X0305 4 2012-03-31 0 0001075607 TC PIPELINES LP TCP 0001198719 MALQUIST MALYN K 717 TEXAS STREET, SUITE #2400 HOUSTON TX 77002 1 0 0 0 Deferred Share Units 2012-03-31 4 A 0 89 44.96 A Common units representing limited partner interest 89 1758 D Upon termination of service as a director, Deferred Share Units ("DSUs") recorded in the reporting person's account will be settled, at the reporting person's election, in common units representing a limited partner interest in TC PipeLines, LP ("Common Units") at no additional cost on a 1 for 1 basis or in cash of equivalent value, less applicable withholdings. The DSUs are immediately fully vested and are redeemable only following Mr. Malquist's termination of Board service. Mr. Malquist elected to have a portion of his annual retainer and attendance fees paid on a quarterly basis in the form of DSUs in lieu of cash. The number of DSUs is calculated based on the Fair Market Value of the Common Units on the last trading day of the quarterly payment period. /s/ Avery C. Smith, Attorney for Malyn K. Malquist 2012-04-03