Northern Tier Energy Announces Management Changes and Reaffirms Fourth-Quarter Operational Guidance

Northern Tier Energy Announces Management Changes and Reaffirms Fourth-Quarter
                             Operational Guidance

PR Newswire

RIDGEFIELD, Conn., Dec. 21, 2012

RIDGEFIELD, Conn., Dec. 21, 2012 /PRNewswire/ -- Northern Tier Energy LP
(NYSE: NTI) ("Northern Tier Energy" or the "Partnership") announced that its
co-founder and Chief Executive Officer Mario Rodriguez has resigned effective
today and that its co-founder, President and Chief Operating Officer Hank
Kuchta, has assumed the role of Chief Executive Officer of the Partnership.

"We thank Mario for his many contributions to the growth and success of
Northern Tier Energy and wish him continued success with his future
endeavors," said Dan Smith, Chairman of the Board of Directors of Northern
Tier Energy, GP LLC, the general partner of the Partnership, who will be
elevated to Executive Chairman. "We are fortunate to have Hank lead Northern
Tier Energy and expect, with his background not only with Northern Tier Energy
but in the energy and refining business, to have a smooth transition."

Mr. Rodriguez said, "With the announcement of two consecutive quarters of
record operating and financial results, the successful completion of the
initial public offering of Northern Tier Energy, and the completion of our
recent debt refinancing, I felt the time was right for me to step down and to
explore new opportunities. I am happy to leave Northern Tier Energy in the
very capable hands of Hank Kuchta, who has been with the company since its
inception in December 2010."

Mr. Kuchta said, "Mario and I co-founded this business and I have been
President and Chief Operating Officer of this company since the beginning. The
company has had many achievements under our leadership and is in a strong
financial position. I look forward to the opportunity to lead this company to
a bright future and I am fortunate to take the reins of Northern Tier Energy
following our record third quarter results and initial cash distribution."

Prior to his role at Northern Tier Energy, Mr. Kuchta was President and Chief
Operating Officer of Premcor which operated four refineries in the United
States with total refining capacity of approximately 750,000 barrels per day.
Mr. Kuchta served in this role during the IPO of Premcor and at the time of
its sale to Valero in April 2005. Before joining Premcor, Hank served as a
business development manager for Phillips 66 Company following Phillips' 2001
acquisition of Tosco Corporation.

Dan Smith has served as Chairman of the Board of Directors of Northern Tier
Energy LLC since November 29, 2011 and as a Director since May 2011. Mr. Smith
is the former Chairman, President and Chief Executive Officer of Lyondell
Chemical Company. He was elected President of Lyondell Chemical Company in
August 1994, Chief Executive Officer in December 1996, and Chairman of the
Board of Directors in May 2007. At the time of its acquisition in December
2007 by Basell, Lyondell was the third largest independent chemical
manufacturer in the U.S. and owned and operated a 270,000 bpd full conversion
refinery in Houston, TX, as well as approximately 40 chemical sites on five
continents. He began his career with ARCO (Atlantic Richfield Company) in 1968
as an engineer.

Northern Tier Energy Reaffirms Fourth-Quarter 2012 Operational Guidance

Northern Tier Energy today reaffirmed its previously issued fourth quarter
2012 operational guidance, which guidance is set forth in the table below.

                                                                      Q4
                                                                     2012
                                                                      Low         High
Refinery Statistics:
Total Throughput (bpd) ..........................................    80,000       85,000
Direct opex ex. turnaround ($/throughput bbl) ......                        $  
                                                                            4.75
Turnaround reserve ($ in mm) ...............................                $  
                                                                            10.0
Retail Statistics:
Forecasted gallons (mm) .......................................             79
Retail fuel margin ($/gallon) ...................................           $  
                                                                            0.19
Merchandise sales ($ in mm) ................................                $  
                                                                            90.0
Merchandise gross margin (%) ............................                   25.5%
Direct operating expense ($ in mm) ......................                   $  
                                                                            29.0
Other Guidance ($ in mm):
SG&A                                                                        $  
....................................................................        23.0
Depreciation & amortization ..................................              9.0
Cash interest expense ..........................................            6.7
Capital expenditure ...............................................         11.0
Taxes                                                                       1.1
....................................................................

About Northern Tier Energy

Northern Tier Energy LP (NYSE:NTI) is an independent downstream energy company
with refining, retail and pipeline operations that serves the PADD II region
of the United States. Northern Tier Energy operates an 84,500 barrels per
stream day refinery located in St. Paul Park, Minnesota. Northern Tier Energy
also operates 166 convenience stores and supports 68 franchised convenience
stores, primarily in Minnesota and Wisconsin, under the SuperAmerica
trademark, and owns a bakery and commissary under the SuperMom's brand.
Northern Tier Energy is headquartered in Ridgefield, Connecticut.

Forward Looking Statements

This press release contains certain "forward-looking statements" which reflect
Northern Tier Energy's views and assumptions on the date of this press release
regarding future events. They involve known and unknown risks, uncertainties
and other factors, many of which may be beyond its control, that may cause
actual results to differ materially from any future results, performance or
achievements expressed or implied by the forward-looking statements. All
forward-looking statements speak only as of the date hereof. Northern Tier
Energy undertakes no obligation to update or revise publicly any such
forward-looking statements. Northern Tier Energy cautions you not to place
undue reliance on these forward-looking statements. Please refer to Northern
Tier Energy's filings with the SEC for more detailed information regarding
these risks, uncertainties and assumptions.

SOURCE Northern Tier Energy LP

Contact: Maria Testani, +1-203-244-6550, maria.testani@ntenergy.com