PostRock Provides Production and Operations Update

PostRock Provides Production and Operations Update

OKLAHOMA CITY, June 6, 2013 (GLOBE NEWSWIRE) -- PostRock Energy Corporation
(Nasdaq:PSTR) today provided an update on its production and key operational
improvements. Net oil production for April and May averaged approximately 590
Bbls per day, an increase of 38% from the first quarter and of over 90% from
the second quarter of 2012. Monthly net oil sales currently lag production by
approximately 11% due to on-lease inventory buildup as production facilities
are constructed in the Cherokee Basin.Net gas production during the period
averaged slightly less than 40 MMcf per day, a 3% decrease from the first
quarter of 2013, as all development capital has been directed to oil projects
since September 2011.However, based on a year-to-date 26:1 realized price
equivalency ratio of oil to natural gas, production has increased about 5%
thus far in the second quarter as compared to the first quarter.This trend is
expected to continue throughout the year as development of the Company's oil
opportunities proceeds.

Additionally, the Company's Cherokee Basin compression reconfiguration project
is 20% complete, with full implementation expected by March 31, 2014.Total
project cost is estimated at $7 million.When completed, site efficiencies are
projected to reduce fuel use by 2.5 MMcf per day, equating to $3 million in
additional annual net revenue at current gas prices, and reduce annual rental
costs by $3.2 million.

Commenting, Terry W. Carter, the Company's President and CEO, said, "Our
ongoing oil development and cost improvement projects continue to add value
for our shareholders. The reduction ofcompression costs and fuel use not
only increases cash flow to accelerate development of our multiyear oil
project inventory, but also gets us nearer to achieving IRRs of 30% on natural
gas development in the Cherokee Basin at gas prices near $4.50 per Mcf."

PostRock Energy Corporation is engaged in the acquisition, development and
production of oil and natural gas, primarily in the Cherokee Basin of Kansas
and Oklahoma. The Company owns and operates over 3,000 wells and nearly 2,200
miles of gas gathering lines in the Basin. It also owns and operates oil
producing properties in central Oklahoma and oil and gas producing properties
in Appalachia.

Opinions, forecasts, projections and statements that are not historical facts
are forward-looking statements that involve risks and uncertainties. Such
statements in this announcement are made pursuant to the safe harbor
provisions of the Private Securities Litigation Reform Act of 1995. While the
Company believes expectations reflected in these statements are reasonable,
there is no assurance they will prove correct. Actual results may differ
materially due to unforeseen factors. These risks and others are detailed in
the Company's filings with the Securities and Exchange Commission which may be
found at www.pstr.com or www.sec.gov. In making forward-looking statements,
the Company undertakes no obligation to update them.

CONTACT: David J. Klvac
         EVP & Chief Financial Officer
         dklvac@pstr.com
         (405) 815-4304

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