Antero Resources Llc (1476655) SEC Filing 10-Q Quarterly report for the period ending Sunday, March 31, 2013

Exhibit 99.1

Antero Resources Reports First Quarter 2013 Results

Highlights:

·                  Net daily production averaged 383 MMcfe/d, up 114% over first quarter 2012 production from continuing operations

·                  Net daily production was up 21% sequentially from net daily production from continuing operations in the fourth quarter of 2012

·                  Net daily liquids production was 2,392 Bbl/d, up 166% sequentially from net daily liquids production from continuing operations in the fourth quarter of 2012

·                  Reported GAAP loss was $48 million and adjusted net income was $42 million

·                  EBITDAX was $119 million, up 76% over EBITDAX from continuing operations for the prior year quarter

·                  Current estimated net production is 480 MMcfe/d including 4,400 Bbl/d of NGLs and condensate

·                  16 Antero operated drilling rigs currently running in Marcellus and Utica

·                  Natural gas hedge position increased by 4% to 977 Bcfe hedged through 2018 at $4.87/MMBtu NYMEX-equivalent

·                  Credit facility borrowing base increased by 43% to $1.75 billion in May 2013 redetermination

Denver, Colorado, May 13, 2013—Antero Resources

Recent Developments

Effective May 9, 2013 Antero’s borrowing base under its bank credit facility was increased by $530 million to a new total of $1.75 billion.  In addition, lender commitments under the facility were increased by $500 million to $1.2 billion.  The $1.2 billion commitment can be expanded to the full $1.75 billion borrowing base upon bank approval.  Antero’s bank group is co-led by JPMorgan Chase Bank, N.A. and Wells Fargo Bank, N.A.

As of March 31, 2013, Antero had $404 million drawn under the credit facility and $32 million in letters of credit outstanding, resulting in $764 million of readily available liquidity and over $1.3 billion of unused borrowing base capacity.  The next borrowing base redetermination is expected to occur in October 2013.  Antero has $25 million of debt maturing prior to the May 2016 maturity of the credit facility.

Financial Results

Net production for the first quarter of 2013 increased to 34 Bcfe, a 114% increase over net production from continuing operations in the first quarter of 2012.  First quarter 2013 net production increased 21% sequentially from net production from continuing operations of 29 Bcfe in the fourth quarter 2012.  The sequential net production increase was primarily driven by production from 24 new wells brought on line in the first quarter of 2013 in the Marcellus Shale.  Net production of 34 Bcfe for the first quarter of 2013 was comprised of 33 Bcf of natural gas, 205,000 barrels of NGLs and 10,000 barrels of oil.  Net daily production averaged 383 MMcfe/d for the first quarter of 2013, and was comprised of 369 MMcf/d of natural gas (96%), 2,279 Bbl/d of NGLs (3%) and 113 Bbl/d of crude oil (1%).  First quarter 2013 net daily liquids production of 2,392 Bbl/d increased 166% sequentially from net daily liquids production from continuing operations in the fourth quarter of 2012.

Revenues for the first quarter of 2013 were $61 million, a decrease of 89% compared to the first quarter of 2012.  Revenues for the first quarter of 2012 included a $291 million gain on sale of a portion of our Marcellus gathering assets as well as a $170 million unrealized gain on commodity derivative instruments  while the first quarter of 2013 included a $120 million unrealized loss on commodity derivatives.  Liquids production (NGLs and oil) contributed 9% of oil, natural gas liquids and gas sales before commodity

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