Atlas America Public 12 2003 Program Sample Contracts

ATLAS AMERICA PUBLIC #12-2003 Limited Partnership – ASSIGNMENT AND BILL OF SALE (October 31st, 2016)

THIS ASSIGNMENT AND BILL OF SALE (this “Assignment”), dated October 25, 2016, is from each of the limited partnerships set forth on Exhibit A (each an “Assignor” and collectively, the “Assignors”) to Atlas Resources, LLC, a Pennsylvania limited liability company (“Assignee”), and is effective as of 12:01 a.m. Eastern Prevailing Time on October 1, 2016 (“Effective Time”).

ATLAS AMERICA PUBLIC #12-2003 Limited Partnership – AMENDMENT NO. 1 TO AGREEMENT OF LIMITED PARTNERSHIP OF ATLAS AMERICA PUBLIC #12-2003 Limited Partnership (July 28th, 2016)

THIS AMENDMENT NO. 1 to AGREEMENT OF LIMITED PARTNERSHIP OF ATLAS AMERICA PUBLIC #12-2003 LIMITED PARTNERSHIP (this “Amendment”), dated as of July 26, 2016, is entered into and effectuated by Atlas Resources, LLC (f/k/a Atlas Resources, Inc.), a Pennsylvania limited liability company and the general partner of Atlas America Public #12-2003 Limited Partnership, a Delaware limited partnership (the “Partnership”), pursuant to authority granted to it in Section 8.05(b)(iii) of the Agreement of Limited Partnership of the Partnership, dated as of October 18, 2003 (as amended from time to time, the “Limited Partnership Agreement”). Capitalized terms used but not defined herein are used as defined in the Limited Partnership Agreement.

Atlas America Public 12 2003 Program – DRILLING AND OPERATING AGREEMENT FOR ATLAS AMERICA PUBLIC #12-2003 LIMITED PARTNERSHIP BRADFORD FORMATION FAYETTE, ARMSTRONG, MCKEAN, INDIANA, GREEN COUNTIES, PA DATED OCTOBER 18, 2003 (April 23rd, 2004)

INDEX Section Page ------- ---- 1. Assignment of Well Locations; Representations; Designation of Additional Well Locations; Outside Activities Are Not Restricted.......................................................................1 2. Drilling of Wells; Timing; Depth; Interest of Developer; Right to Substitute Well Locations.................2 3. Operator - Responsibilities in General; Covenants; Term.....................................................3 4. Operator's Charges for Drilling and Completing Wells; Payment; Completion Determination; Dry Hole Determination; Excess Funds and Cost Overruns - Intangible Drilling Costs; Excess Funds a

Atlas America Public 12 2003 Program – Number and Name Address Class of Shares Ira S. Pimm, Jr. 2225 Land Title Building 1 Philadelphia, PA 19110 IN TESTIMONY WHEREOF, the incorporator(s) has (have) signed and sealed these Articles of Incorporation this 5th day July, 1979. Ira S.Pimm, Jr. _______________________________(SEAL) _______________________________(SEAL) _______________________________(SEAL) COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF STATE CORPORATION BUREAU Articles of Incorporation Domestic Business Corporation In compliance with the requirements of section 204 of the Business Corporation Law, act of May 5, 1933 (P.L. 36 (June 3rd, 2003)