X0306 4 2015-02-19 0 0001092914 ATLAS PIPELINE PARTNERS LP APL 0001201754 DUBAY EUGENE N 1845 WALNUT STREET, 10TH FLOOR PHILADELPHIA PA 19103 0 1 0 0 CEO Common Units 2015-02-19 4 F 0 7909 28.54 D 94243 I By Trust Common Units 142000 D Common Units 37175 I By Spouse Trust In connection with the February 18, 2015 vesting of 16,500 phantom units granted under the Atlas Pipeline Partners, L.P. 2010 Long-Term Incentive Plan, the reporting person elected to have 7,909 common units withheld to satisfy the reporting person's tax obligation. 141,000 of these units remain subject to vesting schedules. The reporting person disclaims beneficial ownership of the units held by his spouse's trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of his spouse's trust's units for purposes of Section 16 or for any other purpose. Gerald R. Shrader, Attorney-in-Fact 2015-02-20