Barnston Inc. Sample Contracts

JOINT FILING AGREEMENT
Joint Filing Agreement • June 1st, 2011 • Barnston Inc. • Electric services

The undersigned hereby agree that the Statement on Schedule 13G, dated May 31, 2011, with respect to the shares of Common Stock of Pampa Energía S.A., is, and any amendments thereto executed by each of us shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, and that this Agreement shall be included as an Exhibit to the Schedule 13G and each such amendment. Each of the undersigned agrees to be responsible for the timely filing of the Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning itself contained therein. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

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JOINT FILING AGREEMENT
Joint Filing Agreement • January 3rd, 2012 • Barnston Inc. • Electric services

The undersigned hereby agree that the Statement on Schedule 13G, dated December 30, 2011, with respect to the shares of Common Stock of Pampa Energía S.A., is, and any amendments thereto executed by each of us shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, and that this Agreement shall be included as an Exhibit to the Schedule 13G and each such amendment. Each of the undersigned agrees to be responsible for the timely filing of the Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning itself contained therein. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

JOINT FILING AGREEMENT
Joint Filing Agreement • February 12th, 2013 • Barnston Inc. • Electric services

The undersigned hereby agree that the Statement on Schedule 13G, dated February 11, 2013 with respect to the shares of Common Stock of Pampa Energía S.A., is, and any amendments thereto executed by each of us shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, and that this Agreement shall be included as an Exhibit to the Schedule 13G and each such amendment. Each of the undersigned agrees to be responsible for the timely filing of the Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning itself contained therein. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.