X0202 3 2007-04-30 0 0001364541 EAGLE ROCK ENERGY PARTNERS L P EROC 0001398357 SCHIMELPFENING JOSEPH E 16701 GREENSPOINT PARK DRIVE SUITE 200 HOUSTON TX 77060 0 1 0 0 Senior Vice President Common Units representing limited partner interests 4794 I See Notes (1) and (2) On April 30, 2007, Montierra Minerals & Production, L.P. ("Montierra") completed a transaction with the Issuer in which it received 2,820,578 common units. The reporting person owns 0.17% of Montierra and, thus, indirectly owns 4,794 common units through his ownership in Montierra. The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interests therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the reported securities for purposed of Section 16 or for any other purpose. Joseph E. Schimelpfening 2007-05-10