREEMENT This Preferred Stock Exchange Agreement (this “Agreement”) is made and entered into this 9th day of October, 2014, by and between PostRock Energy Corporation, a Delaware corporation (“PostRock”) and White Deer Energy L.

October 10, 2014 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): October 9, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of In

September 3, 2014 CORRESP

PSTR / PostRock Energy Corp CORRESP - -

POSTROCK ENERGY CORPORATION 210 Park Avenue Oklahoma City, OK 73102 September 3, 2014 Via EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

September 2, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D AMENDMENT NO. 11 Activist Investment

SC 13D/A 1 d783637dsc13da.htm SC 13D AMENDMENT NO. 11 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 11)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Okla

August 21, 2014 CORRESP

PSTR / PostRock Energy Corp CORRESP - -

Correspondence POSTROCK ENERGY CORPORATION 210 Park Avenue Oklahoma City, OK 73102 August 21, 2014 Via EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

August 21, 2014 EX-12.1

POSTROCK ENERGY CORPORATION RATIOS OF EARNINGS TO FIXED CHARGES AND TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS Predecessors Year Ended December 31, January 1 to March 5, March 6 to December 31, Year Ended December 31, Six Mon

EX-12.1 Exhibit 12.1 POSTROCK ENERGY CORPORATION RATIOS OF EARNINGS TO FIXED CHARGES AND TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDEND REQUIREMENTS Predecessors Year Ended December 31, January 1 to March 5, March 6 to December 31, Year Ended December 31, Six Months Ended June 31, 2009 2010 2010 2011 2012 2013 2014 ($ in thousands) Earnings Income (loss) from continuing operations before i

August 21, 2014 S-3/A

PSTR / PostRock Energy Corp S-3/A - - S-3/A

S-3/A Table of Contents As filed with the Securities and Exchange Commission on August 21, 2014 Registration No.

August 19, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 10)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Add

August 8, 2014 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): August 8, 2014 (July 29, 2014) POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jur

August 8, 2014 EX-4.1

CERTIFICATE OF AMENDMENT SECOND AMENDED AND RESTATED CERTIFICATE OF DESIGNATIONS SERIES A CUMULATIVE REDEEMABLE PREFERRED STOCK POSTROCK ENERGY CORPORATION PURSUANT TO SECTION 242 OF THE DELAWARE GENERAL CORPORATION LAW

EXHIBIT 4.1 CERTIFICATE OF AMENDMENT to SECOND AMENDED AND RESTATED CERTIFICATE OF DESIGNATIONS of SERIES A CUMULATIVE REDEEMABLE PREFERRED STOCK of POSTROCK ENERGY CORPORATION PURSUANT TO SECTION 242 OF THE DELAWARE GENERAL CORPORATION LAW PostRock Energy Corporation (the “Corporation”), a corporation organized and existing under the General Corporation Law of the State of Delaware (the “DGCL”),

August 7, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): August 6, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inc

August 7, 2014 EX-99.1

PostRock Reports Second Quarter Results

PostRock Reports Second Quarter Results OKLAHOMA CITY – August 6, 2014 – PostRock Energy Corporation (NASDAQ: PSTR) today announced results for the quarter ended June 30, 2014.

August 7, 2014 10-Q

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, 2014 Commission file number: 001-34635 POSTROC

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, 2014 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other jurisdiction of (I.R

August 7, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Addr

July 22, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Addr

July 10, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Addr

June 30, 2014 11-K

PSTR / PostRock Energy Corp 11-K - - 11-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 11-K ☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2013 or ☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File No. 001-34635 A. Full title of the plan and the address of the plan, if different from th

June 30, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Addr

June 5, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 5)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Addr

May 22, 2014 8-K

Submission of Matters to a Vote of Security Holders

8-K 1 pstr-20140522x8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): May 20, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State

May 14, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): April 13, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inc

May 14, 2014 EX-99.1

PostRock Reports First Quarter Results

PostRock Reports First Quarter Results OKLAHOMA CITY – May 13, 2014 – PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the quarter ended March 31, 2014.

May 13, 2014 10-Q

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 March 31, 2014 Commission file number: 001-34635 POSTRO

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 March 31, 2014 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other jurisdiction of (I.

May 12, 2014 S-3

- FORM S-3

Form S-3 Table of Contents As filed with the Securities and Exchange Commission on May 12, 2014 Registration No.

April 7, 2014 DEF 14A

- DEF 14A

DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

April 7, 2014 DEFA14A

- DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

April 4, 2014 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): March 31, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inc

April 4, 2014 EX-99.1

PostRock Finalizes CEP Settlement

EX-99.1 4 pstr-20140404ex9919fe664.htm EX-99.1 Exhibit 99.1 PostRock Finalizes CEP Settlement OKLAHOMA CITY – March 31, 2014 – PostRock Energy Corporation (NASDAQ: PSTR) today announced that a full and final settlement of its suit against Constellation Energy Partners, LLC (“CEP”) and Sanchez Energy Partners I, LP (“SEPI”) et al. had been reached. As previously reported, PostRock expects to recove

April 4, 2014 EX-10.1

SETTLEMENT AGREEMENT

Exhibit 10.1 SETTLEMENT AGREEMENT This Settlement Agreement (“Agreement”) is made and entered into as of this 31st day of March, 2014 by (1) Plaintiffs Constellation Energy Partners Management, LLC (“CEPM”), Gary M. Pittman, and John R. Collins (collectively, “Plaintiffs”); (2) Defendants Stephen R. Brunner, Richard S. Langdon, Richard H. Bachmann, John N. Seitz, and Constellation Energy Partners

April 3, 2014 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) Casey Bigelow 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Address and T

April 3, 2014 EX-99.J

SETTLEMENT AGREEMENT

EX-99.J Exhibit J SETTLEMENT AGREEMENT This Settlement Agreement (“Agreement”) is made and entered into as of this 31st day of March, 2014 by (1) Plaintiffs Constellation Energy Partners Management, LLC (“CEPM”), Gary M. Pittman, and John R. Collins (collectively, “Plaintiffs”); (2) Defendants Stephen R. Brunner, Richard S. Langdon, Richard H. Bachmann, John N. Seitz, and Constellation Energy Part

April 2, 2014 SC 13G/A

PSTR / PostRock Energy Corp / MEAD ROBERT E - SCHEDULE 13G AMENDMENT NO. 2 Passive Investment

Schedule 13G Amendment No. 2 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) POSTROCK ENERGY CORPORATION (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 737525105 (CUSIP Number) December 31, 2013 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to design

March 28, 2014 EX-10.42

WARRANT EXCHANGE AGREEMENT

EXHIBIT 10.42 WARRANT EXCHANGE AGREEMENT This Warrant Exchange Agreement (the "Agreement") is made and entered this 27th day of November, 2013, by and between PostRock Energy Corporation ("PostRock") and White Deer Energy L.P., White Deer Energy TW L.P. and White Deer Energy FI L.P. (collectively, "White Deer") pursuant to the following recitations, terms and conditions. Whereas, as of the date he

March 28, 2014 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2013 Commission file number: 001-34635 PostR

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2013 Commission file number: 001-34635 PostRock Energy Corporation (Exact Name of Registrant as Specified in Its Charter) Delaware 27-0981065 (State or Other Jurisdiction of In

March 28, 2014 EX-2.5

PURCHASE AND SALE AGREEMENT BY AND AMONG WEST STAR OPERATING COMPANY, WEST STAR EXPLORATION AND PRODUCTION COMPANY AND SHALCO ENERGY (DELAWARE), LLC AS SELLERS, POSTROCK MIDCONTINENT PRODUCTION, LLC AS PURCHASER, AND, FOR THE LIMITED PURPOSES SET FOR

EXHIBIT 2.5 Execution Version PURCHASE AND SALE AGREEMENT BY AND AMONG WEST STAR OPERATING COMPANY, WEST STAR EXPLORATION AND PRODUCTION COMPANY AND SHALCO ENERGY (DELAWARE), LLC AS SELLERS, AND POSTROCK MIDCONTINENT PRODUCTION, LLC AS PURCHASER, AND, FOR THE LIMITED PURPOSES SET FORTH HEREIN, POSTROCK ENERGY CORPORATION DATED OCTOBER 14, 2013 TABLE OF CONTENTS ARTICLE 1 DEFINITIONS AND INTERPRETA

March 28, 2014 EX-21.1

SUBSIDIARIES OF POSTROCK ENERGY CORPORATION

EXHIBIT 21.1 SUBSIDIARIES OF POSTROCK ENERGY CORPORATION PostRock MidContinent Production, LLC, a Delaware limited liability company PostRock Energy Services Corporation, a Delaware close corporation PostRock Eastern Production, LLC, a Delaware limited liability company PostRock Holdco, LLC, a Kansas limited liability company STP Newco, Inc., an Oklahoma corporation Constellation Energy Partners M

March 28, 2014 EX-4.9

REGISTRATION RIGHTS AGREEMENT

EXHIBIT 4.9 Execution Version REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (this "Agreement") is made and entered into as of November 1, 2013, by and among PostRock Energy Corporation, a Delaware corporation (together with any successor entity thereto, the "Corporation"), West Star Operating Company, an Oklahoma corporation, and West Star Exploration and Production Company, an

March 28, 2014 EX-99.1

February 25, 2014

EXHIBIT 99.1 February 25, 2014 Mr. Terry Carter Chief Executive Officer, President Postrock Energy Corporation 210 Park Avenue, Suite 2750 Oklahoma City, OK 73102 Re: Evaluation Summary Postrock Energy Corporation Interests Proved Reserves As of December 31, 2013 Dear Mr. Carter: As requested, we are submitting our estimates of proved reserves and our forecasts of the resulting economics attributa

March 27, 2014 EX-99.1

PostRock Reports 2013 Results

For Immediate Release PostRock Reports 2013 Results OKLAHOMA CITY – March 26, 2014 – PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the year ended December 31, 2013.

March 27, 2014 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): March 26, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inc

March 27, 2014 8-K

- 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): March 21, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inc

March 20, 2014 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(D) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 14, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-34635 27-0981065 (State or other jurisdiction of incorporation) (Commiss

January 14, 2014 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): January 9, 2014 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) DELAWARE 001-34635 27-0981065 (State or other jurisdiction of Incorporation

December 20, 2013 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8) PostRock Energy Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 737525105 (CUSIP Number) Thomas J. Edelman White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-6900 (Name, Address a

December 4, 2013 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities - 8-K

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): November 27, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-34635 27-0981065 (State or other jurisdiction of incorporation) (

November 7, 2013 EX-99.1

PostRock Reports Third Quarter Results

For Immediate Release PostRock Reports Third Quarter Results OKLAHOMA CITY – November 6, 2013 – PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the quarter ended September 30, 2013.

November 7, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): November 6, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of I

November 6, 2013 10-Q

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 September 30, 2013 Commission file number: 001-34635 PO

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 September 30, 2013 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other jurisdiction of

October 18, 2013 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 14, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-34635 27-0981065 (State or other jurisdiction of incorporatio

August 29, 2013 8-K

Financial Statements and Exhibits, Other Events - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): August 23, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdict

August 29, 2013 EX-1.1

Amendment No. 1 to At-The-Market Issuance Sales Agreement

EX-1.1 Exhibit 1.1 Amendment No. 1 to At-The-Market Issuance Sales Agreement August 23, 2013 MLV & Co. LLC (formerly, McNicoll, Lewis & Vlak LLC) 1251 Avenue of the Americas, 41st Floor New York, NY 10020 Ladies and Gentlemen: Reference is made to the At-the-Market Issuance Sales Agreement, dated August 23, 2011, including the Schedules thereto (the “Sales Agreement”), between McNicoll, Lewis & Vl

August 14, 2013 EX-10.1

THIRD AMENDMENT TO POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN

Exhibit 10.1 THIRD AMENDMENT TO POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN WHEREAS, PostRock Energy Corporation, a Delaware corporation (the “Company”), has established and maintains the PostRock Energy Corporation 2010 Long-Term Incentive Plan (the “Plan”); and WHEREAS, pursuant to Article 15 of the Plan, the Company has the right to amend the Plan at any time by action of the Boar

August 14, 2013 10-Q

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, 2013 Commission file number: 001-34635 POSTROC

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, 2013 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other jurisdiction of (I.R

August 8, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): August 7, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inc

August 8, 2013 EX-99.1

PostRock Reports Second Quarter Results

EX-99.1 Exhibit 99.1 For Immediate Release PostRock Reports Second Quarter Results OKLAHOMA CITY – August 7, 2013 – PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the quarter ended June 30, 2013. Highlights • Quarterly oil sales averaged over 540 net barrels a day, more than double the prior-year period and 50% more than the prior quarter • Current oil production at ove

July 30, 2013 DEFA14A

- FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): July 26, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdictio

July 30, 2013 8-K

Other Events - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): July 26, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdictio

July 30, 2013 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) David J. Klvac 210 Park Avenue Oklahoma City, OK 73102 (405) 600-7704 (Name, Add

July 30, 2013 EX-99.J

Notice to Secretary of Intention to Nominate Persons for Election as Members of the Board of Managers CONSTELLATION ENERGY PARTNERS MANAGEMENT, LLC

EX-99.J CUSIP No. 21038E 10 1 Page 15 of 41 Exhibit J Notice to Secretary of Intention to Nominate Persons for Election as Members of the Board of Managers CONSTELLATION ENERGY PARTNERS MANAGEMENT, LLC July 26, 2013 VIA MESSENGER AND MAIL Constellation Energy Partners LLC 1801 Main Street, Suite 1300 Houston, TX 77002 Attention: Elizabeth A. Evans, Corporate Secretary Re: Notice of Intent to Nomin

July 11, 2013 EX-99.1

PostRock Provides Operational Update

EX-99.1 Exhibit 99.1 For Immediate Release PostRock Provides Operational Update OKLAHOMA CITY – July 11, 2013 – PostRock Energy Corporation (NASDAQ: PSTR) today provided an update on its operations. During the second quarter, the Company spent approximately $11.9 million on development projects, primarily targeting oil development and infrastructure. The Company’s debt at June 30 totaled $77.5 mil

July 11, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): July 11, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdictio

July 8, 2013 8-K

Unregistered Sales of Equity Securities - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): July 1, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction

May 13, 2013 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Submission of Matters to a Vote of Security Holders - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): May 7, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-34635 27-0981065 (State or other jurisdiction of Incorporation or

May 10, 2013 EX-4.8

THIRD AMENDMENT POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN

Exhibit 4.8 Exhibit 4.8 THIRD AMENDMENT TO POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN WHEREAS, PostRock Energy Corporation, a Delaware corporation (the “Company”), has established and maintains the PostRock Energy Corporation 2010 Long-Term Incentive Plan (the “Plan”); and WHEREAS, pursuant to Article 15 of the Plan, the Company has the right to amend the Plan at any time by action

May 10, 2013 S-8

- FORM S-8

FORM S-8 As filed with the Securities and Exchange Commission on May 10, 2013 Registration No.

May 10, 2013 S-8

- FORM S-8

FORM S-8 As filed with the Securities and Exchange Commission on May 10, 2013 Registration No.

May 9, 2013 EX-10.2

THE EXECUTIVE NONQUALIFIED EXCESS PLAN PLAN DOCUMENT

Exhibit 10.2 THE EXECUTIVE NONQUALIFIED EXCESS PLAN PLAN DOCUMENT DD 2326-6 THE EXECUTIVE NONQUALIFIED EXCESS PLAN Section 1. Purpose: By execution of the Adoption Agreement, the Employer has adopted the Plan set forth herein, and in the Adoption Agreement, to provide a means by which certain management Employees or Independent Contractors of the Employer may elect to defer receipt of current Comp

May 9, 2013 EX-10.1

THE EXECUTIVE NONQUALIFIED “EXCESS” PLAN ADOPTION AGREEMENT

EX-10.1 Exhibit 10.1 NOTE: Execution of this Adoption Agreement creates a legal liability of the Employer with significant tax consequences to the Employer and Participants. Principal Life Insurance Company disclaims all liability for the legal and tax consequences which result from the elections made by the Employer in this Adoption Agreement. Principal Life Insurance Company, Raleigh, NC 27612 A

May 9, 2013 EX-99.1

PostRock Reports First Quarter Results

EX-99.1 Exhibit 99.1 For Immediate Release PostRock Reports First Quarter Results OKLAHOMA CITY – May 8, 2013 – PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the quarter ended March 31, 2013. Highlights • During the quarter, 55 oil wells were drilled and 42 recompleted • Oil sales averaged 363 net Bbls a day, a 77.4% increase from the prior-year period • Production cur

May 9, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): May 8, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction

May 9, 2013 10-Q

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 March 31, 2013 Commission file number: 001-34635 POSTRO

Form 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 11, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): April 8, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdictio

April 11, 2013 EX-99.1

PostRock Provides Operations Update

EX-99.1 Exhibit 99.1 For Immediate Release PostRock Provides Operations Update OKLAHOMA CITY – April 8, 2013 – PostRock Energy Corporation (NASDAQ: PSTR) today provided an update on its production and capital projects for the first quarter of 2013. During the quarter, approximately $9 million was spent on development. Net oil sales during the quarter averaged slightly more than 360 Bbls a day, a 7

April 5, 2013 8-K

Unregistered Sales of Equity Securities - FORM 8-K

FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): April 1, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdictio

March 26, 2013 DEF 14A

- FORM DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) þ Defin

March 26, 2013 DEFA14A

- DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

March 22, 2013 424B2

POSTROCK ENERGY CORPORATION Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-173896 PROSPECTUS SUPPLEMENT (To prospectus dated May 13, 2011) POSTROCK ENERGY CORPORATION $5,000,000 Common Stock This prospectus supplement and the accompanying prospectus relate to the issuance and sale of shares of our common stock from time to time having an aggregate offering price of up to $5,000,000 through our sales

March 22, 2013 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): March 22, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction of Inc

March 12, 2013 EX-10.15

POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN RESTRICTED SHARE AWARD AGREEMENT Date of Grant: [ ] Number of Restricted Shares: [ ]

EX-10.15 Exhibit 10.15 POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN RESTRICTED SHARE AWARD AGREEMENT Date of Grant: [ ] Number of Restricted Shares: [ ] This Restricted Share Award Agreement (the “Agreement”) is made by and between PostRock Energy Corporation, a Delaware corporation (the “Company”), and [ ] (“Participant”). RECITALS: A. The Company established the 2010 Long-Term Incen

March 12, 2013 EX-10.34

SECOND AMENDMENT TO AMENDED AND RESTATED INTERCREDITOR AND COLLATERAL AGENCY AGREEMENT

Exhibit 10.34 EXECUTION SECOND AMENDMENT TO AMENDED AND RESTATED INTERCREDITOR AND COLLATERAL AGENCY AGREEMENT THIS SECOND AMENDMENT TO AMENDED AND RESTATED INTERCREDITOR AND COLLATERAL AGENCY AGREEMENT (the “Amendment”) dated as of December 20, 2012 (the “Amendment Effective Date”) is entered into by and among ROYAL BANK OF CANADA, in its capacity as resigning administrative agent and resigning c

March 12, 2013 EX-10.32

THIRD AMENDED AND RESTATED CREDIT AGREEMENT POSTROCK ENERGY SERVICES CORPORATION, as a Borrower, POSTROCK MIDCONTINENT PRODUCTION, LLC, as a Borrower, CITIBANK, N.A., as Administrative Agent and Collateral Agent The Lenders Party Hereto $200,000,000

EX-10.32 Exhibit 10.32 EXECUTION THIRD AMENDED AND RESTATED CREDIT AGREEMENT Among POSTROCK ENERGY SERVICES CORPORATION, as a Borrower, POSTROCK MIDCONTINENT PRODUCTION, LLC, as a Borrower, CITIBANK, N.A., as Administrative Agent and Collateral Agent and The Lenders Party Hereto $200,000,000 SENIOR SECURED REVOLVING CREDIT FACILITY CITIBANK, N.A., As Lead Arranger and Sole Bookrunner Dated as of D

March 12, 2013 EX-10.19

POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN STOCK OPTION AWARD AGREEMENT Date of Grant: [ ] Number of Shares Subject to Option: [ ] Option Price: [$ ] Expiration Date: [ ]

Exhibit 10.19 POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN STOCK OPTION AWARD AGREEMENT Date of Grant: [ ] Number of Shares Subject to Option: [ ] Option Price: [$ ] Expiration Date: [ ] This Option Award Agreement (the “Agreement”) dated [ ], 20 , is made by and between PostRock Energy Corporation, a Delaware corporation (the “Company”), and [ ] (“Participant”). RECITALS: A. The Comp

March 12, 2013 EX-10.31

MASTER ASSIGNMENT AND ASSUMPTION

Exhibit 10.31 EXECUTION MASTER ASSIGNMENT AND ASSUMPTION This Master Assignment and Assumption (the “Master Assignment and Assumption”) is dated as of December 20, 2012 (the “Effective Date”), and is entered into by and between the Assignors (as defined below) and the Assignees (as defined below). Capitalized terms used but not defined herein shall have the meanings given to them in the Existing C

March 12, 2013 EX-99.1

February 20, 2013

Exhibit 99.1 February 20, 2013 Mr. Terry Carter Chief Executive Officer, President Postrock Energy Corporation 210 Park Avenue, Suite 2750 Oklahoma City, OK 73102 Re: Evaluation Summary Postrock Energy Corporation Interests Proved Reserves As of December 31, 2012 Dear Mr. Carter: As requested, we are submitting our estimates of proved reserves and our forecasts of the resulting economics attributa

March 12, 2013 EX-21.1

SUBSIDIARIES OF POSTROCK ENERGY CORPORATION

EX-21.1 EXHIBIT 21.1 SUBSIDIARIES OF POSTROCK ENERGY CORPORATION PostRock MidContinent Production, LLC, a Delaware limited liability company PostRock Energy Services Corporation, a Delaware close corporation PostRock Eastern Production, LLC, a Delaware limited liability company PostRock Holdco, LLC, a Kansas limited liability company STP Newco, Inc., an Oklahoma corporation Constellation Energy Pa

March 12, 2013 EX-10.35

SECOND AMENDED AND RESTATED GUARANTY (PostRock Energy Corporation)

EX-10.35 Exhibit 10.35 EXECUTION SECOND AMENDED AND RESTATED GUARANTY (PostRock Energy Corporation) THIS SECOND AMENDED AND RESTATED GUARANTY (this “Guaranty”), dated as of December 20, 2012, is made by PostRock Energy Corporation, a Delaware corporation (the “Guarantor”), in favor of CITIBANK, N.A., as administrative agent for the Lenders (as defined below). R E C I T A L S: A. Pursuant to that c

March 12, 2013 EX-10.22

POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN STOCK OPTION AWARD AGREEMENT Date of Grant: [ ] Number of Shares Subject to Option: [ ] Option Price: [$ ] Expiration Date: [ ]

EX-10.22 Exhibit 10.22 POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN STOCK OPTION AWARD AGREEMENT Date of Grant: [ ] Number of Shares Subject to Option: [ ] Option Price: [$ ] Expiration Date: [ ] This Option Award Agreement (the “Agreement”) is made by and between PostRock Energy Corporation, a Delaware corporation (the “Company”), and [ ] (“Participant”). RECITALS: A. The Company est

March 12, 2013 EX-10.18

POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN RESTRICTED SHARE AWARD AGREEMENT Date of Grant: [ ] Number of Restricted Shares: [ ]

EX-10.18 Exhibit 10.18 POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN RESTRICTED SHARE AWARD AGREEMENT Date of Grant: [ ] Number of Restricted Shares: [ ] This Restricted Share Award Agreement (the “Agreement”) is made by and between PostRock Energy Corporation, a Delaware corporation (the “Company”), and [ ] (“Participant”). RECITALS: A. The Company established the 2010 Long-Term Incen

March 12, 2013 EX-10.17

POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN RESTRICTED SHARE AWARD AGREEMENT Date of Grant: [ ] Number of Restricted Shares: [ ] Period of Restriction: The period commencing on the Date of Grant and ending on the Vesting Date.

EX-10.17 Exhibit 10.17 POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN RESTRICTED SHARE AWARD AGREEMENT Date of Grant: [ ] Number of Restricted Shares: [ ] Period of Restriction: The period commencing on the Date of Grant and ending on the Vesting Date. This Restricted Share Award Agreement (the “Agreement”) is made by and between PostRock Energy Corporation, a Delaware corporation (the

March 12, 2013 EX-10.37

SECOND AMENDED AND RESTATED PLEDGE AND SECURITY AGREEMENT

Exhibit 10.37 EXECUTION SECOND AMENDED AND RESTATED PLEDGE AND SECURITY AGREEMENT THIS SECOND AMENDED AND RESTATED PLEDGE AND SECURITY AGREEMENT (herein referred to as this “Security Agreement”) is executed as of December 20, 2012, by POSTROCK ENERGY SERVICES CORPORATION, a Delaware corporation (“PESC”), POSTROCK MIDCONTINENT PRODUCTION, LLC, a Delaware limited liability company (“MidContinent”),

March 12, 2013 EX-10.36

AMENDED AND RESTATED GUARANTY

EX-10.36 Exhibit 10.36 AMENDED AND RESTATED GUARANTY (Subsidiary) THIS AMENDED AND RESTATED GUARANTY (this “Guaranty”), dated as of December 20, 2012, is made by STP NEWCO, INC., an Oklahoma corporation (“STP”), POST ROCK EASTERN PRODUCTION, LLC, a Delaware limited liability company (“Eastern”), and POST ROCK HOLDCO, LLC, a Kansas limited liability company (“PR Holdco”; STP, Eastern, and PR Holdco

March 12, 2013 EX-10.20

POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN STOCK OPTION AWARD AGREEMENT Date of Grant: [ ] Number of Shares Subject to Option: [ ] Option Price: [$ ] Expiration Date: [ ]

EX-10.20 Exhibit 10.20 POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN STOCK OPTION AWARD AGREEMENT Date of Grant: [ ] Number of Shares Subject to Option: [ ] Option Price: [$ ] Expiration Date: [ ] This Option Award Agreement (the “Agreement”) dated [ ], 20 , is made by and between PostRock Energy Corporation, a Delaware corporation (the “Company”), and [ ] (“Participant”). RECITALS: A.

March 12, 2013 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2012 Commission file number: 001-34635 PostR

Form 10-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 7, 2013 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): March 6, 2013 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inco

March 7, 2013 EX-99.1

PostRock Reports Year-End Results

EX-99.1 Exhibit 99.1 PostRock Reports Year-End Results OKLAHOMA CITY – March 6, 2013 – PostRock Energy Corporation (NASDAQ: PSTR) today announced its results for the year ended December 31, 2012. The Company identified the following as key factors that impacted 2012 results: • Realized gas prices, excluding hedges, declined nearly 33% year-over-year to $2.68 per Mcf • Drilled 15 new oil wells and

February 12, 2013 SC 13G/A

PSTR / PostRock Energy Corp / MEAD ROBERT E - AMENDMENT Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) POSTROCK ENERGY CORPORATION (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 737525105 (CUSIP Number) December 31, 2012 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whic

January 4, 2013 EX-99.1

PostRock Sets 2013 Capital Budget

Press Release dated January 4, 2013 Exhibit 99.1 PostRock Sets 2013 Capital Budget OKLAHOMA CITY – January 4, 2012 – PostRock Energy Corporation (“PostRock”) (NASDAQ: PSTR) today announced a $29.7 million capital budget for 2013. The budget includes $25.6 million for drilling and recompletions, $600,000 for acreage and $3.6 million for maintenance. Given the Company’s improved financial position,

January 4, 2013 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - AMENDMENT NO. 7 SCHEDULE 13D Activist Investment

Amendment No. 7 Schedule 13D SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7) PostRock Energy Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 737525105 (CUSIP Number) James E. Saxton White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-690

January 4, 2013 8-K

Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): December 31, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdi

December 28, 2012 EX-4.5

POSTROCK ENERGY SERVICES CORPORATION 401(k) PROFIT SHARING PLAN

PostRock Energy Services Corporation 401(k) Profit Sharing Plan Exhibit 4.5 POSTROCK ENERGY SERVICES CORPORATION 401(k) PROFIT SHARING PLAN 401(k) Plan CL2011 Restated January 1, 2013 TABLE OF CONTENTS INTRODUCTION ARTICLE I FORMAT AND DEFINITIONS Section 1.01 — Format 2 Section 1.02 — Definitions 2 ARTICLE II PARTICIPATION Section 2.01 — Active Participant 19 Section 2.02 — Inactive Participant 1

December 28, 2012 S-8

- FORM S-8

Form S-8 As filed with the Securities and Exchange Commission on December 28, 2012 Registration No.

December 27, 2012 8-K

Regulation FD Disclosure, Financial Statements and Exhibits - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): December 27, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdi

December 27, 2012 EX-99.1

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

Security Ownership of Certain Beneficial Owners and Management Exhibit 99.1 SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT The amounts and percentage of shares beneficially owned are reported on the basis of regulations of the SEC governing the determination of beneficial ownership of securities. Under the rules of the SEC, a person is deemed to be a “beneficial owner” of a securit

December 21, 2012 EX-10.2

AMENDMENT NO. 3 TO FIRST AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

Exhibit 10.2 Exhibit 10.2 AMENDMENT NO. 3 TO FIRST AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT This Amendment No. 3, dated December 20, 2012 (this “Amendment”), to the First Amended and Restated Registration Rights Agreement dated as of August 8, 2011 (as amended from time to time, the “Agreement”), by and among PostRock Energy Corporation, a Delaware corporation (together with any successo

December 21, 2012 EX-99.2

PostRock Finalizes New Credit Facility

Exhibit 99.2 Exhibit 99.2 PostRock Finalizes New Credit Facility OKLAHOMA CITY – December 20, 2012 – PostRock Energy Corporation (“PostRock” or the “Company”) (NASDAQ: PSTR) today announced that it had secured a new four-year revolving credit facility (the “Facility”). Citibank acted as Agent, Cadence Bank, Compass Bank and OneWest Bank as Co-Agents and Texas Capital Bank as a participant. The Fac

December 21, 2012 EX-4.1

SECOND AMENDED AND RESTATED CERTIFICATE OF DESIGNATIONS SERIES A CUMULATIVE REDEEMABLE PREFERRED STOCK POSTROCK ENERGY CORPORATION

Exhibit 4.1 Exhibit 4.1 SECOND AMENDED AND RESTATED CERTIFICATE OF DESIGNATIONS OF SERIES A CUMULATIVE REDEEMABLE PREFERRED STOCK OF POSTROCK ENERGY CORPORATION POSTROCK ENERGY CORPORATION, a corporation organized and existing under the General Corporation Law of the State of Delaware (the “Corporation”), in accordance with the provisions of Sections 103 and 151 thereof, DOES HEREBY CERTIFY: The b

December 21, 2012 EX-10.1

Securities Purchase Agreement Dated December 17, 2012 PostRock Energy Corporation, White Deer Energy L.P., White Deer Energy TE L.P. White Deer Energy FI L.P. TABLE OF CONTENTS Page ARTICLE I Purchase; Closing; Closing Transactions 1 1.1 Purchase 1 1

Exhibit 10.1 Exhibit 10.1 Securities Purchase Agreement Dated December 17, 2012 among PostRock Energy Corporation, White Deer Energy L.P., White Deer Energy TE L.P. and White Deer Energy FI L.P. TABLE OF CONTENTS Page ARTICLE I Purchase; Closing; Closing Transactions 1 1.1 Purchase 1 1.2 Closing 2 1.3 Closing Transactions 2 1.4 Issuance of Additional Warrants 2 ARTICLE II Definitions 3 2.1 Defined

December 21, 2012 EX-4.2

WARRANT TO PURCHASE COMMON STOCK

Exhibit 4.2 Exhibit 4.2 WARRANT TO PURCHASE COMMON STOCK THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF EXCEPT WHILE A REGISTRATION STATEMENT RELATING THERETO IS IN EFFECT UNDER SUCH ACT AND APPLICABLE STATE SECURITIES LAWS OR PURSUANT

December 21, 2012 8-K

Regulation FD Disclosure, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Submission of Matters to a Vote of Security Holders - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): December 17, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdi

December 21, 2012 EX-99.1

PostRock Announces Additional White Deer Investment

Exhibit 99.1 Exhibit 99.1 For Immediate Release PostRock Announces Additional White Deer Investment OKLAHOMA CITY – December 18, 2012 – PostRock Energy Corporation (“PostRock” or the “Company”) (NASDAQ: PSTR) today announced that its Board had approved what is expected to be a final $13 million investment by White Deer Energy L.P. (“White Deer”). That brings White Deer’s total investment in PostRo

November 14, 2012 8-K

Other Events - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): November 13, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdi

November 7, 2012 EX-99.1

PostRock Reports Third Quarter Results

Press Release Exhibit 99.1 For Immediate Release PostRock Reports Third Quarter Results OKLAHOMA CITY – November 7, 2012 – PostRock Energy Corporation (NASDAQ: PSTR) today announced its third quarter 2012 results. As previously announced, PostRock completed the sale of its interstate pipeline business on September 28, 2012. Accordingly, the interstate business has now been classified as a disconti

November 7, 2012 10-Q

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 September 30, 2012 Commission file number: 001-34635 PO

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 September 30, 2012 Commission file number: 001-34635 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 27-0981065 (State or other jurisdiction of

November 7, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): November 7, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdic

October 5, 2012 8-K

Unregistered Sales of Equity Securities - ITEM 3.02 8-K

Item 3.02 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): October 1, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other juri

October 4, 2012 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - SCHEDULE 13D AMENDMENT NO. 6 Activist Investment

SCHEDULE 13D AMENDMENT NO. 6 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6) PostRock Energy Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 737525105 (CUSIP Number) James E. Saxton White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-690

October 3, 2012 EX-99.1

POSTROCK ENERGY CORPORATION UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Unaudited Pro Forma Condensed Consolidated Financial Information Exhibit 99.1 POSTROCK ENERGY CORPORATION UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS The following unaudited pro forma condensed consolidated financial statements have been prepared to assist in the analysis of PostRock Energy Corporation’s (“PostRock”) sale of PostRock KPC Pipeline, LLC (“KPC”) to MV Pipelines, L

October 3, 2012 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): September 28, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-34635 27-0981065 (State or other jurisdiction of Incorporat

October 3, 2012 EX-2.1

PURCHASE AGREEMENT POSTROCK ENERGY CORPORATION AS PARENT POSTROCK ENERGY SERVICES CORPORATION AS SELLER POSTROCK KPC PIPELINE, LLC AS THE COMPANY MV PIPELINES, LLC AS BUYER Dated September 28, 2012 TABLE OF CONTENTS 1. DEFINITIONS 1 2. ACQUISITION 1

Purchase Agreement Exhibit 2.1 EXECUTION VERSION PURCHASE AGREEMENT among POSTROCK ENERGY CORPORATION AS PARENT and POSTROCK ENERGY SERVICES CORPORATION AS SELLER and POSTROCK KPC PIPELINE, LLC AS THE COMPANY and MV PIPELINES, LLC AS BUYER Dated September 28, 2012 TABLE OF CONTENTS 1. DEFINITIONS 1 2. ACQUISITION 1 3. PAYMENT AND CLOSING 1 4. REPRESENTATIONS AND WARRANTIES OF THE SELLER 5 5. REPRE

September 5, 2012 EX-99.I

POWER OF ATTORNEY FOR CERTAIN REGULATORY FILINGS INCLUDING CERTAIN FILINGS UNDER THE SECURITIES EXCHANGE ACT OF 1934 AND THE INVESTMENT ADVISERS ACT OF 1940

Power of Attorney Exhibit I POWER OF ATTORNEY FOR CERTAIN REGULATORY FILINGS INCLUDING CERTAIN FILINGS UNDER THE SECURITIES EXCHANGE ACT OF 1934 AND THE INVESTMENT ADVISERS ACT OF 1940 I, Ben A.

September 5, 2012 SC 13D/A

SPP / Sanchez Production Partners LLC / PostRock Energy Corp - AMENDMENT NO. 2 TO SC 13D Activist Investment

Amendment No. 2 to SC 13D SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 2)* CONSTELLATION ENERGY PARTNERS LLC (Name of Issuer) Common Units Representing Class B Limited Liability Company Interests (Title of Class of Securities) 21038E 10 1 (CUSIP Number) David J. Klvac 210 Park Avenue Oklahoma City, OK 73102 (405) 60

August 8, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): August 8, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdicti

August 8, 2012 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - SCHEDULE 13D AMENDMENT NO. 5 Activist Investment

Schedule 13D Amendment No. 5 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 5) PostRock Energy Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 737525105 (CUSIP Number) James E. Saxton White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-690

August 8, 2012 EX-10.2

FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT

First Amendment to Second Amended and Restated Credit Agreement Exhibit 10.2 EXECUTION FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT THIS FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this “First Amendment”) is entered into as of May 31, 2012, among POSTROCK ENERGY SERVICES CORPORATION, a Delaware corporation (“PESC”), POSTROCK MIDCONTINENT PRODUCTION, LLC, a D

August 8, 2012 EX-99.1

PostRock Reports Second Quarter Results

Press Release Exhibit 99.1 PostRock Reports Second Quarter Results OKLAHOMA CITY – August 8, 2012 – PostRock Energy Corporation (NASDAQ: PSTR) today announced its second quarter 2012 results. Oil and gas revenues fell 50% from the prior-year period to $10.7 million. The decline paralleled a 51% drop in the Company’s realized gas price which averaged $2.06 per Mcf in the period. This price does not

August 8, 2012 10-Q

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, 2012 Commission file number: 001-34635 POSTROC

Form 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 8, 2012 EX-10.3

SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT

Second Amendment to Second Amended and Restated Credit Agreement Exhibit 10.3 EXECUTION SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT THIS SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this “Second Amendment”) is entered into as of July 20, 2012, among POSTROCK ENERGY SERVICES CORPORATION, a Delaware corporation (“PESC”), POSTROCK MIDCONTINENT PRODUCTION, LLC

August 7, 2012 EX-4.2

WARRANT TO PURCHASE COMMON STOCK

Form of Warrant Exhibit 4.2 WARRANT TO PURCHASE COMMON STOCK THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF EXCEPT WHILE A REGISTRATION STATEMENT RELATING THERETO IS IN EFFECT UNDER SUCH ACT AND APPLICABLE STATE SECURITIES LAWS OR PURSU

August 7, 2012 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): August 1, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdicti

August 7, 2012 EX-10.1

Securities Purchase Agreement Dated August 1, 2012 PostRock Energy Corporation, White Deer Energy L.P., White Deer Energy TE L.P. White Deer Energy FI L.P. TABLE OF CONTENTS Page ARTICLE I Purchase; Closing; Closing Transactions 1 1.1 Purchase 1 1.2

Securities Purchase Agreement Exhibit 10.1 Securities Purchase Agreement Dated August 1, 2012 among PostRock Energy Corporation, White Deer Energy L.P., White Deer Energy TE L.P. and White Deer Energy FI L.P. TABLE OF CONTENTS Page ARTICLE I Purchase; Closing; Closing Transactions 1 1.1 Purchase 1 1.2 Closing 2 1.3 Closing Transactions 2 1.4 Issuance of Additional Warrants 2 ARTICLE II Definitions

August 7, 2012 EX-4.1

AMENDED AND RESTATED CERTIFICATE OF DESIGNATIONS SERIES A CUMULATIVE REDEEMABLE PREFERRED STOCK POSTROCK ENERGY CORPORATION

Amended and Restated Certificate of Designations for the Series A Exhibit 4.1 AMENDED AND RESTATED CERTIFICATE OF DESIGNATIONS OF SERIES A CUMULATIVE REDEEMABLE PREFERRED STOCK OF POSTROCK ENERGY CORPORATION POSTROCK ENERGY CORPORATION, a corporation organized and existing under the General Corporation Law of the State of Delaware (the “Corporation”), in accordance with the provisions of Sections

August 7, 2012 EX-10.2

AMENDMENT NO. 2 TO FIRST AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

Amendment No. 2 Exhibit 10.2 AMENDMENT NO. 2 TO FIRST AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT This Amendment No. 2, dated August 1, 2012 (this “Amendment”), to the First Amended and Restated Registration Rights Agreement dated as of August 8, 2011 (the “Agreement”), by and among PostRock Energy Corporation, a Delaware corporation (together with any successor entity thereto, the “Corpora

July 5, 2012 EX-99.6

POWER OF ATTORNEY FOR CERTAIN REGULATORY FILINGS INCLUDING CERTAIN FILINGS UNDER THE SECURITIES EXCHANGE ACT OF 1934 AND THE INVESTMENT ADVISERS ACT OF 1940

Exhibit F Exhibit F POWER OF ATTORNEY FOR CERTAIN REGULATORY FILINGS INCLUDING CERTAIN FILINGS UNDER THE SECURITIES EXCHANGE ACT OF 1934 AND THE INVESTMENT ADVISERS ACT OF 1940 I, Ben A.

July 5, 2012 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - SCHEDULE 13D/A Activist Investment

Schedule 13D/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4) PostRock Energy Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 737525105 (CUSIP Number) James E. Saxton White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-6900 (Name, Addre

June 1, 2012 8-K

Entry into a Material Definitive Agreement, Other Events - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): May 31, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction

May 22, 2012 SC 13G/A

PSTR / PostRock Energy Corp / LIBRA ADVISORS LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

May 17, 2012 S-8

- FORM S-8

Form S-8 As filed with the Securities and Exchange Commission on May 17, 2012 Registration No.

May 17, 2012 EX-4.7

SECOND AMENDMENT POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN

Second Amendment to PostRock Energy Corporation 2010 Long-Term Incentive Plan Exhibit 4.

May 17, 2012 EX-4.2

CERTIFICATE OF AMENDMENT RESTATED CERTIFICATE OF INCORPORATION

Certificate of Amendment to Restated Certificate of Incorporation of PostRock Exhibit 4.

May 15, 2012 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events, Submission of Matters to a Vote of Security Holders - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest reported event): May 9, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 Delaware 27-0981065 (State or other jurisdiction

May 11, 2012 EX-10.5

POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN DIRECTOR RESTRICTED SHARE UNIT AWARD AGREEMENT (With Immediate Vesting) Date of Grant: [ ], 2012 Number of Restricted Share Units: [ ]

PostRock Form of Director Restricted Share Unit Award Agreement Exhibit 10.5 POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN DIRECTOR RESTRICTED SHARE UNIT AWARD AGREEMENT (With Immediate Vesting) Date of Grant: [ ], 2012 Number of Restricted Share Units: [ ] This Director Restricted Share Unit Award Agreement (the “Agreement”) dated [ ], 2012, is made by and between PostRock Energy Corp

May 11, 2012 EX-10.6

POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN DIRECTOR RESTRICTED SHARE UNIT AWARD AGREEMENT Date of Grant: May 10, 2012 Number of Restricted Share Units: [ ]

PostRock Form of Director Restricted Share Unit Award Agreement Exhibit 10.6 POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN DIRECTOR RESTRICTED SHARE UNIT AWARD AGREEMENT Date of Grant: May 10, 2012 Number of Restricted Share Units: [ ] This Director Restricted Share Unit Award Agreement (the “Agreement”) dated [ ], 2012, is made by and between PostRock Energy Corporation, a Delaware co

May 11, 2012 EX-10.4

CHANGE IN CONTROL SEVERANCE PLAN FOR EXECUTIVE OFFICERS OTHER THAN CEO AND PRESIDENT

Change in Control Severance Plan for Other Executive Officers Exhibit 10.4 CHANGE IN CONTROL SEVERANCE PLAN FOR EXECUTIVE OFFICERS OTHER THAN CEO AND PRESIDENT Pursuant to a resolution of its Board of Directors, this Change in Control Severance Plan for Executive Officers Other than CEO and President (the “Plan”) is adopted by PostRock Energy Corporation (the “Company”) and its subsidiaries effect

May 11, 2012 10-Q

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 March 31, 2012 Commission file number: 001-34635 POSTRO

Form 10-Q Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 11, 2012 EX-10.3

CHANGE IN CONTROL SEVERANCE PLAN FOR CHIEF EXECUTIVE OFFICER

Change in Control Severance Plan for Chief Executive Officer Exhibit 10.3 CHANGE IN CONTROL SEVERANCE PLAN FOR CHIEF EXECUTIVE OFFICER Pursuant to a resolution of its Board of Directors (the “Board”), this Change in Control Severance Plan for Chief Executive Officer (the “Plan”) is adopted by PostRock Energy Corporation (the “Company”) and its subsidiaries effective as of the 20th day of February,

May 10, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): May 10, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Incor

May 10, 2012 EX-99.1

PostRock Reports First Quarter Results

Press Release Exhibit 99.1 For Immediate Release PostRock Reports First Quarter Results OKLAHOMA CITY – May 10, 2012 – PostRock Energy Corporation (NASDAQ: PSTR) today announced results for the first quarter of 2012. Oil and gas revenues totaled $13.6 million, a 32.7% decrease from the prior-year quarter. Lower revenue was primarily the result of lower natural gas prices which decreased to $3.08 p

April 4, 2012 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3) PostRock Energy Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 737525105 (CUSIP Number) James E. Saxton White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-6900 (Name, Address and

March 30, 2012 DEFA14A

- DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

March 30, 2012 DEF 14A

- DEFINITIVE PROXY STATEMENT

Definitive Proxy Statement UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 20, 2012 PRE 14A

- PRELIMINARY PROXY STATEMENT

Preliminary Proxy Statement UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 8, 2012 EX-10.33

FIRST AMENDMENT POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN

Amendment No. 1 to PostRock 2010 Long-Term Incentive Plan Exhibit 10.33 FIRST AMENDMENT TO POSTROCK ENERGY CORPORATION 2010 LONG-TERM INCENTIVE PLAN WHEREAS, PostRock Energy Corporation, a Delaware corporation (the “Company”), has established and maintains the PostRock Energy Corporation 2010 Long-Term Incentive Plan (the “Plan”); and WHEREAS, pursuant to Article 15 of the Plan, the Company has th

March 8, 2012 EX-21.1

SUBSIDIARIES OF POSTROCK ENERGY CORPORATION

List of Subsidiaries EXHIBIT 21.1 SUBSIDIARIES OF POSTROCK ENERGY CORPORATION PostRock MidContinent Production, LLC, a Delaware limited liability company PostRock Energy Services Corporation, a Delaware close corporation PostRock KPC Pipeline, LLC, a Delaware limited liability company PostRock Eastern Production, LLC, a Delaware limited liability company STP Newco, Inc., an Oklahoma corporation Co

March 8, 2012 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): March 7, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of Inco

March 8, 2012 EX-99.1

PostRock Reports Year-End Results

Press Release Exhibit 99.1 For Immediate Release PostRock Reports Year-End Results OKLAHOMA CITY – March 7, 2012 — PostRock Energy Corporation (NASDAQ:PSTR) (“PostRock” or the “Company”) today announced its results for the year ended December 31, 2011. The Company identified the following as key events that took place during 2011. • 116 wells were completed and 49 recompletions executed in the Che

March 8, 2012 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2011 Commission file number: 001-34635 PostR

FORM 10-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 8, 2012 EX-99.1

February 23, 2012

Report of Cawley, Gillespie & Associates, Inc. Exhibit 99.1 February 23, 2012 Mr. Terry Carter Chief Executive Officer, President Postrock Energy Corporation 210 Park Avenue, Suite 2750 Oklahoma City, OK 73102 Re: Evaluation Summary Postrock Energy Corporation Interests Proved Reserves As of December 31, 2011 Dear Mr. Carter: As requested, we are submitting our estimates of proved reserves and our

February 23, 2012 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): February 20, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdiction of

February 15, 2012 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): February 9, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdic

February 15, 2012 EX-10.1

ARTICLE I Purchase; Closing; Closing Transactions

EX-10.1 Exhibit 10.1 STOCK PURCHASE AGREEMENT, dated February 9, 2012 (this “Agreement”), by and among PostRock Energy Corporation, a Delaware corporation (the “Company”), White Deer Energy L.P., a Cayman Islands exempted limited partnership (“White Deer”), White Deer Energy TE L.P., a Cayman Islands exempted limited partnership (“White Deer TE”) and White Deer Energy FI L.P. a Cayman Islands exem

February 15, 2012 EX-10.2

AMENDMENT NO. 1 TO FIRST AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

EX-10.2 Exhibit 10.2 EXECUTION VERSION AMENDMENT NO. 1 TO FIRST AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT This Amendment No. 1, dated February 9, 2012 (this “Amendment”), to the First Amended and Restated Registration Rights Agreement dated as of August 8, 2011 (the “Agreement”), by and among PostRock Energy Corporation, a Delaware corporation (together with any successor entity thereto,

February 15, 2012 EX-99.1

White Deer Invests $7.5 Million in PostRock

EX-99.1 Exhibit 99.1 White Deer Invests $7.5 Million in PostRock OKLAHOMA CITY – February 9, 2012 – PostRock Energy Corporation (Nasdaq:PSTR) (“PostRock” or the “Company”) today announced that White Deer Energy L.P. (“White Deer”) completed a $7.5 million investment in the Company. In the transaction, White Deer acquired 2,180,233 common shares at a price of $3.44 per share. The proceeds from the

February 14, 2012 SC 13G/A

PSTR / PostRock Energy Corp / LIBRA ADVISORS LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

February 10, 2012 EX-99.E

AMENDMENT NO. 1 TO FIRST AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

Amendment No. 1 to Registration Rights Agreement Exhibit E EXECUTION VERSION AMENDMENT NO. 1 TO FIRST AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT This Amendment No. 1, dated February 9, 2012 (this “Amendment”), to the First Amended and Restated Registration Rights Agreement dated as of August 8, 2011 (the “Agreement”), by and among PostRock Energy Corporation, a Delaware corporation (togeth

February 10, 2012 EX-99.D

Stock Purchase Agreement Dated February 9, 2012 PostRock Energy Corporation, White Deer Energy L.P., White Deer Energy TE L.P. White Deer Energy FI L.P. TABLE OF CONTENTS Page ARTICLE I Purchase; Closing; Closing Transactions 1 1.1 Purchase 1 1.2 Clo

Stock Purchase Agreement Exhibit D Execution Version Stock Purchase Agreement Dated February 9, 2012 among PostRock Energy Corporation, White Deer Energy L.

February 10, 2012 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - SCHEDULE 13D AMENDMENT NO. 2 Activist Investment

Schedule 13D Amendment No. 2 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 2) PostRock Energy Corporation (Name of issuer) Common Stock, par value $0.01 per share (Title of class of securities) 737525105 (CUSIP number) James E. Saxton White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-690

February 8, 2012 EX-99.1

Court Approves PostRock Royalty Settlement

Press Release dated February 6, 2012 Exhibit 99.1 Court Approves PostRock Royalty Settlement OKLAHOMA CITY – February 6, 2012 – PostRock Energy Corporation (Nasdaq:PSTR) (“PostRock” or the “Company”) today announced that on December 30, 2011, the United States District Court for the District of Kansas entered judgment approving a settlement of all claims against the Company by its Kansas royalty o

February 8, 2012 8-K

Financial Statements and Exhibits, Other Events

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): February 6, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdic

February 3, 2012 SC 13D/A

PSTR / PostRock Energy Corp / White Deer Energy L.P. - SCHEDULE 13D AMENDMENT NO.1 Activist Investment

Schedule 13D Amendment No.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1) PostRock Energy Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 737525105 (CUSIP Number) James E. Saxton White Deer Energy L.P. 700 Louisiana, Suite 4770 Houston, Texas 77002 (713) 581-6900

January 24, 2012 EX-99.1

PostRock Considering Alternatives For KPC Pipeline

Press Release Exhibit 99.1 PostRock Considering Alternatives For KPC Pipeline OKLAHOMA CITY – January 19, 2012 – PostRock Energy Corporation (NASDAQ: PSTR) (“PostRock”) today announced that it was investigating strategic alternatives for the KPC Pipeline, its wholly-owned interstate natural gas pipeline. Transactions being considered include a sale or joint venture and may involve conversion of pa

January 24, 2012 8-K

Financial Statements and Exhibits, Other Events - FORM 8-K

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): January 19, 2012 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdic

January 5, 2012 SC 13G

PSTR / PostRock Energy Corp / MEAD ROBERT E - SCHEDULE 13G Passive Investment

Schedule 13G SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No ) POSTROCK ENERGY CORPORATION (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 737525105 (CUSIP Number) December 30, 2011 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursu

December 23, 2011 EX-2.1

PURCHASE AGREEMENT BY AND AMONG CONSTELLATION ENERGY COMMODITIES GROUP, INC. CONSTELLATION ENERGY PARTNERS HOLDINGS, LLC AS SELLING PARTIES CONSTELLATION ENERGY PARTNERS MANAGEMENT, LLC POSTROCK ENERGY CORPORATION AS BUYER PARTIES TABLE OF CONTENTS P

Purchase Agreement Exhibit 2.1 Execution Version PURCHASE AGREEMENT BY AND AMONG CONSTELLATION ENERGY COMMODITIES GROUP, INC. AND CONSTELLATION ENERGY PARTNERS HOLDINGS, LLC AS SELLING PARTIES AND CONSTELLATION ENERGY PARTNERS MANAGEMENT, LLC AND POSTROCK ENERGY CORPORATION AS BUYER PARTIES TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 1 Section 1.01 Definitions 1 Section 1.02 Rules of Interpretati

December 23, 2011 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): December 19, 2011 POSTROCK ENERGY

Form 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (date of earliest reported event): December 19, 2011 POSTROCK ENERGY CORPORATION (Exact name of registrant as specified in its charter) Commission File No. 001-34635 DELAWARE 27-0981065 (State or other jurisdi

December 20, 2011 EX-99.H

PURCHASE AGREEMENT BY AND AMONG CONSTELLATION ENERGY COMMODITIES GROUP, INC. CONSTELLATION ENERGY PARTNERS HOLDINGS, LLC AS SELLING PARTIES CONSTELLATION ENERGY PARTNERS MANAGEMENT, LLC POSTROCK ENERGY CORPORATION AS BUYER PARTIES TABLE OF CONTENTS P

Exhibit H Execution Version PURCHASE AGREEMENT BY AND AMONG CONSTELLATION ENERGY COMMODITIES GROUP, INC.

December 20, 2011 SC 13D/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* CONSTELLATION ENERGY PARTNERS LLC (Name of issuer) Common Units Representing Class B Limited Liability Company Interes

SC 13D/A AMENDMENT NO. 1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* CONSTELLATION ENERGY PARTNERS LLC (Name of issuer) Common Units Representing Class B Limited Liability Company Interests (Title of class of securities) 21038E 10 1 (CUSIP number) David J. Klvac 210 Park Avenue Oklahoma City, OK 73102 (405) 600

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